Details for: PIP4K2A

Gene ID: 5305

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: PIP4K2A

Ensembl ID: ENSG00000150867

Description: phosphatidylinositol-5-phosphate 4-kinase type 2 alpha

Cell Significance Landscape

Associated with

Significant Cells

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

  • oligodendrocyte CL0000128
    CSI 31.71
    rCSI 93.71%
    PRS 26.85
  • differentiation-committed oligodendrocyte precursor CL4023059
    CSI 20.28
    rCSI 36.85%
    PRS 27.87
  • interstitial cell of Cajal CL0002088
    CSI 19.97
    rCSI 25.43%
    PRS 36.76
  • blood vessel endothelial cell CL0000071
    CSI 16.71
    rCSI 34.67%
    PRS 31.35
  • Hofbauer cell CL3000001
    CSI 16.51
    rCSI 31.18%
    PRS 40.55
  • L5 extratelencephalic projecting glutamatergic cortical neuron CL4023041
    CSI 16.5
    rCSI 59.36%
    PRS 19.29
  • mucosal invariant T cell CL0000940
    CSI 14.41
    rCSI 11.64%
    PRS 43.7
  • myeloid dendritic cell CL0000782
    CSI 12.42
    rCSI 18%
    PRS 46.72
  • basophil CL0000767
    CSI 12.25
    rCSI 25.91%
    PRS 54.7
  • CD14-positive monocyte CL0001054
    CSI 10.51
    rCSI 13.09%
    PRS 42.65
  • endothelial cell of pericentral hepatic sinusoid CL0019022
    CSI 10.44
    rCSI 32.16%
    PRS 44.16
  • lung resident memory CD8-positive, alpha-beta T cell CL4033039
    CSI 9.59
    rCSI 24.82%
    PRS 65.15
  • mature T cell CL0002419
    CSI 9.48
    rCSI 7.37%
    PRS 46.42
  • renal interstitial pericyte CL1001318
    CSI 9.04
    rCSI 24.91%
    PRS 30.1
  • oligodendrocyte precursor cell CL0002453
    CSI 8.44
    rCSI 18.57%
    PRS 22.95
  • lung macrophage CL1001603
    CSI 7.88
    rCSI 17.6%
    PRS 37.41
  • CD14-low, CD16-positive monocyte CL0002396
    CSI 7.8
    rCSI 6.01%
    PRS 30.62
  • promonocyte CL0000559
    CSI 7.39
    rCSI 12.67%
    PRS 41.2
  • neural crest cell CL0011012
    CSI 7.34
    rCSI 5.8%
    PRS 22.63
  • alveolar adventitial fibroblast CL4028006
    CSI 7.04
    rCSI 11.11%
    PRS 32.7
  • mature NK T cell CL0000814
    CSI 6.99
    rCSI 8.95%
    PRS 71.3
  • retinal bipolar neuron CL0000748
    CSI 6.96
    rCSI 13.04%
    PRS 24.31
  • naive B cell CL0000788
    CSI 6.48
    rCSI 5.56%
    PRS 43.32
  • cardiac endothelial cell CL0010008
    CSI 6.37
    rCSI 25.69%
    PRS 30.89
  • inhibitory interneuron CL0000498
    CSI 6.24
    rCSI 14.41%
    PRS 26.53
  • endothelial cell of placenta CL0009092
    CSI 6.22
    rCSI 30.64%
    PRS 42.16
  • Kupffer cell CL0000091
    CSI 6.17
    rCSI 14.1%
    PRS 31.67
  • lung pericyte CL0009089
    CSI 6.15
    rCSI 16.22%
    PRS 37.93
  • corticothalamic-projecting glutamatergic cortical neuron CL4023013
    CSI 5.48
    rCSI 32.26%
    PRS 21.35
  • alpha-beta T cell CL0000789
    CSI 5.33
    rCSI 6.25%
    PRS 44.88
  • hepatic stellate cell CL0000632
    CSI 5.18
    rCSI 19.39%
    PRS 27.31
  • neuroblast (sensu Nematoda and Protostomia) CL0000338
    CSI 5.04
    rCSI 5.82%
    PRS 28.13
  • vascular leptomeningeal cell CL4023051
    CSI 5.01
    rCSI 8.77%
    PRS 25.88
  • CD16-negative, CD56-bright natural killer cell, human CL0000938
    CSI 4.89
    rCSI 3.67%
    PRS 67.6
  • erythrocyte CL0000232
    CSI 4.69
    rCSI 10.65%
    PRS 38.9
  • CD4-positive, alpha-beta thymocyte CL0000810
    CSI 4.39
    rCSI 3.51%
    PRS 52.5
  • Langerhans cell CL0000453
    CSI 4.24
    rCSI 6.47%
    PRS 50
