PWWP2A

gene
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Also known as KIAA1935

Summary

PWWP2A (PWWP domain containing 2A, HGNC:29406) is a protein-coding gene on chromosome 5q33.3, encoding PWWP domain-containing protein 2A (Q96N64). Chromatin-binding protein that acts as an adapter between distinct nucleosome components (H3K36me3 or H2A.Z) and chromatin-modifying complexes, contributing to the regulation of the levels of histone acetylation at actively transcribed genes.

Enables NuRD complex binding activity; chromatin binding activity; and methylated histone binding activity. Involved in chromatin remodeling. Located in nucleus.

Source: NCBI Gene 114825 — RefSeq curated summary.

At a glance

  • Clinical variants (ClinVar): 114 total — 1 likely-pathogenic
  • Cancer driver (intOGen): loss-of-function (tumor-suppressor-like) across 1 cancer types
  • MANE Select transcript: NM_001130864

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:29406
Approved symbolPWWP2A
NamePWWP domain containing 2A
Location5q33.3
Locus typegene with protein product
StatusApproved
AliasesKIAA1935
Ensembl geneENSG00000170234
Ensembl biotypeprotein_coding
OMIM617823
Entrez114825

Gene structure

Transcript identifiers

Ensembl transcripts: 7 — 4 protein_coding, 2 nonsense_mediated_decay, 1 protein_coding_CDS_not_defined

ENST00000307063, ENST00000456329, ENST00000520662, ENST00000521424, ENST00000523662, ENST00000524050, ENST00000934498

RefSeq mRNA: 6 — MANE Select: NM_001130864 NM_001130864, NM_001267035, NM_001349733, NM_001349734, NM_001349735, NM_052927

CCDS: CCDS47331, CCDS47332, CCDS58990

Canonical transcript exons

ENST00000307063 — 2 exons

ExonStartEnd
ENSE00001671969160091339160094065
ENSE00003843828160118805160119450

Expression profiles

Bgee: expression breadth ubiquitous, 254 present calls, max score 92.75.

FANTOM5 (CAGE): breadth ubiquitous, TPM avg 7.5206 / max 117.4308, expressed in 1705 samples.

FANTOM5 promoters (1 alternative TSS)

Promoter IDTPM avgSamples expressed
646167.52061705

Top tissues by expression

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

TissueAnatomy IDExpression scoreQuality
ileal mucosaUBERON:000033192.75gold quality
endothelial cellCL:000011591.49gold quality
corpus callosumUBERON:000233689.93gold quality
calcaneal tendonUBERON:000370189.20gold quality
colonic epitheliumUBERON:000039788.24gold quality
thymusUBERON:000237088.12gold quality
monocyteCL:000057687.91gold quality
leukocyteCL:000073887.83gold quality
tibialis anteriorUBERON:000138587.40silver quality
ventricular zoneUBERON:000305387.17gold quality
cerebellumUBERON:000203786.57gold quality
visceral pleuraUBERON:000240186.50gold quality
cerebellar cortexUBERON:000212986.34gold quality
cerebellar hemisphereUBERON:000224586.25gold quality
primordial germ cell in gonadCL:0000670 ∩ UBERON:000099186.20gold quality
cerebellar vermisUBERON:000472086.00gold quality
rectumUBERON:000105285.68gold quality
ganglionic eminenceUBERON:000402385.64gold quality
embryoUBERON:000092285.63gold quality
right hemisphere of cerebellumUBERON:001489085.04gold quality
bone marrow cellCL:000209284.93gold quality
upper arm skinUBERON:000426384.90gold quality
male germ line stem cell (sensu Vertebrata) in testisCL:0000089 ∩ UBERON:000047384.89gold quality
cortical plateUBERON:000534384.85gold quality
granulocyteCL:000009484.37gold quality
uterine cervixUBERON:000000284.20gold quality
adrenal tissueUBERON:001830384.19gold quality
parietal pleuraUBERON:000240084.12gold quality
pylorusUBERON:000116683.60gold quality
deltoidUBERON:000147683.47silver quality

