Details for: PKIB

Gene ID: 5570

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: PKIB

Ensembl ID: ENSG00000135549

Description: cAMP-dependent protein kinase inhibitor beta

Cell Significance Landscape

Associated with

Significant Cells

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

  • pancreatic D cell CL0000173
    CSI 34.1
    rCSI 33.53%
    PRS 78.65
  • placental villous trophoblast CL2000060
    CSI 33
    rCSI 50.99%
    PRS 74.98
  • cerebellar granule cell CL0001031
    CSI 22.77
    rCSI 33.48%
    PRS 68.57
  • colon epithelial cell CL0011108
    CSI 22.57
    rCSI 23.64%
    PRS 73.1
  • syncytiotrophoblast cell CL0000525
    CSI 17.08
    rCSI 49.19%
    PRS 83.64
  • Langerhans cell CL0000453
    CSI 16.2
    rCSI 24.74%
    PRS 87.86
  • foveolar cell of stomach CL0002179
    CSI 14.15
    rCSI 30.11%
    PRS 83.31
  • type B pancreatic cell CL0000169
    CSI 13.16
    rCSI 29.14%
    PRS 74.89
  • CD1c-positive myeloid dendritic cell CL0002399
    CSI 12.37
    rCSI 14.94%
    PRS 84
  • enteroendocrine cell CL0000164
    CSI 12.37
    rCSI 16.9%
    PRS 76.34
  • intestinal epithelial cell CL0002563
    CSI 11.84
    rCSI 12.38%
    PRS 73.68
  • monocyte CL0000576
    CSI 10.97
    rCSI 19.82%
    PRS 82.79
  • type EC enteroendocrine cell CL0000577
    CSI 9.66
    rCSI 34.29%
    PRS 81.18
  • inhibitory interneuron CL0000498
    CSI 9.3
    rCSI 21.47%
    PRS 63.79
  • enterocyte of epithelium of large intestine CL0002071
    CSI 9.27
    rCSI 48.67%
    PRS 82.67
  • retinal bipolar neuron CL0000748
    CSI 9.22
    rCSI 17.27%
    PRS 63.76
  • secretory cell CL0000151
    CSI 8.75
    rCSI 9.13%
    PRS 75.49
  • pancreatic epsilon cell CL0005019
    CSI 8.73
    rCSI 40.71%
    PRS 86.47
  • melanocyte CL0000148
    CSI 8.71
    rCSI 6.45%
    PRS 68.82
  • enterocyte CL0000584
    CSI 8.28
    rCSI 13.36%
    PRS 75.84
  • lung neuroendocrine cell CL1000223
    CSI 8.08
    rCSI 11.95%
    PRS 80.52
  • goblet cell CL0000160
    CSI 7.72
    rCSI 7.29%
    PRS 75
  • smooth muscle cell CL0000192
    CSI 7.49
    rCSI 17.86%
    PRS 73.89
  • intestine goblet cell CL0019031
    CSI 7.33
    rCSI 6.5%
    PRS 73.8
  • nasal mucosa goblet cell CL0002480
    CSI 7.26
    rCSI 8.42%
    PRS 80.59
  • pancreatic PP cell CL0002275
    CSI 6.85
    rCSI 27.28%
    PRS 84.57
  • enteroendocrine cell of small intestine CL0009006
    CSI 6.66
    rCSI 14.66%
    PRS 84.99
  • lung ciliated cell CL1000271
    CSI 6.64
    rCSI 7.68%
    PRS 67.54
  • neuroblast (sensu Vertebrata) CL0000031
    CSI 6.63
    rCSI 8.51%
    PRS 72.22
  • ON-bipolar cell CL0000749
    CSI 6.27
    rCSI 9.32%
    PRS 76.38
  • paneth cell CL0000510
    CSI 6.25
