Details for: GPAA1

Gene ID: 8733

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: GPAA1

Ensembl ID: ENSG00000197858

Description: glycosylphosphatidylinositol anchor attachment 1

Selected Context(s):  Overall

Cell Significance Landscape

Contexts:

Associated with

Significant Cells

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

  • fallopian tube secretory epithelial cell CL4030006
    CSI 39.51
    rCSI 38.04%
    PRS 24.2
  • pancreatic ductal cell CL0002079
    CSI 16.89
    rCSI 32.85%
    PRS 23.99
  • extravillous trophoblast CL0008036
    CSI 15.03
    rCSI 18.6%
    PRS 20.51
  • ependymal cell CL0000065
    CSI 14.69
    rCSI 29.81%
    PRS 12.4
  • pancreatic A cell CL0000171
    CSI 14.55
    rCSI 15.24%
    PRS 24.78
  • vascular associated smooth muscle cell CL0000359
    CSI 14.48
    rCSI 46.97%
    PRS 27.8
  • lung secretory cell CL1000272
    CSI 12.62
    rCSI 31.23%
    PRS 21.65
  • cardiac muscle cell CL0000746
    CSI 11.88
    rCSI 17.04%
    PRS 18.19
  • duct epithelial cell CL0000068
    CSI 11.83
    rCSI 17.31%
    PRS 24.77
  • intermediate monocyte CL0002393
    CSI 11.6
    rCSI 17.51%
    PRS 23.89
  • placental villous trophoblast CL2000060
    CSI 11.24
    rCSI 17.36%
    PRS 21.82
  • retina horizontal cell CL0000745
    CSI 11.12
    rCSI 16.95%
    PRS 21.53
  • plasmablast CL0000980
    CSI 8.85
    rCSI 6.96%
    PRS 28.37
  • transit amplifying cell of colon CL0009011
    CSI 8.65
    rCSI 10.15%
    PRS 26.71
  • central memory CD4-positive, alpha-beta T cell CL0000904
    CSI 8.56
    rCSI 5.06%
    PRS 32.96
  • pancreatic PP cell CL0002275
    CSI 7.75
    rCSI 30.84%
    PRS 39.06
  • respiratory hillock cell CL4030023
    CSI 7.01
    rCSI 12.49%
    PRS 38.1
  • alveolar adventitial fibroblast CL4028006
    CSI 6.71
    rCSI 10.59%
    PRS 23.44
  • retinal ganglion cell CL0000740
    CSI 6.4
    rCSI 14.15%
    PRS 16.66
  • peripheral nervous system neuron CL2000032
    CSI 6.15
    rCSI 8.37%
    PRS 20.42
  • mammary gland epithelial cell CL0002327
    CSI 5.99
    rCSI 21.01%
    PRS 39.6
  • kidney epithelial cell CL0002518
    CSI 5.9
    rCSI 11.27%
    PRS 48.07
  • plasmacytoid dendritic cell, human CL0001058
    CSI 5.67
    rCSI 3.96%
    PRS 25
  • stem cell CL0000034
    CSI 5.52
    rCSI 5.32%
    PRS 17.09
  • colon epithelial cell CL0011108
    CSI 5.28
    rCSI 5.54%
    PRS 21.78
  • luminal cell of prostate epithelium CL0002340
    CSI 5.1
    rCSI 27.44%
    PRS 39.93
  • mature alpha-beta T cell CL0000791
    CSI 5.08
    rCSI 18.4%
    PRS 39.83
  • kidney connecting tubule epithelial cell CL1000768
    CSI 4.39
    rCSI 11.14%
    PRS 17.73
  • squamous epithelial cell CL0000076
    CSI 4.35
    rCSI 10.32%
    PRS 28.75