Single-cell (SCXA)

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

ExperimentMarker?Max mean expression
E-ANND-3yes9.54

Regulation

Is transcription factor: no

miRNA regulators (miRDB)

43 targeting PWWP2A, 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-5011-5P100.0083.465820
HSA-MIR-190A-3P100.0080.355520
HSA-MIR-8485100.0077.574731
HSA-MIR-3924100.0072.092394
HSA-MIR-511-3P99.9968.851467
HSA-MIR-4789-3P99.9970.752484
HSA-MIR-1250-3P99.9670.044038
HSA-MIR-144-3P99.9473.982698
HSA-MIR-205-3P99.9269.923165
HSA-MIR-6508-5P99.9270.672465
HSA-MIR-394199.8670.542735
HSA-MIR-806799.8669.592260
HSA-MIR-132399.8369.892471
HSA-MIR-94499.8270.853042
HSA-MIR-548AG99.7769.251492
HSA-MIR-425599.7267.701541
HSA-MIR-5580-3P99.7069.412052
HSA-MIR-548AI99.6969.241494
HSA-MIR-548BA99.6969.141514
HSA-MIR-570-5P99.6969.241494
HSA-MIR-46699.6770.852863
HSA-MIR-432899.5771.064094
HSA-MIR-467299.5071.582893
HSA-MIR-6853-3P99.3670.791558
HSA-MIR-548L99.0670.902560
HSA-MIR-3190-5P98.8764.891345
HSA-MIR-6501-3P98.7167.451480
HSA-MIR-6796-3P98.6865.49689
HSA-MIR-4768-3P98.1666.022330
HSA-MIR-427597.9668.421549

Literature-anchored findings (GeneRIF, showing 4)

  • Thus, PWWP2A is a novel H2A.Z-specific multivalent chromatin binder providing a surprising link between H2A.Z, chromosome segregation, and organ development. (PMID:28645917)
  • Study in HeLa, HEK293F, and mouse embryonic stem cells reveal that loss of PWWP2A/B leads to increases in histone acetylation predominantly at highly expressed genes, accompanied by decreases in Pol II elongation. Collectively, these findings suggest a role for PWWP2A/B in regulating transcription through the fine-tuning of histone acetylation dynamics at actively transcribed genes. (PMID:30228260)
  • PWWP2A is a complex chromatin-binding protein that serves to direct the deacetylase complex M1HR to H2A.Z-containing chromatin, thereby promoting changes in histone acetylation levels.PWWP2A’s internal region binds H2A.Z nucleosomes and DNA. (PMID:30327463)
  • It has been shown that dysregulation of the circular RNA PWWP2A-miR-579 axis is involved in dexamethasone-induced cytotoxicity in human osteoblasts. (PMID:31376935)

Cross-species orthologs

4 orthologs

OrganismSymbolGene ID
danio_reriopwwp2aENSDARG00000075526
danio_rerioENSDARG00000114922
mus_musculusPwwp2aENSMUSG00000044950
rattus_norvegicusPwwp2aENSRNOG00000003936

Paralogs (4): DNMT3B (ENSG00000088305), DNMT3A (ENSG00000119772), DNMT3L (ENSG00000142182), PWWP2B (ENSG00000171813)

Protein

Protein identifiers

PWWP domain-containing protein 2AQ96N64 (reviewed: Q96N64)

All UniProt accessions (3): Q96N64, H0YB44, H0YC06

UniProt curated annotations — full annotation on UniProt →

Function. Chromatin-binding protein that acts as an adapter between distinct nucleosome components (H3K36me3 or H2A.Z) and chromatin-modifying complexes, contributing to the regulation of the levels of histone acetylation at actively transcribed genes. Competes with CHD4 and MBD3 for interaction with MTA1 to form a NuRD subcomplex, preventing the formation of full NuRD complex (containing CHD4 and MBD3), leading to recruitment of HDACs to gene promoters resulting in turn in the deacetylation of nearby H3K27 and H2A.Z. Plays a role in facilitating transcriptional elongation and repression of spurious transcription initiation through regulation of histone acetylation. Essential for proper mitosis progression.

