Details for: CPE

Gene ID: 1363

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: CPE

Ensembl ID: ENSG00000109472

Description: carboxypeptidase E

Cell Significance Landscape

Associated with

Significant Cells

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

  • pancreatic D cell CL0000173
    CSI 86.57
    rCSI 85.15%
    PRS 93.09
  • pancreatic A cell CL0000171
    CSI 77.81
    rCSI 81.52%
    PRS 93.15
  • Bergmann glial cell CL0000644
    CSI 51.54
    rCSI 70.52%
    PRS 84.53
  • OFF-bipolar cell CL0000750
    CSI 47.73
    rCSI 65.26%
    PRS 89.83
  • type B pancreatic cell CL0000169
    CSI 37.96
    rCSI 84.03%
    PRS 91.49
  • enteroendocrine cell CL0000164
    CSI 36.48
    rCSI 49.84%
    PRS 89.86
  • lung neuroendocrine cell CL1000223
    CSI 35.91
    rCSI 53.12%
    PRS 92.87
  • astrocyte of the cerebral cortex CL0002605
    CSI 34.32
    rCSI 76.95%
    PRS 79.87
  • retinal cone cell CL0000573
    CSI 33.63
    rCSI 54.13%
    PRS 84.27
  • rod bipolar cell CL0000751
    CSI 33.28
    rCSI 59.8%
    PRS 86.94
  • macroglial cell CL0000126
    CSI 32.51
    rCSI 83.58%
    PRS 88.17
  • type L enteroendocrine cell CL0002279
    CSI 30.07
    rCSI 56.44%
    PRS 93.1
  • fibroblast of lung CL0002553
    CSI 29.72
    rCSI 27.66%
    PRS 92.8
  • interneuron CL0000099
    CSI 28.92
    rCSI 58.07%
    PRS 85.86
  • neuroblast (sensu Vertebrata) CL0000031
    CSI 28.33
    rCSI 36.36%
    PRS 87.98
  • astrocyte CL0000127
    CSI 27.13
    rCSI 57.8%
    PRS 71.27
  • cerebellar granule cell CL0001031
    CSI 27.1
    rCSI 39.84%
    PRS 86.86
  • VIP GABAergic cortical interneuron CL4023016
    CSI 26.85
    rCSI 32.07%
    PRS 79.57
  • adipocyte CL0000136
    CSI 26.3
    rCSI 33.77%
    PRS 84.14
  • L2/3-6 intratelencephalic projecting glutamatergic neuron CL4023040
    CSI 26.04
    rCSI 63.29%
    PRS 77.39
  • neural cell CL0002319
    CSI 25.37
    rCSI 95.73%
    PRS 77.49
  • retinal bipolar neuron CL0000748
    CSI 25.14
    rCSI 47.08%
    PRS 83.77
  • bronchus fibroblast of lung CL2000093
    CSI 25.08
    rCSI 20.38%
    PRS 90.9
  • neural crest cell CL0011012
    CSI 23.89
    rCSI 18.88%
    PRS 85.11
  • enteroendocrine cell of small intestine CL0009006
    CSI 23.58
    rCSI 51.92%
    PRS 93.89
  • sncg GABAergic cortical interneuron CL4023015
    CSI 23.39
    rCSI 37.61%
    PRS 80.49
  • myofibroblast cell CL0000186
    CSI 22.84
    rCSI 31.63%
    PRS 88.49
  • vascular leptomeningeal cell CL4023051
    CSI 22.58
    rCSI 39.59%
    PRS 88.25
  • retinal rod cell CL0000604
    CSI 22.2
    rCSI 39.12%
    PRS 87.63
  • perivascular cell CL4033054
    CSI 22.07
    rCSI 30.17%
    PRS 94.22
  • neuroblast (sensu Nematoda and Protostomia) CL0000338
    CSI 21.77
    rCSI 25.14%
    PRS 84.47
  • ON-bipolar cell CL0000749
    CSI 21.67
    rCSI 32.21%
    PRS 90.36
  • inhibitory interneuron CL0000498
    CSI 21.65
    rCSI 49.98%
    PRS 83.11
  • alveolar macrophage CL0000583
    CSI 20.78
    rCSI 34.23%
    PRS 93.13
  • cerebral cortex neuron CL0010012
    CSI 20.78
    rCSI 84.67%
    PRS 84.71
  • caudal ganglionic eminence derived cortical interneuron CL4023064
    CSI 20.66
    rCSI 36.48%
    PRS 78.95
  • alveolar adventitial fibroblast CL4028006
    CSI 20.64
    rCSI 32.6%
    PRS 92.3
  • L6b glutamatergic cortical neuron CL4023038
