Details for: XPNPEP1

Gene ID: 7511

Gene Type:  Protein-coding  - A gene that serves as a template for producing a messenger RNA (mRNA) molecule, which is then translated into a functional protein.

Symbol: XPNPEP1

Ensembl ID: ENSG00000108039

Description: X-prolyl aminopeptidase 1

Cell Significance Landscape

Associated with

Significant Cells

Cell Significance Index (CSI) scores for the chosen context(s)

  • plasmablast CL0000980
    CSI 10.58
    rCSI 8.32%
    PRS 61.93
  • club cell CL0000158
    CSI 9.12
    rCSI 13.35%
    PRS 52.35
  • megakaryocyte CL0000556
    CSI 7.13
    rCSI 30.92%
    PRS 69.3
  • megakaryocyte-erythroid progenitor cell CL0000050
    CSI 5.36
    rCSI 4.84%
    PRS 51.97
  • M cell of gut CL0000682
    CSI 4.66
    rCSI 4.96%
    PRS 67.16
  • cardiac endothelial cell CL0010008
    CSI 4.66
    rCSI 18.8%
    PRS 53.74
  • granulocyte monocyte progenitor cell CL0000557
    CSI 3.6
    rCSI 3.12%
    PRS 59.84
  • CD4-positive, CD25-positive, alpha-beta regulatory T cell CL0000792
    CSI 3.59
    rCSI 3.52%
    PRS 71.03
  • large pre-B-II cell CL0000957
    CSI 3.5
    rCSI 9.99%
    PRS 68.36
  • effector CD8-positive, alpha-beta T cell CL0001050
    CSI 3.47
    rCSI 2.64%
    PRS 67.81
  • double negative thymocyte CL0002489
    CSI 3.36
    rCSI 2.34%
    PRS 65.6
  • renal alpha-intercalated cell CL0005011
    CSI 3.35
    rCSI 4.49%
    PRS 64.25
  • ciliated cell CL0000064
    CSI 3.25
    rCSI 5.27%
    PRS 52.46
  • mesenchymal cell CL0008019
    CSI 3.17
    rCSI 8.04%
    PRS 49.92
  • interneuron CL0000099
    CSI 3.13
    rCSI 6.29%
    PRS 44.35
  • enteric smooth muscle cell CL0002504
    CSI 3.07
    rCSI 4.37%
    PRS 57.68
  • interstitial cell of Cajal CL0002088
    CSI 3.05
    rCSI 3.89%
    PRS 61.51
  • small intestine goblet cell CL1000495
    CSI 2.99
    rCSI 6.54%
    PRS 63.79
  • kidney connecting tubule epithelial cell CL1000768
    CSI 2.93
    rCSI 7.44%
    PRS 44.88
  • lung interstitial macrophage CL4033043
    CSI 2.83
    rCSI 6.35%
    PRS 73.49
  • pro-B cell CL0000826
    CSI 2.78
    rCSI 2.3%
    PRS 56.86
  • duct epithelial cell CL0000068
    CSI 2.71
    rCSI 3.96%
    PRS 59.07
  • secretory cell CL0000151
    CSI 2.68
    rCSI 2.79%
    PRS 55.61
  • melanocyte CL0000148
    CSI 2.67
    rCSI 1.98%
    PRS 47.88
  • dendritic cell, human CL0001056
    CSI 2.63
    rCSI 4.04%
    PRS 63.66
  • plasmacytoid dendritic cell, human CL0001058
    CSI 2.62
    rCSI 1.83%
    PRS 57.85
  • early lymphoid progenitor CL0000936
    CSI 2.61
    rCSI 2.3%
    PRS 60.38
  • rod bipolar cell CL0000751
    CSI 2.6
    rCSI 4.68%
    PRS 48.22
  • mesodermal cell CL0000222
    CSI 2.59
    rCSI 3.11%
    PRS 53.42
  • hepatic stellate cell CL0000632
    CSI 2.55
    rCSI 9.55%
    PRS 47.45
  • goblet cell CL0000160
    CSI 2.53
    rCSI 2.39%
    PRS 55.04
  • fibroblast of lung CL0002553
    CSI 2.47
    rCSI 2.3%
    PRS 55.11
  • immature B cell CL0000816
    CSI 2.43
    rCSI 1.8%
    PRS 69.01
  • common myeloid progenitor CL0000049
    CSI 2.25
    rCSI 1.82%
    PRS 56.38
  • Kupffer cell CL0000091
    CSI 2.25
    rCSI 5.14%
    PRS 54.66
  • retina horizontal cell CL0000745
    CSI 2.24
    rCSI 3.42%
    PRS 51.51
  • intestine goblet cell CL0019031
    CSI 2.22
    rCSI 1.97%
    PRS 53.42
  • ionocyte CL0005006
    CSI 2.21
    rCSI 2.37%
    PRS 53.88
  • conjunctival epithelial cell CL1000432
    CSI 2.15
    rCSI 3.28%
    PRS 55.8
  • L6b glutamatergic cortical neuron CL4023038
    CSI 2.13
    rCSI 6.64%
    PRS 39.17
  • CD14-low, CD16-positive monocyte CL0002396
    CSI 2.09
    rCSI 1.61%
    PRS 54.86
  • multi-ciliated epithelial cell CL0005012
    CSI 2.09
    rCSI 2.08%
    PRS 48.75
  • hepatocyte CL0000182
    CSI 2.07
    rCSI 3.7%
    PRS 54.01
  • cerebral cortex endothelial cell CL1001602
    CSI 2.06
    rCSI 3.56%
    PRS 45.32
  • astrocyte of the cerebral cortex CL0002605
    CSI 2.02
    rCSI 4.54%
    PRS 38.47
  • blood vessel endothelial cell CL0000071
    CSI 2.02
    rCSI 4.19%
    PRS 52.45
  • neural crest cell CL0011012
    CSI 2.01
    rCSI 1.59%
    PRS 42.19
