Details for: CHN1

Gene ID: 1123

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: CHN1

Ensembl ID: ENSG00000128656

Description: chimerin 1

Cell Significance Landscape

Associated with

Significant Cells

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

  • sst GABAergic cortical interneuron CL4023017
    CSI 29.98
    rCSI 38.65%
    PRS 60.08
  • L4 intratelencephalic projecting glutamatergic neuron CL4030063
    CSI 29.36
    rCSI 70.23%
    PRS 63.98
  • L2/3 intratelencephalic projecting glutamatergic neuron CL4030059
    CSI 28.83
    rCSI 62.53%
    PRS 64.7
  • L2/3-6 intratelencephalic projecting glutamatergic neuron CL4023040
    CSI 23.04
    rCSI 56%
    PRS 56.9
  • OFF-bipolar cell CL0000750
    CSI 23.01
    rCSI 31.46%
    PRS 80.04
  • L5/6 near-projecting glutamatergic neuron CL4030067
    CSI 22.33
    rCSI 73.38%
    PRS 63.39
  • neuron CL0000540
    CSI 21.31
    rCSI 56.74%
    PRS 65
  • L6b glutamatergic cortical neuron CL4023038
    CSI 19.84
    rCSI 62.02%
    PRS 60.56
  • L5 extratelencephalic projecting glutamatergic cortical neuron CL4023041
    CSI 16.99
    rCSI 61.14%
    PRS 56.82
  • retinal bipolar neuron CL0000748
    CSI 16.8
    rCSI 31.46%
    PRS 65.19
  • near-projecting glutamatergic cortical neuron CL4023012
    CSI 16.21
    rCSI 61.25%
    PRS 59.34
  • glutamatergic neuron CL0000679
    CSI 15.77
    rCSI 32.41%
    PRS 64.75
  • retinal pigment epithelial cell CL0002586
    CSI 15.15
    rCSI 30.08%
    PRS 73.24
  • pvalb GABAergic cortical interneuron CL4023018
    CSI 13.44
    rCSI 16.72%
    PRS 56.78
  • cardiac neuron CL0010022
    CSI 12.29
    rCSI 39.34%
    PRS 74.21
  • cerebellar granule cell CL0001031
    CSI 11.64
    rCSI 17.11%
    PRS 69.96
  • blood vessel endothelial cell CL0000071
    CSI 11.52
    rCSI 23.91%
    PRS 73.91
  • GABAergic amacrine cell CL4030027
    CSI 11.15
    rCSI 38.18%
    PRS 63.71
  • corticothalamic-projecting glutamatergic cortical neuron CL4023013
    CSI 10.35
    rCSI 60.94%
    PRS 59.67
  • cardiac muscle cell CL0000746
    CSI 10.16
    rCSI 14.58%
    PRS 66.88
  • bronchus fibroblast of lung CL2000093
    CSI 9.01
    rCSI 7.32%
    PRS 76.62
  • cerebral cortex neuron CL0010012
    CSI 8.99
    rCSI 36.62%
    PRS 69.45
  • H2 horizontal cell CL0004218
    CSI 8.83
    rCSI 43.88%
    PRS 72.51
  • glioblast CL0000030
    CSI 8.76
    rCSI 13.98%
    PRS 68.8
  • lung pericyte CL0009089
    CSI 8.1
    rCSI 21.37%
    PRS 84.29
  • cardiac endothelial cell CL0010008
    CSI 8.04
    rCSI 32.43%
    PRS 76.62
  • interneuron CL0000099
    CSI 7.09
    rCSI 14.24%
    PRS 66.91
  • inhibitory interneuron CL0000498
    CSI 6.98
    rCSI 16.12%
    PRS 65.1
  • astrocyte of the cerebral cortex CL0002605
    CSI 6.97