    CSI 20.52
    rCSI 64.13%
    PRS 80.87
  • pvalb GABAergic cortical interneuron CL4023018
    CSI 19.73
    rCSI 24.54%
    PRS 77.3
  • skin fibroblast CL0002620
    CSI 19.57
    rCSI 16.87%
    PRS 90.99
  • pancreatic PP cell CL0002275
    CSI 19.5
    rCSI 77.6%
    PRS 94.26
  • Mueller cell CL0000636
    CSI 19.07
    rCSI 43.51%
    PRS 85.54
  • keratocyte CL0002363
    CSI 18.74
    rCSI 45.04%
    PRS 92.49
  • neuron CL0000540
    CSI 18.63
    rCSI 49.63%
    PRS 80.2
  • cerebral cortex endothelial cell CL1001602
    CSI 18.62
    rCSI 32.2%
    PRS 86.56
  • near-projecting glutamatergic cortical neuron CL4023012
    CSI 18.59
    rCSI 70.26%
    PRS 79.75
  • L5 extratelencephalic projecting glutamatergic cortical neuron CL4023041
    CSI 18.54
    rCSI 66.71%
    PRS 77.61
  • microcirculation associated smooth muscle cell CL0008035
    CSI 17.32
    rCSI 50.14%
    PRS 90.78
  • lung secretory cell CL1000272
    CSI 17.19
    rCSI 42.56%
    PRS 92.14
  • kidney loop of Henle thin descending limb epithelial cell CL1001111
    CSI 17.12
    rCSI 24.27%
    PRS 89.57
  • interstitial cell of Cajal CL0002088
    CSI 16.9
    rCSI 21.51%
    PRS 94.52
  • tracheobronchial smooth muscle cell CL0019019
    CSI 16.88
    rCSI 29.77%
    PRS 93.9
  • retinal ganglion cell CL0000740
    CSI 16.82
    rCSI 37.17%
    PRS 81.81
  • choroid plexus epithelial cell CL0000706
    CSI 16.75
    rCSI 27.43%
    PRS 85.14
  • GABAergic amacrine cell CL4030027
    CSI 16.4
    rCSI 56.18%
    PRS 79.72
  • pancreatic epsilon cell CL0005019
    CSI 15.67
    rCSI 73.06%
    PRS 94.48
  • sst GABAergic cortical interneuron CL4023017
    CSI 15.55
    rCSI 20.04%
    PRS 80.63
  • retinal blood vessel endothelial cell CL0002585
    CSI 15.48
    rCSI 24.73%
    PRS 93.51
  • mural cell CL0008034
    CSI 15.21
    rCSI 51.55%
    PRS 87.92
  • alveolar type 1 fibroblast cell CL4028004
    CSI 15.05
    rCSI 16.49%
    PRS 93.02
  • glycinergic amacrine cell CL4030028
    CSI 14.9
    rCSI 38.83%
    PRS 85.97
  • pericyte CL0000669
    CSI 14.79
    rCSI 39.39%
    PRS 69.42
  • adventitial cell CL0002503
    CSI 14.75
    rCSI 35.22%
    PRS 93.44
  • vascular associated smooth muscle cell CL0000359
    CSI 14.49
    rCSI 47.01%
    PRS 89.81
  • hepatic stellate cell CL0000632
    CSI 14.19
    rCSI 53.17%
    PRS 87.55
  • lung pericyte CL0009089
    CSI 14.19
    rCSI 37.45%
    PRS 94.84
  • intestine goblet cell CL0019031
    CSI 14.01
    rCSI 12.44%
    PRS 89.18
  • oligodendrocyte precursor cell CL0002453
    CSI 14
    rCSI 30.8%
    PRS 75.24
  • L2/3 intratelencephalic projecting glutamatergic neuron CL4030059
    CSI 13.84
    rCSI 30.03%
    PRS 81.15
  • epithelial cell of lung CL0000082
    CSI 13.83
    rCSI 11.46%
    PRS 92.3
  • peripheral nervous system neuron CL2000032
    CSI 13.8
    rCSI 18.81%
    PRS 85.56
  • contractile cell CL0000183
    CSI 13.74
    rCSI 40.55%
    PRS 90.88
  • fallopian tube secretory epithelial cell CL4030006
    CSI 13.38
    rCSI 12.88%
    PRS 90.07
  • cerebral cortex GABAergic interneuron CL0010011
    CSI 13.23
    rCSI 39.06%
    PRS 91.2
  • basal cell CL0000646
    CSI 13.18
    rCSI 17.62%
    PRS 89.02
  • amacrine cell CL0000561
    CSI 13.09
    rCSI 37.94%
    PRS 83.67
  • myoepithelial cell CL0000185
    CSI 12.82