Subunit / interactions. Component of a MTA1-specific subcomplex of the NuRD complex (M1HR), composed of PWWP2A, MTA1/2, HDAC1/2, and RBBP4/7 but does not contain CHD4 and MBD3. Interacts with MTA1; the interaction mediates the association of PWWP2A with the M1HR complex. Interacts with H2A.Z/H2AZ1. Interacts (via PWWP domain) with histone H3 trimethylated at ‘Lys-36’ (H3K36me3). Does not interact with CHD4 and MBD3. Interacts with MTA1 and with HDAC1 in a MTA1-dependent manner. Does not interact with CHD4 and MBD3. Interacts with MTA1 and with HDAC1 in a MTA1-dependent manner. Does not interact with CHD4 and MBD3.

Subcellular location. Nucleus.

Isoforms (3)

UniProt IDNamesCanonical?
Q96N64-11yes
Q96N64-22
Q96N64-33

RefSeq proteins (6): NP_001124336, NP_001253964, NP_001336662, NP_001336663, NP_001336664, NP_443159 (=MANE)

Domains & families (InterPro)

IDNameType
IPR000313PWWP_domDomain

Pfam: PF00855

UniProt features (32 total): compositionally biased region 10, region of interest 7, modified residue 4, splice variant 4, mutagenesis site 3, chain 1, domain 1, cross-link 1, sequence conflict 1

Structure

Experimental structures (PDB)

0 structures.

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-Q96N64-F158.440.17

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 (5): 81, 102, 116, 119, 208

Mutagenesis-validated functional residues (3):

PositionPhenotype
666no effect on interaction with h3k36me3.
669loss of interaction with h3k36me3.
695loss of interaction with h3k36me3.

Function

Pathways and Gene Ontology

Reactome pathways

1 pathways

IDPathway
R-HSA-9937850NuRD complex assembly

MSigDB gene sets: 136 (showing top): GOBP_REGULATION_OF_DNA_TEMPLATED_TRANSCRIPTION_INITIATION, GOBP_DNA_TEMPLATED_TRANSCRIPTION_INITIATION, GOBP_TRANSCRIPTION_INITIATION_AT_RNA_POLYMERASE_II_PROMOTER, GOBP_CHROMATIN_REMODELING, GOBP_POSITIVE_REGULATION_OF_DNA_TEMPLATED_TRANSCRIPTION_ELONGATION, GOBP_REGULATION_OF_DNA_TEMPLATED_TRANSCRIPTION_ELONGATION, GOMF_CHROMATIN_BINDING, GOMF_HISTONE_BINDING, GOBP_DNA_TEMPLATED_TRANSCRIPTION_ELONGATION, KYNG_NORMAL_AGING_DN, KYNG_WERNER_SYNDROM_DN, GOBP_POSITIVE_REGULATION_OF_TRANSCRIPTION_BY_RNA_POLYMERASE_II, GOMF_PROTEIN_CONTAINING_COMPLEX_BINDING, ARNT2_TARGET_GENES, ASH1L_TARGET_GENES

GO Biological Process (3): regulation of transcriptional start site selection at RNA polymerase II promoter (GO:0001178), chromatin remodeling (GO:0006338), positive regulation of transcription elongation by RNA polymerase II (GO:0032968)

GO Molecular Function (5): chromatin binding (GO:0003682), histone binding (GO:0042393), NuRD complex binding (GO:0120325), histone H3K36me3 reader activity (GO:0140003), protein binding (GO:0005515)

GO Cellular Component (1): nucleus (GO:0005634)

Reactome top-level categories

Rollup of top-1 pathways:

CategoryPathways
CHD3, CHD4, CHD5 subfamily1

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
binding2
transcriptional start site selection at RNA polymerase II promoter1
regulation of transcription, start site selection1
regulation of transcription initiation by RNA polymerase II1
chromatin organization1
transcription elongation by RNA polymerase II1
positive regulation of DNA-templated transcription, elongation1
regulation of transcription elongation by RNA polymerase II1
positive regulation of transcription by RNA polymerase II1
protein binding1
protein-containing complex binding1
histone H3 reader activity1
intracellular membrane-bounded organelle1

Protein interactions and networks

STRING

610 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
PWWP2AC11orf16Q9NQ32678
PWWP2AH2AZ1P0C0S5666
PWWP2ARBBP4P31149585
PWWP2AZCCHC8Q6NZY4549
PWWP2APPFIBP1Q86W92522
PWWP2AC16orf87Q6PH81498
PWWP2APHF14O94880486
PWWP2ASHTN1A0MZ66416
PWWP2ABAHD1Q8TBE0389
PWWP2AZNF296Q8WUU4386
PWWP2ACHD3Q12873370
PWWP2AZNF215Q9UL58365
PWWP2AGATAD2AQ86YP4353
PWWP2AHMGXB3Q12766345
PWWP2AG3V325G3V325339

IntAct

47 interactions, top by confidence:

ABTypeScore
HDAC1CDK2AP1psi-mi:“MI:0914”(association)0.840
HDAC1PWWP2Apsi-mi:“MI:0403”(colocalization)0.830
PWWP2AHDAC1psi-mi:“MI:0915”(physical association)0.830
RBBP4CDK2AP1psi-mi:“MI:0914”(association)0.790
HDAC1TNRC18psi-mi:“MI:0914”(association)0.790
HDAC1ZNF609psi-mi:“MI:0914”(association)0.730
RBBP7HAT1psi-mi:“MI:0914”(association)0.730
P4HA3FAM171A2psi-mi:“MI:0914”(association)0.640
PWWP2AH2BC21psi-mi:“MI:0915”(physical association)0.560
RBBP4TNRC18psi-mi:“MI:0914”(association)0.530
RBBP7EPOPpsi-mi:“MI:0914”(association)0.530
PWWP2ACOX4I1psi-mi:“MI:0915”(physical association)0.400
PWWP2ABANF1psi-mi:“MI:0915”(physical association)0.400
PWWP2AH2BC12Lpsi-mi:“MI:0915”(physical association)0.400
PWWP2AH2BC9psi-mi:“MI:0915”(physical association)0.400
Kif20aTNRC18psi-mi:“MI:0914”(association)0.350
THOC1TARS3psi-mi:“MI:0914”(association)0.350
SetZKSCAN1psi-mi:“MI:0914”(association)0.350
Mta1MTA3psi-mi:“MI:0914”(association)0.350
HDAC1TRAK1psi-mi:“MI:0914”(association)0.350
ESR1ESYT2psi-mi:“MI:0914”(association)0.350
CCP110A2ML1psi-mi:“MI:0914”(association)0.350
CCP110KIF2Apsi-mi:“MI:0914”(association)0.350
H1-0SMARCA5psi-mi:“MI:0914”(association)0.350

BioGRID (93): PWWP2A (Proximity Label-MS), PWWP2A (Affinity Capture-MS), PWWP2A (Affinity Capture-MS), PWWP2A (Affinity Capture-MS), PWWP2A (Affinity Capture-MS), PWWP2A (Affinity Capture-MS), PWWP2A (Affinity Capture-MS), PWWP2A (Affinity Capture-MS), PWWP2A (Affinity Capture-RNA), PWWP2A (Affinity Capture-MS), PWWP2A (Affinity Capture-MS), PWWP2A (Affinity Capture-MS), PLEKHF2 (Two-hybrid), PWWP2A (Proximity Label-MS), PWWP2A (Proximity Label-MS)

