PRKCG

protein-coding

protein kinase C gamma, the group of C2 domain containing protein kinases

Gene summary

Protein kinase C (PKC) is a family of serine- and threonine-specific protein kinases that can be activated by calcium and second messenger diacylglycerol. PKC family members phosphorylate a wide variety of protein targets and are known to be involved in diverse cellular signaling pathways. PKC also serve as major receptors for phorbol esters, a class of tumor promoters. Each member of the PKC family has a specific expression profile and is believed to play distinct roles in cells. The protein encoded by this gene is one of the PKC family members. This protein kinase is expressed solely in the brain and spinal cord and its localization is restricted to neurons. It has been demonstrated that several neuronal functions, including long term potentiation (LTP) and long term depression (LTD), specifically require this kinase. Knockout studies in mice also suggest that this kinase may be involved in neuropathic pain development. Defects in this protein have been associated with neurodegenerative disorder spinocerebellar ataxia-14 (SCA14). Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2015]

Previous symbols:
  • PKCG
  • SCA14

MANE transcript

NM_002739.5

Inheritance

AD, AR

ClinVar variants

P:63U:201B:45

Top phenotype

Spinocerebellar ataxia 14

gnomAD constraint

pLI —, LoF o/e 0.08

Max pathogenic AF

—

Genomic locus

chr19:53,879,190-53,907,652

External References & Databases

Transcript & Mutation Effects

hg38 • Region Span ~28.5 kb
Loading mutation effect viewer...

GenCC Phenotypes & Disease Associations

Curated gene-disease validity assertions and inheritance patterns

spinocerebellar ataxia type 14STRONG

Inheritance Pattern: AD

Disease ID:MONDO:0011540

Submitter: Labcorp Genetics (formerly Invitae)

spinocerebellar ataxia type 14STRONG

Inheritance Pattern: AD

Disease ID:MONDO:0011540

Submitter: PanelApp Australia

spinocerebellar ataxia type 14DEFINITIVE

Inheritance Pattern: AD

Disease ID:MONDO:0011540

Submitter: Ambry Genetics

spinocerebellar ataxia type 14SUPPORTIVE

Inheritance Pattern: AD

Disease ID:MONDO:0011540

Submitter: Orphanet

Clinical Genomic Database (CGD)

Spinocerebellar ataxia 14AD/AR

Manifestation: Neurologic

Intervention: General

Rationale: Genetic knowledge may be beneficial related to issues such as selection of optimal supportive care, informed medical decision-making, prognostic considerations, and avoidance of unnecessary testing

Comments: Homozygosity has been described in severe cases

Refs: 10939565; 12164726; 12644968; 14694043; 14676051; 16193476; 15841389; 19561170; 21434874; 21827914; 21937992; 22675081; 23604456Source: CGD (NHGRI)

ClinVar Associated Diseases & Phenotypes

Reported disease conditions connected to PRKCG variants in ClinVar

12 Conditions Cataloged
not providedTotal: 219
Spinocerebellar ataxia type 14Total: 103
not specifiedTotal: 64
Inborn genetic diseasesTotal: 50
PRKCG-related disorderTotal: 29
Autosomal dominant cerebellar ataxiaTotal: 2
Hereditary ataxiaTotal: 2
Cerebellar ataxiaTotal: 1

ClinVar Variants & Pathogenicity by Type

Statistics based on transcript NM_002739.5. Only rare variants are included.

We include only reliable ClinVar variants with their consequences to MANE Select, MANE Plus Clinical transcripts, or transcripts with TSL equal to 1. Click a count to filter the variants table below.

Slight differences between displayed counts and ClinVar may occur due to a different transcript/consequence chosen by our variant effect predictor, or because we classify Benign/Likely benign as Likely benign and Pathogenic/Likely pathogenic as Likely pathogenic.

EffectPLPVUSLBBSum
synonymous
17
clinvar
29
clinvar
6
clinvar
52
missense
16
clinvar
44
clinvar
174
clinvar
8
clinvar
2
clinvar
244
nonsense
1
clinvar
2
clinvar
3
start loss
1
clinvar
1
frameshift
5
clinvar
5
splice donor/acceptor (+/-2bp)
2
clinvar
2
clinvar
4
Total1746201378309

Highest pathogenic variant AF is 0.00007310476

Loading ClinVar variants...

Transcript Catalog

Annotated transcript isoforms across RefSeq and Ensembl databases

Showing 4 of 13 transcripts
Transcript IDSourceProtein IDCoding ExonsMANE Status
NM_002739.5RefSeqNP_002730.118MANE Select
ENST00000263431.4EnsemblENSP00000263431.318MANE Select
NM_001316329.2RefSeqNP_001303258.119Standard
ENST00000419486.1EnsemblENSP00000387919.22Standard

Model Organisms & Knockout Phenotypes

Observed phenotypic effects in mouse and zebrafish models

Gene / ModelOrganismObserved Phenotype
prkcgDanio rerio

Structure: whole organism

Quality: viability

abnormal

Gene Ontology (GO) Annotations & Pathways

Biological processes, molecular functions, cellular components and pathways

Pathways ConsensusPathDB

  • Inflammatory mediator regulation of TRP channels - Homo sapiens (human)
  • Non-small cell lung cancer - Homo sapiens (human)
  • Focal adhesion - Homo sapiens (human)
  • mTOR signaling pathway - Homo sapiens (human)
  • Aldosterone synthesis and secretion - Homo sapiens (human)