    rCSI 32.44%
    PRS 93.54
  • radial glial cell CL0000681
    CSI 12.71
    rCSI 17.65%
    PRS 89.98
  • smooth muscle cell CL0000192
    CSI 12.52
    rCSI 29.86%
    PRS 85.97
  • type EC enteroendocrine cell CL0000577
    CSI 12.52
    rCSI 44.43%
    PRS 92.65
  • mature astrocyte CL0002627
    CSI 12.48
    rCSI 53.04%
    PRS 85.16
  • stem cell CL0000034
    CSI 12.17
    rCSI 11.73%
    PRS 87.69
  • renal interstitial pericyte CL1001318
    CSI 12.06
    rCSI 33.24%
    PRS 89.13
  • differentiation-committed oligodendrocyte precursor CL4023059
    CSI 12.04
    rCSI 21.88%
    PRS 85.54
  • ependymal cell CL0000065
    CSI 11.93
    rCSI 24.21%
    PRS 74.85
  • L5/6 near-projecting glutamatergic neuron CL4030067
    CSI 11.89
    rCSI 39.08%
    PRS 80.87
  • corticothalamic-projecting glutamatergic cortical neuron CL4023013
    CSI 11.82
    rCSI 69.61%
    PRS 79.99
  • mesodermal cell CL0000222
    CSI 11.69
    rCSI 14.03%
    PRS 90.43
  • OFFx cell CL4033036
    CSI 11.57
    rCSI 54.43%
    PRS 82.38
  • P/D1 enteroendocrine cell CL0002268
    CSI 11.39
    rCSI 62%
    PRS 93.64
  • dopaminergic neuron CL0000700
    CSI 10.93
    rCSI 61.79%
    PRS 81.47
  • kidney loop of Henle thin ascending limb epithelial cell CL1001107
    CSI 10.74
    rCSI 27.76%
    PRS 89.12
  • progenitor cell CL0011026
    CSI 10.67
    rCSI 22.69%
    PRS 85.53
  • L4 intratelencephalic projecting glutamatergic neuron CL4030063
    CSI 10.48
    rCSI 25.07%
    PRS 81.95
  • forebrain radial glial cell CL0013000
    CSI 10.3
    rCSI 33.06%
    PRS 91.16
  • mucus secreting cell CL0000319
    CSI 10.13
    rCSI 16.09%
    PRS 95.21
  • endothelial cell of periportal hepatic sinusoid CL0019021
    CSI 10.02
    rCSI 45.99%
    PRS 93.14
  • enteric smooth muscle cell CL0002504
    CSI 9.93
    rCSI 14.18%
    PRS 91.55
  • glioblast CL0000030
    CSI 9.8
    rCSI 15.64%
    PRS 84.46
  • luminal cell of prostate epithelium CL0002340
    CSI 9.58
    rCSI 51.53%
    PRS 94.83
  • odontoblast CL0000060
    CSI 0.3
    rCSI 6.1%
    PRS 95.4%
  • acinar cell of salivary gland CL0002623
    CSI 0.4
    rCSI 8.5%
    PRS 95.8%
  • osteoblast CL0000062
    CSI 0.5
    rCSI 11.4%
    PRS 95.4%
  • enteric neuron CL0007011
    CSI 0.8
    rCSI 11.6%
    PRS 92.5%
  • stromal cell of ovary CL0002132
    CSI 0.9
    rCSI 2.4%
    PRS 94.2%
  • mesenchymal lymphangioblast CL0005021
    CSI 1.1
    rCSI 29.1%
    PRS 94.5%
  • mammary gland epithelial cell CL0002327
    CSI 1.2
    rCSI 4.1%
    PRS 95.0%
  • bronchiolar smooth muscle cell CL4033017
    CSI 1.3
    rCSI 19.2%
    PRS 94.8%
  • mesenchymal stem cell CL0000134
    CSI 1.4
    rCSI 15.8%
    PRS 93.2%
  • exhausted T cell CL0011025
    CSI 1.6
    rCSI 27.2%
    PRS 94.2%
  • GABAergic interneuron CL0011005
    CSI 1.7
    rCSI 26.5%
    PRS 91.9%
  • ON midget ganglion cell CL4033046
    CSI 1.8
    rCSI 37.2%
    PRS 83.5%
  • ciliated epithelial cell CL0000067
    CSI 2.0
    rCSI 1.8%
    PRS 83.3%
  • OFF midget ganglion cell CL4033047
    CSI 2.2
    rCSI 44.5%
    PRS 84.1%
  • vasa recta ascending limb cell CL1001131
    CSI 2.2
    rCSI 10.1%
    PRS 94.5%
  • acinar cell CL0000622
    CSI 2.4
    rCSI 3.6%
    PRS 95.8%
  • ON parasol ganglion cell CL4033052
    CSI 2.7
    rCSI 38.8%
    PRS 84.5%
  • indirect pathway medium spiny neuron CL4023029