    rCSI 9.22%
    PRS 87.41
  • stem cell CL0000034
    CSI 6.08
    rCSI 5.86%
    PRS 68.47
  • mononuclear phagocyte CL0000113
    CSI 5.9
    rCSI 12.99%
    PRS 79.96
  • renal alpha-intercalated cell CL0005011
    CSI 5.77
    rCSI 7.71%
    PRS 82.72
  • myeloid dendritic cell CL0000782
    CSI 5.68
    rCSI 8.22%
    PRS 89.01
  • retinal cone cell CL0000573
    CSI 5.67
    rCSI 9.12%
    PRS 65.65
  • ciliated cell CL0000064
    CSI 5.62
    rCSI 9.11%
    PRS 71.22
  • Kupffer cell CL0000091
    CSI 5.48
    rCSI 12.54%
    PRS 76.68
  • dendritic cell CL0000451
    CSI 5.28
    rCSI 6.51%
    PRS 81.79
  • lung secretory cell CL1000272
    CSI 5.28
    rCSI 13.06%
    PRS 75.21
  • radial glial cell CL0000681
    CSI 5.21
    rCSI 7.23%
    PRS 74.57
  • myeloid leukocyte CL0000766
    CSI 5.1
    rCSI 4.71%
    PRS 77.51
  • interneuron CL0000099
    CSI 5.02
    rCSI 10.09%
    PRS 65.49
  • chandelier pvalb GABAergic cortical interneuron CL4023036
    CSI 4.99
    rCSI 15.62%
    PRS 61.47
  • luminal cell of prostate epithelium CL0002340
    CSI 4.83
    rCSI 26%
    PRS 84.27
  • club cell CL0000158
    CSI 4.68
    rCSI 6.86%
    PRS 70.58
  • pancreatic A cell CL0000171
    CSI 4.64
    rCSI 4.86%
    PRS 79.1
  • neural crest cell CL0011012
    CSI 4.63
    rCSI 3.66%
    PRS 63.8
  • pvalb GABAergic cortical interneuron CL4023018
    CSI 4.46
    rCSI 5.55%
    PRS 55.21
  • transit amplifying cell of colon CL0009011
    CSI 4.39
    rCSI 5.15%
    PRS 77.81
  • M cell of gut CL0000682
    CSI 4.32
    rCSI 4.59%
    PRS 82.01
  • multi-ciliated epithelial cell CL0005012
    CSI 4.2
    rCSI 4.19%
    PRS 69.56
  • renal beta-intercalated cell CL0002201
    CSI 4.12
    rCSI 9.83%
    PRS 76.06
  • transit amplifying cell CL0009010
    CSI 3.92
    rCSI 6%
    PRS 85.45
  • astrocyte of the cerebral cortex CL0002605
    CSI 3.82
    rCSI 8.56%
    PRS 58
  • central nervous system neuron CL2000029
    CSI 3.79
    rCSI 27.85%
    PRS 62.7
  • pancreatic ductal cell CL0002079
    CSI 3.73
    rCSI 7.26%
    PRS 79.14
  • mucus secreting cell CL0000319
    CSI 3.7
    rCSI 5.88%
    PRS 85.18
  • small intestine goblet cell CL1000495
    CSI 3.68
    rCSI 8.07%
    PRS 82
  • sst GABAergic cortical interneuron CL4023017
    CSI 3.64
    rCSI 4.69%
    PRS 58.52
  • early lymphoid progenitor CL0000936
    CSI 3.55
    rCSI 3.12%
    PRS 81.15
  • P/D1 enteroendocrine cell CL0002268
    CSI 3.43
    rCSI 18.68%
    PRS 85.48
  • ciliated columnar cell of tracheobronchial tree CL0002145
    CSI 3.37
    rCSI 7.69%
    PRS 70.13
  • retinal pigment epithelial cell CL0002586
    CSI 3.37
    rCSI 6.69%
    PRS 71.96
  • retinal rod cell CL0000604
    CSI 3.31
    rCSI 5.83%