    rCSI 15.62%
    PRS 59.57
  • caudal ganglionic eminence derived cortical interneuron CL4023064
    CSI 6.95
    rCSI 12.28%
    PRS 58.06
  • Mueller cell CL0000636
    CSI 6.77
    rCSI 15.46%
    PRS 68.51
  • ependymal cell CL0000065
    CSI 6.56
    rCSI 13.31%
    PRS 55.39
  • radial glial cell CL0000681
    CSI 6.36
    rCSI 8.83%
    PRS 75.91
  • neural cell CL0002319
    CSI 6.17
    rCSI 23.3%
    PRS 60.06
  • peripheral nervous system neuron CL2000032
    CSI 6.05
    rCSI 8.24%
    PRS 68.58
  • sncg GABAergic cortical interneuron CL4023015
    CSI 5.89
    rCSI 9.48%
    PRS 60.56
  • medium spiny neuron CL1001474
    CSI 5.84
    rCSI 50.28%
    PRS 64.76
  • neural crest cell CL0011012
    CSI 5.81
    rCSI 4.6%
    PRS 65.41
  • central nervous system neuron CL2000029
    CSI 5.75
    rCSI 42.27%
    PRS 64.22
  • perivascular cell CL4033054
    CSI 5.74
    rCSI 7.85%
    PRS 81.72
  • retinal rod cell CL0000604
    CSI 5.67
    rCSI 9.99%
    PRS 73.02
  • contractile cell CL0000183
    CSI 5.55
    rCSI 16.38%
    PRS 76.47
  • Schwann cell CL0002573
    CSI 5.43
    rCSI 15.43%
    PRS 73.42
  • vascular leptomeningeal cell CL4023051
    CSI 5.23
    rCSI 9.17%
    PRS 70.51
  • neuroblast (sensu Vertebrata) CL0000031
    CSI 5.22
    rCSI 6.7%
    PRS 73.42
  • diffuse bipolar 2 cell CL4033028
    CSI 5.18
    rCSI 40.11%
    PRS 72.06
  • cerebral cortex endothelial cell CL1001602
    CSI 5.06
    rCSI 8.75%
    PRS 68.37
  • retinal cone cell CL0000573
    CSI 4.99
    rCSI 8.03%
    PRS 66.94
  • chondrocyte CL0000138
    CSI 4.97
    rCSI 7.91%
    PRS 69.96
  • neuroblast (sensu Nematoda and Protostomia) CL0000338
    CSI 4.92
    rCSI 5.68%
    PRS 69.4
  • adipocyte CL0000136
    CSI 4.83
    rCSI 6.2%
    PRS 67.52
  • ON-bipolar cell CL0000749
    CSI 4.82
    rCSI 7.16%
    PRS 77.39
  • endothelial cell of vascular tree CL0002139
    CSI 4.67
    rCSI 25.51%
    PRS 73.97
  • macroglial cell CL0000126
    CSI 4.52
    rCSI 11.63%
    PRS 74.49
  • alveolar type 1 fibroblast cell CL4028004
    CSI 4.47
    rCSI 4.9%
    PRS 79.35
  • ciliated columnar cell of tracheobronchial tree CL0002145
    CSI 4.41
    rCSI 10.05%
    PRS 71.29
  • podocyte CL0000653
    CSI 4.02
    rCSI 17.88%
    PRS 77.57
  • GABAergic neuron CL0000617
    CSI 3.83
    rCSI 12.84%
    PRS 61.11
  • VIP GABAergic cortical interneuron CL4023016
    CSI 3.81
    rCSI 4.55%
    PRS 58.83
  • amacrine cell CL0000561
    CSI 3.76
    rCSI 10.9%
    PRS 66.4
  • diffuse bipolar 3b cell CL4033030
    CSI 3.74
    rCSI 24.83%
    PRS 72.65
  • CD8-positive, CD28-negative, alpha-beta regulatory T cell CL0000920
    CSI 3.69
    rCSI 7.35%
    PRS 89.46
  • neural progenitor cell CL0011020
    CSI 3.64
    rCSI 16.02%