  • VIP GABAergic cortical interneuron CL4023016
    CSI 2
    rCSI 2.38%
    PRS 37.55
  • hematopoietic stem cell CL0000037
    CSI 1.99
    rCSI 1.32%
    PRS 58.67
  • stem cell CL0000034
    CSI 1.97
    rCSI 1.9%
    PRS 45.63
  • Mueller cell CL0000636
    CSI 1.96
    rCSI 4.47%
    PRS 47.44
  • respiratory basal cell CL0002633
    CSI 1.92
    rCSI 1.99%
    PRS 60.82
  • myeloid leukocyte CL0000766
    CSI 1.91
    rCSI 1.77%
    PRS 56.29
  • activated type II NK T cell CL0000931
    CSI 1.83
    rCSI 2.06%
    PRS 71.74
  • ciliated epithelial cell CL0000067
    CSI 1.82
    rCSI 1.6%
    PRS 43.43
  • colon epithelial cell CL0011108
    CSI 1.82
    rCSI 1.9%
    PRS 51.95
  • vascular leptomeningeal cell CL4023051
    CSI 1.82
    rCSI 3.18%
    PRS 47.37
  • intestinal epithelial cell CL0002563
    CSI 1.8
    rCSI 1.88%
    PRS 53.65
  • L5 extratelencephalic projecting glutamatergic cortical neuron CL4023041
    CSI 1.79
    rCSI 6.46%
    PRS 36.36
  • retinal rod cell CL0000604
    CSI 1.78
    rCSI 3.14%
    PRS 52.59
  • group 3 innate lymphoid cell CL0001071
    CSI 1.77
    rCSI 1.33%
    PRS 59.92
  • lung ciliated cell CL1000271
    CSI 1.77
    rCSI 2.05%
    PRS 45.05
  • intermediate monocyte CL0002393
    CSI 1.76
    rCSI 2.65%
    PRS 58.36
  • pvalb GABAergic cortical interneuron CL4023018
    CSI 1.73
    rCSI 2.16%
    PRS 35.98
  • chondrocyte CL0000138
    CSI 1.72
    rCSI 2.73%
    PRS 47.61
  • BEST4+ enteroycte CL4030026
    CSI 1.71
    rCSI 2.12%
    PRS 57.18
  • promyelocyte CL0000836
    CSI 1.7
    rCSI 2.45%
    PRS 64.99
  • pancreatic acinar cell CL0002064
    CSI 1.7
    rCSI 2.25%
    PRS 60.76
  • colonocyte CL1000347
    CSI 1.58
    rCSI 2.27%
    PRS 60.17
  • central memory CD8-positive, alpha-beta T cell CL0000907
    CSI 1.57
    rCSI 1.06%
    PRS 67.61
  • glioblast CL0000030
    CSI 1.56
    rCSI 2.49%
    PRS 48.1
  • retinal bipolar neuron CL0000748
    CSI 1.54
    rCSI 2.88%
    PRS 43.9
  • CD14-positive, CD16-positive monocyte CL0002397
    CSI 1.53
    rCSI 2.01%
    PRS 68.72
  • caudal ganglionic eminence derived cortical interneuron CL4023064
    CSI 1.52
    rCSI 2.68%
    PRS 36.74
  • vascular associated smooth muscle cell CL0000359
    CSI 1.5
    rCSI 4.87%
    PRS 56.63
  • OFF-bipolar cell CL0000750
    CSI 1.5
    rCSI 2.05%
    PRS 63.33
  • enterocyte CL0000584
    CSI 1.4
    rCSI 2.26%
    PRS 60.41
  • placental villous trophoblast CL2000060
    CSI 1.4
    rCSI 2.16%
    PRS 53.21
  • peripheral nervous system neuron CL2000032
    CSI 1.39
    rCSI 1.9%
    PRS 47.51
  • paneth cell CL0000510
    CSI 1.39
    rCSI 2.05%
    PRS 71.67
  • erythroid progenitor cell CL0000038
    CSI 1.39
    rCSI 7.94%
    PRS 65.34
  • lung secretory cell CL1000272
    CSI 1.36
    rCSI 3.35%
    PRS 53.16
  • lamp5 GABAergic cortical interneuron CL4023011
    CSI 1.34
    rCSI 2.25%
    PRS 37.72
  • endothelial cell of placenta CL0009092
    CSI 1.3
    rCSI 6.41%
    PRS 66.7
  • glial cell CL0000125
    CSI 1.24
    rCSI 4.74%
    PRS 46.74
  • type B pancreatic cell CL0000169
    CSI 1.23
    rCSI 2.72%
    PRS 52.94
  • sst GABAergic cortical interneuron CL4023017
    CSI 1.22
    rCSI 1.58%
    PRS 38.84
  • effector CD4-positive, alpha-beta T cell CL0001044
    CSI 1.18
    rCSI 3.38%
    PRS 74.57
  • choroid plexus epithelial cell CL0000706
    CSI 1.12
    rCSI 1.84%
    PRS 44.87
  • retinal cone cell CL0000573
    CSI 1.05
    rCSI 1.69%
    PRS 45.1
  • sncg GABAergic cortical interneuron CL4023015
    CSI 1.03
    rCSI 1.66%
    PRS 39.85
  • intestinal crypt stem cell of small intestine CL0009017
    CSI 1.02
    rCSI 2.74%
    PRS 62.92
  • platelet CL0000233
    CSI 1.01
    rCSI 4.18%
    PRS 61.02
  • pancreatic ductal cell CL0002079
    CSI 0.97
    rCSI 1.88%
    PRS 57.68
  • paneth cell of epithelium of small intestine CL1000343
    CSI 0.91
    rCSI 2.56%
    PRS 67.84
  • neural progenitor cell CL0011020
    CSI 0.88
    rCSI 3.87%
    PRS 46.75
  • near-projecting glutamatergic cortical neuron CL4023012
    CSI 0.84
    rCSI 3.19%
    PRS 38.56
  • amacrine cell CL0000561
    CSI 0.84
    rCSI 2.44%
    PRS 45.35
