PPP1R12C

gene
On this page

Also known as DKFZP434D0412p84MBS85p85AAVS1

Summary

PPP1R12C (protein phosphatase 1 regulatory subunit 12C, HGNC:14947) is a protein-coding gene on chromosome 19q13.42, encoding Protein phosphatase 1 regulatory subunit 12C (Q9BZL4). Regulates myosin phosphatase activity.

The gene encodes a subunit of myosin phosphatase. The encoded protein regulates the catalytic activity of protein phosphatase 1 delta and assembly of the actin cytoskeleton. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene.

Source: NCBI Gene 54776 — RefSeq curated summary.

At a glance

  • Clinical variants (ClinVar): 153 total
  • MANE Select transcript: NM_017607

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:14947
Approved symbolPPP1R12C
Nameprotein phosphatase 1 regulatory subunit 12C
Location19q13.42
Locus typegene with protein product
StatusApproved
AliasesDKFZP434D0412, p84, MBS85, p85, AAVS1
Ensembl geneENSG00000125503
Ensembl biotypeprotein_coding
OMIM613245
Entrez54776

Gene structure

Transcript identifiers

Ensembl transcripts: 22 — 17 protein_coding, 5 retained_intron

ENST00000263433, ENST00000435544, ENST00000586197, ENST00000586992, ENST00000588277, ENST00000590268, ENST00000591938, ENST00000592754, ENST00000592993, ENST00000854894, ENST00000854895, ENST00000954565, ENST00000954566, ENST00000954567, ENST00000954568, ENST00000954569, ENST00000954570, ENST00000954571, ENST00000954572, ENST00000954573, ENST00000954574, ENST00000954575

RefSeq mRNA: 2 — MANE Select: NM_017607 NM_001271618, NM_017607

CCDS: CCDS12916

Canonical transcript exons

ENST00000263433 — 22 exons

ExonStartEnd
ENSE000007276095509222255092326
ENSE000011797235509244255092544
ENSE000011797305509262255092662
ENSE000011797395509278355092868
ENSE000016046965509605155096178
ENSE000016196485509529155095358
ENSE000016346645509878455098858
ENSE000016587145511266555112795
ENSE000016767775509895155099095
ENSE000016925945509466155094798
ENSE000017054725511246755112585
ENSE000017162565509626255096335
ENSE000017194025510340955103568
ENSE000017203085509586755095940
ENSE000017829195511722355117637
ENSE000017852605509544555095603
ENSE000032737395509091855091558
ENSE000034803715509434555094435
ENSE000035039495509165055091700
ENSE000035207595509315355093233
ENSE000035339645509301655093076
ENSE000036184245509185955091909

Expression profiles

Bgee: expression breadth ubiquitous, 250 present calls, max score 99.23.

FANTOM5 (CAGE): breadth ubiquitous, TPM avg 10.9362 / max 431.3695, expressed in 1794 samples.

FANTOM5 promoters (5 alternative TSS)

Promoter IDTPM avgSamples expressed
1826869.30721785
1826851.1573727
1826840.258789
1826830.144847
1826820.068226

Top tissues by expression

255 total, by Bgee expression score (0-100, higher = more expressed):

TissueAnatomy IDExpression scoreQuality
lower esophagusUBERON:001347399.23gold quality
lower esophagus muscularis layerUBERON:003583399.23gold quality
mucosa of stomachUBERON:000119999.21gold quality
esophagogastric junction muscularis propriaUBERON:003584199.18gold quality
body of uterusUBERON:000985399.09gold quality
muscle layer of sigmoid colonUBERON:003580599.09gold quality
apex of heartUBERON:000209899.04gold quality
left testisUBERON:000453398.81gold quality
endocervixUBERON:000045898.80gold quality
right testisUBERON:000453498.79gold quality
left uterine tubeUBERON:000130398.78gold quality
lower esophagus mucosaUBERON:003583498.67gold quality
popliteal arteryUBERON:000225098.59gold quality
tibial arteryUBERON:000761098.59gold quality
right coronary arteryUBERON:000162598.51gold quality
right hemisphere of cerebellumUBERON:001489098.46gold quality
aortaUBERON:000094798.41gold quality
ectocervixUBERON:001224998.41gold quality
adenohypophysisUBERON:000219698.39gold quality
right frontal lobeUBERON:000281098.38gold quality
left coronary arteryUBERON:000162698.37gold quality
right atrium auricular regionUBERON:000663198.32gold quality
ascending aortaUBERON:000149698.31gold quality
thoracic aortaUBERON:000151598.28gold quality
granulocyteCL:000009498.27gold quality
heart left ventricleUBERON:000208498.25gold quality
cerebellar hemisphereUBERON:000224598.17gold quality
cerebellar cortexUBERON:000212998.15gold quality
metanephros cortexUBERON:001053398.14gold quality
small intestine Peyer’s patchUBERON:000345498.13gold quality