    PRS 65.7
  • mature microglial cell CL0002629
    CSI 3.64
    rCSI 15.13%
    PRS 77.36
  • tracheobronchial smooth muscle cell CL0019019
    CSI 3.61
    rCSI 6.36%
    PRS 82.96
  • mature astrocyte CL0002627
    CSI 3.57
    rCSI 15.19%
    PRS 69.78
  • retinal blood vessel endothelial cell CL0002585
    CSI 3.54
    rCSI 5.65%
    PRS 80.97
  • pancreatic D cell CL0000173
    CSI 3.41
    rCSI 3.36%
    PRS 80.12
  • differentiation-committed oligodendrocyte precursor CL4023059
    CSI 3.31
    rCSI 6.01%
    PRS 68.5
  • ciliated epithelial cell CL0000067
    CSI 3.26
    rCSI 2.87%
    PRS 65.99
  • midbrain dopaminergic neuron CL2000097
    CSI 3.19
    rCSI 20.42%
    PRS 74.27
  • endocardial cell CL0002350
    CSI 3.11
    rCSI 14.89%
    PRS 73.92
  • choroid plexus epithelial cell CL0000706
    CSI 3.1
    rCSI 5.08%
    PRS 66.51
  • lamp5 GABAergic cortical interneuron CL4023011
    CSI 3.04
    rCSI 5.1%
    PRS 58.87
  • regular ventricular cardiac myocyte CL0002131
    CSI 3.03
    rCSI 18.92%
    PRS 68.76
  • pancreatic A cell CL0000171
    CSI 2.68
    rCSI 2.81%
    PRS 80.66
  • retina horizontal cell CL0000745
    CSI 2.66
    rCSI 4.06%
    PRS 73.88
  • T-helper 17 cell CL0000899
    CSI 2.62
    rCSI 2.08%
    PRS 93.37
  • lung neuroendocrine cell CL1000223
    CSI 2.61
    rCSI 3.86%
    PRS 81.63
  • dopaminergic neuron CL0000700
    CSI 2.61
    rCSI 14.74%
    PRS 62.89
  • lung secretory cell CL1000272
    CSI 2.6
    rCSI 6.45%
    PRS 76.65
  • glial cell CL0000125
    CSI 2.6
    rCSI 9.91%
    PRS 67.94
  • direct pathway medium spiny neuron CL4023026
    CSI 2.59
    rCSI 62.1%
    PRS 57.29
  • glycinergic amacrine cell CL4030028
    CSI 2.58
    rCSI 6.73%
    PRS 72.3
  • chandelier pvalb GABAergic cortical interneuron CL4023036
    CSI 2.58
    rCSI 8.07%
    PRS 63.03
  • indirect pathway medium spiny neuron CL4023029
    CSI 2.57
    rCSI 61.89%
    PRS 57.84
  • renal interstitial pericyte CL1001318
    CSI 2.5
    rCSI 6.88%
    PRS 72.22
  • pulmonary artery endothelial cell CL1001568
    CSI 2.43
    rCSI 3.31%
    PRS 86.02
  • epithelial cell of lower respiratory tract CL0002632
    CSI 2.39
    rCSI 1.86%
    PRS 80.82
  • serotonergic neuron CL0000850
    CSI 2.37
    rCSI 10.6%
    PRS 61.33
  • interstitial cell of Cajal CL0002088
    CSI 2.16
    rCSI 2.75%
    PRS 82.29
  • Bergmann glial cell CL0000644
    CSI 2.14
    rCSI 2.93%
    PRS 69.14
  • parietal epithelial cell CL1000452
    CSI 2.11
    rCSI 5.65%
    PRS 68.49
  • microcirculation associated smooth muscle cell CL0008035
    CSI 1.8
    rCSI 5.21%
    PRS 76.85
  • GABAergic interneuron CL0011005
    CSI 1.7
    rCSI 26.81%
    PRS 79.06
  • alveolar adventitial fibroblast CL4028006
    CSI 1.65
    rCSI 2.61%