    PRS 71.79
  • extravillous trophoblast CL0008036
    CSI 3.23
    rCSI 4%
    PRS 73.57
  • dendritic cell, human CL0001056
    CSI 3.05
    rCSI 4.69%
    PRS 84.94
  • myeloid dendritic cell, human CL0001057
    CSI 3.04
    rCSI 17.09%
    PRS 90.96
  • brush cell of tracheobronchial tree CL0002075
    CSI 3
    rCSI 8.9%
    PRS 84.84
  • colon macrophage CL0009038
    CSI 2.84
    rCSI 13.12%
    PRS 89.15
  • tracheal goblet cell CL1000329
    CSI 2.81
    rCSI 6.14%
    PRS 84.22
  • near-projecting glutamatergic cortical neuron CL4023012
    CSI 2.56
    rCSI 9.69%
    PRS 57.67
  • basal cell CL0000646
    CSI 2.52
    rCSI 3.36%
    PRS 74.8
  • VIP GABAergic cortical interneuron CL4023016
    CSI 2.51
    rCSI 2.99%
    PRS 57.22
  • retinal ganglion cell CL0000740
    CSI 2.51
    rCSI 5.53%
    PRS 61.33
  • Bergmann glial cell CL0000644
    CSI 2.47
    rCSI 3.38%
    PRS 67.79
  • mesodermal cell CL0000222
    CSI 2.37
    rCSI 2.85%
    PRS 73.88
  • common dendritic progenitor CL0001029
    CSI 2.24
    rCSI 2.81%
    PRS 85.19
  • colonocyte CL1000347
    CSI 2.21
    rCSI 3.17%
    PRS 77.44
  • type L enteroendocrine cell CL0002279
    CSI 2.18
    rCSI 4.09%
    PRS 84.9
  • pancreatic acinar cell CL0002064
    CSI 2.18
    rCSI 2.89%
    PRS 81.85
  • deuterosomal cell CL4033044
    CSI 2.03
    rCSI 6.88%
    PRS 75.04
  • intestinal crypt stem cell of small intestine CL0009017
    CSI 1.93
    rCSI 5.2%
    PRS 81.43
  • respiratory goblet cell CL0002370
    CSI 1.87
    rCSI 20.36%
    PRS 85.5
  • OFF-bipolar cell CL0000750
    CSI 1.86
    rCSI 2.54%
    PRS 79.29
  • ciliated epithelial cell CL0000067
    CSI 1.76
    rCSI 1.55%
    PRS 64.51
  • caudal ganglionic eminence derived cortical interneuron CL4023064
    CSI 1.72
    rCSI 3.04%
    PRS 56.48
  • luminal epithelial cell of mammary gland CL0002326
    CSI 1.67
    rCSI 3.04%
    PRS 87.08
  • L6b glutamatergic cortical neuron CL4023038
    CSI 1.66
    rCSI 5.18%
    PRS 59.02
  • cerebral cortex pyramidal neuron CL4023111
    CSI 1.65
    rCSI 10.15%
    PRS 83.55
  • kidney loop of Henle thin ascending limb epithelial cell CL1001107
    CSI 1.62
    rCSI 4.18%
    PRS 70.92
  • BEST4+ enteroycte CL4030026
    CSI 1.5
    rCSI 1.87%
    PRS 77.14
  • OFF midget ganglion cell CL4033047
    CSI 1.39
    rCSI 28.29%
    PRS 66.8
  • sncg GABAergic cortical interneuron CL4023015
    CSI 1.27
    rCSI 2.04%
    PRS 58.96
  • corneal epithelial cell CL0000575
    CSI 1.25
    rCSI 3.57%
    PRS 83.86
  • mammary gland epithelial cell CL0002327
    CSI 1.16
    rCSI 4.06%
    PRS 85.02
  • mesenchymal cell CL0008019
    CSI 1.15
    rCSI 2.92%
    PRS 69.45
  • respiratory basal cell CL0002633