  • L2/3-6 intratelencephalic projecting glutamatergic neuron CL4023040
    CSI 0.76
    rCSI 1.84%
    PRS 36.5
  • chandelier pvalb GABAergic cortical interneuron CL4023036
    CSI 0.63
    rCSI 1.96%
    PRS 41.58
  • corticothalamic-projecting glutamatergic cortical neuron CL4023013
    CSI 0.3
    rCSI 1.7%
    PRS 39.2%
  • indirect pathway medium spiny neuron CL4023029
    CSI 0.3
    rCSI 7.6%
    PRS 38.0%
  • effector memory CD8-positive, alpha-beta T cell, terminally differentiated CL0001062
    CSI 0.5
    rCSI 2.6%
    PRS 67.7%
  • CD1c-positive myeloid dendritic cell CL0002399
    CSI 0.5
    rCSI 0.6%
    PRS 63.6%
  • direct pathway medium spiny neuron CL4023026
    CSI 0.6
    rCSI 13.5%
    PRS 37.1%
  • dopaminergic neuron CL0000700
    CSI 0.6
    rCSI 3.4%
    PRS 40.7%
  • chandelier pvalb GABAergic cortical interneuron CL4023036
    CSI 0.6
    rCSI 2.0%
    PRS 41.6%
  • L2/3-6 intratelencephalic projecting glutamatergic neuron CL4023040
    CSI 0.8
    rCSI 1.8%
    PRS 36.5%
  • amacrine cell CL0000561
    CSI 0.8
    rCSI 2.4%
    PRS 45.4%
  • near-projecting glutamatergic cortical neuron CL4023012
    CSI 0.8
    rCSI 3.2%
    PRS 38.6%
  • neural progenitor cell CL0011020
    CSI 0.9
    rCSI 3.9%
    PRS 46.8%
  • paneth cell of epithelium of small intestine CL1000343
    CSI 0.9
    rCSI 2.6%
    PRS 67.8%
  • pancreatic ductal cell CL0002079
    CSI 1.0
    rCSI 1.9%
    PRS 57.7%
  • platelet CL0000233
    CSI 1.0
    rCSI 4.2%
    PRS 61.0%
  • intestinal crypt stem cell of small intestine CL0009017
    CSI 1.0
    rCSI 2.7%
    PRS 62.9%
  • sncg GABAergic cortical interneuron CL4023015
    CSI 1.0
    rCSI 1.7%
    PRS 39.9%
  • retinal cone cell CL0000573
    CSI 1.1
    rCSI 1.7%
    PRS 45.1%
  • choroid plexus epithelial cell CL0000706
    CSI 1.1
    rCSI 1.8%
    PRS 44.9%
  • effector CD4-positive, alpha-beta T cell CL0001044
    CSI 1.2
    rCSI 3.4%
    PRS 74.6%
  • sst GABAergic cortical interneuron CL4023017
    CSI 1.2
    rCSI 1.6%
    PRS 38.8%
  • type B pancreatic cell CL0000169
    CSI 1.2
    rCSI 2.7%
    PRS 52.9%
  • glial cell CL0000125
    CSI 1.2
    rCSI 4.7%
    PRS 46.7%
  • endothelial cell of placenta CL0009092
    CSI 1.3
    rCSI 6.4%
    PRS 66.7%
  • lamp5 GABAergic cortical interneuron CL4023011
    CSI 1.3
    rCSI 2.3%
    PRS 37.7%
  • lung secretory cell CL1000272
    CSI 1.4
    rCSI 3.4%
    PRS 53.2%
  • erythroid progenitor cell CL0000038
    CSI 1.4
    rCSI 7.9%
    PRS 65.3%
  • paneth cell CL0000510
    CSI 1.4
    rCSI 2.1%
    PRS 71.7%
  • peripheral nervous system neuron CL2000032
    CSI 1.4
    rCSI 1.9%
    PRS 47.5%
  • placental villous trophoblast CL2000060
    CSI 1.4
    rCSI 2.2%
    PRS 53.2%
  • enterocyte CL0000584
    CSI 1.4
    rCSI 2.3%
    PRS 60.4%
  • OFF-bipolar cell CL0000750
    CSI 1.5
    rCSI 2.1%
    PRS 63.3%
  • vascular associated smooth muscle cell CL0000359
    CSI 1.5
    rCSI 4.9%
    PRS 56.6%
  • caudal ganglionic eminence derived cortical interneuron CL4023064
    CSI 1.5
    rCSI 2.7%
    PRS 36.7%
  • CD14-positive, CD16-positive monocyte CL0002397
    CSI 1.5
    rCSI 2.0%
    PRS 68.7%
  • retinal bipolar neuron CL0000748
    CSI 1.5
    rCSI 2.9%
    PRS 43.9%
  • glioblast CL0000030
    CSI 1.6
    rCSI 2.5%
    PRS 48.1%
  • central memory CD8-positive, alpha-beta T cell CL0000907
    CSI 1.6
    rCSI 1.1%
    PRS 67.6%
  • colonocyte CL1000347
    CSI 1.6
    rCSI 2.3%
    PRS 60.2%
  • pancreatic acinar cell CL0002064
    CSI 1.7
    rCSI 2.3%
    PRS 60.8%
  • promyelocyte CL0000836
    CSI 1.7
    rCSI 2.5%
    PRS 65.0%
  • BEST4+ enteroycte CL4030026
    CSI 1.7
    rCSI 2.1%
    PRS 57.2%
  • chondrocyte CL0000138
    CSI 1.7
    rCSI 2.7%
    PRS 47.6%
  • pvalb GABAergic cortical interneuron CL4023018
    CSI 1.7
    rCSI 2.2%
    PRS 36.0%
  • intermediate monocyte CL0002393
    CSI 1.8
    rCSI 2.7%
    PRS 58.4%
  • lung ciliated cell CL1000271
    CSI 1.8
    rCSI 2.1%
    PRS 45.1%
  • group 3 innate lymphoid cell CL0001071
    CSI 1.8
    rCSI 1.3%
    PRS 59.9%
  • retinal rod cell CL0000604
    CSI 1.8
    rCSI 3.1%
    PRS 52.6%