    PRS 78.89
  • endothelial cell of placenta CL0009092
    CSI 1.55
    rCSI 7.65%
    PRS 85.35
  • retinal ganglion cell CL0000740
    CSI 1.48
    rCSI 3.27%
    PRS 62.79
  • stromal cell CL0000499
    CSI 1.43
    rCSI 4.02%
    PRS 72.27
  • H1 horizontal cell CL0004217
    CSI 1.38
    rCSI 5.47%
    PRS 73.65
  • mesenchymal cell CL0008019
    CSI 0.5
    rCSI 1.3%
    PRS 70.5%
  • cone retinal bipolar cell CL0000752
    CSI 0.5
    rCSI 6.8%
    PRS 79.9%
  • pancreatic PP cell CL0002275
    CSI 0.7
    rCSI 2.7%
    PRS 85.5%
  • S cone cell CL0003050
    CSI 0.7
    rCSI 3.1%
    PRS 72.7%
  • forebrain radial glial cell CL0013000
    CSI 0.7
    rCSI 2.4%
    PRS 79.5%
  • flat midget bipolar cell CL4033033
    CSI 0.8
    rCSI 5.4%
    PRS 68.7%
  • diffuse bipolar 4 cell CL4033031
    CSI 0.8
    rCSI 8.8%
    PRS 66.7%
  • blood vessel smooth muscle cell CL0019018
    CSI 0.8
    rCSI 6.4%
    PRS 70.9%
  • helper T cell CL0000912
    CSI 0.9
    rCSI 1.3%
    PRS 77.3%
  • cardiac blood vessel endothelial cell CL0010006
    CSI 0.9
    rCSI 6.4%
    PRS 70.6%
  • cerebral cortex pyramidal neuron CL4023111
    CSI 1.0
    rCSI 6.2%
    PRS 84.1%
  • starburst amacrine cell CL0004232
    CSI 1.0
    rCSI 8.5%
    PRS 65.9%
  • follicular dendritic cell CL0000442
    CSI 1.0
    rCSI 16.6%
    PRS 87.8%
  • ON parasol ganglion cell CL4033052
    CSI 1.1
    rCSI 15.0%
    PRS 68.0%
  • CD8-positive, alpha-beta memory T cell, CD45RO-positive CL0001203
    CSI 1.1
    rCSI 1.3%
    PRS 58.7%
  • diffuse bipolar 1 cell CL4033027
    CSI 1.1
    rCSI 8.5%
    PRS 68.7%
  • neuroplacodal cell CL0000032
    CSI 1.2
    rCSI 10.8%
    PRS 79.9%
  • invaginating midget bipolar cell CL4033034
    CSI 1.2
    rCSI 6.9%
    PRS 69.7%
  • diffuse bipolar 3a cell CL4033029
    CSI 1.2
    rCSI 8.4%
    PRS 70.6%
  • type B pancreatic cell CL0000169
    CSI 1.3
    rCSI 2.9%
    PRS 76.5%
  • H1 horizontal cell CL0004217
    CSI 1.4
    rCSI 5.5%
    PRS 73.7%
  • stromal cell CL0000499
    CSI 1.4
    rCSI 4.0%
    PRS 72.3%
  • retinal ganglion cell CL0000740
    CSI 1.5
    rCSI 3.3%
    PRS 62.8%
  • endothelial cell of placenta CL0009092
    CSI 1.6
    rCSI 7.7%
    PRS 85.4%
  • alveolar adventitial fibroblast CL4028006
    CSI 1.7
    rCSI 2.6%
    PRS 78.9%
  • GABAergic interneuron CL0011005
    CSI 1.7
    rCSI 26.8%
    PRS 79.1%
  • microcirculation associated smooth muscle cell CL0008035
    CSI 1.8
    rCSI 5.2%
    PRS 76.9%
  • parietal epithelial cell CL1000452
    CSI 2.1
    rCSI 5.7%
    PRS 68.5%
  • Bergmann glial cell CL0000644
    CSI 2.1
    rCSI 2.9%
    PRS 69.1%
  • interstitial cell of Cajal CL0002088
    CSI 2.2
    rCSI 2.8%
    PRS 82.3%
  • serotonergic neuron CL0000850
    CSI 2.4
    rCSI 10.6%