    CSI 2.8
    rCSI 67.8%
    PRS 77.4%
  • direct pathway medium spiny neuron CL4023026
    CSI 2.9
    rCSI 68.4%
    PRS 77.3%
  • starburst amacrine cell CL0004232
    CSI 2.9
    rCSI 24.1%
    PRS 78.9%
  • medium spiny neuron CL1001474
    CSI 3.0
    rCSI 25.7%
    PRS 84.0%
  • neuroplacodal cell CL0000032
    CSI 3.0
    rCSI 27.6%
    PRS 88.6%
  • H2 horizontal cell CL0004218
    CSI 3.0
    rCSI 14.9%
    PRS 86.6%
  • retinal pigment epithelial cell CL0002586
    CSI 3.1
    rCSI 6.1%
    PRS 88.3%
  • blood vessel smooth muscle cell CL0019018
    CSI 3.2
    rCSI 26.4%
    PRS 89.3%
  • diffuse bipolar 4 cell CL4033031
    CSI 3.3
    rCSI 37.3%
    PRS 80.0%
  • kidney interstitial cell CL1000500
    CSI 3.4
    rCSI 55.4%
    PRS 93.0%
  • pancreatic stellate cell CL0002410
    CSI 3.4
    rCSI 19.7%
    PRS 92.9%
  • lamp5 GABAergic cortical interneuron CL4023011
    CSI 3.7
    rCSI 6.2%
    PRS 79.5%
  • erythroid lineage cell CL0000764
    CSI 3.8
    rCSI 24.2%
    PRS 93.7%
  • Purkinje cell CL0000121
    CSI 3.8
    rCSI 49.8%
    PRS 92.5%
  • eye photoreceptor cell CL0000287
    CSI 3.8
    rCSI 43.0%
    PRS 93.1%
  • smooth muscle cell of the pulmonary artery CL0002591
    CSI 4.1
    rCSI 31.0%
    PRS 92.2%
  • cardiac muscle cell CL0000746
    CSI 4.3
    rCSI 6.1%
    PRS 84.1%
  • mesangial cell CL0000650
    CSI 4.3
    rCSI 17.5%
    PRS 95.4%
  • cone retinal bipolar cell CL0000752
    CSI 4.6
    rCSI 59.6%
    PRS 88.2%
  • endothelial cell of uterus CL0009095
    CSI 4.9
    rCSI 35.4%
    PRS 95.4%
  • neural progenitor cell CL0011020
    CSI 4.9
    rCSI 21.6%
    PRS 81.5%
  • basal cell of prostate epithelium CL0002341
    CSI 5.0
    rCSI 14.5%
    PRS 93.5%
  • mesenchymal cell CL0008019
    CSI 5.0
    rCSI 12.8%
    PRS 86.9%
  • chandelier pvalb GABAergic cortical interneuron CL4023036
    CSI 5.1
    rCSI 16.1%
    PRS 82.5%
  • vein endothelial cell of respiratory system CL4033008
    CSI 5.2
    rCSI 35.8%
    PRS 94.3%
  • luminal epithelial cell of mammary gland CL0002326
    CSI 5.2
    rCSI 9.5%
    PRS 95.5%
  • Cajal-Retzius cell CL0000695
    CSI 5.3
    rCSI 41.7%
    PRS 92.8%
  • GABAergic neuron CL0000617
    CSI 5.7
    rCSI 19.1%
    PRS 79.0%
  • central nervous system neuron CL2000029
    CSI 5.7
    rCSI 41.9%
    PRS 83.9%
  • smooth muscle cell of prostate CL1000487
    CSI 5.8
    rCSI 33.8%
    PRS 94.4%
  • diffuse bipolar 1 cell CL4033027
    CSI 5.8
    rCSI 43.9%
    PRS 81.3%
  • enteroendocrine cell of colon CL0009042
    CSI 5.9
    rCSI 27.8%
    PRS 93.4%
  • stromal cell CL0000499
    CSI 6.0
    rCSI 17.0%
    PRS 88.0%
  • flat midget bipolar cell CL4033033
    CSI 6.0
    rCSI 43.2%
    PRS 82.7%
  • cerebellar neuron CL1001611
    CSI 6.1
    rCSI 53.5%
    PRS 79.5%
  • lung endothelial cell CL1001567
    CSI 6.1
    rCSI 14.2%
    PRS 96.3%
  • basal-myoepithelial cell of mammary gland CL0002324
    CSI 6.1
    rCSI 11.6%
    PRS 96.1%
  • glial cell CL0000125
    CSI 6.2
    rCSI 23.5%
    PRS 85.5%
  • serotonergic neuron CL0000850
    CSI 6.3
    rCSI 28.3%
    PRS 77.8%
  • endocrine cell CL0000163
    CSI 6.7
    rCSI 34.2%
    PRS 96.6%
  • retina horizontal cell CL0000745
    CSI 6.7
    rCSI 10.3%
    PRS 88.5%
  • cerebral cortex pyramidal neuron CL4023111
    CSI 6.9
    rCSI 42.3%