  • L5 extratelencephalic projecting glutamatergic cortical neuron CL4023041
    CSI 1.8
    rCSI 6.5%
    PRS 36.4%
  • intestinal epithelial cell CL0002563
    CSI 1.8
    rCSI 1.9%
    PRS 53.7%
  • vascular leptomeningeal cell CL4023051
    CSI 1.8
    rCSI 3.2%
    PRS 47.4%
  • colon epithelial cell CL0011108
    CSI 1.8
    rCSI 1.9%
    PRS 52.0%
  • ciliated epithelial cell CL0000067
    CSI 1.8
    rCSI 1.6%
    PRS 43.4%
  • activated type II NK T cell CL0000931
    CSI 1.8
    rCSI 2.1%
    PRS 71.7%
  • myeloid leukocyte CL0000766
    CSI 1.9
    rCSI 1.8%
    PRS 56.3%
  • respiratory basal cell CL0002633
    CSI 1.9
    rCSI 2.0%
    PRS 60.8%
  • Mueller cell CL0000636
    CSI 2.0
    rCSI 4.5%
    PRS 47.4%
  • stem cell CL0000034
    CSI 2.0
    rCSI 1.9%
    PRS 45.6%
  • hematopoietic stem cell CL0000037
    CSI 2.0
    rCSI 1.3%
    PRS 58.7%
  • VIP GABAergic cortical interneuron CL4023016
    CSI 2.0
    rCSI 2.4%
    PRS 37.6%
  • neural crest cell CL0011012
    CSI 2.0
    rCSI 1.6%
    PRS 42.2%
  • blood vessel endothelial cell CL0000071
    CSI 2.0
    rCSI 4.2%
    PRS 52.5%
  • astrocyte of the cerebral cortex CL0002605
    CSI 2.0
    rCSI 4.5%
    PRS 38.5%
  • cerebral cortex endothelial cell CL1001602
    CSI 2.1
    rCSI 3.6%
    PRS 45.3%
  • hepatocyte CL0000182
    CSI 2.1
    rCSI 3.7%
    PRS 54.0%
  • multi-ciliated epithelial cell CL0005012
    CSI 2.1
    rCSI 2.1%
    PRS 48.8%
  • CD14-low, CD16-positive monocyte CL0002396
    CSI 2.1
    rCSI 1.6%
    PRS 54.9%
  • L6b glutamatergic cortical neuron CL4023038
    CSI 2.1
    rCSI 6.6%
    PRS 39.2%
  • conjunctival epithelial cell CL1000432
    CSI 2.2
    rCSI 3.3%
    PRS 55.8%
  • ionocyte CL0005006
    CSI 2.2
    rCSI 2.4%
    PRS 53.9%
  • intestine goblet cell CL0019031
    CSI 2.2
    rCSI 2.0%
    PRS 53.4%
  • retina horizontal cell CL0000745
    CSI 2.2
    rCSI 3.4%
    PRS 51.5%
  • Kupffer cell CL0000091
    CSI 2.3
    rCSI 5.1%
    PRS 54.7%
  • common myeloid progenitor CL0000049
    CSI 2.3
    rCSI 1.8%
    PRS 56.4%
  • immature B cell CL0000816
    CSI 2.4
    rCSI 1.8%
    PRS 69.0%
  • fibroblast of lung CL0002553
    CSI 2.5
    rCSI 2.3%
    PRS 55.1%
  • goblet cell CL0000160
    CSI 2.5
    rCSI 2.4%
    PRS 55.0%
  • hepatic stellate cell CL0000632
    CSI 2.6
    rCSI 9.6%
    PRS 47.5%
  • mesodermal cell CL0000222
    CSI 2.6
    rCSI 3.1%
    PRS 53.4%
  • rod bipolar cell CL0000751
    CSI 2.6
    rCSI 4.7%
    PRS 48.2%
  • early lymphoid progenitor CL0000936
    CSI 2.6
    rCSI 2.3%
    PRS 60.4%
  • plasmacytoid dendritic cell, human CL0001058
    CSI 2.6
    rCSI 1.8%
    PRS 57.9%
  • dendritic cell, human CL0001056
    CSI 2.6
    rCSI 4.0%
    PRS 63.7%
  • melanocyte CL0000148
    CSI 2.7
    rCSI 2.0%
    PRS 47.9%
  • secretory cell CL0000151
    CSI 2.7
    rCSI 2.8%
    PRS 55.6%
  • duct epithelial cell CL0000068
    CSI 2.7
    rCSI 4.0%
    PRS 59.1%
  • pro-B cell CL0000826
    CSI 2.8
    rCSI 2.3%
    PRS 56.9%
  • lung interstitial macrophage CL4033043
    CSI 2.8
    rCSI 6.4%
    PRS 73.5%
  • kidney connecting tubule epithelial cell CL1000768
    CSI 2.9
    rCSI 7.4%
    PRS 44.9%
  • small intestine goblet cell CL1000495
    CSI 3.0
    rCSI 6.5%
    PRS 63.8%
  • interstitial cell of Cajal CL0002088
    CSI 3.1
    rCSI 3.9%
    PRS 61.5%
  • enteric smooth muscle cell CL0002504
    CSI 3.1
    rCSI 4.4%
    PRS 57.7%
  • interneuron CL0000099
    CSI 3.1
    rCSI 6.3%
    PRS 44.4%
  • mesenchymal cell CL0008019
    CSI 3.2
    rCSI 8.0%
    PRS 49.9%
  • ciliated cell CL0000064
    CSI 3.3
    rCSI 5.3%
    PRS 52.5%
  • renal alpha-intercalated cell CL0005011
    CSI 3.4
    rCSI 4.5%
    PRS 64.3%
  • double negative thymocyte CL0002489
    CSI 3.4
    rCSI 2.3%
    PRS 65.6%
  • effector CD8-positive, alpha-beta T cell CL0001050
    CSI 3.5
    rCSI 2.6%
    PRS 67.8%
  • large pre-B-II cell CL0000957
    CSI 3.5
    rCSI 10.0%
    PRS 68.4%
  • CD4-positive, CD25-positive, alpha-beta regulatory T cell CL0000792
    CSI 3.6
    rCSI 3.5%
    PRS 71.0%
  • granulocyte monocyte progenitor cell CL0000557
    CSI 3.6
    rCSI 3.1%
    PRS 59.8%