    PRS 61.3%
  • epithelial cell of lower respiratory tract CL0002632
    CSI 2.4
    rCSI 1.9%
    PRS 80.8%
  • pulmonary artery endothelial cell CL1001568
    CSI 2.4
    rCSI 3.3%
    PRS 86.0%
  • renal interstitial pericyte CL1001318
    CSI 2.5
    rCSI 6.9%
    PRS 72.2%
  • indirect pathway medium spiny neuron CL4023029
    CSI 2.6
    rCSI 61.9%
    PRS 57.8%
  • chandelier pvalb GABAergic cortical interneuron CL4023036
    CSI 2.6
    rCSI 8.1%
    PRS 63.0%
  • glycinergic amacrine cell CL4030028
    CSI 2.6
    rCSI 6.7%
    PRS 72.3%
  • direct pathway medium spiny neuron CL4023026
    CSI 2.6
    rCSI 62.1%
    PRS 57.3%
  • glial cell CL0000125
    CSI 2.6
    rCSI 9.9%
    PRS 67.9%
  • lung secretory cell CL1000272
    CSI 2.6
    rCSI 6.5%
    PRS 76.7%
  • dopaminergic neuron CL0000700
    CSI 2.6
    rCSI 14.7%
    PRS 62.9%
  • lung neuroendocrine cell CL1000223
    CSI 2.6
    rCSI 3.9%
    PRS 81.6%
  • T-helper 17 cell CL0000899
    CSI 2.6
    rCSI 2.1%
    PRS 93.4%
  • retina horizontal cell CL0000745
    CSI 2.7
    rCSI 4.1%
    PRS 73.9%
  • pancreatic A cell CL0000171
    CSI 2.7
    rCSI 2.8%
    PRS 80.7%
  • regular ventricular cardiac myocyte CL0002131
    CSI 3.0
    rCSI 18.9%
    PRS 68.8%
  • lamp5 GABAergic cortical interneuron CL4023011
    CSI 3.0
    rCSI 5.1%
    PRS 58.9%
  • choroid plexus epithelial cell CL0000706
    CSI 3.1
    rCSI 5.1%
    PRS 66.5%
  • endocardial cell CL0002350
    CSI 3.1
    rCSI 14.9%
    PRS 73.9%
  • midbrain dopaminergic neuron CL2000097
    CSI 3.2
    rCSI 20.4%
    PRS 74.3%
  • ciliated epithelial cell CL0000067
    CSI 3.3
    rCSI 2.9%
    PRS 66.0%
  • differentiation-committed oligodendrocyte precursor CL4023059
    CSI 3.3
    rCSI 6.0%
    PRS 68.5%
  • pancreatic D cell CL0000173
    CSI 3.4
    rCSI 3.4%
    PRS 80.1%
  • retinal blood vessel endothelial cell CL0002585
    CSI 3.5
    rCSI 5.7%
    PRS 81.0%
  • mature astrocyte CL0002627
    CSI 3.6
    rCSI 15.2%
    PRS 69.8%
  • tracheobronchial smooth muscle cell CL0019019
    CSI 3.6
    rCSI 6.4%
    PRS 83.0%
  • mature microglial cell CL0002629
    CSI 3.6
    rCSI 15.1%
    PRS 77.4%
  • neural progenitor cell CL0011020
    CSI 3.6
    rCSI 16.0%
    PRS 65.7%
  • CD8-positive, CD28-negative, alpha-beta regulatory T cell CL0000920
    CSI 3.7
    rCSI 7.4%
    PRS 89.5%
  • diffuse bipolar 3b cell CL4033030
    CSI 3.7
    rCSI 24.8%
    PRS 72.7%
  • amacrine cell CL0000561
    CSI 3.8
    rCSI 10.9%
    PRS 66.4%
  • VIP GABAergic cortical interneuron CL4023016
    CSI 3.8
    rCSI 4.6%
    PRS 58.8%
  • GABAergic neuron CL0000617
    CSI 3.8
    rCSI 12.8%
    PRS 61.1%
  • podocyte CL0000653
    CSI 4.0
    rCSI 17.9%
    PRS 77.6%
  • ciliated columnar cell of tracheobronchial tree CL0002145