  • colon goblet cell CL0009039
    CSI 4.08
    rCSI 9.69%
    PRS 34.39
  • lung macrophage CL1001603
    CSI 4.05
    rCSI 9.05%
    PRS 27.47
  • luminal epithelial cell of mammary gland CL0002326
    CSI 3.65
    rCSI 6.62%
    PRS 35.42
  • lung neuroendocrine cell CL1000223
    CSI 3.6
    rCSI 5.32%
    PRS 26.62
  • intestinal epithelial cell CL0002563
    CSI 3.46
    rCSI 3.61%
    PRS 24.29
  • ON-bipolar cell CL0000749
    CSI 3.39
    rCSI 5.04%
    PRS 27.37
  • double negative thymocyte CL0002489
    CSI 3.28
    rCSI 2.28%
    PRS 28.26
  • perivascular cell CL4033054
    CSI 3.18
    rCSI 4.35%
    PRS 26.38
  • syncytiotrophoblast cell CL0000525
    CSI 3.17
    rCSI 9.14%
    PRS 41.65
  • elicited macrophage CL0000861
    CSI 3.03
    rCSI 2.78%
    PRS 27.69
  • mononuclear phagocyte CL0000113
    CSI 2.98
    rCSI 6.57%
    PRS 26.85
  • effector memory CD4-positive, alpha-beta T cell CL0000905
    CSI 2.96
    rCSI 4.03%
    PRS 52.04
  • megakaryocyte-erythroid progenitor cell CL0000050
    CSI 2.96
    rCSI 2.67%
    PRS 21.25
  • astrocyte of the cerebral cortex CL0002605
    CSI 2.94
    rCSI 6.58%
    PRS 14.55
  • IgA plasma cell CL0000987
    CSI 2.93
    rCSI 3%
    PRS 41.76
  • respiratory suprabasal cell CL4033048
    CSI 2.92
    rCSI 3.74%
    PRS 26.99
  • lung pericyte CL0009089
    CSI 2.91
    rCSI 7.68%
    PRS 27.92
  • unswitched memory B cell CL0000970
    CSI 2.9
    rCSI 2.44%
    PRS 36.98
  • pancreatic stellate cell CL0002410
    CSI 2.82
    rCSI 16.41%
    PRS 34.23
  • bronchial goblet cell CL1000312
    CSI 2.7
    rCSI 10.78%
    PRS 46.89
  • bronchus fibroblast of lung CL2000093
    CSI 2.66
    rCSI 2.16%
    PRS 24.48
  • choroid plexus epithelial cell CL0000706
    CSI 2.65
    rCSI 4.34%
    PRS 17.91
  • pancreatic D cell CL0000173
    CSI 2.64
    rCSI 2.6%
    PRS 25.09
  • lung ciliated cell CL1000271
    CSI 2.63
    rCSI 3.04%
    PRS 17.26
  • nasal mucosa goblet cell CL0002480
    CSI 2.55
    rCSI 2.96%
    PRS 33.43
  • CD4-positive, CD25-positive, alpha-beta regulatory T cell CL0000792
    CSI 2.45
    rCSI 2.4%
    PRS 36.18
  • hematopoietic stem cell CL0000037
    CSI 2.4
    rCSI 1.59%
    PRS 27.92
  • epithelial cell of lung CL0000082
    CSI 2.39
    rCSI 1.98%
    PRS 22.19
  • mesodermal cell CL0000222
    CSI 2.37
    rCSI 2.84%
    PRS 22.74
  • myofibroblast cell CL0000186
    CSI 2.37
    rCSI 3.28%
    PRS 31.81
  • dendritic cell, human CL0001056
    CSI 2.34
    rCSI 3.59%
    PRS 28.12
  • early lymphoid progenitor CL0000936
    CSI 2.31
    rCSI 2.03%
    PRS 27.02
  • enteroendocrine cell CL0000164
    CSI 2.28
    rCSI 3.11%
    PRS 25.95
  • goblet cell CL0000160
    CSI 2.27
    rCSI 2.14%
    PRS 24.49