Single-cell (SCXA)

Detected in 1 experiment(s), a significant marker in 1.

ExperimentMarker?Max mean expression
E-ANND-3yes6.58

Regulation

Is transcription factor: no

miRNA regulators (miRDB)

28 targeting PPP1R12C, top 30 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific):

miRNAMax scoreAvg scoremiRNA target_count
HSA-MIR-32-5P99.9875.211964
HSA-MIR-92A-3P99.9875.211960
HSA-MIR-92B-3P99.9875.251955
HSA-MIR-25-3P99.9874.601817
HSA-MIR-363-3P99.9874.721821
HSA-MIR-367-3P99.9874.831819
HSA-MIR-3121-3P99.8271.963630
HSA-MIR-3934-3P99.7665.511351
HSA-MIR-149-3P99.7268.223963
HSA-MIR-891B99.5969.811083
HSA-MIR-486-3P99.5166.821901
HSA-MIR-3191-3P99.4563.94356
HSA-MIR-135A-5P99.3671.851601
HSA-MIR-135B-5P99.3671.631613
HSA-MIR-4999-5P99.3569.15926
HSA-MIR-5589-3P99.2968.301443
HSA-MIR-196A-3P99.1967.341204
HSA-MIR-6852-5P99.1766.692073
HSA-MIR-6815-3P99.1368.981530
HSA-MIR-3688-5P99.1269.671091
HSA-MIR-6811-3P98.6266.54944
HSA-MIR-6764-3P98.4467.641153
HSA-MIR-6824-3P98.4467.621154
HSA-MIR-6810-5P98.2966.21975
HSA-MIR-4652-5P96.4664.22553
HSA-MIR-668-3P96.1865.80673
HSA-MIR-6805-5P95.7964.86670
HSA-MIR-428192.9163.60271

Literature-anchored findings (GeneRIF, showing 3)

  • M-RIP can assemble a complex containing both RhoA and Myosin phosphatase myosin binding subunit, suggesting that M-RIP may play a role in myosin phosphatase regulation by RhoA (PMID:14506264)
  • Authors demonstrate that Rep proteins of adeno-associated virus serotype 2 efficiently repress expression from the target site PPP1R12C promoter. (PMID:24829354)
  • PPP1R12C Promotes Atrial Hypocontractility in Atrial Fibrillation. (PMID:37737016)

Cross-species orthologs

3 orthologs

OrganismSymbolGene ID
danio_rerioppp1r12cENSDARG00000052423
mus_musculusPpp1r12cENSMUSG00000019254
rattus_norvegicusPpp1r12cENSRNOG00000053828

Paralogs (3): PPP1R12A (ENSG00000058272), PPP1R12B (ENSG00000077157), PPP1R27 (ENSG00000182676)

Protein

Protein identifiers

Protein phosphatase 1 regulatory subunit 12CQ9BZL4 (reviewed: Q9BZL4)

Alternative names: Protein phosphatase 1 myosin-binding subunit of 85 kDa

All UniProt accessions (3): Q9BZL4, K7EL81, K7ER83

UniProt curated annotations — full annotation on UniProt →

Function. Regulates myosin phosphatase activity.