  • CD8-positive, alpha-beta memory T cell, CD45RO-positive CL0001203
    CSI 4.15
    rCSI 5.03%
    PRS 33.58
  • dopaminergic neuron CL0000700
    CSI 4.08
    rCSI 23.04%
    PRS 21.34
  • elicited macrophage CL0000861
    CSI 4.07
    rCSI 3.74%
    PRS 38.1
  • CD8-positive, alpha-beta thymocyte CL0000811
    CSI 3.96
    rCSI 6.17%
    PRS 59.79
  • caudal ganglionic eminence derived cortical interneuron CL4023064
    CSI 3.91
    rCSI 6.91%
    PRS 19.65
  • central nervous system macrophage CL0000878
    CSI 3.91
    rCSI 12.95%
    PRS 34.83
  • amacrine cell CL0000561
    CSI 3.85
    rCSI 11.15%
    PRS 25.75
  • neuroblast (sensu Vertebrata) CL0000031
    CSI 3.8
    rCSI 4.88%
    PRS 30.76
  • blood vessel smooth muscle cell CL0019018
    CSI 3.65
    rCSI 29.66%
    PRS 29.38
  • choroid plexus epithelial cell CL0000706
    CSI 3.6
    rCSI 5.9%
    PRS 25.25
  • naive T cell CL0000898
    CSI 3.57
    rCSI 2.48%
    PRS 43.55
  • CD4-positive, alpha-beta memory T cell CL0000897
    CSI 3.57
    rCSI 2.56%
    PRS 43.07
  • CD8-positive, alpha-beta memory T cell CL0000909
    CSI 3.57
    rCSI 3.72%
    PRS 66.45
  • CD4-positive helper T cell CL0000492
    CSI 3.56
    rCSI 2.69%
    PRS 42.97
  • microglial cell CL0000129
    CSI 3.53
    rCSI 14.22%
    PRS 47.62
  • activated type II NK T cell CL0000931
    CSI 3.42
    rCSI 3.85%
    PRS 47.45
  • lamp5 GABAergic cortical interneuron CL4023011
    CSI 3.32
    rCSI 5.57%
    PRS 20.28
  • activated CD8-positive, alpha-beta T cell, human CL0001049
    CSI 3.26
    rCSI 5.58%
    PRS 53.41
  • naive thymus-derived CD8-positive, alpha-beta T cell CL0000900
    CSI 3.22
    rCSI 2.26%
    PRS 58.7
  • chandelier pvalb GABAergic cortical interneuron CL4023036
    CSI 3.18
    rCSI 9.96%
    PRS 22.96
  • myeloid leukocyte CL0000766
    CSI 3.14
    rCSI 2.9%
    PRS 33.25
  • pulmonary artery endothelial cell CL1001568
    CSI 3.13
    rCSI 4.25%
    PRS 44.51
  • CD16-positive, CD56-dim natural killer cell, human CL0000939
    CSI 3.11
    rCSI 2.07%
    PRS 60.55
  • intermediate monocyte CL0002393
    CSI 3.09
    rCSI 4.66%
    PRS 33.25
  • vascular associated smooth muscle cell CL0000359
    CSI 3.08
    rCSI 9.98%
    PRS 36.41
  • epithelial cell of proximal tubule CL0002306
    CSI 3.06
    rCSI 7.48%
    PRS 30.21
  • medium spiny neuron CL1001474
    CSI 2.97
    rCSI 25.63%
    PRS 21.31
  • double negative thymocyte CL0002489
    CSI 2.96
    rCSI 2.06%
    PRS 38.75
  • granulocyte CL0000094
    CSI 2.92
    rCSI 4.47%
    PRS 40.35
  • adipocyte CL0000136
    CSI 2.91
    rCSI 3.74%
    PRS 30.18
  • direct pathway medium spiny neuron CL4023026
    CSI 2.91
    rCSI 69.59%
    PRS 19.61
  • promyelocyte CL0000836
    CSI 2.87
    rCSI 4.14%
    PRS 41.82
  • effector CD8-positive, alpha-beta T cell CL0001050
    CSI 2.83
    rCSI 2.15%
    PRS 41.69
  • indirect pathway medium spiny neuron CL4023029
    CSI 2.82
    rCSI 68.09%
    PRS 20.38
  • endothelial cell of vascular tree CL0002139
    CSI 2.74
    rCSI 14.97%
    PRS 39.77
  • hematopoietic precursor cell CL0008001
    CSI 2.7
    rCSI 2.77%
    PRS 48.21
  • kidney interstitial alternatively activated macrophage CL1000695
    CSI 2.69
    rCSI 7.01%
    PRS 31.15
  • perivascular cell CL4033054
    CSI 2.6
    rCSI 3.55%
    PRS 35.97
  • activated CD8-positive, alpha-beta T cell CL0000906
    CSI 2.56
    rCSI 2.52%