  • chandelier pvalb GABAergic cortical interneuron CL4023036
    CSI 2.25
    rCSI 7.04%
    PRS 15.96
  • naive T cell CL0000898
    CSI 2.24
    rCSI 1.56%
    PRS 32.94
  • enteric smooth muscle cell CL0002504
    CSI 2.2
    rCSI 3.13%
    PRS 26.14
  • skin fibroblast CL0002620
    CSI 2.2
    rCSI 1.89%
    PRS 35.12
  • immature B cell CL0000816
    CSI 2.17
    rCSI 1.61%
    PRS 34.25
  • granulocyte monocyte progenitor cell CL0000557
    CSI 2.15
    rCSI 1.87%
    PRS 26.33
  • effector CD8-positive, alpha-beta T cell CL0001050
    CSI 2.15
    rCSI 1.63%
    PRS 31
  • multi-ciliated epithelial cell CL0005012
    CSI 2.12
    rCSI 2.12%
    PRS 19.99
  • precursor B cell CL0000817
    CSI 2.09
    rCSI 1.83%
    PRS 30.91
  • ciliated cell CL0000064
    CSI 2.09
    rCSI 3.38%
    PRS 23.46
  • Kupffer cell CL0000091
    CSI 2.08
    rCSI 4.76%
    PRS 22.81
  • alveolar type 1 fibroblast cell CL4028004
    CSI 2.07
    rCSI 2.27%
    PRS 26.18
  • interneuron CL0000099
    CSI 2.07
    rCSI 4.16%
    PRS 17.23
  • common lymphoid progenitor CL0000051
    CSI 2.04
    rCSI 2.73%
    PRS 43.31
  • conjunctival epithelial cell CL1000432
    CSI 2.02
    rCSI 3.08%
    PRS 23.54
  • effector memory CD8-positive, alpha-beta T cell, terminally differentiated CL0001062
    CSI 2.01
    rCSI 10.11%
    PRS 30.87
  • acinar cell CL0000622
    CSI 2
    rCSI 2.94%
    PRS 30.55
  • OFF-bipolar cell CL0000750
    CSI 2
    rCSI 2.73%
    PRS 35.18
  • neural crest cell CL0011012
    CSI 1.95
    rCSI 1.54%
    PRS 16.04
  • secretory cell CL0000151
    CSI 1.94
    rCSI 2.02%
    PRS 23.93
  • differentiation-committed oligodendrocyte precursor CL4023059
    CSI 1.94
    rCSI 3.52%
    PRS 19.94
  • interstitial cell of Cajal CL0002088
    CSI 1.93
    rCSI 2.45%
    PRS 26.97
  • activated type II NK T cell CL0000931
    CSI 1.87
    rCSI 2.11%
    PRS 36.96
  • epithelial cell of lower respiratory tract CL0002632
    CSI 1.87
    rCSI 1.45%
    PRS 22.55
  • epithelial cell CL0000066
    CSI 1.87
    rCSI 2.87%
    PRS 31.03
  • CD4-positive, alpha-beta cytotoxic T cell CL0000934
    CSI 1.86
    rCSI 2.56%
    PRS 44.18
  • pulmonary artery endothelial cell CL1001568
    CSI 1.85
    rCSI 2.51%
    PRS 34.97
  • VIP GABAergic cortical interneuron CL4023016
    CSI 1.83
    rCSI 2.19%
    PRS 13.75
  • enterocyte CL0000584
    CSI 1.83
    rCSI 2.96%
    PRS 34.71
  • M cell of gut CL0000682
    CSI 1.83
    rCSI 1.94%
    PRS 39.01
  • mucus secreting cell CL0000319
    CSI 1.82
    rCSI 2.89%
    PRS 29.94
  • neuroblast (sensu Nematoda and Protostomia) CL0000338
    CSI 1.8
    rCSI 2.07%
    PRS 20.23
  • pulmonary ionocyte CL0017000
    CSI 1.8
    rCSI 2.19%
    PRS 29.19
  • ciliated epithelial cell CL0000067