Biological Process

  • protein phosphorylation
  • chemical synaptic transmission
  • learning or memory
  • chemosensory behavior
  • phosphorylation

Molecular Function

  • protein kinase activity
  • protein serine/threonine kinase activity
  • protein kinase C activity
  • calcium-dependent protein kinase C activity
  • protein serine/threonine/tyrosine kinase activity

Cellular Component

  • nucleus
  • cytosol
  • plasma membrane
  • cell-cell junction
  • postsynaptic density

gnomAD Constraint

Source: gnomAD

Gene type
protein_coding
Transcript type
protein_coding
Transcript
ENST00000263431
Coding exons
18
Length
28463
Individuals with no LoFs
125743
Homozygous LoFs
0
Heterozygous LoFs
5
Defined
125748
p
0.0000199
Z-ScoreObservedExpectedObserved/ExpectedMutation RateTotal Possible
Missense3.062384130.5760.00002504568
Missense (PolyPhen)48149.110.321911738
Synonymous-0.3371741681.030.00001101362
Loss of Function5.28338.30.07840.00000207408

Population LoF Frequency

PopulationCAFp-valueStatus
African00.0absent
Latino/Admixed American0.0000580.000058rare
Ashkenazi Jewish00.0absent
East Asian00.0absent
Finnish00.0absent
European (Non-Finnish)0.0000260.000026rare
South Asian00.0absent
Other00.0absent

dbNSFP Gene Annotations

Source: dbNSFP

Function
FUNCTION: Calcium-activated, phospholipid- and diacylglycerol (DAG)-dependent serine/threonine-protein kinase that plays diverse roles in neuronal cells and eye tissues, such as regulation of the neuronal receptors GRIA4/GLUR4 and GRIN1/NMDAR1, modulation of receptors and neuronal functions related to sensitivity to opiates, pain and alcohol, mediation of synaptic function and cell survival after ischemia, and inhibition of gap junction activity after oxidative stress. Binds and phosphorylates GRIA4/GLUR4 glutamate receptor and regulates its function by increasing plasma membrane-associated GRIA4 expression. In primary cerebellar neurons treated with the agonist 3,5-dihyidroxyphenylglycine, functions downstream of the metabotropic glutamate receptor GRM5/MGLUR5 and phosphorylates GRIN1/NMDAR1 receptor which plays a key role in synaptic plasticity, synaptogenesis, excitotoxicity, memory acquisition and learning. May be involved in the regulation of hippocampal long-term potentiation (LTP), but may be not necessary for the process of synaptic plasticity. May be involved in desensitization of mu-type opioid receptor-mediated G-protein activation in the spinal cord, and may be critical for the development and/or maintenance of morphine-induced reinforcing effects in the limbic forebrain. May modulate the functionality of mu-type-opioid receptors by participating in a signaling pathway which leads to the phosphorylation and degradation of opioid receptors. May also contributes to chronic morphine-induced changes in nociceptive processing. Plays a role in neuropathic pain mechanisms and contributes to the maintenance of the allodynia pain produced by peripheral inflammation. Plays an important role in initial sensitivity and tolerance to ethanol, by mediating the behavioral effects of ethanol as well as the effects of this drug on the GABA(A) receptors. During and after cerebral ischemia modulate neurotransmission and cell survival in synaptic membranes, and is involved in insulin-induced inhibition of necrosis, an important mechanism for minimizing ischemic injury. Required for the elimination of multiple climbing fibers during innervation of Purkinje cells in developing cerebellum. Is activated in lens epithelial cells upon hydrogen peroxide treatment, and phosphorylates connexin-43 (GJA1/CX43), resulting in disassembly of GJA1 gap junction plaques and inhibition of gap junction activity which could provide a protective effect against oxidative stress (By similarity). Phosphorylates p53/TP53 and promotes p53/TP53-dependent apoptosis in response to DNA damage. Involved in the phase resetting of the cerebral cortex circadian clock during temporally restricted feeding. Stabilizes the core clock component ARNTL/BMAL1 by interfering with its ubiquitination, thus suppressing its degradation, resulting in phase resetting of the cerebral cortex clock (By similarity). {ECO:0000250|UniProtKB:P63318, ECO:0000250|UniProtKB:P63319, ECO:0000269|PubMed:16377624}.;
Disease
DISEASE: Spinocerebellar ataxia 14 (SCA14) [MIM:605361]: Spinocerebellar ataxia is a clinically and genetically heterogeneous group of cerebellar disorders. Patients show progressive incoordination of gait and often poor coordination of hands, speech and eye movements, due to degeneration of the cerebellum with variable involvement of the brainstem and spinal cord. SCA14 is an autosomal dominant cerebellar ataxia (ADCA). {ECO:0000269|PubMed:12644968, ECO:0000269|PubMed:29053796}. Note=The disease is caused by mutations affecting the gene represented in this entry.;

Recessive Scores

pRec
0.715

Intolerance Scores

LoFtool
0.130
RVIS EVS
-0.71
RVIS percentile EVS
14.5

Essentials

Essential (CRISPR)
N
Essential (CRISPR2)
N
Essential (gene trap)
N
Indispensability pred.
E
Indispensability score
0.947

Gene Damage Prediction

AllRecessiveDominant
MendelianMediumMediumMedium
Primary ImmunodeficiencyMediumMediumMedium
CancerMediumMediumMedium
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