Cell ID: Standard Cell Ontology term used for mapping and comparing cells across experiments. Ensures consistency in analyzing cellular functions across tissues.
Fold Change: Represents the ratio of the current Cell Significance Index to the Cell Significance Index Threshold, indicating how much the gene expression has changed compared to a baseline.
Cell Significance Index: Reflects how strongly a gene is expressed in this specific cell.

Cell ID: Standard Cell Ontology term used for mapping and comparing cells across experiments. Ensures consistency in analyzing cellular functions across tissues.
Fold Change: Represents the ratio of the current Cell Significance Index to the Cell Significance Index Threshold, indicating how much the gene expression has changed compared to a baseline.
Cell Significance Index: Reflects how strongly a gene is expressed in this cell type. Calculated using techniques like effect size estimation and bootstrapping for reliability.

Cell ID: Standard Cell Ontology term used for mapping and comparing cells across experiments. Ensures consistency in analyzing cellular functions across tissues.
Fold Change: Represents the ratio of the current Cell Significance Index to the Cell Significance Index Threshold, indicating how much the gene expression has changed compared to a baseline.
Cell Significance Index: Reflects how strongly a gene is expressed in this cell type. Calculated using techniques like effect size estimation and bootstrapping for reliability.
Network Configuration

Explore relationships of the current gene. Select an Interaction Source: 'ONTOLOGY' for shared pathways (GO/Reactome) or 'STRING' for protein-protein interactions. Further refine by selecting context genes and comparing Cell Significance Index (CSI) scores between baseline and target cell types and their specific contexts.