    PRS 92.0%
  • fibroblast of breast CL4006000
    CSI 6.9
    rCSI 29.0%
    PRS 93.1%
  • neuroendocrine cell CL0000165
    CSI 7.0
    rCSI 27.1%
    PRS 94.1%
  • intestinal epithelial cell CL0002563
    CSI 7.0
    rCSI 7.4%
    PRS 89.3%
  • diffuse bipolar 2 cell CL4033028
    CSI 7.1
    rCSI 55.3%
    PRS 84.6%
  • tendon cell CL0000388
    CSI 7.2
    rCSI 18.6%
    PRS 94.0%
  • midbrain dopaminergic neuron CL2000097
    CSI 7.2
    rCSI 46.0%
    PRS 85.8%
  • glutamatergic neuron CL0000679
    CSI 7.5
    rCSI 15.3%
    PRS 80.7%
  • S cone cell CL0003050
    CSI 7.7
    rCSI 33.7%
    PRS 87.2%
  • diffuse bipolar 6 cell CL4033032
    CSI 7.8
    rCSI 40.8%
    PRS 82.2%
  • pancreatic ductal cell CL0002079
    CSI 8.0
    rCSI 15.5%
    PRS 92.8%
  • mesenchymal stem cell of adipose tissue CL0002570
    CSI 8.0
    rCSI 44.7%
    PRS 92.6%
  • mononuclear phagocyte CL0000113
    CSI 8.1
    rCSI 17.7%
    PRS 93.7%
  • diffuse bipolar 3a cell CL4033029
    CSI 9.1
    rCSI 61.9%
    PRS 83.9%
  • invaginating midget bipolar cell CL4033034
    CSI 9.2
    rCSI 54.5%
    PRS 83.2%
  • chondrocyte CL0000138
    CSI 9.4
    rCSI 15.0%
    PRS 87.3%
  • epithelial cell CL0000066
    CSI 9.5
    rCSI 14.5%
    PRS 80.3%
  • diffuse bipolar 3b cell CL4033030
    CSI 9.5
    rCSI 62.9%
    PRS 86.0%
  • luminal cell of prostate epithelium CL0002340
    CSI 9.6
    rCSI 51.5%
    PRS 94.8%
  • glioblast CL0000030
    CSI 9.8
    rCSI 15.6%
    PRS 84.5%
  • enteric smooth muscle cell CL0002504
    CSI 9.9
    rCSI 14.2%
    PRS 91.6%
  • endothelial cell of periportal hepatic sinusoid CL0019021
    CSI 10.0
    rCSI 46.0%
    PRS 93.1%
  • mucus secreting cell CL0000319
    CSI 10.1
    rCSI 16.1%
    PRS 95.2%
  • forebrain radial glial cell CL0013000
    CSI 10.3
    rCSI 33.1%
    PRS 91.2%
  • L4 intratelencephalic projecting glutamatergic neuron CL4030063
    CSI 10.5
    rCSI 25.1%
    PRS 82.0%
  • progenitor cell CL0011026
    CSI 10.7
    rCSI 22.7%
    PRS 85.5%
  • kidney loop of Henle thin ascending limb epithelial cell CL1001107
    CSI 10.7
    rCSI 27.8%
    PRS 89.1%
  • dopaminergic neuron CL0000700
    CSI 10.9
    rCSI 61.8%
    PRS 81.5%
  • P/D1 enteroendocrine cell CL0002268
    CSI 11.4
    rCSI 62.0%
    PRS 93.6%
  • OFFx cell CL4033036
    CSI 11.6
    rCSI 54.4%
    PRS 82.4%
  • mesodermal cell CL0000222
    CSI 11.7
    rCSI 14.0%
    PRS 90.4%
  • corticothalamic-projecting glutamatergic cortical neuron CL4023013
    CSI 11.8
    rCSI 69.6%
    PRS 80.0%
  • L5/6 near-projecting glutamatergic neuron CL4030067
    CSI 11.9
    rCSI 39.1%
    PRS 80.9%
  • ependymal cell CL0000065
    CSI 11.9
    rCSI 24.2%
    PRS 74.9%
  • differentiation-committed oligodendrocyte precursor CL4023059
    CSI 12.0
    rCSI 21.9%
    PRS 85.5%
  • renal interstitial pericyte CL1001318
    CSI 12.1
    rCSI 33.2%
    PRS 89.1%
  • stem cell CL0000034
    CSI 12.2
    rCSI 11.7%
    PRS 87.7%
  • mature astrocyte CL0002627
    CSI 12.5
    rCSI 53.0%
    PRS 85.2%
  • type EC enteroendocrine cell CL0000577
    CSI 12.5
    rCSI 44.4%
    PRS 92.7%
  • smooth muscle cell CL0000192
    CSI 12.5
    rCSI 29.9%
    PRS 86.0%
  • radial glial cell CL0000681
    CSI 12.7
    rCSI 17.7%
    PRS 90.0%
  • myoepithelial cell CL0000185
    CSI 12.8
    rCSI 32.4%
    PRS 93.5%