    CSI 4.4
    rCSI 10.1%
    PRS 71.3%
  • alveolar type 1 fibroblast cell CL4028004
    CSI 4.5
    rCSI 4.9%
    PRS 79.4%
  • macroglial cell CL0000126
    CSI 4.5
    rCSI 11.6%
    PRS 74.5%
  • endothelial cell of vascular tree CL0002139
    CSI 4.7
    rCSI 25.5%
    PRS 74.0%
  • ON-bipolar cell CL0000749
    CSI 4.8
    rCSI 7.2%
    PRS 77.4%
  • adipocyte CL0000136
    CSI 4.8
    rCSI 6.2%
    PRS 67.5%
  • neuroblast (sensu Nematoda and Protostomia) CL0000338
    CSI 4.9
    rCSI 5.7%
    PRS 69.4%
  • chondrocyte CL0000138
    CSI 5.0
    rCSI 7.9%
    PRS 70.0%
  • retinal cone cell CL0000573
    CSI 5.0
    rCSI 8.0%
    PRS 66.9%
  • cerebral cortex endothelial cell CL1001602
    CSI 5.1
    rCSI 8.8%
    PRS 68.4%
  • diffuse bipolar 2 cell CL4033028
    CSI 5.2
    rCSI 40.1%
    PRS 72.1%
  • neuroblast (sensu Vertebrata) CL0000031
    CSI 5.2
    rCSI 6.7%
    PRS 73.4%
  • vascular leptomeningeal cell CL4023051
    CSI 5.2
    rCSI 9.2%
    PRS 70.5%
  • Schwann cell CL0002573
    CSI 5.4
    rCSI 15.4%
    PRS 73.4%
  • contractile cell CL0000183
    CSI 5.6
    rCSI 16.4%
    PRS 76.5%
  • retinal rod cell CL0000604
    CSI 5.7
    rCSI 10.0%
    PRS 73.0%
  • perivascular cell CL4033054
    CSI 5.7
    rCSI 7.9%
    PRS 81.7%
  • central nervous system neuron CL2000029
    CSI 5.8
    rCSI 42.3%
    PRS 64.2%
  • neural crest cell CL0011012
    CSI 5.8
    rCSI 4.6%
    PRS 65.4%
  • medium spiny neuron CL1001474
    CSI 5.8
    rCSI 50.3%
    PRS 64.8%
  • sncg GABAergic cortical interneuron CL4023015
    CSI 5.9
    rCSI 9.5%
    PRS 60.6%
  • peripheral nervous system neuron CL2000032
    CSI 6.1
    rCSI 8.2%
    PRS 68.6%
  • neural cell CL0002319
    CSI 6.2
    rCSI 23.3%
    PRS 60.1%
  • radial glial cell CL0000681
    CSI 6.4
    rCSI 8.8%
    PRS 75.9%
  • ependymal cell CL0000065
    CSI 6.6
    rCSI 13.3%
    PRS 55.4%
  • Mueller cell CL0000636
    CSI 6.8
    rCSI 15.5%
    PRS 68.5%
  • caudal ganglionic eminence derived cortical interneuron CL4023064
    CSI 7.0
    rCSI 12.3%
    PRS 58.1%
  • astrocyte of the cerebral cortex CL0002605
    CSI 7.0
    rCSI 15.6%
    PRS 59.6%
  • inhibitory interneuron CL0000498
    CSI 7.0
    rCSI 16.1%
    PRS 65.1%
  • interneuron CL0000099
    CSI 7.1
    rCSI 14.2%
    PRS 66.9%
  • cardiac endothelial cell CL0010008
    CSI 8.0
    rCSI 32.4%
    PRS 76.6%
  • lung pericyte CL0009089
    CSI 8.1
    rCSI 21.4%
    PRS 84.3%
  • glioblast CL0000030
    CSI 8.8
    rCSI 14.0%
    PRS 68.8%
  • H2 horizontal cell CL0004218
    CSI 8.8
    rCSI 43.9%
    PRS 72.5%
  • cerebral cortex neuron CL0010012
    CSI 9.0
    rCSI 36.6%
    PRS 69.5%
  • bronchus fibroblast of lung CL2000093
    CSI 9.0
    rCSI 7.3%
    PRS 76.6%