    PRS 64.17
  • microcirculation associated smooth muscle cell CL0008035
    CSI 2.48
    rCSI 7.18%
    PRS 35
  • retinal rod cell CL0000604
    CSI 2.47
    rCSI 4.35%
    PRS 31.32
  • lung neuroendocrine cell CL1000223
    CSI 2.41
    rCSI 3.57%
    PRS 36.29
  • enteroglial cell CL4040002
    CSI 2.4
    rCSI 12.6%
    PRS 43.76
  • central memory CD4-positive, alpha-beta T cell CL0000904
    CSI 2.38
    rCSI 1.41%
    PRS 44.44
  • renal beta-intercalated cell CL0002201
    CSI 2.35
    rCSI 5.61%
    PRS 35.17
  • megakaryocyte CL0000556
    CSI 2.33
    rCSI 10.11%
    PRS 48.63
  • interneuron CL0000099
    CSI 2.32
    rCSI 4.65%
    PRS 24.38
  • mature astrocyte CL0002627
    CSI 2.29
    rCSI 9.75%
    PRS 32.47
  • near-projecting glutamatergic cortical neuron CL4023012
    CSI 2.27
    rCSI 8.56%
    PRS 21.08
  • pvalb GABAergic cortical interneuron CL4023018
    CSI 2.26
    rCSI 2.81%
    PRS 19.1
  • contractile cell CL0000183
    CSI 2.26
    rCSI 6.67%
    PRS 31.17
  • L6b glutamatergic cortical neuron CL4023038
    CSI 2.26
    rCSI 7.06%
    PRS 21.24
  • activated CD4-positive, alpha-beta T cell CL0000896
    CSI 2.23
    rCSI 2.06%
    PRS 52.04
  • CD4-positive, alpha-beta cytotoxic T cell CL0000934
    CSI 2.23
    rCSI 3.06%
    PRS 53.19
  • retinal ganglion cell CL0000740
    CSI 2.22
    rCSI 4.91%
    PRS 23.44
  • alveolar type 1 fibroblast cell CL4028004
    CSI 2.22
    rCSI 2.43%
    PRS 35.59
  • helper T cell CL0000912
    CSI 2.21
    rCSI 3.12%
    PRS 42.11
  • lung secretory cell CL1000272
    CSI 2.19
    rCSI 5.42%
    PRS 30.41
  • Mueller cell CL0000636
    CSI 2.16
    rCSI 4.94%
    PRS 27.64
  • astrocyte of the cerebral cortex CL0002605
    CSI 2.13
    rCSI 4.78%
    PRS 20.82
  • cardiac neuron CL0010022
    CSI 2.13
    rCSI 6.81%
    PRS 28.98
  • alveolar macrophage CL0000583
    CSI 2.09
    rCSI 3.45%
    PRS 37.02
  • group 3 innate lymphoid cell CL0001071
    CSI 2.07
    rCSI 1.55%
    PRS 34.55
  • kidney distal convoluted tubule epithelial cell CL1000849
    CSI 0.2
    rCSI 2.5%
    PRS 36.3%
  • vein endothelial cell of respiratory system CL4033008
    CSI 0.2
    rCSI 1.7%
    PRS 52.9%
  • retinal cone cell CL0000573
    CSI 0.3
    rCSI 0.5%
    PRS 25.1%
  • effector memory CD8-positive, alpha-beta T cell, terminally differentiated CL0001062
    CSI 0.3
    rCSI 1.4%
    PRS 41.4%
  • cytotoxic T cell CL0000910
    CSI 0.4
    rCSI 2.2%
    PRS 44.3%
  • eosinophil CL0000771
    CSI 0.5
    rCSI 3.0%
    PRS 65.0%
  • regular atrial cardiac myocyte CL0002129
    CSI 0.5
    rCSI 1.5%
    PRS 32.7%
  • mature alpha-beta T cell CL0000791
    CSI 0.5
    rCSI 1.7%
    PRS 50.3%
  • myeloid dendritic cell, human CL0001057
    CSI 0.5
    rCSI 3.1%
    PRS 68.2%
  • central nervous system neuron CL2000029
    CSI 0.6
    rCSI 4.1%
    PRS 22.4%
  • L2/3 intratelencephalic projecting glutamatergic neuron CL4030059
    CSI 0.6
    rCSI 1.3%
    PRS 25.1%
  • L5/6 near-projecting glutamatergic neuron CL4030067
    CSI 0.6
    rCSI 1.9%
    PRS 23.7%
  • CD14-positive, CD16-negative classical monocyte CL0002057
    CSI 0.6
    rCSI 3.7%
    PRS 58.8%
  • stromal cell CL0000499
    CSI 0.6
    rCSI 1.8%
    PRS 35.8%
  • colon macrophage CL0009038
    CSI 0.7
    rCSI 3.0%
    PRS 55.6%
  • primitive red blood cell CL0002355
    CSI 0.7
    rCSI 3.6%
    PRS 47.6%