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 Carboxypeptidase E ([CPE](/details-gene/1363)) is a zinc-dependent metallocarboxypeptidase that plays a critical role in the post-translational modification of peptide hormones and neuropeptides. It functions by cleaving C-terminal basic amino acid residues from prohormone and proneuropeptide precursors, a final and essential step in their maturation and activation. Expression data indicates that [CPE](/details-gene/1363) is a defining marker for cells with high secretory activity, particularly in the endocrine and nervous systems. It is most significantly expressed in pancreatic islet cells, including [pancreatic D cell](/details-cell/CL0000173)s and [pancreatic A cell](/details-cell/CL0000171)s, as well as in various neural cell types such as [Bergmann glial cell](/details-cell/CL0000644)s and [enteroendocrine cell](/details-cell/CL0000164)s. Clinically, mutations in the [CPE](/details-gene/1363) gene are associated with a rare syndrome characterized by obesity, intellectual disability, and hypogonadotropic hypogonadism ([153245](https://omim.org/entry/153245)), underscoring its non-redundant role in metabolic and neuronal regulation. ## Cellular Roles and Expression Landscape The expression pattern of [CPE](/details-gene/1363) is highly specific to cells with prominent secretory functions, particularly those involved in endocrine signaling and neurotransmission. **Overall**, its role as a key processing enzyme is most pronounced in the pancreas, where it shows exceptionally high significance in [pancreatic D cell](/details-cell/CL0000173) (CSI: 86.57), [pancreatic A cell](/details-cell/CL0000171) (CSI: 77.81), and [type B pancreatic cell](/details-cell/CL0000169) (CSI: 37.96). This is consistent with its established function in processing somatostatin, glucagon, and insulin precursors, respectively. Its high expression in other neuroendocrine cells, such as [enteroendocrine cell](/details-cell/CL0000164)s and [lung neuroendocrine cell](/details-cell/CL1000223), further highlights its broad importance in systemic peptide hormone maturation. In the central nervous system, [CPE](/details-gene/1363) is a significant marker for both neurons and glial cells, suggesting a widespread role in neuropeptide processing. It is highly expressed in specialized cells of the cerebellum and retina, such as [Bergmann glial cell](/details-cell/CL0000644) (CSI: 51.54), [OFF-bipolar cell](/details-cell/CL0000750) (CSI: 47.73), and [retinal cone cell](/details-cell/CL0000573) (CSI: 33.63). Its presence in [astrocyte of the cerebral cortex](/details-cell/CL0002605) and [interneuron](/details-cell/CL0000099)s indicates its involvement in the modulation of neurotransmission and neuronal support throughout the brain. This specialized expression profile underscores the gene's essential function in the precise biochemical control of intercellular communication in both the endocrine and nervous systems. ## Pathways and Molecular Function The molecular functions of [CPE](/details-gene/1363) are centered on its enzymatic activity and its role within the secretory pathway. As a metallocarboxypeptidase, its primary functions are 'carboxypeptidase activity' ([GO:0004180](https://www.ebi.ac.uk/QuickGO/term/GO:0004180)) and 'metallocarboxypeptidase activity' ([GO:0004181](https://www.ebi.ac.uk/QuickGO/term/GO:0004181)), requiring 'zinc ion binding' ([GO:0008270](https://www.ebi.ac.uk/QuickGO/term/GO:0008270)) for catalysis. Biologically, [CPE](/details-gene/1363) is a key component of the 'peptide metabolic process' ([GO:0006518](https://www.ebi.ac.uk/QuickGO/term/GO:0006518)) and 'protein processing' ([GO:0016485](https://www.ebi.ac.uk/QuickGO/term/GO:0016485)). This is directly