    CSI 1.79
    rCSI 1.57%
    PRS 16.99
  • erythrocyte CL0000232
    CSI 1.77
    rCSI 4.01%
    PRS 30.53
  • vascular leptomeningeal cell CL4023051
    CSI 1.73
    rCSI 3.03%
    PRS 17.85
  • intestinal tuft cell CL0019032
    CSI 1.73
    rCSI 2.64%
    PRS 26.64
  • mesenchymal stem cell CL0000134
    CSI 0.1
    rCSI 0.7%
    PRS 40.3%
  • stromal cell of ovary CL0002132
    CSI 0.1
    rCSI 0.3%
    PRS 37.8%
  • L6b glutamatergic cortical neuron CL4023038
    CSI 0.1
    rCSI 0.4%
    PRS 14.8%
  • respiratory goblet cell CL0002370
    CSI 0.2
    rCSI 2.6%
    PRS 43.4%
  • acinar cell of salivary gland CL0002623
    CSI 0.3
    rCSI 6.9%
    PRS 42.9%
  • basal cell of epithelium of trachea CL1000348
    CSI 0.4
    rCSI 2.6%
    PRS 57.9%
  • L5 extratelencephalic projecting glutamatergic cortical neuron CL4023041
    CSI 0.4
    rCSI 1.5%
    PRS 13.1%
  • tracheobronchial serous cell CL0019001
    CSI 0.4
    rCSI 1.8%
    PRS 41.3%
  • large pre-B-II cell CL0000957
    CSI 0.5
    rCSI 1.4%
    PRS 38.4%
  • enteroendocrine cell of colon CL0009042
    CSI 0.5
    rCSI 2.3%
    PRS 53.9%
  • near-projecting glutamatergic cortical neuron CL4023012
    CSI 0.5
    rCSI 2.0%
    PRS 14.4%
  • podocyte CL0000653
    CSI 0.6
    rCSI 2.5%
    PRS 22.8%
  • primitive red blood cell CL0002355
    CSI 0.7
    rCSI 3.6%
    PRS 38.8%
  • retinal bipolar neuron CL0000748
    CSI 0.7
    rCSI 1.3%
    PRS 16.9%
  • L2/3-6 intratelencephalic projecting glutamatergic neuron CL4023040
    CSI 0.7
    rCSI 1.7%
    PRS 13.7%
  • erythroid progenitor cell CL0000038
    CSI 0.7
    rCSI 3.9%
    PRS 34.2%
  • microcirculation associated smooth muscle cell CL0008035
    CSI 0.7
    rCSI 2.0%
    PRS 26.3%
  • megakaryocyte CL0000556
    CSI 0.7
    rCSI 3.1%
    PRS 39.6%
  • type EC enteroendocrine cell CL0000577
    CSI 0.8
    rCSI 2.7%
    PRS 37.4%
  • corticothalamic-projecting glutamatergic cortical neuron CL4023013
    CSI 0.8
    rCSI 4.5%
    PRS 14.6%
  • respiratory basal cell CL0002633
    CSI 0.8
    rCSI 0.8%
    PRS 27.6%
  • transit amplifying cell of small intestine CL0009012
    CSI 0.8
    rCSI 3.4%
    PRS 42.0%
  • myelocyte CL0002193
    CSI 0.8
    rCSI 5.2%
    PRS 62.6%
  • deuterosomal cell CL4033044
    CSI 0.8
    rCSI 2.7%
    PRS 36.2%
  • hepatocyte CL0000182
    CSI 0.8
    rCSI 1.5%
    PRS 21.6%
  • IgG plasma cell CL0000985
    CSI 0.9
    rCSI 1.1%
    PRS 40.1%
  • lamp5 GABAergic cortical interneuron CL4023011
    CSI 0.9
    rCSI 1.5%
    PRS 13.9%
  • sncg GABAergic cortical interneuron CL4023015
    CSI 1.0
    rCSI 1.6%
    PRS 15.2%
  • ciliated columnar cell of tracheobronchial tree CL0002145
    CSI 1.0
    rCSI 2.3%
    PRS 23.9%
  • type B pancreatic cell CL0000169