    CSI 1.14
    rCSI 1.18%
    PRS 80.61
  • lamp5 GABAergic cortical interneuron CL4023011
    CSI 1.14
    rCSI 1.91%
    PRS 57.25
  • peptic cell CL0000155
    CSI 1.08
    rCSI 10.67%
    PRS 87.95
  • ON midget ganglion cell CL4033046
    CSI 0.3
    rCSI 6.9%
    PRS 65.5%
  • enterocyte of epithelium of small intestine CL1000334
    CSI 0.4
    rCSI 5.5%
    PRS 85.7%
  • corticothalamic-projecting glutamatergic cortical neuron CL4023013
    CSI 0.4
    rCSI 2.4%
    PRS 58.1%
  • eye photoreceptor cell CL0000287
    CSI 0.5
    rCSI 6.0%
    PRS 86.8%
  • enteroendocrine cell of colon CL0009042
    CSI 0.8
    rCSI 3.5%
    PRS 86.4%
  • bronchial goblet cell CL1000312
    CSI 0.8
    rCSI 3.1%
    PRS 85.4%
  • colon goblet cell CL0009039
    CSI 0.8
    rCSI 1.9%
    PRS 82.5%
  • L5 extratelencephalic projecting glutamatergic cortical neuron CL4023041
    CSI 0.8
    rCSI 2.9%
    PRS 55.3%
  • Hofbauer cell CL3000001
    CSI 0.9
    rCSI 1.7%
    PRS 84.8%
  • neuroendocrine cell CL0000165
    CSI 1.0
    rCSI 3.8%
    PRS 86.1%
  • intestinal tuft cell CL0019032
    CSI 1.1
    rCSI 1.6%
    PRS 80.0%
  • peptic cell CL0000155
    CSI 1.1
    rCSI 10.7%
    PRS 88.0%
  • lamp5 GABAergic cortical interneuron CL4023011
    CSI 1.1
    rCSI 1.9%
    PRS 57.3%
  • respiratory basal cell CL0002633
    CSI 1.1
    rCSI 1.2%
    PRS 80.6%
  • mesenchymal cell CL0008019
    CSI 1.2
    rCSI 2.9%
    PRS 69.5%
  • mammary gland epithelial cell CL0002327
    CSI 1.2
    rCSI 4.1%
    PRS 85.0%
  • corneal epithelial cell CL0000575
    CSI 1.3
    rCSI 3.6%
    PRS 83.9%
  • sncg GABAergic cortical interneuron CL4023015
    CSI 1.3
    rCSI 2.0%
    PRS 59.0%
  • OFF midget ganglion cell CL4033047
    CSI 1.4
    rCSI 28.3%
    PRS 66.8%
  • BEST4+ enteroycte CL4030026
    CSI 1.5
    rCSI 1.9%
    PRS 77.1%
  • kidney loop of Henle thin ascending limb epithelial cell CL1001107
    CSI 1.6
    rCSI 4.2%
    PRS 70.9%
  • cerebral cortex pyramidal neuron CL4023111
    CSI 1.7
    rCSI 10.2%
    PRS 83.6%
  • L6b glutamatergic cortical neuron CL4023038
    CSI 1.7
    rCSI 5.2%
    PRS 59.0%
  • luminal epithelial cell of mammary gland CL0002326
    CSI 1.7
    rCSI 3.0%
    PRS 87.1%
  • caudal ganglionic eminence derived cortical interneuron CL4023064
    CSI 1.7
    rCSI 3.0%
    PRS 56.5%
  • ciliated epithelial cell CL0000067
    CSI 1.8
    rCSI 1.6%
    PRS 64.5%
  • OFF-bipolar cell CL0000750
    CSI 1.9
    rCSI 2.5%
    PRS 79.3%
  • respiratory goblet cell CL0002370
    CSI 1.9
    rCSI 20.4%
    PRS 85.5%
  • intestinal crypt stem cell of small intestine CL0009017
    CSI 1.9
    rCSI 5.2%
    PRS 81.4%
  • deuterosomal cell CL4033044
    CSI 2.0
    rCSI 6.9%