Comma-separated if multiple.
Comma-separated if multiple.

Legend:
  • Query Gene
  • Node Color (Target Cell CSI, relative to current network):
    • Very High
    • High
    • Medium
    • Low
    • Very Low
    • CSI N/A
  • Node Size: Proportional to Target Cell CSI magnitude
  • STRING PPI Edge
  • Shared Pathway Edge (ONTOLOGY)

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Other Information

This section provides additional information about the gene, including a description generated by an AI language model and details about associated proteins.

## Summary [XPNPEP1](/details-gene/7511) encodes X-prolyl aminopeptidase 1, a cytosolic metalloaminopeptidase that specifically cleaves the N-terminal amino acid from peptides where the penultimate residue is a proline. Functionally, it is involved in proteolysis ([GO:0006508](https://www.ebi.ac.uk/QuickGO/term/GO:0006508)), notably in the catabolism of the pro-inflammatory peptide bradykinin ([GO:0010815](https://www.ebi.ac.uk/QuickGO/term/GO:0010815)). Expression data from the **Overall** context indicates that [XPNPEP1](/details-gene/7511) is a significant gene in a diverse range of cell types, with particularly high significance in antibody-secreting [plasmablasts](/details-cell/CL0000980) and secretory [club cells](/details-cell/CL0000158) of the lung. This pattern suggests roles in both adaptive immunity and mucosal tissue homeostasis. Clinical associations for this gene are noted in OMIM ([602443](https://omim.org/entry/602443)). ## Cellular Roles and Expression Landscape The expression profile of [XPNPEP1](/details-gene/7511) highlights its importance across multiple physiological systems. **Overall**, its most significant expression is observed in hematopoietic lineages and specialized epithelial cells. The highest significance score is found in [plasmablasts](/details-cell/CL0000980) (CSI: 10.58), suggesting a key role in the terminal differentiation or function of antibody-producing cells. Its significance extends to other hematopoietic cells, including [megakaryocytes](/details-cell/CL0000556) (CSI: 7.13) and various progenitor cells like [megakaryocyte-erythroid progenitor cells](/details-cell/CL0000050) and [granulocyte monocyte progenitor cells](/details-cell/CL0000557). This widespread expression in hematopoietic lineages, including T cell subsets like [effector CD8-positive, alpha-beta T cells](/details-cell/CL0001050) and [regulatory T cells](/details-cell/CL0000792), points towards a general role in immune cell peptide metabolism and signaling. Beyond the immune system, [XPNPEP1](/details-gene/7511) shows high significance in secretory and barrier cells. Its strong signal in [club cells](/details-cell/CL0000158) (CSI: 9.12) of the respiratory tract, [M cells of the gut](/details-cell/CL0000682) (CSI: 4.66), and [ciliated cells](/details-cell/CL0000064) (CSI: 3.25) suggests it contributes to the regulation of inflammatory peptides at mucosal surfaces. The gene's activity in [cardiac endothelial cells](/details-cell/CL0010008) and [renal alpha-intercalated cells](/details-cell/CL0005011) further underscores its broad role in regulating vasoactive and inflammatory peptides in various tissues. ## Pathways and Molecular Function [XPNPEP1](/details-gene/7511) functions as a manganese-dependent metalloaminopeptidase ([GO:0070006](https://www.ebi.ac.uk/QuickGO/term/GO:0070006), [GO:0030145](https://www.ebi.ac.uk/QuickGO/term/GO:0030145)), which has been confirmed through biochemical characterization ([Link](https://doi.org/10.1021/bi001585c)). The enzyme exists as a homodimer ([GO:0042803](https://www.ebi.ac.uk/QuickGO/term/GO:0042803)) and is predominantly located in the [cytosol](/details-cell/GO0005829) ([GO:0005737](https://www.ebi.ac.uk/QuickGO/term/GO:0005737)), although its presence in [extracellular exosomes](/details-cell/GO0070062) suggests a potential for intercellular communication. The primary biological process associated with [XPNPEP1](/details-gene/7511) is proteolysis ([GO:0006508](https://www.ebi.ac.uk/QuickGO/term/GO:0006508)), with a well-defined role in the bradykinin catabolic process ([GO:0010815](https://www.ebi.ac.uk/QuickGO/term/GO:0010815)). By cleaving bradykinin, a potent inflammatory mediator, [XPNPEP1](/details-gene/7511) likely helps to resolve local inflammation. This function is consistent with its high expression in immune cells and at mucosal barriers where tight regulation of inflammation is critical. Additionally, its annotation for negative regulation of programmed cell death ([GO:0043069](https://www.ebi.ac.uk/QuickGO/term/GO:0043069)) suggests a pro-survival role, potentially by degrading pro-apoptotic peptides. Recent work has also shown that inhibitors of the M24B aminopeptidase family, to which [XPNPEP1](/details-gene/7511) belongs, can selectively activate the CARD8 inflammasome, implying that [XPNPEP1](/details-gene/7511) may function to suppress this innate immune pathway ([Link](https://doi.org/10.1038/s41589-021-00964-7)). ## Research Directions The widespread yet cell-type-specific significance of [XPNPEP1](/details-gene/7511) provides several avenues for future research, particularly concerning its role in inflammation and host defense. **Proposed Hypotheses:** 1. Given its high significance in [plasmablasts](/details-cell/CL0000980) and its function in bradykinin catabolism, [XPNPEP1](/details-gene/7511) may regulate the local microenvironment during antibody responses by dampening bradykinin-mediated inflammation, thereby facilitating optimal B cell function and survival. 2. In mucosal tissues, high [XPNPEP1](/details-gene/7511) activity in [club cells](/details-cell/CL0000158) and [ciliated cells](/details-cell/CL0000064) could serve as a protective mechanism, degrading inflammatory peptides to maintain epithelial integrity and prevent excessive immune activation in response to environmental stimuli. 3. Based on recent findings ([Link](https://doi.org/10.1038/s41589-021-00964-7)), [XPNPEP1](/details-gene/7511) acts as a negative regulator of the CARD8 inflammasome in myeloid cells. Its constitutive activity may set a threshold for inflammasome activation, preventing spontaneous or excessive pyroptotic cell death. **Key Experimental Approach:** To test the hypothesis that [XPNPEP1](/details-gene/7511) negatively regulates the CARD8 inflammasome (Hypothesis 3), a robust experimental plan could be implemented. First, CRISPR-Cas9 would be used to knock out [XPNPEP1](/details-gene/7511) in a human monocytic cell line (e.g., THP-1) that endogenously expresses CARD8. Wild-type and knockout cells would then be treated with a specific CARD8 inflammasome activator, such as the dipeptidyl peptidase 9 (DPP9) inhibitor Val-boroPro. The functional readouts would include measuring the release of mature IL-1β and IL-18 via ELISA and assessing pyroptotic cell death by LDH release assays. Furthermore, cleavage of Gasdermin D (GSDMD), the executor of pyroptosis, and caspase-1 activation could be quantified by Western blot to confirm inflammasome pathway engagement. An increased response in knockout cells compared to wild-type would validate the inhibitory role of [XPNPEP1](/details-gene/7511). **Therapeutic Potential:** The role of [XPNPEP1](/details-gene/7511) in regulating both bradykinin levels and inflammasome activity makes it a compelling therapeutic target. **Inhibition** of [XPNPEP1](/details-gene/7511) could be a viable strategy in contexts where enhanced inflammation is beneficial, such as in cancer immunotherapy to promote pyroptotic tumor cell death or in fighting certain intracellular pathogens. However, its broad expression pattern necessitates caution, as systemic inhibition could lead to widespread inflammatory side effects. Development of cell-type-specific inhibitors or targeted delivery systems would likely be required to harness its therapeutic potential safely and effectively.