  • lymphoid lineage restricted progenitor cell CL0000838
    CSI 0.7
    rCSI 2.7%
    PRS 50.5%
  • L4 intratelencephalic projecting glutamatergic neuron CL4030063
    CSI 0.7
    rCSI 1.7%
    PRS 23.9%
  • hematopoietic multipotent progenitor cell CL0000837
    CSI 0.7
    rCSI 1.8%
    PRS 47.9%
  • tissue-resident macrophage CL0000864
    CSI 0.7
    rCSI 3.5%
    PRS 53.4%
  • regular ventricular cardiac myocyte CL0002131
    CSI 0.8
    rCSI 4.9%
    PRS 26.4%
  • podocyte CL0000653
    CSI 0.8
    rCSI 3.6%
    PRS 31.0%
  • IgG plasma cell CL0000985
    CSI 0.8
    rCSI 1.0%
    PRS 50.5%
  • granulocyte monocyte progenitor cell CL0000557
    CSI 0.8
    rCSI 0.7%
    PRS 35.5%
  • placental villous trophoblast CL2000060
    CSI 0.9
    rCSI 1.3%
    PRS 30.5%
  • macroglial cell CL0000126
    CSI 0.9
    rCSI 2.2%
    PRS 37.4%
  • erythroid progenitor cell CL0000038
    CSI 0.9
    rCSI 4.9%
    PRS 43.3%
  • mesangial cell CL0000650
    CSI 0.9
    rCSI 3.5%
    PRS 43.6%
  • erythroblast CL0000765
    CSI 0.9
    rCSI 2.4%
    PRS 45.3%
  • central memory CD8-positive, alpha-beta T cell CL0000907
    CSI 0.9
    rCSI 0.6%
    PRS 40.2%
  • cardiac muscle cell CL0000746
    CSI 0.9
    rCSI 1.3%
    PRS 25.6%
  • smooth muscle cell of the pulmonary artery CL0002591
    CSI 0.9
    rCSI 7.1%
    PRS 57.6%
  • effector memory CD4-positive, alpha-beta T cell CL0000905
    CSI 0.9
    rCSI 1.3%
    PRS 61.1%
  • keratocyte CL0002363
    CSI 1.0
    rCSI 2.3%
    PRS 43.3%
  • intraepithelial lymphocyte CL0002496
    CSI 1.0
    rCSI 2.6%
    PRS 75.6%
  • transitional stage B cell CL0000818
    CSI 1.0
    rCSI 3.2%
    PRS 66.4%
  • GABAergic neuron CL0000617
    CSI 1.0
    rCSI 3.3%
    PRS 24.0%
  • lung ciliated cell CL1000271
    CSI 1.0
    rCSI 1.2%
    PRS 24.3%
  • erythroid lineage cell CL0000764
    CSI 1.0
    rCSI 6.5%
    PRS 55.6%
  • kidney connecting tubule epithelial cell CL1000768
    CSI 1.0
    rCSI 2.6%
    PRS 25.1%
  • exhausted T cell CL0011025
    CSI 1.1
    rCSI 17.7%
    PRS 70.4%
  • effector CD4-positive, alpha-beta T cell CL0001044
    CSI 1.1
    rCSI 3.1%
    PRS 47.0%
  • mature B cell CL0000785
    CSI 1.1
    rCSI 1.0%
    PRS 39.8%
  • Bergmann glial cell CL0000644
    CSI 1.1
    rCSI 1.5%
    PRS 30.8%
  • retinal pigment epithelial cell CL0002586
    CSI 1.1
    rCSI 2.2%
    PRS 32.6%
  • luminal epithelial cell of mammary gland CL0002326
    CSI 1.1
    rCSI 2.0%
    PRS 47.0%
  • memory T cell CL0000813
    CSI 1.1
    rCSI 2.2%
    PRS 62.2%
  • common dendritic progenitor CL0001029
    CSI 1.1
    rCSI 1.4%
    PRS 40.6%
  • extravillous trophoblast CL0008036
    CSI 1.1
    rCSI 1.4%
    PRS 28.7%
  • dendritic cell, human CL0001056
    CSI 1.1
    rCSI 1.7%
    PRS 37.9%
  • kidney loop of Henle thin ascending limb epithelial cell CL1001107
    CSI 1.2
    rCSI 3.0%
    PRS 29.5%
  • T-helper 1 cell CL0000545
    CSI 1.2
    rCSI 2.2%
    PRS 61.3%
  • mesenchymal stem cell of adipose tissue CL0002570
    CSI 1.2
    rCSI 6.8%
    PRS 56.5%
  • adventitial cell CL0002503
    CSI 1.2
    rCSI 2.9%
    PRS 43.8%
  • megakaryocyte-erythroid progenitor cell CL0000050
    CSI 1.2
    rCSI 1.1%
    PRS 29.5%
  • class switched memory B cell CL0000972
    CSI 1.2
    rCSI 0.9%
    PRS 49.7%
  • hepatic pit cell CL2000054
    CSI 1.3
    rCSI 17.2%
    PRS 78.3%
  • hepatocyte CL0000182
    CSI 1.3
    rCSI 2.2%
    PRS 30.4%