    PRS 75.0%
  • pancreatic acinar cell CL0002064
    CSI 2.2
    rCSI 2.9%
    PRS 81.9%
  • type L enteroendocrine cell CL0002279
    CSI 2.2
    rCSI 4.1%
    PRS 84.9%
  • colonocyte CL1000347
    CSI 2.2
    rCSI 3.2%
    PRS 77.4%
  • common dendritic progenitor CL0001029
    CSI 2.2
    rCSI 2.8%
    PRS 85.2%
  • mesodermal cell CL0000222
    CSI 2.4
    rCSI 2.9%
    PRS 73.9%
  • Bergmann glial cell CL0000644
    CSI 2.5
    rCSI 3.4%
    PRS 67.8%
  • retinal ganglion cell CL0000740
    CSI 2.5
    rCSI 5.5%
    PRS 61.3%
  • VIP GABAergic cortical interneuron CL4023016
    CSI 2.5
    rCSI 3.0%
    PRS 57.2%
  • basal cell CL0000646
    CSI 2.5
    rCSI 3.4%
    PRS 74.8%
  • near-projecting glutamatergic cortical neuron CL4023012
    CSI 2.6
    rCSI 9.7%
    PRS 57.7%
  • tracheal goblet cell CL1000329
    CSI 2.8
    rCSI 6.1%
    PRS 84.2%
  • colon macrophage CL0009038
    CSI 2.8
    rCSI 13.1%
    PRS 89.2%
  • brush cell of tracheobronchial tree CL0002075
    CSI 3.0
    rCSI 8.9%
    PRS 84.8%
  • myeloid dendritic cell, human CL0001057
    CSI 3.0
    rCSI 17.1%
    PRS 91.0%
  • dendritic cell, human CL0001056
    CSI 3.1
    rCSI 4.7%
    PRS 84.9%
  • extravillous trophoblast CL0008036
    CSI 3.2
    rCSI 4.0%
    PRS 73.6%
  • retinal rod cell CL0000604
    CSI 3.3
    rCSI 5.8%
    PRS 71.8%
  • retinal pigment epithelial cell CL0002586
    CSI 3.4
    rCSI 6.7%
    PRS 72.0%
  • ciliated columnar cell of tracheobronchial tree CL0002145
    CSI 3.4
    rCSI 7.7%
    PRS 70.1%
  • P/D1 enteroendocrine cell CL0002268
    CSI 3.4
    rCSI 18.7%
    PRS 85.5%
  • early lymphoid progenitor CL0000936
    CSI 3.6
    rCSI 3.1%
    PRS 81.2%
  • sst GABAergic cortical interneuron CL4023017
    CSI 3.6
    rCSI 4.7%
    PRS 58.5%
  • small intestine goblet cell CL1000495
    CSI 3.7
    rCSI 8.1%
    PRS 82.0%
  • mucus secreting cell CL0000319
    CSI 3.7
    rCSI 5.9%
    PRS 85.2%
  • pancreatic ductal cell CL0002079
    CSI 3.7
    rCSI 7.3%
    PRS 79.1%
  • central nervous system neuron CL2000029
    CSI 3.8
    rCSI 27.9%
    PRS 62.7%
  • astrocyte of the cerebral cortex CL0002605
    CSI 3.8
    rCSI 8.6%
    PRS 58.0%
  • transit amplifying cell CL0009010
    CSI 3.9
    rCSI 6.0%
    PRS 85.5%
  • renal beta-intercalated cell CL0002201
    CSI 4.1
    rCSI 9.8%
    PRS 76.1%
  • multi-ciliated epithelial cell CL0005012
    CSI 4.2
    rCSI 4.2%
    PRS 69.6%
  • M cell of gut CL0000682
    CSI 4.3
    rCSI 4.6%
    PRS 82.0%
  • transit amplifying cell of colon CL0009011
    CSI 4.4
    rCSI 5.2%
    PRS 77.8%
  • pvalb GABAergic cortical interneuron CL4023018
    CSI 4.5
    rCSI 5.6%
    PRS 55.2%
  • neural crest cell CL0011012
    CSI 4.6
    rCSI 3.7%