Genular Protein ID: 4139068521

Symbol: XPP1_HUMAN

Name: Aminoacylproline aminopeptidase

UniProtKB Accession Codes:

Database IDs:

Citations:

PubMed ID: 9465902

Title: Isolation and sequence analysis of a human cDNA clone (XPNPEPL) homologous to X-prolyl aminopeptidase (aminopeptidase P).

PubMed ID: 9465902

DOI: 10.1159/000134671

PubMed ID: 10871044

Title: Cloning, chromosomal sublocalization of the human soluble aminopeptidase P gene (XPNPEP1) to 10q25.3 and conservation of the putative proton shuttle and metal ligand binding sites with XPNPEP2.

PubMed ID: 10871044

DOI: 10.1006/abbi.2000.1792

PubMed ID: 11106490

Title: Cloning, expression, and characterization of human cytosolic aminopeptidase P: a single manganese(II)-dependent enzyme.

PubMed ID: 11106490

DOI: 10.1021/bi001585c

PubMed ID: 14702039

Title: Complete sequencing and characterization of 21,243 full-length human cDNAs.

PubMed ID: 14702039

DOI: 10.1038/ng1285

PubMed ID: 17974005

Title: The full-ORF clone resource of the German cDNA consortium.

PubMed ID: 17974005

DOI: 10.1186/1471-2164-8-399

PubMed ID: 15164054

Title: The DNA sequence and comparative analysis of human chromosome 10.

PubMed ID: 15164054

DOI: 10.1038/nature02462

PubMed ID: 15489334

Title: The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC).

PubMed ID: 15489334

DOI: 10.1101/gr.2596504

PubMed ID: 12665801

Title: Exploring proteomes and analyzing protein processing by mass spectrometric identification of sorted N-terminal peptides.

PubMed ID: 12665801

DOI: 10.1038/nbt810

PubMed ID: 19608861

Title: Lysine acetylation targets protein complexes and co-regulates major cellular functions.

PubMed ID: 19608861

DOI: 10.1126/science.1175371

PubMed ID: 21269460

Title: Initial characterization of the human central proteome.

PubMed ID: 21269460

DOI: 10.1186/1752-0509-5-17

PubMed ID: 22814378

Title: N-terminal acetylome analyses and functional insights of the N-terminal acetyltransferase NatB.