Subunit / interactions. PP1 comprises a catalytic subunit, PPP1CA, PPP1CB or PPP1CC, and one or several targeting or regulatory subunits. PPP1R12C mediates binding to myosin. Interacts via its N-terminus with PPP1CB. Interacts with IL16. Interacts with the coiled-coil domain of MPRIP. Interacts with NOD2.

Subcellular location. Cytoplasm. Cytoskeleton. Stress fiber.

Tissue specificity. Ubiquitously expressed. Highly expressed in heart.

Post-translational modifications. Phosphorylation at Thr-560 is essential for its interaction with PPP1CB.

Isoforms (5)

UniProt IDNamesCanonical?
Q9BZL4-11yes
Q9BZL4-22
Q9BZL4-33
Q9BZL4-44
Q9BZL4-55

RefSeq proteins (2): NP_001258547, NP_060077* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR002110Ankyrin_rptRepeat
IPR017401MYPT1/MYPT2/Mbs85Family
IPR031775PRKG1_interactDomain
IPR036770Ankyrin_rpt-contain_sfHomologous_superfamily
IPR051226PP1_Regulatory_SubunitFamily

Pfam: PF12796, PF15898

UniProt features (37 total): compositionally biased region 9, modified residue 9, splice variant 5, repeat 4, sequence conflict 3, region of interest 2, coiled-coil region 2, initiator methionine 1, chain 1, sequence variant 1

Structure

Experimental structures (PDB)

0 structures.

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-Q9BZL4-F166.740.34

Functional residue map

Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.

Post-translational modifications (9): 2, 399, 407, 427, 452, 509, 560, 604, 647

Function

Pathways and Gene Ontology

Reactome pathways

0 pathways

MSigDB gene sets: 113 (showing top): GGGACCA_MIR133A_MIR133B, AAGCCAT_MIR135A_MIR135B, GOBP_NEUROGENESIS, CREBP1_Q2, RACCACAR_AML_Q6, AML_Q6, IRF1_Q6, TGIF_01, GOBP_CELL_PROJECTION_ORGANIZATION, MARIADASON_REGULATED_BY_HISTONE_ACETYLATION_UP, DANG_BOUND_BY_MYC, GINESTIER_BREAST_CANCER_ZNF217_AMPLIFIED_DN, GOCC_ACTIN_FILAMENT_BUNDLE, GOCC_ACTOMYOSIN, OSF2_Q6

GO Biological Process (2): signal transduction (GO:0007165), neuron projection morphogenesis (GO:0048812)

GO Molecular Function (5): enzyme inhibitor activity (GO:0004857), myosin phosphatase regulator activity (GO:0017020), protein kinase binding (GO:0019901), protein binding (GO:0005515), phosphatase regulator activity (GO:0019208)

GO Cellular Component (3): stress fiber (GO:0001725), cytoplasm (GO:0005737), cytoskeleton (GO:0005856)

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
enzyme regulator activity2
cell communication1
cellular process1
signaling1
regulation of cellular process1
cellular response to stimulus1
neuron projection development1
plasma membrane bounded cell projection morphogenesis1
catalytic activity1
molecular function inhibitor activity1
myosin phosphatase activity1
protein phosphatase regulator activity1
kinase binding1
binding1
phosphatase activity1
phosphatase binding1
actomyosin1
contractile actin filament bundle1
intracellular anatomical structure1
cellular anatomical structure1
intracellular membraneless organelle1

Protein interactions and networks

STRING

2608 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
PPP1R12CPIK3CGP48736991
PPP1R12CMYL9P24844884
PPP1R12CIMMTQ16891847
PPP1R12CPPP1CBP37140826
PPP1R12CPIK3CDO00329822
PPP1R12CPIK3R5Q8WYR1774
PPP1R12CCDC42BPAQ5VT25700
PPP1R12CPIK3CBP42338679
PPP1R12CPIK3CAP42336552
PPP1R12CMYL12BO14950536
PPP1R12CMYL7Q01449519
PPP1R12CCLYBLQ8N0X4509
PPP1R12CPPP1R14AQ96A00506
PPP1R12CRNF112Q9ULX5505
PPP1R12CEMX1Q04741482

IntAct

92 interactions, top by confidence:

ABTypeScore
PPP1CBCCDC85Cpsi-mi:“MI:0914”(association)0.750
PPP1CBCCDC85Cpsi-mi:“MI:2364”(proximity)0.750
NUAK2PPP1R12Apsi-mi:“MI:0914”(association)0.640
VAPAFAM83Gpsi-mi:“MI:0914”(association)0.640
TNKS2PPP1R12Cpsi-mi:“MI:0915”(physical association)0.590
TNKS2PPP1R12Cpsi-mi:“MI:0407”(direct interaction)0.590
SPECC1LPPP1R12Cpsi-mi:“MI:0915”(physical association)0.560
PPP1R12CIMP3psi-mi:“MI:0915”(physical association)0.560
EHHADHPPP1R12Cpsi-mi:“MI:0915”(physical association)0.560
PPP1R12CATP6V1Hpsi-mi:“MI:0915”(physical association)0.560
BHLHA9PPP1R12Cpsi-mi:“MI:0915”(physical association)0.560
RBM17PPP1R12Cpsi-mi:“MI:0915”(physical association)0.560
EXOC3PPP1R12Cpsi-mi:“MI:0915”(physical association)0.560
CCDC185PPP1R12Cpsi-mi:“MI:0915”(physical association)0.560
THOC1PPP1R12Cpsi-mi:“MI:0915”(physical association)0.560
PPP1R12CAIRIMpsi-mi:“MI:0915”(physical association)0.560
PPP1R12CNXF1psi-mi:“MI:0915”(physical association)0.560
USHBP1PPP1R12Cpsi-mi:“MI:0915”(physical association)0.560
NOD2PPP1R12Cpsi-mi:“MI:0915”(physical association)0.550
NOD2PPP1R12Cpsi-mi:“MI:2364”(proximity)0.550
PPP1R12CNOD2psi-mi:“MI:0915”(physical association)0.550
JPH4ZSWIM8psi-mi:“MI:0914”(association)0.530
SMAD3PPP1R12Cpsi-mi:“MI:0915”(physical association)0.510
PPP1R12CSMAD3psi-mi:“MI:0915”(physical association)0.510
TSFMPPP1R12Cpsi-mi:“MI:0915”(physical association)0.490

BioGRID (76): PPP1R12C (Two-hybrid), C1orf109 (Two-hybrid), RBM17 (Two-hybrid), PPP1R12C (Affinity Capture-MS), PPP1R12C (Affinity Capture-MS), PPP1R12C (Affinity Capture-MS), PPP1R12C (Affinity Capture-MS), PPP1R12C (Two-hybrid), PPP1R12C (Affinity Capture-MS), PPP1R12C (Affinity Capture-MS), PPP1R12C (Affinity Capture-MS), PPP1R12C (Two-hybrid), PPP1R12C (Affinity Capture-Western), PPP1R12C (Affinity Capture-MS), PPP1R12C (Affinity Capture-MS)

ESM2 similar proteins: A0A0U1RR37, A1L170, A1L1I3, A1L260, A2AMM0, A4IFJ0, B5G1P1, D3ZQL6, E7F5E1, G5BQH4, O08919, O54724, O60237, O75420, P06759, P33622, P53814, P85125, Q2KI85, Q2TAL5, Q3T044, Q3UMT1, Q4RTJ5, Q4V882, Q5I1X5, Q5U2R6, Q63312, Q6NZI2, Q75AS0, Q80VC9, Q8BG95, Q8BGT6, Q8C0J6, Q8CI12, Q8IV56, Q8K382, Q8N3F8, Q8TEH3, Q8WUF5, Q91VJ2

Diamond homologs: A0A0R4IQZ2, A2AS55, A4II29, B4E2M5, C7B178, G0LXV8, L7X8P2, L7XCU0, L7XDS4, P0C0T2, P0C550, P0DJE3, P19838, P23631, P39010, Q04749, Q04861, Q0JKV1, Q10728, Q18297, Q28C34, Q337A0, Q38998, Q3SX00, Q3UMT1, Q3UX43, Q499M5, Q4JHE0, Q5H9F3, Q5R8C8, Q5U5A6, Q63369, Q68DC2, Q6FJ70, Q6GQX6, Q6NRD0, Q6NY19, Q6P6B7, Q6P9J5, Q6ZVH7

SIGNOR signaling

3 interactions.