    CSI 1.0
    rCSI 2.3%
    PRS 21.6%
  • caudal ganglionic eminence derived cortical interneuron CL4023064
    CSI 1.0
    rCSI 1.8%
    PRS 13.7%
  • type L enteroendocrine cell CL0002279
    CSI 1.1
    rCSI 2.0%
    PRS 44.1%
  • alternatively activated macrophage CL0000890
    CSI 1.1
    rCSI 1.3%
    PRS 35.5%
  • tracheal goblet cell CL1000329
    CSI 1.1
    rCSI 2.3%
    PRS 43.8%
  • promyelocyte CL0000836
    CSI 1.1
    rCSI 1.6%
    PRS 32.5%
  • paneth cell CL0000510
    CSI 1.1
    rCSI 1.6%
    PRS 36.3%
  • sst GABAergic cortical interneuron CL4023017
    CSI 1.1
    rCSI 1.4%
    PRS 14.5%
  • Bergmann glial cell CL0000644
    CSI 1.2
    rCSI 1.6%
    PRS 23.1%
  • Hofbauer cell CL3000001
    CSI 1.2
    rCSI 2.2%
    PRS 29.7%
  • epithelial cell of proximal tubule CL0002306
    CSI 1.2
    rCSI 2.9%
    PRS 22.7%
  • keratinocyte CL0000312
    CSI 1.2
    rCSI 1.0%
    PRS 27.7%
  • kidney loop of Henle thin ascending limb epithelial cell CL1001107
    CSI 1.2
    rCSI 3.1%
    PRS 21.6%
  • promonocyte CL0000559
    CSI 1.3
    rCSI 2.2%
    PRS 31.6%
  • Langerhans cell CL0000453
    CSI 1.3
    rCSI 2.0%
    PRS 40.3%
  • pancreatic acinar cell CL0002064
    CSI 1.3
    rCSI 1.7%
    PRS 25.6%
  • group 3 innate lymphoid cell CL0001071
    CSI 1.3
    rCSI 1.0%
    PRS 25.1%
  • small pre-B-II cell CL0000954
    CSI 1.3
    rCSI 1.3%
    PRS 46.0%
  • pvalb GABAergic cortical interneuron CL4023018
    CSI 1.3
    rCSI 1.6%
    PRS 13.0%
  • glandular epithelial cell CL0000150
    CSI 1.3
    rCSI 3.5%
    PRS 44.4%
  • dopaminergic neuron CL0000700
    CSI 1.3
    rCSI 7.5%
    PRS 13.8%
  • retinal pigment epithelial cell CL0002586
    CSI 1.3
    rCSI 2.7%
    PRS 24.4%
  • common myeloid progenitor CL0000049
    CSI 1.4
    rCSI 1.1%
    PRS 23.6%
  • rod bipolar cell CL0000751
    CSI 1.4
    rCSI 2.4%
    PRS 19.3%
  • foveolar cell of stomach CL0002179
    CSI 1.4
    rCSI 2.9%
    PRS 36.6%
  • colonocyte CL1000347
    CSI 1.4
    rCSI 2.0%
    PRS 31.2%
  • neuroblast (sensu Vertebrata) CL0000031
    CSI 1.4
    rCSI 1.8%
    PRS 22.4%
  • club cell CL0000158
    CSI 1.4
    rCSI 2.1%
    PRS 26.4%
  • fibroblast of lung CL0002553
    CSI 1.4
    rCSI 1.3%
    PRS 23.4%
  • radial glial cell CL0000681
    CSI 1.5
    rCSI 2.0%
    PRS 23.6%
  • ionocyte CL0005006
    CSI 1.5
    rCSI 1.6%
    PRS 21.5%
  • BEST4+ enteroycte CL4030026
    CSI 1.5
    rCSI 1.8%
    PRS 24.9%
  • CD14-low, CD16-positive monocyte CL0002396
    CSI 1.5
    rCSI 1.1%
    PRS 21.9%
  • basal cell CL0000646
    CSI 1.5
    rCSI 2.0%
    PRS 25.4%
  • P/D1 enteroendocrine cell CL0002268
    CSI 1.5
    rCSI 8.3%
    PRS 50.7%
  • retinal cone cell CL0000573
    CSI 1.5
    rCSI 2.5%