    PRS 63.8%
  • pancreatic A cell CL0000171
    CSI 4.6
    rCSI 4.9%
    PRS 79.1%
  • club cell CL0000158
    CSI 4.7
    rCSI 6.9%
    PRS 70.6%
  • luminal cell of prostate epithelium CL0002340
    CSI 4.8
    rCSI 26.0%
    PRS 84.3%
  • chandelier pvalb GABAergic cortical interneuron CL4023036
    CSI 5.0
    rCSI 15.6%
    PRS 61.5%
  • interneuron CL0000099
    CSI 5.0
    rCSI 10.1%
    PRS 65.5%
  • myeloid leukocyte CL0000766
    CSI 5.1
    rCSI 4.7%
    PRS 77.5%
  • radial glial cell CL0000681
    CSI 5.2
    rCSI 7.2%
    PRS 74.6%
  • lung secretory cell CL1000272
    CSI 5.3
    rCSI 13.1%
    PRS 75.2%
  • dendritic cell CL0000451
    CSI 5.3
    rCSI 6.5%
    PRS 81.8%
  • Kupffer cell CL0000091
    CSI 5.5
    rCSI 12.5%
    PRS 76.7%
  • ciliated cell CL0000064
    CSI 5.6
    rCSI 9.1%
    PRS 71.2%
  • retinal cone cell CL0000573
    CSI 5.7
    rCSI 9.1%
    PRS 65.7%
  • myeloid dendritic cell CL0000782
    CSI 5.7
    rCSI 8.2%
    PRS 89.0%
  • renal alpha-intercalated cell CL0005011
    CSI 5.8
    rCSI 7.7%
    PRS 82.7%
  • mononuclear phagocyte CL0000113
    CSI 5.9
    rCSI 13.0%
    PRS 80.0%
  • stem cell CL0000034
    CSI 6.1
    rCSI 5.9%
    PRS 68.5%
  • paneth cell CL0000510
    CSI 6.3
    rCSI 9.2%
    PRS 87.4%
  • ON-bipolar cell CL0000749
    CSI 6.3
    rCSI 9.3%
    PRS 76.4%
  • neuroblast (sensu Vertebrata) CL0000031
    CSI 6.6
    rCSI 8.5%
    PRS 72.2%
  • lung ciliated cell CL1000271
    CSI 6.6
    rCSI 7.7%
    PRS 67.5%
  • enteroendocrine cell of small intestine CL0009006
    CSI 6.7
    rCSI 14.7%
    PRS 85.0%
  • pancreatic PP cell CL0002275
    CSI 6.9
    rCSI 27.3%
    PRS 84.6%
  • nasal mucosa goblet cell CL0002480
    CSI 7.3
    rCSI 8.4%
    PRS 80.6%
  • intestine goblet cell CL0019031
    CSI 7.3
    rCSI 6.5%
    PRS 73.8%
  • smooth muscle cell CL0000192
    CSI 7.5
    rCSI 17.9%
    PRS 73.9%
  • goblet cell CL0000160
    CSI 7.7
    rCSI 7.3%
    PRS 75.0%
  • lung neuroendocrine cell CL1000223
    CSI 8.1
    rCSI 12.0%
    PRS 80.5%
  • enterocyte CL0000584
    CSI 8.3
    rCSI 13.4%
    PRS 75.8%
  • melanocyte CL0000148
    CSI 8.7
    rCSI 6.5%
    PRS 68.8%
  • pancreatic epsilon cell CL0005019
    CSI 8.7
    rCSI 40.7%
    PRS 86.5%
  • secretory cell CL0000151
    CSI 8.8
    rCSI 9.1%
    PRS 75.5%
  • retinal bipolar neuron CL0000748
    CSI 9.2
    rCSI 17.3%
    PRS 63.8%
  • enterocyte of epithelium of large intestine CL0002071
    CSI 9.3
    rCSI 48.7%
    PRS 82.7%
  • inhibitory interneuron CL0000498
    CSI 9.3
    rCSI 21.5%
    PRS 63.8%
  • type EC enteroendocrine cell CL0000577
    CSI 9.7
    rCSI 34.3%
    PRS 81.2%
  • monocyte CL0000576
    CSI 11.0
    rCSI 19.8%
    PRS 82.8%