  • common lymphoid progenitor CL0000051
    CSI 1.3
    rCSI 1.7%
    PRS 54.3%
  • alternatively activated macrophage CL0000890
    CSI 1.3
    rCSI 1.6%
    PRS 45.2%
  • retina horizontal cell CL0000745
    CSI 1.3
    rCSI 2.0%
    PRS 29.9%
  • CD14-positive, CD16-positive monocyte CL0002397
    CSI 1.3
    rCSI 1.7%
    PRS 43.9%
  • CD1c-positive myeloid dendritic cell CL0002399
    CSI 1.3
    rCSI 1.6%
    PRS 38.3%
  • GABAergic amacrine cell CL4030027
    CSI 1.3
    rCSI 4.5%
    PRS 27.2%
  • germinal center B cell CL0000844
    CSI 1.3
    rCSI 3.9%
    PRS 57.5%
  • chondrocyte CL0000138
    CSI 1.4
    rCSI 2.2%
    PRS 27.2%
  • mast cell CL0000097
    CSI 1.4
    rCSI 3.0%
    PRS 70.3%
  • platelet CL0000233
    CSI 1.4
    rCSI 5.7%
    PRS 44.5%
  • glutamatergic neuron CL0000679
    CSI 1.4
    rCSI 2.8%
    PRS 29.8%
  • OFF midget ganglion cell CL4033047
    CSI 1.4
    rCSI 28.2%
    PRS 28.4%
  • enteroendocrine cell of small intestine CL0009006
    CSI 1.4
    rCSI 3.1%
    PRS 45.9%
  • BEST4+ enteroycte CL4030026
    CSI 1.4
    rCSI 1.7%
    PRS 34.4%
  • ON midget ganglion cell CL4033046
    CSI 1.5
    rCSI 29.5%
    PRS 27.2%
  • retinal blood vessel endothelial cell CL0002585
    CSI 1.5
    rCSI 2.3%
    PRS 35.0%
  • innate lymphoid cell CL0001065
    CSI 1.5
    rCSI 3.0%
    PRS 41.7%
  • parietal epithelial cell CL1000452
    CSI 1.5
    rCSI 4.0%
    PRS 27.2%
  • common myeloid progenitor CL0000049
    CSI 1.5
    rCSI 1.2%
    PRS 32.3%
  • myoepithelial cell CL0000185
    CSI 1.5
    rCSI 3.8%
    PRS 39.1%
  • tracheobronchial smooth muscle cell CL0019019
    CSI 1.5
    rCSI 2.7%
    PRS 40.0%
  • mononuclear phagocyte CL0000113
    CSI 1.5
    rCSI 3.3%
    PRS 35.9%
  • natural T-regulatory cell CL0000903
    CSI 1.5
    rCSI 2.9%
    PRS 68.4%
  • H2 horizontal cell CL0004218
    CSI 1.6
    rCSI 7.8%
    PRS 33.5%
  • conjunctival epithelial cell CL1000432
    CSI 1.6
    rCSI 2.4%
    PRS 32.6%
  • fibroblast of cardiac tissue CL0002548
    CSI 1.6
    rCSI 7.7%
    PRS 29.8%
  • effector memory CD8-positive, alpha-beta T cell CL0000913
    CSI 1.6
    rCSI 1.5%
    PRS 46.3%
  • cerebral cortex neuron CL0010012
    CSI 1.6
    rCSI 6.6%
    PRS 32.0%
  • VIP GABAergic cortical interneuron CL4023016
    CSI 1.6
    rCSI 2.0%
    PRS 20.1%
  • centrilobular region hepatocyte CL0019029
    CSI 1.7
    rCSI 4.3%
    PRS 42.8%
  • early lymphoid progenitor CL0000936
    CSI 1.7
    rCSI 1.5%
    PRS 36.6%
  • respiratory suprabasal cell CL4033048
    CSI 1.7
    rCSI 2.2%
    PRS 36.7%
  • cerebellar granule cell CL0001031
    CSI 1.7
    rCSI 2.6%
    PRS 29.9%
  • L2/3-6 intratelencephalic projecting glutamatergic neuron CL4023040
    CSI 1.8
    rCSI 4.3%
    PRS 19.7%
  • fibroblast of lung CL0002553
    CSI 1.8
    rCSI 1.7%
    PRS 32.1%
  • Schwann cell CL0002573
    CSI 1.8
    rCSI 5.1%
    PRS 33.7%
  • CD8-positive, alpha-beta cytotoxic T cell CL0000794
    CSI 1.8
    rCSI 2.1%
    PRS 51.1%
  • sst GABAergic cortical interneuron CL4023017
    CSI 1.8
    rCSI 2.3%
    PRS 21.0%
  • kidney loop of Henle thin descending limb epithelial cell CL1001111
    CSI 1.8
    rCSI 2.6%
    PRS 30.0%
  • T-helper 17 cell CL0000899
    CSI 1.8
    rCSI 1.5%
    PRS 52.6%
  • renal principal cell CL0005009
    CSI 1.9
    rCSI 4.8%
    PRS 38.2%
  • mature microglial cell CL0002629
    CSI 1.9
    rCSI 8.0%
    PRS 36.0%