    PRS 17.8%
  • intestine goblet cell CL0019031
    CSI 1.5
    rCSI 1.4%
    PRS 23.6%
  • pro-B cell CL0000826
    CSI 1.6
    rCSI 1.3%
    PRS 23.8%
  • glioblast CL0000030
    CSI 1.6
    rCSI 2.5%
    PRS 19.9%
  • renal alpha-intercalated cell CL0005011
    CSI 1.6
    rCSI 2.1%
    PRS 30.0%
  • T follicular helper cell CL0002038
    CSI 1.6
    rCSI 1.2%
    PRS 36.6%
  • central memory CD8-positive, alpha-beta T cell CL0000907
    CSI 1.6
    rCSI 1.1%
    PRS 29.0%
  • mature B cell CL0000785
    CSI 1.6
    rCSI 1.4%
    PRS 29.6%
  • pancreatic epsilon cell CL0005019
    CSI 1.6
    rCSI 7.5%
    PRS 48.7%
  • mucous neck cell CL0000651
    CSI 1.6
    rCSI 2.3%
    PRS 36.4%
  • amacrine cell CL0000561
    CSI 1.6
    rCSI 4.7%
    PRS 18.1%
  • myeloid leukocyte CL0000766
    CSI 1.6
    rCSI 1.5%
    PRS 24.4%
  • mesenchymal cell CL0008019
    CSI 1.7
    rCSI 4.3%
    PRS 23.2%
  • Mueller cell CL0000636
    CSI 1.7
    rCSI 3.9%
    PRS 20.0%
  • myoepithelial cell CL0000185
    CSI 1.7
    rCSI 4.4%
    PRS 28.8%
  • common dendritic progenitor CL0001029
    CSI 1.7
    rCSI 2.2%
    PRS 30.4%
  • basal-myoepithelial cell of mammary gland CL0002324
    CSI 1.7
    rCSI 3.3%
    PRS 47.6%
  • intestinal tuft cell CL0019032
    CSI 1.7
    rCSI 2.6%
    PRS 26.6%
  • vascular leptomeningeal cell CL4023051
    CSI 1.7
    rCSI 3.0%
    PRS 17.9%
  • erythrocyte CL0000232
    CSI 1.8
    rCSI 4.0%
    PRS 30.5%
  • ciliated epithelial cell CL0000067
    CSI 1.8
    rCSI 1.6%
    PRS 17.0%
  • pulmonary ionocyte CL0017000
    CSI 1.8
    rCSI 2.2%
    PRS 29.2%
  • neuroblast (sensu Nematoda and Protostomia) CL0000338
    CSI 1.8
    rCSI 2.1%
    PRS 20.2%
  • mucus secreting cell CL0000319
    CSI 1.8
    rCSI 2.9%
    PRS 29.9%
  • M cell of gut CL0000682
    CSI 1.8
    rCSI 1.9%
    PRS 39.0%
  • enterocyte CL0000584
    CSI 1.8
    rCSI 3.0%
    PRS 34.7%
  • VIP GABAergic cortical interneuron CL4023016
    CSI 1.8
    rCSI 2.2%
    PRS 13.8%
  • pulmonary artery endothelial cell CL1001568
    CSI 1.9
    rCSI 2.5%
    PRS 35.0%
  • CD4-positive, alpha-beta cytotoxic T cell CL0000934
    CSI 1.9
    rCSI 2.6%
    PRS 44.2%
  • epithelial cell CL0000066
    CSI 1.9
    rCSI 2.9%
    PRS 31.0%
  • epithelial cell of lower respiratory tract CL0002632
    CSI 1.9
    rCSI 1.5%
    PRS 22.6%
  • activated type II NK T cell CL0000931
    CSI 1.9
    rCSI 2.1%
    PRS 37.0%
  • interstitial cell of Cajal CL0002088
    CSI 1.9
    rCSI 2.5%
    PRS 27.0%
  • differentiation-committed oligodendrocyte precursor CL4023059
    CSI 1.9
    rCSI 3.5%
    PRS 19.9%
  • secretory cell CL0000151
    CSI 1.9
    rCSI 2.0%
    PRS 23.9%
  • neural crest cell CL0011012
    CSI 2.0
    rCSI 1.5%
    PRS 16.0%