AEffectBMechanism
PRKAA2down-regulatesPPP1R12Cphosphorylation
AMPKdown-regulatesPPP1R12Cphosphorylation
CDC42BPA“down-regulates activity”PPP1R12Cphosphorylation

Enriched among interaction partners

Reactome pathways and GO biological processes over-represented among this gene’s 65 IntAct physical interaction partners (hypergeometric vs the genome-wide background, BH-FDR, gene-set size 15–500, ranked by fold). A functional readout of the neighbourhood — distinct from this gene’s own memberships above, and biased toward well-studied / hub proteins, so read it as themes rather than proof.

Reactome pathways:

PathwayPartnersFoldFDR
SARS-CoV-1 targets host intracellular signalling and regulatory pathways7102.2×4e-11
Activation of BAD and translocation to mitochondria699.3×1e-09
Chk1/Chk2(Cds1) mediated inactivation of Cyclin B:Cdk1 complex687.6×3e-09
Activation of BH3-only proteins664.8×2e-08
RHO GTPases activate PKNs962.1×4e-12
FOXO-mediated transcription643.8×2e-07
Intrinsic Pathway for Apoptosis638.2×3e-07
SARS-CoV-1-host interactions726.7×2e-07

GO biological processes:

GO termPartnersFoldFDR
intracellular protein localization611.2×2e-03

Disease & clinical

Clinical variants and AI predictions

ClinVar

153 variants total. Per-class counts are floors (≥ shown; pagination cap):

ClassificationCount (floor)
Pathogenic0
Likely pathogenic0
Uncertain significance110
Likely benign13
Benign3

Top pathogenic / likely-pathogenic (0)

SpliceAI

3139 predictions. Top by Δscore:

VariantEffectΔscore
19:55091556:GGCC:Gacceptor_loss1.0000
19:55091558:CCTG:Cacceptor_loss1.0000
19:55091559:C:CCacceptor_gain1.0000
19:55091644:CCCCA:Cdonor_loss1.0000
19:55091645:CCCA:Cdonor_loss1.0000
19:55091646:CCA:Cdonor_loss1.0000
19:55091647:CACCT:Cdonor_loss1.0000
19:55091649:C:Adonor_loss1.0000
19:55091660:T:TAdonor_gain1.0000
19:55091698:CTC:Cacceptor_gain1.0000
19:55091699:TCC:Tacceptor_loss1.0000
19:55091701:C:CCacceptor_gain1.0000
19:55091702:T:Aacceptor_loss1.0000
19:55091706:A:ACacceptor_gain1.0000
19:55091706:A:Cacceptor_gain1.0000
19:55091853:A:ACdonor_gain1.0000
19:55091854:C:CCdonor_gain1.0000
19:55091854:CTCA:Cdonor_gain1.0000
19:55091855:TCA:Tdonor_loss1.0000
19:55091856:CACG:Cdonor_loss1.0000
19:55091857:A:ACdonor_gain1.0000
19:55091857:AC:Adonor_loss1.0000
19:55091858:C:Adonor_loss1.0000
19:55091858:C:CCdonor_gain1.0000
19:55091858:CG:Cdonor_gain1.0000
19:55091858:CGA:Cdonor_gain1.0000
19:55091858:CGAA:Cdonor_gain1.0000
19:55091858:CGAAT:Cdonor_gain1.0000
19:55091862:T:Cdonor_gain1.0000
19:55091910:C:CCacceptor_gain1.0000