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 [PIP4K2A](/details-gene/5305) encodes phosphatidylinositol-5-phosphate 4-kinase type 2 alpha, a key enzyme involved in phospholipid metabolism. This protein primarily functions as a lipid kinase, catalyzing the phosphorylation of phosphatidylinositol-5-phosphate (PtdIns5P) to generate phosphatidylinositol-4,5-bisphosphate (PtdIns(4,5)P2), a critical second messenger and structural component of cell membranes. Functional annotations link [PIP4K2A](/details-gene/5305) to a variety of essential cellular processes, including the regulation of autophagy, vesicle-mediated transport, and major signaling pathways such as PI3K/AKT and TP53. **Overall**, expression data reveals its highest significance in cells of the central nervous system, particularly [oligodendrocytes](/details-cell/CL0000128) and their precursors, suggesting a vital role in glial cell biology. It is also notably expressed in diverse cell types including endothelial, neuronal, and various immune lineages, indicating its broad importance in cellular homeostasis. ## Cellular Roles and Expression Landscape The expression profile of [PIP4K2A](/details-gene/5305) highlights its fundamental role across multiple tissues, with a pronounced significance in the central nervous system. **Overall**, the gene shows the highest cell significance index (CSI) in [oligodendrocytes](/details-cell/CL0000128) (CSI: 31.71) and [differentiation-committed oligodendrocyte precursors](/details-cell/CL4023059) (CSI: 20.28), strongly suggesting a specialized function in myelin formation and maintenance, processes heavily reliant on phosphoinositide metabolism. Beyond its primary role in glial cells, [PIP4K2A](/details-gene/5305) is significantly expressed in various other cell types, pointing to broader physiological functions. Its prominence in [blood vessel endothelial cells](/details-cell/CL0000071) (CSI: 16.71) and [renal interstitial pericytes](/details-cell/CL1001318) (CSI: 9.04) suggests a role in vascular biology and integrity. The gene also appears important for certain neuronal populations, such as [L5 extratelencephalic projecting glutamatergic cortical neurons](/details-cell/CL4023041) (CSI: 16.50). Furthermore, significant expression is observed in a wide range of immune cells, including placental macrophages ([Hofbauer cells](/details-cell/CL3000001), CSI: 16.51), [mucosal invariant T cells](/details-cell/CL0000940) (CSI: 14.41), [myeloid dendritic cells](/details-cell/CL0000782) (CSI: 12.42), [basophils](/details-cell/CL0000767) (CSI: 12.25), and [CD14-positive monocytes](/details-cell/CL0001054) (CSI: 10.51). This pattern indicates that [PIP4K2A](/details-gene/5305) may be involved in fundamental immune functions like cell signaling, migration, and autophagy-mediated antigen processing. ## Pathways and Molecular Function [PIP4K2A](/details-gene/5305) is a kinase whose primary molecular functions are [1-phosphatidylinositol-5-phosphate 4-kinase activity](/details-go/GO:0016309) and [1-phosphatidylinositol-4-phosphate 5-kinase activity](/details-go/GO:0016308). Its activity is central to the [synthesis of PIPs at the plasma membrane](/details-reactome/R-HSA-1660499) and [in the nucleus](/details-reactome/R-HSA-8847453), contributing to the pool of phosphoinositides that act as signaling molecules and docking sites for various proteins. Consistent with its enzymatic function, [PIP4K2A](/details-gene/5305) is a key component of [phospholipid metabolism](/details-reactome/R-HSA-1483257) and [intracellular signaling by second