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 [GPAA1](/details-gene/8733) (Glycosylphosphatidylinositol Anchor Attachment 1) encodes an essential catalytic subunit of the GPI transamidase (GPIT) complex, which is responsible for the attachment of glycosylphosphatidylinositol (GPI) anchors to nascent proteins in the endoplasmic reticulum. This post-translational modification is critical for tethering a wide array of proteins to the cell surface, where they play roles in cell adhesion, signaling, and enzymatic activity. **Overall**, expression data indicate that [GPAA1](/details-gene/8733) is particularly significant in a diverse range of metabolically active and secretory cell types, including epithelial, endocrine, and trophoblastic cells. Its fundamental role is underscored by clinical findings where mutations in [GPAA1](/details-gene/8733) are associated with severe inherited GPI deficiency disorders characterized by developmental delay, epilepsy, and cerebellar atrophy ([Link](https://doi.org/10.1016/j.ajhg.2017.09.020)). ## Cellular Roles and Expression Landscape The expression profile of [GPAA1](/details-gene/8733) highlights its importance in cells with high protein processing and secretory demands. The gene shows its highest significance in [fallopian tube secretory epithelial cell](/details-cell/CL4030006) (CSI: 39.51), suggesting a critical role for GPI-anchored proteins in the reproductive tract environment. Beyond this lead cell type, [GPAA1](/details-gene/8733) is highly significant across several functional cellular categories: * **Specialized Secretory Epithelia:** High significance is noted in [pancreatic ductal cell](/details-cell/CL0002079) (CSI: 16.89), [lung secretory cell](/details-cell/CL1000272) (CSI: 12.62), and [duct epithelial cell](/details-cell/CL0000068) (CSI: 11.83), consistent with the need to anchor surface enzymes and receptors in these tissues. * **Trophoblastic and Placental Cells:** Strong signals in [extravillous trophoblast](/details-cell/CL0008036) (CSI: 15.03) and [placental villous trophoblast](/details-cell/CL2000060) (CSI: 11.24) point to a key function in placental development and maternal-fetal interface maintenance. * **Endocrine and Neural Cells:** Significant expression in [pancreatic A cell](/details-cell/CL0000171) (CSI: 14.55), [ependymal cell](/details-cell/CL0000065) (CSI: 14.69), and [retina horizontal cell](/details-cell/CL0000745) (CSI: 11.12) suggests a role in processing GPI-anchored proteins involved in hormonal regulation and neural architecture. * **Muscle and Immune Cells:** The gene also shows relevance in [vascular associated smooth muscle cell](/details-cell/CL0000359) (CSI: 14.48), [cardiac muscle cell](/details-cell/CL0000746) (CSI: 11.88), and various immune cells like [intermediate monocyte](/details-cell/CL0002393) (CSI: 11.60) and [plasmablast](/details-cell/CL0000980) (CSI: 8.85). This broad but distinct expression pattern underscores the ubiquitous yet vital nature of GPI-anchor synthesis for the function of numerous specialized cell types. ## Pathways and Molecular Function The functional annotations for [GPAA1](/details-gene/8733) are highly consistent with its established biochemical role. As a core component of the [Gpi-anchor transamidase complex](/details-term/GO:0042765), its primary function is [Gpi-anchor transamidase activity](/details-term/GO:0003923). This activity facilitates the biological process of '[Attachment of gpi anchor to protein](/details-term/GO:0016255),' a critical step in protein maturation. This process occurs within the '[Endoplasmic reticulum membrane](/details-term/GO:0005789),' where [GPAA1](/details-gene/8733) forms a complex with other essential proteins like PIG-S, PIG-T, and GPI8 to ensure proper protein modification ([Link](https://doi.org/10.1093/emboj/20.15.4088)). Reactome pathways further specify its involvement in '[Post-translational modification: synthesis of gpi-anchored proteins](/pathway/R-HSA-163125)' and, more broadly, the '[Metabolism of proteins](/pathway/R-HSA-392499)'. The gene's protein product has also been annotated with [Tubulin binding](/details-term/GO:0015631) and localization to the [Centrosome](/details-term/GO:0005813), which may suggest additional, less characterized roles in cellular organization or trafficking. ## Research Directions The association of [GPAA1](/details-gene/8733) mutations with severe neurological and developmental disorders provides a clear basis for future investigation into the cell-type-specific consequences of its dysfunction. ### Testable Hypotheses 1. **Neuropathology Mechanism:** The severe neurological phenotypes (epilepsy, cerebellar atrophy) observed in patients with [GPAA1](/details-gene/8733) mutations ([Link](https://doi.org/10.1016/j.ajhg.2017.09.020)) are caused by the failed cell-surface anchoring of specific GPI-linked neuronal adhesion molecules (e.g., members of the contactin family) in cell types such as [ependymal cell](/details-cell/CL0000065), leading to defects in neural migration, synapse formation, and maintenance of brain architecture. 2. **Reproductive Function:** The exceptionally high significance of [GPAA1](/details-gene/8733) in [fallopian tube secretory epithelial cell](/details-cell/CL4030006) suggests that its function is critical for female fertility. Hypofunction of [GPAA1](/details-gene/8733) in these cells may impair the secretion or surface presentation of GPI-anchored proteins necessary for gamete interaction, fertilization, or early embryonic development, potentially representing an uncharacterized cause of infertility. 3. **Endocrine Disruption:** Given its notable expression in [pancreatic A cell](/details-cell/CL0000171), partial loss-of-function variants in [GPAA1](/details-gene/8733) could contribute to metabolic dysregulation by altering the surface expression of key receptors or channels involved in glucagon secretion and glucose homeostasis. ### Proposed Experiment To test hypothesis #1, a compelling approach would be to develop a conditional knockout mouse model where *Gpaa1* is specifically deleted in neural stem and progenitor cells during development (e.g., using a Nestin-Cre driver). The resulting phenotype could be characterized using magnetic resonance imaging (MRI) to assess cerebellar atrophy and histology to examine neuronal organization. Furthermore, surface proteomics (e.g., cell-surface biotinylation followed by mass spectrometry) on cultured primary neurons or brain organoids derived from these mice could be employed to identify the specific repertoire of GPI-anchored proteins that fail to reach the cell membrane, thereby linking molecular defects to the observed neuropathology. ### Therapeutic Potential As [GPAA1](/details-gene/8733) is an essential enzyme and its associated diseases are caused by loss-of-function, therapeutic strategies must focus on **restoration or activation** of its function rather than inhibition. For the severe monogenic disorders it causes, gene therapy represents the most promising avenue. The delivery of a functional copy of the [GPAA1](/details-gene/8733) cDNA via an AAV vector, particularly one capable of crossing the blood-brain barrier, could potentially rescue the neurological defects if administered early enough. Small molecule chaperones or potentiators that stabilize the mutant GPAA1 protein or enhance the activity of the GPIT complex could also be explored, although this would depend on the specific nature of the patient's mutation.