PubMed ID: 22814378

DOI: 10.1073/pnas.1210303109

PubMed ID: 24275569

Title: An enzyme assisted RP-RPLC approach for in-depth analysis of human liver phosphoproteome.

PubMed ID: 24275569

DOI: 10.1016/j.jprot.2013.11.014

PubMed ID: 35165443

Title: M24B aminopeptidase inhibitors selectively activate the CARD8 inflammasome.

PubMed ID: 35165443

DOI: 10.1038/s41589-021-00964-7

PubMed ID: 18515364

Title: Structure of human cytosolic X-prolyl aminopeptidase: a double Mn(II)-dependent dimeric enzyme with a novel three-domain subunit.

PubMed ID: 18515364

DOI: 10.1074/jbc.m710274200

Sequence Information:

  • Length: 623
  • Mass: 69918
  • Checksum: DF4F5AF41E2F3876
  • Sequence:
  • MPPKVTSELL RQLRQAMRNS EYVTEPIQAY IIPSGDAHQS EYIAPCDCRR AFVSGFDGSA 
    GTAIITEEHA AMWTDGRYFL QAAKQMDSNW TLMKMGLKDT PTQEDWLVSV LPEGSRVGVD 
    PLIIPTDYWK KMAKVLRSAG HHLIPVKENL VDKIWTDRPE RPCKPLLTLG LDYTGISWKD 
    KVADLRLKMA ERNVMWFVVT ALDEIAWLFN LRGSDVEHNP VFFSYAIIGL ETIMLFIDGD 
    RIDAPSVKEH LLLDLGLEAE YRIQVHPYKS ILSELKALCA DLSPREKVWV SDKASYAVSE 
    TIPKDHRCCM PYTPICIAKA VKNSAESEGM RRAHIKDAVA LCELFNWLEK EVPKGGVTEI 
    SAADKAEEFR RQQADFVDLS FPTISSTGPN GAIIHYAPVP ETNRTLSLDE VYLIDSGAQY 
    KDGTTDVTRT MHFGTPTAYE KECFTYVLKG HIAVSAAVFP TGTKGHLLDS FARSALWDSG 
    LDYLHGTGHG VGSFLNVHEG PCGISYKTFS DEPLEAGMIV TDEPGYYEDG AFGIRIENVV 
    LVVPVKTKYN FNNRGSLTFE PLTLVPIQTK MIDVDSLTDK ECDWLNNYHL TCRDVIGKEL 
    QKQGRQEALE WLIRETQPIS KQH

Genular Protein ID: 988429433

Symbol: Q5T6H7_HUMAN

Name: N/A

UniProtKB Accession Codes:

Database IDs:

Citations:

PubMed ID: 11237011

Title: Initial sequencing and analysis of the human genome.

PubMed ID: 11237011

DOI: 10.1038/35057062

PubMed ID: 15164054

Title: The DNA sequence and comparative analysis of human chromosome 10.

PubMed ID: 15164054

DOI: 10.1038/nature02462

PubMed ID: 15496913

Title: Finishing the euchromatic sequence of the human genome.

PubMed ID: 15496913

DOI: 10.1038/nature03001

PubMed ID: 19608861

Title: Lysine acetylation targets protein complexes and co-regulates major cellular functions.

PubMed ID: 19608861

DOI: 10.1126/science.1175371

PubMed ID: 21269460

Title: Initial characterization of the human central proteome.

PubMed ID: 21269460

DOI: 10.1186/1752-0509-5-17

PubMed ID: 24275569

Title: An enzyme assisted RP-RPLC approach for in-depth analysis of human liver phosphoproteome.

PubMed ID: 24275569

DOI: 10.1016/j.jprot.2013.11.014

Sequence Information:

  • Length: 552
  • Mass: 62139
  • Checksum: 627539255505E5CE
  • Sequence:
  • MWTDGRYFLQ AAKQMDSNWT LMKMGLKDTP TQEDWLVSVL PEGSRVGVDP LIIPTDYWKK 
    MAKVLRSAGH HLIPVKENLV DKIWTDRPER PCKPLLTLGL DYTGISWKDK VADLRLKMAE 
    RNVMWFVVTA LDEIAWLFNL RGSDVEHNPV FFSYAIIGLE TIMLFIDGDR IDAPSVKEHL 
    LLDLGLEAEY RIQVHPYKSI LSELKALCAD LSPREKVWVS DKASYAVSET IPKDHRCCMP 
    YTPICIAKAV KNSAESEGMR RAHIKDAVAL CELFNWLEKE VPKGGVTEIS AADKAEEFRR 
    QQADFVDLSF PTISSTGPNG AIIHYAPVPE TNRTLSLDEV YLIDSGAQYK DGTTDVTRTM 
    HFGTPTAYEK ECFTYVLKGH IAVSAAVFPT GTKGHLLDSF ARSALWDSGL DYLHGTGHGV 
    GSFLNVHEGP CGISYKTFSD EPLEAGMIVT DEPGYYEDGA FGIRIENVVL VVPVKTKYNF 
    NNRGSLTFEP LTLVPIQTKM IDVDSLTDKE CDWLNNYHLT CRDVIGKELQ KQGRQEALEW 
    LIRETQPISK QH