messengers](/details-reactome/R-HSA-9006925). Its role extends to the regulation of major signaling networks. Reactome pathway analysis shows its involvement in the [negative regulation of the PI3K/AKT network](/details-reactome/R-HSA-199418), a central pathway controlling cell growth, proliferation, and survival. It also plays a role in the [regulation of TP53 activity through acetylation](/details-reactome/R-HSA-6804758), linking lipid signaling to tumor suppression and cellular stress responses. Furthermore, [PIP4K2A](/details-gene/5305) is implicated in the [regulation of autophagy](/details-go/GO:0010506), including processes like [autophagosome-lysosome fusion](/details-go/GO:0061909), highlighting its importance in cellular quality control and homeostasis. This functional profile aligns well with its widespread expression in metabolically active cells and immune cells that rely on autophagy for their function. ## Research Directions The diverse expression pattern and central role of [PIP4K2A](/details-gene/5305) in lipid signaling and autophagy present several avenues for future investigation. Its functions are critical for cellular homeostasis, and its dysregulation could contribute to various pathologies, including neurodegenerative diseases, cancer, and immune disorders. Based on the available data, several testable hypotheses can be formulated: 1. **Hypothesis:** Given its exceptionally high expression in [oligodendrocytes](/details-cell/CL0000128) and its core function in producing phosphoinositides, [PIP4K2A](/details-gene/5305) is essential for the synthesis and structural integrity of the myelin sheath. Its deficiency could lead to demyelination or dysmyelination. 2. **Hypothesis:** The significant expression of [PIP4K2A](/details-gene/5305) in myeloid cells ([monocytes](/details-cell/CL0001054), [myeloid dendritic cells](/details-cell/CL0000782)) and its documented role in regulating autophagy suggest that it is a key modulator of innate immune responses, such as phagocytosis, inflammasome activation, and antigen presentation. **Experimental Approach:** To test the hypothesis regarding its role in myelination, a compelling experiment would involve a conditional knockout mouse model. Specifically, generating a model where [PIP4K2A](/details-gene/5305) is selectively deleted in oligodendrocyte precursor cells (e.g., using an Olig2-Cre or Pdgfra-CreERT2 driver line) would allow for a precise assessment of its function. The resulting phenotype could be analyzed through a combination of techniques: electron microscopy to quantify myelin sheath thickness (g-ratio), immunohistochemistry for key myelin proteins (e.g., MBP, PLP1), and behavioral tests to assess motor coordination and nerve conduction velocity. **Therapeutic Potential:** [PIP4K2A](/details-gene/5305) presents a complex but potentially valuable therapeutic target. As a kinase, it is amenable to targeting with small molecule inhibitors. In cancers characterized by aberrant PI3K/AKT signaling, inhibiting [PIP4K2A](/details-gene/5305) could represent a strategy to modulate this pathway. Conversely, in the context of demyelinating diseases like multiple sclerosis, enhancing its activity or downstream signaling could potentially support remyelination. However, its widespread expression and fundamental role in cellular physiology suggest that systemic targeting could lead to significant on-target toxicities. Therefore, therapeutic strategies would likely require cell-type-specific delivery systems or the development of highly selective allosteric modulators to minimize adverse effects.