ESM2 similar proteins: A0A1L8GR68, A2CG63, E9Q9M8, F7AQ22, G3V8T1, O75152, O75376, P49140, P51826, P97432, Q13625, Q14596, Q17R98, Q1LY51, Q3TYA6, Q4KKX4, Q4LE39, Q4R6F6, Q501R9, Q505G8, Q5F3Z9, Q5HYC2, Q5RC94, Q5XJV7, Q60974, Q68FE8, Q69Z61, Q6A098, Q6NXK2, Q6NZF1, Q6PJT7, Q6ZNC4, Q86YI8, Q8BFU3, Q8BJ05, Q8CCH7, Q8CG79, Q8CHY6, Q8K2W6, Q8ND24

Diamond homologs: A0A1L8GR68, E9Q9M8, F7AQ22, O88508, Q1LZ53, Q4W5Z4, Q69Z61, Q6NUJ5, Q96N64, Q9FNE4, Q9UBC3, Q9Y6K1, O88509, Q923W4, Q9JMG7, Q9Y3E1, P00476, P09915, P0DOY1, P34906, Q10SU5, Q1LZ50, Q2RBJ4, Q9CWR8, Q9LXE5, Q9M548, Q9UJW3, Q9MA56, A4FUF0, F4K4D6, Q49A26, Q562D5, Q5R7T2, Q5RKH0, Q5RKN4, Q5ZLS7, Q922P9, Q9LK91, Q9LYZ0, Q9SF36

SIGNOR signaling

0 interactions.

Enriched among interaction partners

Reactome pathways and GO biological processes over-represented among this gene’s 50 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
Transcriptional regulation of brown and beige adipocyte differentiation by EBF2556.0×7e-07
NuRD complex assembly1041.5×6e-12
ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression940.3×6e-11
Interaction of NuRD complexes with transcription factors1037.3×9e-12
RNA Polymerase I Transcription Initiation532.9×8e-06
Deposition of new CENPA-containing nucleosomes at the centromere732.7×5e-08
PRC2 methylates histones and DNA731.4×6e-08
Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs)931.2×5e-10

GO biological processes:

GO termPartnersFoldFDR
regulation of stem cell differentiation587.0×4e-07
heterochromatin formation529.0×5e-05
nucleosome assembly722.3×3e-06
chromatin remodeling711.6×1e-04
chromatin organization511.3×2e-03

Disease & clinical

Cancer significance

From intOGen — cancer-driver classification: loss-of-function (tumor-suppressor-like) across 1 cancer types — STAD.

Clinical variants and AI predictions

ClinVar

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

ClassificationCount (floor)
Pathogenic0
Likely pathogenic1
Uncertain significance98
Likely benign5
Benign2

Top pathogenic / likely-pathogenic (1)

Variant IDHGVSClassification
402170NM_003314.3(TTC1):c.784T>G (p.Phe262Val)Likely pathogenic

SpliceAI

1047 predictions. Top by Δscore:

VariantEffectΔscore
5:160064931:GGTAA:Gacceptor_gain1.0000
5:160065006:G:GTdonor_gain1.0000
5:160094061:CAAAC:Cacceptor_gain1.0000
5:160094063:AAC:Aacceptor_gain1.0000
5:160094064:ACC:Aacceptor_loss1.0000
5:160094065:CCTT:Cacceptor_gain1.0000
5:160094066:C:CCacceptor_gain1.0000
5:160094067:T:Cacceptor_gain1.0000
5:160094068:T:Cacceptor_gain1.0000
5:160094068:T:TCacceptor_gain1.0000
5:160094077:A:ACacceptor_gain1.0000
5:160094077:A:Cacceptor_gain1.0000
5:160108543:A:ACdonor_gain1.0000
5:160108544:C:CCdonor_gain1.0000
5:160108544:CTG:Cdonor_gain1.0000
5:160113226:C:CTdonor_gain1.0000
5:160113232:T:Adonor_gain1.0000
5:160117827:A:ACdonor_gain1.0000
5:160117828:C:CCdonor_gain1.0000
5:160117831:ATAAG:Adonor_gain1.0000
5:160118801:GTAC:Gdonor_loss1.0000
5:160118802:TAC:Tdonor_loss1.0000
5:160118803:ACCT:Adonor_loss1.0000
5:160064926:TTACA:Tacceptor_loss0.9900
5:160064927:TACAG:Tacceptor_loss0.9900
5:160064928:ACAGG:Aacceptor_loss0.9900
5:160064929:CAGG:Cacceptor_loss0.9900
5:160064930:A:AGacceptor_gain0.9900
5:160064930:A:Cacceptor_loss0.9900
5:160064931:G:Cacceptor_loss0.9900