reflected in its involvement in specific pathways like 'insulin processing' ([GO:0030070](https://www.ebi.ac.uk/QuickGO/term/GO:0030070); [R-HSA-264876](https://reactome.org/content/detail/R-HSA-264876)) and the broader 'neuropeptide signaling pathway' ([GO:0007218](https://www.ebi.ac.uk/QuickGO/term/GO:0007218)) and 'peptide hormone metabolism' ([R-HSA-2980736](https://reactome.org/content/detail/R-HSA-2980736)). Its cellular localization is consistent with this role, being found in the 'Golgi apparatus' ([GO:0005794](https://www.ebi.ac.uk/QuickGO/term/GO:0005794)) where proproteins are sorted, and within the 'secretory granule membrane' ([GO:0030667](https://www.ebi.ac.uk/QuickGO/term/GO:0030667)) where final processing occurs. The protein is also found in the 'extracellular exosome' ([GO:0070062](https://www.ebi.ac.uk/QuickGO/term/GO:0070062)), suggesting additional roles in intercellular communication beyond its canonical processing function. ## Research Directions The well-defined enzymatic function of [CPE](/details-gene/1363) and the severe clinical phenotypes associated with its deficiency provide a strong foundation for future research, particularly in dissecting its cell-specific roles and its potential as a therapeutic target. **Proposed Hypotheses:** 1. The neurological deficits, such as intellectual disability, associated with [CPE](/details-gene/1363) mutations stem from impaired processing of a specific subset of neuropeptides critical for synaptic maturation and plasticity in glial cells and interneurons, rather than a global disruption of all neuropeptide signaling. 2. In the context of cancer, an N-terminal truncated splice isoform of [CPE](/details-gene/1363) ([Link](https://doi.org/10.1172/jci40433)) may be specifically expressed by tumor-associated [fibroblast of lung](/details-cell/CL0002553)s, where it functions abnormally to process extracellular matrix proteins or growth factors, thereby actively promoting a pro-metastatic microenvironment. **Experimental Approach:** To test the first hypothesis regarding the neurological basis of [CPE](/details-gene/1363) deficiency, a multi-faceted approach using a brain-specific conditional knockout mouse model would be highly informative. 1. **Model:** Generate mice with a floxed [CPE](/details-gene/1363) allele and cross them with mice expressing Cre recombinase under cell-type-specific promoters (e.g., GFAP for astrocytes, GAD2 for GABAergic interneurons) to delete [CPE](/details-gene/1363) in distinct neural populations. 2. **Analysis:** The resulting knockout mice would be subjected to a battery of behavioral tests to assess cognitive and motor functions. Brain tissue from these animals would be analyzed using peptidomics (e.g., LC-MS/MS) to identify specific proneuropeptides that accumulate and mature neuropeptides that are depleted. 3. **Validation:** Electrophysiological recordings from brain slices could then be used to determine if the identified neuropeptide deficits correlate with impairments in synaptic transmission and long-term potentiation. **Therapeutic Potential:** The therapeutic applicability of targeting [CPE](/details-gene/1363) is highly context-dependent. For congenital deficiency syndromes characterized by loss-of-function, a potential but challenging strategy would be enzyme replacement therapy. Conversely, in oncology, where a specific splice isoform is associated with metastasis ([Link](https://doi.org/10.1172/jci40433)), **inhibition** is the desired approach. Given that this isoform is secreted, it represents a promising target for isoform-specific monoclonal antibodies or antibody-drug conjugates, which could neutralize its pro-tumorigenic activity in the tumor microenvironment with high specificity.