Genular Protein ID: 2552388849

Symbol: PI42A_HUMAN

Name: 1-phosphatidylinositol 5-phosphate 4-kinase 2-alpha

UniProtKB Accession Codes:

Database IDs:

Citations:

PubMed ID: 7852364

Title: The sequence of phosphatidylinositol-4-phosphate 5-kinase defines a novel family of lipid kinases.

PubMed ID: 7852364

DOI: 10.1074/jbc.270.7.2881

PubMed ID: 7639683

Title: The cloning and sequence of the C isoform of PtdIns4P 5-kinase.

PubMed ID: 7639683

DOI: 10.1042/bj3090715

PubMed ID: 14702039

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

PubMed ID: 14702039

DOI: 10.1038/ng1285

PubMed ID: 15164054

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

PubMed ID: 15164054

DOI: 10.1038/nature02462

PubMed ID: 15489334

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

PubMed ID: 15489334

DOI: 10.1101/gr.2596504

PubMed ID: 9367159

Title: A new pathway for synthesis of phosphatidylinositol-4,5-bisphosphate.

PubMed ID: 9367159

DOI: 10.1038/36621

PubMed ID: 18364242

Title: Regulation of extranuclear PtdIns5P production by phosphatidylinositol phosphate 4-kinase 2alpha.

PubMed ID: 18364242

DOI: 10.1016/j.febslet.2008.03.022

PubMed ID: 18691976

Title: Kinase-selective enrichment enables quantitative phosphoproteomics of the kinome across the cell cycle.

PubMed ID: 18691976

DOI: 10.1016/j.molcel.2008.07.007

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: 19369195

Title: Large-scale proteomics analysis of the human kinome.

PubMed ID: 19369195

DOI: 10.1074/mcp.m800588-mcp200

PubMed ID: 19608861

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

PubMed ID: 19608861

DOI: 10.1126/science.1175371

PubMed ID: 20583997

Title: PIP4Kbeta interacts with and modulates nuclear localization of the high-activity PtdIns5P-4-kinase isoform PIP4Kalpha.

PubMed ID: 20583997

DOI: 10.1042/bj20100341

PubMed ID: 19896968

Title: Localization, regulation and function of type II phosphatidylinositol 5-phosphate 4-kinases.

PubMed ID: 19896968

DOI: 10.1016/j.advenzreg.2009.10.006

PubMed ID: 20068231

Title: Quantitative phosphoproteomics reveals widespread full phosphorylation site occupancy during mitosis.

PubMed ID: 20068231

DOI: 10.1126/scisignal.2000475

PubMed ID: 21269460

Title: Initial characterization of the human central proteome.

PubMed ID: 21269460

DOI: 10.1186/1752-0509-5-17

PubMed ID: 22223895

Title: Comparative large-scale characterisation of plant vs. mammal proteins reveals similar and idiosyncratic N-alpha acetylation features.

PubMed ID: 22223895

DOI: 10.1074/mcp.m111.015131

PubMed ID: 23186163

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

PubMed ID: 23186163

DOI: 10.1021/pr300630k

PubMed ID: 23326584

Title: A homogeneous, high-throughput assay for phosphatidylinositol 5-phosphate 4-kinase with a novel, rapid substrate preparation.

PubMed ID: 23326584

DOI: 10.1371/journal.pone.0054127

PubMed ID: 26774281

Title: The Lipid Kinase PI5P4Kbeta Is an Intracellular GTP Sensor for Metabolism and Tumorigenesis.

PubMed ID: 26774281

DOI: 10.1016/j.molcel.2015.12.011

PubMed ID: 31091439

Title: PIP4Ks Suppress Insulin Signaling through a Catalytic-Independent Mechanism.

PubMed ID: 31091439

DOI: 10.1016/j.celrep.2019.04.070

PubMed ID: 24081551

Title: Enzyme activity of the PIP4K2A gene product polymorphism that is implicated in schizophrenia.

PubMed ID: 24081551

DOI: 10.1007/s00213-013-3299-y

PubMed ID: 29353240

Title: PIP4K2A regulates intracellular cholesterol transport through modulating PI(4,5)P2 homeostasis.

PubMed ID: 29353240

DOI: 10.1194/jlr.m082149

PubMed ID: 32130941

Title: Targeting the PI5P4K Lipid Kinase Family in Cancer Using Covalent Inhibitors.

PubMed ID: 32130941

DOI: 10.1016/j.chembiol.2020.02.003

Sequence Information:

  • Length: 406
  • Mass: 46225
  • Checksum: 5BAF0A27CC9EF376
  • Sequence:
  • MATPGNLGSS VLASKTKTKK KHFVAQKVKL FRASDPLLSV LMWGVNHSIN ELSHVQIPVM 
    LMPDDFKAYS KIKVDNHLFN KENMPSHFKF KEYCPMVFRN LRERFGIDDQ DFQNSLTRSA 
    PLPNDSQARS GARFHTSYDK RYIIKTITSE DVAEMHNILK KYHQYIVECH GITLLPQFLG 
    MYRLNVDGVE IYVIVTRNVF SHRLSVYRKY DLKGSTVARE ASDKEKAKEL PTLKDNDFIN 
    EGQKIYIDDN NKKVFLEKLK KDVEFLAQLK LMDYSLLVGI HDVERAEQEE VECEENDGEE 
    EGESDGTHPV GTPPDSPGNT LNSSPPLAPG EFDPNIDVYG IKCHENSPRK EVYFMAIIDI 
    LTHYDAKKKA AHAAKTVKHG AGAEISTVNP EQYSKRFLDF IGHILT