AlphaMissense

4920 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
5:160092444:C:GA736P1.000
5:160092446:G:TA735E1.000
5:160092447:C:GA735P1.000
5:160092458:G:TA731D1.000
5:160092465:G:TR729S1.000
5:160092467:T:CY728C1.000
5:160092468:A:CY728D1.000
5:160092468:A:GY728H1.000
5:160092474:C:GG726R1.000
5:160092478:T:AR724S1.000
5:160092478:T:GR724S1.000
5:160092490:A:CF720L1.000
5:160092490:A:TF720L1.000
5:160092491:A:GF720S1.000
5:160092492:A:GF720L1.000
5:160092502:G:CF716L1.000
5:160092502:G:TF716L1.000
5:160092503:A:GF716S1.000
5:160092504:A:GF716L1.000
5:160092514:A:CF712L1.000
5:160092514:A:TF712L1.000
5:160092515:A:GF712S1.000
5:160092516:A:GF712L1.000
5:160092545:G:AS702F1.000
5:160092562:A:CF696L1.000
5:160092562:A:TF696L1.000
5:160092563:A:GF696S1.000
5:160092564:A:GF696L1.000
5:160092565:C:AW695C1.000
5:160092565:C:GW695C1.000

dbSNP variants (sampled 300 via entrez): RS1000020090 (5:160104096 C>G), RS1000057963 (5:160095008 A>C), RS1000077920 (5:160066201 C>A,G,T), RS1000093511 (5:160044196 A>G), RS1000109032 (5:160050858 T>C), RS1000124473 (5:160044643 G>A,T), RS1000149685 (5:160087659 C>A), RS1000212147 (5:160088261 G>A), RS1000304433 (5:160082009 T>C), RS1000357346 (5:160082235 G>A,C), RS1000423761 (5:160116989 G>A), RS1000461035 (5:160046045 A>G), RS1000503008 (5:160089247 A>G), RS1000512100 (5:160047955 T>C), RS1000564017 (5:160087903 T>C,G)

Disease associations

OMIM: gene MIM:617823 | 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

22 total (human), top 22 by PubMed support.

ChemicalActions (top 5)PubMed papers
Valproic Aciddecreases expression, affects expression5
trichostatin Aaffects cotreatment, decreases expression3
Benzo(a)pyreneincreases expression, increases methylation2
Phenylmercuric Acetateaffects cotreatment, decreases expression2
FR900359affects phosphorylation1
bisphenol Faffects cotreatment, decreases expression1
TAK-243decreases sumoylation1
2-butenaldecreases expression1
CGP 52608increases reaction, affects binding1
4-(5-benzo(1,3)dioxol-5-yl-4-pyridin-2-yl-1H-imidazol-2-yl)benzamideaffects cotreatment, decreases expression1
dorsomorphinaffects cotreatment, decreases expression1
Caffeinedecreases phosphorylation1
Dexamethasoneaffects cotreatment, decreases expression1
Diethylhexyl Phthalateincreases expression1
Doxorubicindecreases expression1
Formaldehydedecreases expression1
Indomethacinaffects cotreatment, decreases expression1
Methyl Methanesulfonateincreases expression1
Phthalic Acidsincreases methylation1
Tretinoindecreases expression1
1-Methyl-3-isobutylxanthinedecreases expression, affects cotreatment1
Cyclosporineincreases expression1

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.