Genular Protein ID: 3563959304

Symbol: GPAA1_HUMAN

Name: Glycosylphosphatidylinositol anchor attachment 1 protein

UniProtKB Accession Codes:

Database IDs:

Citations:

PubMed ID: 9468317

Title: Molecular cloning of human homolog of yeast GAA1 which is required for attachment of glycosylphosphatidylinositols to proteins.

PubMed ID: 9468317

DOI: 10.1016/s0014-5793(97)01576-7

PubMed ID: 10393431

Title: Human and mouse GPAA1 (glycosylphosphatidylinositol anchor attachment 1) genes: genomic structures, chromosome loci and the presence of a minor class intron.

PubMed ID: 10393431

DOI: 10.1159/000015258

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: 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: 11483512

Title: PIG-S and PIG-T, essential for GPI anchor attachment to proteins, form a complex with GAA1 and GPI8.

PubMed ID: 11483512

DOI: 10.1093/emboj/20.15.4088

PubMed ID: 21269460

Title: Initial characterization of the human central proteome.

PubMed ID: 21269460

DOI: 10.1186/1752-0509-5-17

PubMed ID: 29100095

Title: Mutations in GPAA1, encoding a GPI transamidase complex protein, cause developmental delay, epilepsy, cerebellar atrophy, and osteopenia.

PubMed ID: 29100095

DOI: 10.1016/j.ajhg.2017.09.020

PubMed ID: 34576938

Title: Functional analysis of the GPI transamidase complex by screening for amino acid mutations in each subunit.

PubMed ID: 34576938

DOI: 10.3390/molecules26185462

Sequence Information:

  • Length: 621
  • Mass: 67623
  • Checksum: A70AC8758A919A98
  • Sequence:
  • MGLLSDPVRR RALARLVLRL NAPLCVLSYV AGIAWFLALV FPPLTQRTYM SENAMGSTMV 
    EEQFAGGDRA RAFARDFAAH RKKSGALPVA WLERTMRSVG LEVYTQSFSR KLPFPDETHE 
    RYMVSGTNVY GILRAPRAAS TESLVLTVPC GSDSTNSQAV GLLLALAAHF RGQIYWAKDI 
    VFLVTEHDLL GTEAWLEAYH DVNVTGMQSS PLQGRAGAIQ AAVALELSSD VVTSLDVAVE 
    GLNGQLPNLD LLNLFQTFCQ KGGLLCTLQG KLQPEDWTSL DGPLQGLQTL LLMVLRQASG 
    RPHGSHGLFL RYRVEALTLR GINSFRQYKY DLVAVGKALE GMFRKLNHLL ERLHQSFFLY 
    LLPGLSRFVS IGLYMPAVGF LLLVLGLKAL ELWMQLHEAG MGLEEPGGAP GPSVPLPPSQ 
    GVGLASLVAP LLISQAMGLA LYVLPVLGQH VATQHFPVAE AEAVVLTLLA IYAAGLALPH 
    NTHRVVSTQA PDRGWMALKL VALIYLALQL GCIALTNFSL GFLLATTMVP TAALAKPHGP 
    RTLYAALLVL TSPAATLLGS LFLWRELQEA PLSLAEGWQL FLAALAQGVL EHHTYGALLF 
    PLLSLGLYPC WLLFWNVLFW K