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 [PKIB](/details-gene/5570), or cAMP-dependent protein kinase inhibitor beta, is a protein-coding gene located on chromosome 6q22.31. It functions as an endogenous inhibitor of cAMP-dependent protein kinase (PKA), a central enzyme in numerous signal transduction pathways. The expression profile of [PKIB](/details-gene/5570) indicates its significance in a diverse array of specialized cell types, most notably in endocrine cells such as [pancreatic D cells](/details-cell/CL0000173), placental cells including [placental villous trophoblasts](/details-cell/CL2000060), and various neuronal and epithelial populations. This pattern suggests a crucial role for [PKIB](/details-gene/5570) in fine-tuning PKA-mediated cellular processes, including hormone secretion, development, and neuronal function. ## Cellular Roles and Expression Landscape The expression landscape of [PKIB](/details-gene/5570) reveals its importance across multiple, functionally distinct tissues, a pattern consistent with its role as a regulator of the ubiquitous PKA signaling pathway. Analysis of its expression profile **Overall** highlights several key cellular contexts. A prominent role for [PKIB](/details-gene/5570) is suggested in endocrine and secretory cells. It is most significantly expressed in [pancreatic D cells](/details-cell/CL0000173) (CSI: 34.10), with high significance also observed in [type B pancreatic cells](/details-cell/CL0000169) and various [enteroendocrine cells](/details-cell/CL0000164). This strong association with hormone-secreting cells points to a function in modulating the release of key metabolic regulators, such as somatostatin and insulin, which are known to be controlled by cAMP/PKA signaling. [PKIB](/details-gene/5570) is also a key marker in placental tissue, with very high significance scores in [placental villous trophoblasts](/details-cell/CL2000060) and [syncytiotrophoblast cells](/details-cell/CL0000525). This suggests a potential role in regulating placental development, differentiation, and the synthesis of pregnancy-related hormones, processes which are heavily dependent on tightly controlled signaling cascades. Furthermore, [PKIB](/details-gene/5570) is significantly expressed in specific neuronal populations, including [cerebellar granule cells](/details-cell/CL0001031), and in various epithelial linings such as [colon epithelial cells](/details-cell/CL0011108) and [foveolar cells of the stomach](/details-cell/CL0002179). Its expression is also noted in immune cells, including [Langerhans cells](/details-cell/CL0000453) and [monocytes](/details-cell/CL0000576), indicating a potential modulatory role in immune surveillance and response. The broad, yet specific, expression pattern of [PKIB](/details-gene/5570) has been documented in early tissue expression analyses ([Link](https://doi.org/10.1042/0264-6021:3490403)). ## Pathways and Molecular Function The primary molecular function of [PKIB](/details-gene/5570) is cAMP-dependent protein kinase inhibitor activity ([GO:0004862](https://www.ebi.ac.uk/QuickGO/term/GO:0004862)), which leads to its involvement in the negative regulation of protein kinase activity ([GO:0006469](https://www.ebi.ac.uk/QuickGO/term/GO:0006469)). The PKA holoenzyme consists of regulatory and catalytic subunits; upon cAMP binding, the active catalytic subunits are released. The [PKIB](/details-gene/5570) protein binds directly to the free catalytic subunit, inhibiting its kinase activity. Its localization to both the cytoplasm ([GO:0005737](https://www.ebi.ac.uk/QuickGO/term/GO:0005737)) and nucleus ([GO:0005634](https://www.ebi.ac.uk/QuickGO/term/GO:0005634)) is consistent with its function, as it can inhibit the PKA catalytic subunit in both compartments. This inhibitory function provides a direct molecular mechanism for its observed cellular roles. For example, in [pancreatic D cells](/details-cell/CL0000173), [PKIB](/details-gene/5570) likely acts as a brake on PKA-driven