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 [CHN1](/details-gene/1123) (chimerin 1) is a protein-coding gene located on chromosome 2q31.1 that encodes N-chimaerin, a GTPase-activating protein (GAP). This protein plays a crucial role in intracellular signaling by specifically regulating members of the Rho family of small GTPases, such as Rac1 and Cdc42. Functionally, [CHN1](/details-gene/1123) is integral to processes including axon guidance and Ephrin receptor signaling. Expression data reveals that [CHN1](/details-gene/1123) is highly and specifically expressed across a wide range of neuronal subtypes, including cortical glutamatergic and GABAergic neurons, as well as retinal neurons, underscoring its specialized function in the central nervous system. Clinically, hyperactivating mutations in [CHN1](/details-gene/1123) have been identified as the cause of Duane's retraction syndrome ([118423](https://omim.org/entry/118423)), a congenital eye movement disorder [Link](https://doi.org/10.1126/science.1156121). ## Cellular Roles and Expression Landscape **Overall**, the expression profile of [CHN1](/details-gene/1123) demonstrates a profound and specific role within the nervous system. The gene shows its highest significance in a diverse array of neuronal populations. These include excitatory neurons such as [L4 intratelencephalic projecting glutamatergic neuron](/details-cell/CL4030063) (CSI: 29.36) and [L2/3 intratelencephalic projecting glutamatergic neuron](/details-cell/CL4030059) (CSI: 28.83), as well as inhibitory neurons like the [sst GABAergic cortical interneuron](/details-cell/CL4023017) (CSI: 29.98). This suggests its function is not limited to a single neurotransmitter system but is broadly important for cortical circuitry. Furthermore, [CHN1](/details-gene/1123) is a key marker in specialized sensory neurons of the retina, with high significance in the [OFF-bipolar cell](/details-cell/CL0000750) (CSI: 23.01) and [retinal bipolar neuron](/details-cell/CL0000748) (CSI: 16.80). Its prominent expression in these cell types, which are critical for processing visual information, points to a specific role in retinal signal transduction or synaptic organization. The consistent high CSI across multiple distinct [neuron](/details-cell/CL0000540) subtypes (CSI: 21.31) solidifies the identity of [CHN1](/details-gene/1123) as a fundamental regulator of neuronal function and development. ## Pathways and Molecular Function The molecular functions of [CHN1](/details-gene/1123) are tightly linked to the regulation of cellular architecture and signaling, which is consistent with its expression pattern in neurons. As a GTPase-activating protein ([GO:0005096](https://www.ebi.ac.uk/QuickGO/term/GO:0005096)), its primary role is to negatively regulate Rho family GTPases. This is highlighted by its participation in the [Cdc42 gtpase cycle](/details-pathway/R-HSA-9013148), [Rac1 gtpase cycle](/details-pathway/R-HSA-9013149), and the broader [Signaling by rho gtpases](/details-pathway/R-HSA-194315) pathway. These GTPases are master regulators of the actin cytoskeleton, and their precise control is essential for dynamic neuronal processes. This core function directly supports its involvement in biological processes critical for nervous system development and maintenance. Functional annotations reveal [CHN1](/details-gene/1123) is involved in the [Ephrin receptor signaling pathway](/details-pathway/GO:0048013), [Motor neuron axon guidance](/details-pathway/GO:0008045), and the [Regulation of axonogenesis](/details-pathway/GO:0050770). These pathways are fundamental for establishing correct neural circuits by guiding developing axons to their targets. Its binding activity with Ephrin receptors ([GO:0046875](https://www.ebi.ac.uk/QuickGO/term/GO:0046875)) positions it as a key downstream effector that translates extracellular guidance cues into intracellular cytoskeletal changes. Its localization within the [Cytosol](/details-cell/GO:0005829) ([GO:0005829](https://www.ebi.ac.uk/QuickGO/term/GO:0005829)) is appropriate for its role as an intracellular signaling mediator. ## Research Directions The established role of [CHN1](/details-gene/1123) in axon guidance during development and its persistent high expression in mature cortical and retinal neurons suggest its functions may extend beyond development into the maintenance of adult neural circuits. **Testable Hypotheses:** 1. Given its function as a Rac1-GAP and the critical role of Rac1 in regulating cytoskeletal dynamics at the synapse, [CHN1](/details-gene/1123) may be a key regulator of dendritic spine morphology and synaptic plasticity in adult cortical [glutamatergic neuron](/details-cell/CL0000679)s. Dysregulation of its GAP activity could contribute to synaptic deficits associated with neurological or psychiatric disorders. 2. The high significance of [CHN1](/details-gene/1123) in retinal bipolar cells suggests it is essential for the function of the retinal circuit. It is hypothesized that [CHN1](/details-gene/1123) activity is required for the maintenance of the highly specialized ribbon synapses of [retinal bipolar neuron](/details-cell/CL0000748)s, thereby modulating the fidelity and speed of visual signal transmission to retinal ganglion cells. **Proposed Experimental Approach:** To test the hypothesis that [CHN1](/details-gene/1123) is a key regulator of synaptic plasticity (Hypothesis 1), a conditional knockout mouse model could be generated to specifically delete *Chn1* in forebrain excitatory neurons (e.g., using a *Camk2a-Cre* driver line). Hippocampal or cortical slices from these mutant mice could be subjected to electrophysiological analysis to measure long-term potentiation (LTP) and long-term depression (LTD), key cellular correlates of learning and memory. Concurrently, high-resolution confocal or two-photon microscopy could be used to analyze dendritic spine density and morphology in these neurons to determine if loss of [CHN1](/details-gene/1123) leads to structural synaptic defects. **Therapeutic Potential:** The discovery that hyperactivating mutations in [CHN1](/details-gene/1123) cause Duane's retraction syndrome indicates that excessive, rather than insufficient, protein activity is pathogenic [Link](https://doi.org/10.1126/science.1156121). Therefore, a therapeutic strategy would focus on **inhibition** of N-chimaerin's GAP activity. The development of specific small molecule inhibitors targeting the catalytic domain of [CHN1](/details-gene/1123) could represent a viable strategy. While treating a congenital developmental disorder like Duane's syndrome postnatally with such an inhibitor would be challenging, this approach could be relevant for other neurological conditions that may be driven by hyperactive Rac1 signaling. The highly neuron-specific expression of [CHN1](/details-gene/1123) is advantageous as it may limit peripheral off-target effects, although effective delivery of an inhibitor across the blood-brain barrier would be a significant hurdle.