Genular Protein ID: 4015157520

Symbol: CBPE_HUMAN

Name: Carboxypeptidase E

UniProtKB Accession Codes:

Database IDs:

Citations:

PubMed ID: 2334405

Title: Human carboxypeptidase E. Isolation and characterization of the cDNA, sequence conservation, expression and processing in vitro.

PubMed ID: 2334405

DOI: 10.1042/bj2670517

PubMed ID: 9662053

Title: Organization of the human carboxypeptidase E gene and molecular scanning for mutations in Japanese subjects with NIDDM or obesity.

PubMed ID: 9662053

DOI: 10.1007/s001250050971

PubMed ID: 14702039

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

PubMed ID: 14702039

DOI: 10.1038/ng1285

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: 21285511

Title: An N-terminal truncated carboxypeptidase E splice isoform induces tumor growth and is a biomarker for predicting future metastasis in human cancers.

PubMed ID: 21285511

DOI: 10.1172/jci40433

PubMed ID: 30882370

Title:

PubMed ID: 30882370

DOI: 10.1172/jci128836

PubMed ID: 34383079

Title: BDV syndrome: An emerging syndrome with profound obesity and neurodevelopmental delay resembling Prader-Willi syndrome.

PubMed ID: 34383079

DOI: 10.1210/clinem/dgab592

PubMed ID: 32936766

Title: A new cause of obesity syndrome associated with a mutation in the carboxypeptidase gene detected in three siblings with obesity, intellectual disability and hypogonadotropic hypogonadism.

PubMed ID: 32936766

DOI: 10.4274/jcrpe.galenos.2020.2020.0101

PubMed ID: 16959974

Title: The consensus coding sequences of human breast and colorectal cancers.

PubMed ID: 16959974

DOI: 10.1126/science.1133427

Sequence Information:

  • Length: 476
  • Mass: 53151
  • Checksum: D561AC0285A51E86
  • Sequence:
  • MAGRGGSALL ALCGALAACG WLLGAEAQEP GAPAAGMRRR RRLQQEDGIS FEYHRYPELR 
    EALVSVWLQC TAISRIYTVG RSFEGRELLV IELSDNPGVH EPGEPEFKYI GNMHGNEAVG 
    RELLIFLAQY LCNEYQKGNE TIVNLIHSTR IHIMPSLNPD GFEKAASQPG ELKDWFVGRS 
    NAQGIDLNRN FPDLDRIVYV NEKEGGPNNH LLKNMKKIVD QNTKLAPETK AVIHWIMDIP 
    FVLSANLHGG DLVANYPYDE TRSGSAHEYS SSPDDAIFQS LARAYSSFNP AMSDPNRPPC 
    RKNDDDSSFV DGTTNGGAWY SVPGGMQDFN YLSSNCFEIT VELSCEKFPP EETLKTYWED 
    NKNSLISYLE QIHRGVKGFV RDLQGNPIAN ATISVEGIDH DVTSAKDGDY WRLLIPGNYK 
    LTASAPGYLA ITKKVAVPYS PAAGVDFELE SFSERKEEEK EELMEWWKMM SETLNF