somatostatin secretion. In neurons like the [cerebellar granule cell](/details-cell/CL0001031), it may modulate PKA-dependent phosphorylation of ion channels and transcription factors involved in synaptic plasticity and long-term potentiation. Interestingly, functional annotation also implicates [PKIB](/details-gene/5570) in the positive regulation of telomere maintenance ([GO:0032206](https://www.ebi.ac.uk/QuickGO/term/GO:0032206)), suggesting a less-characterized role in cellular longevity and proliferation. This function may be particularly relevant in highly proliferative cells where it is expressed, such as placental trophoblasts and intestinal epithelium. ## Research Directions The diverse expression pattern of [PKIB](/details-gene/5570) and its central role as a PKA inhibitor suggest several avenues for future research. **Proposed Hypotheses:** 1. Given its top-ranking significance in [pancreatic D cells](/details-cell/CL0000173), it is hypothesized that [PKIB](/details-gene/5570) is a critical rheostat for somatostatin secretion, preventing excessive hormone release in response to cAMP-elevating signals and thereby fine-tuning glucose homeostasis. 2. Based on its high expression in placental trophoblasts and its annotated role in telomere maintenance, [PKIB](/details-gene/5570) may integrate cAMP signaling with cell cycle control to regulate the balance between proliferation and differentiation of trophoblast lineages during placentation. **Experimental Approach:** To test the hypothesis that [PKIB](/details-gene/5570) negatively regulates somatostatin secretion, a loss-of-function study could be performed. Using CRISPR-Cas9 to knock out [PKIB](/details-gene/5570) in a human pancreatic islet organoid model, researchers could then stimulate the organoids with agents that raise intracellular cAMP levels, such as forskolin or GLP-1. The concentration of somatostatin released into the culture medium could be quantified via ELISA. A significantly higher level of somatostatin secretion in the [PKIB](/details-gene/5570)-knockout organoids compared to wild-type controls would provide strong evidence for its role as a key negative regulator in this process. **Therapeutic Potential:** As an endogenous inhibitor, [PKIB](/details-gene/5570) itself is not a conventional drug target for small-molecule inhibition. However, its activity and expression levels are highly relevant to diseases involving dysregulated PKA signaling, such as certain endocrine tumors (e.g., Carney complex) or metabolic disorders. Therapeutic strategies could focus on modulating its function rather than direct targeting. For conditions characterized by PKA hyperactivity, delivering [PKIB](/details-gene/5570) mimetics or using gene therapy to increase its local expression could represent a novel approach to restore normal signaling. Conversely, in cases where PKA signaling is pathologically dampened, targeted inhibition of [PKIB](/details-gene/5570) could be beneficial. The development of such therapies would depend on a deeper understanding of its tissue-specific regulatory mechanisms to ensure therapeutic precision.

Genular Protein ID: 1901204747

Symbol: IPKB_HUMAN

Name: cAMP-dependent protein kinase inhibitor beta

UniProtKB Accession Codes:

Database IDs:

Citations:

PubMed ID: 10880337

Title: Cloning and mapping of human PKIB and PKIG, and comparison of tissue expression patterns of three members of the protein kinase inhibitor family, including PKIA.

PubMed ID: 10880337

DOI: 10.1042/0264-6021:3490403

PubMed ID: 14702039

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

PubMed ID: 14702039

DOI: 10.1038/ng1285

PubMed ID: 14574404

Title: The DNA sequence and analysis of human chromosome 6.

PubMed ID: 14574404

DOI: 10.1038/nature02055

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

Sequence Information:

  • Length: 78
  • Mass: 8468
  • Checksum: CA4AE267B9ECCD81
  • Sequence:
  • MRTDSSKMTD VESGVANFAS SARAGRRNAL PDIQSSAATD GTSDLPLKLE ALSVKEDAKE 
    KDEKTTQDQL EKPQNEEK