Genular Protein ID: 3591359956

Symbol: CHIN_HUMAN

Name: N-chimaerin

UniProtKB Accession Codes:

Database IDs:

Citations:

PubMed ID: 2299665

Title: Novel human brain cDNA encoding a 34,000 Mr protein n-chimaerin, related to both the regulatory domain of protein kinase C and BCR, the product of the breakpoint cluster region gene.

PubMed ID: 2299665

DOI: 10.1016/0022-2836(90)90006-8

PubMed ID: 1445199

Title: Developmental regulation and neuronal expression of the mRNA of rat n-chimaerin, a p21rac GAP:cDNA sequence.

PubMed ID: 1445199

DOI: 10.1042/bj2870415

PubMed ID: 8336731

Title: Alpha 2-chimerin, an SH2-containing GTPase-activating protein for the ras-related protein p21rac derived by alternate splicing of the human n-chimerin gene, is selectively expressed in brain regions and testes.

PubMed ID: 8336731

DOI: 10.1128/mcb.13.8.4986-4998.1993

PubMed ID: 14702039

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

PubMed ID: 14702039

DOI: 10.1038/ng1285

PubMed ID: 15815621

Title: Generation and annotation of the DNA sequences of human chromosomes 2 and 4.

PubMed ID: 15815621

DOI: 10.1038/nature03466

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: 7867622

Title: Promoter region of the transcriptional unit for human alpha 1-chimaerin, a neuron-specific GTPase-activating protein for p21rac.

PubMed ID: 7867622

DOI: 10.1111/j.1432-1033.1995.tb20183.x

PubMed ID: 2268301

Title: Human brain n-chimaerin cDNA encodes a novel phorbol ester receptor.

PubMed ID: 2268301

DOI: 10.1042/bj2720767

PubMed ID: 19413330

Title: Lys-N and trypsin cover complementary parts of the phosphoproteome in a refined SCX-based approach.

PubMed ID: 19413330

DOI: 10.1021/ac9004309

PubMed ID: 23186163

Title: Toward a comprehensive characterization of a human cancer cell phosphoproteome.

PubMed ID: 23186163

DOI: 10.1021/pr300630k

PubMed ID: 18653847

Title: Human CHN1 mutations hyperactivate alpha2-chimaerin and cause Duane's retraction syndrome.

PubMed ID: 18653847

DOI: 10.1126/science.1156121

Sequence Information:

  • Length: 459
  • Mass: 53172
  • Checksum: 04C4CC9BCC611389
  • Sequence:
  • MALTLFDTDE YRPPVWKSYL YQLQQEAPHP RRITCTCEVE NRPKYYGREF HGMISREAAD 
    QLLIVAEGSY LIRESQRQPG TYTLALRFGS QTRNFRLYYD GKHFVGEKRF ESIHDLVTDG 
    LITLYIETKA AEYIAKMTIN PIYEHVGYTT LNREPAYKKH MPVLKETHDE RDSTGQDGVS 
    EKRLTSLVRR ATLKENEQIP KYEKIHNFKV HTFRGPHWCE YCANFMWGLI AQGVKCADCG 
    LNVHKQCSKM VPNDCKPDLK HVKKVYSCDL TTLVKAHTTK RPMVVDMCIR EIESRGLNSE 
    GLYRVSGFSD LIEDVKMAFD RDGEKADISV NMYEDINIIT GALKLYFRDL PIPLITYDAY 
    PKFIESAKIM DPDEQLETLH EALKLLPPAH CETLRYLMAH LKRVTLHEKE NLMNAENLGI 
    VFGPTLMRSP ELDAMAALND IRYQRLVVEL LIKNEDILF