AlphaMissense

4998 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
19:55099046:A:GW261R1.000
19:55099046:A:TW261R1.000
19:55112714:A:GW135R1.000
19:55112714:A:TW135R1.000
19:55091482:A:GL780P0.999
19:55091524:A:GL766P0.999
19:55099044:C:AW261C0.999
19:55099044:C:GW261C0.999
19:55103436:G:TA235D0.999
19:55103439:G:TA234D0.999
19:55112546:G:CN164K0.999
19:55112546:G:TN164K0.999
19:55112580:A:GL153P0.999
19:55112712:C:AW135C0.999
19:55112712:C:GW135C0.999
19:55112725:T:AD131V0.999
19:55112726:C:GD131H0.999
19:55112758:A:GL120S0.999
19:55112788:A:TI110N0.999
19:55112790:G:CC109W0.999
19:55112791:C:TC109Y0.999
19:55112792:A:GC109R0.999
19:55117235:G:CS103R0.999
19:55117235:G:TS103R0.999
19:55117237:T:GS103R0.999
19:55117239:A:GI102T0.999
19:55117242:C:AG101V0.999
19:55117245:T:AD100V0.999
19:55117250:G:CN98K0.999
19:55117250:G:TN98K0.999

dbSNP variants (sampled 300 via entrez): RS1000026995 (19:55113539 G>A,T), RS1000058284 (19:55113346 T>C,G), RS1000136581 (19:55107462 T>A,C), RS1000159342 (19:55092011 C>T), RS1000375481 (19:55118789 A>C), RS1000449381 (19:55099095 C>G,T), RS1000487726 (19:55107163 C>T), RS1000495902 (19:55108865 C>G), RS1000531878 (19:55117560 C>A,T), RS1000883575 (19:55098704 G>A,C,T), RS1000899492 (19:55095532 G>A,C), RS1000966341 (19:55117280 C>G,T), RS1001109406 (19:55116828 G>A,C), RS1001195589 (19:55108368 C>T), RS1001259831 (19:55107689 G>A)

Disease associations

OMIM: gene MIM:613245 | disease phenotypes:

GenCC curated gene-disease

Mondo (0):

Orphanet (0):

HPO phenotypes

0 total (0 of 0 shown, HPO-id order):

GWAS associations

0 associations (top):

Drugs & pharmacology

Drug and pharmacology data

Is drug target: no

PharmGKB: 1 entry (VIP=true, CPIC=false)

CTD chemical–gene interactions

29 total (human), top 29 by PubMed support.

ChemicalActions (top 5)PubMed papers
sodium arseniteincreases expression2
Air Pollutantsaffects expression, increases abundance, increases expression2
Benzo(a)pyreneincreases mutagenesis, decreases methylation2
Valproic Aciddecreases expression, increases expression2
Particulate Matterincreases abundance, increases expression2
aristolochic acid Iincreases expression1
FR900359increases phosphorylation1
triphenyl phosphateaffects expression1
bisphenol Aaffects cotreatment, increases methylation1
arseniteaffects binding, decreases reaction1
cobaltous chloridedecreases expression1
perfluorooctanoic aciddecreases expression1
coumarinaffects phosphorylation1
perfluorooctane sulfonic aciddecreases expression1
CGP 52608affects binding, increases reaction1
perfluoro-n-nonanoic aciddecreases expression1
K 7174increases expression1
Sunitinibincreases expression1
Fulvestrantaffects cotreatment, increases methylation1
Atrazinedecreases expression1
Vehicle Emissionsincreases abundance, increases expression1
Caffeinedecreases phosphorylation1
Doxorubicindecreases expression1
Ozoneaffects expression, increases abundance1
Smokedecreases expression1
Thiramincreases expression1
Urethaneincreases expression1
Asbestos, Serpentinedecreases methylation1
Okadaic Acidincreases expression1

Cellosaurus cell lines

4 cell lines: 4 cancer cell line

First 10 cell lines (id-ordered, not curated):

CellosaurusNameCategorySex
CVCL_TF56HAP1 PPP1R12C (-) 1Cancer cell lineMale
CVCL_TF57HAP1 PPP1R12C (-) 2Cancer cell lineMale
CVCL_TF58HAP1 PPP1R12C (-) 3Cancer cell lineMale
CVCL_TF59HAP1 PPP1R12C (-) 4Cancer cell lineMale

Clinical trials (associated diseases)

0 trials via MONDO — disease-level, not drug-specific.

No linked Atlas pages yet — the cross-entity mesh grows as the corpus expands.