MEX3B mex-3 RNA binding family member B [Homo sapiens (human)] - Gene

Summary

Official Symbol: MEX3Bprovided by HGNC
Official Full Name: mex-3 RNA binding family member Bprovided by HGNC
Primary source: HGNC:HGNC:25297
See related: Ensembl:ENSG00000183496 MIM:611008; AllianceGenome:HGNC:25297
Gene type: protein coding
RefSeq status: REVIEWED
Organism: Homo sapiens
Lineage: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Also known as: RKHD3; MEX-3B; RNF195
Summary: This gene encodes an RNA-binding phosphoprotein that is part of the MEX3 (muscle excess 3) family of translational regulators. The encoded protein contains N-terminal nuclear export and nuclear localization signals and is exported from the cytoplasm to the nucleus. The protein binds to RNA via two KH domains and also colocalizes with MEX3A, Dcp1A decapping factor and Argonaute proteins within P (processing) bodies. [provided by RefSeq, Oct 2012]
Expression: Biased expression in testis (RPKM 20.7), endometrium (RPKM 5.5) and 7 other tissues See more
Orthologs: mouse all
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Genomic context

Location:: 15q25.2

Exon count:: 2

Annotation release	Status	Assembly	Chr	Location
RS_2024_08	current	GRCh38.p14 (GCF_000001405.40)	15	NC_000015.10 (82041778..82046018, complement)
RS_2024_08	current	T2T-CHM13v2.0 (GCF_009914755.1)	15	NC_060939.1 (79905829..79910069, complement)
RS_2024_09	previous assembly	GRCh37.p13 (GCF_000001405.25)	15	NC_000015.9 (82334119..82338359, complement)

Chromosome 15 - NC_000015.10 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Genomic Sequence:

Go to nucleotide: Graphics FASTA GenBank

Expression

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See details

Project title: HPA RNA-seq normal tissues
Description: RNA-seq was performed of tissue samples from 95 human individuals representing 27 different tissues in order to determine tissue-specificity of all protein-coding genes
BioProject: PRJEB4337
Publication: PMID 24309898
Analysis date: Wed Apr 4 07:08:55 2018

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Molecular mechanism of specific HLA-A mRNA recognition by the RNA-binding-protein hMEX3B to promote tumor immune escape.
Title: Molecular mechanism of specific HLA-A mRNA recognition by the RNA-binding-protein hMEX3B to promote tumor immune escape.
MEX3B inhibits collagen production in eosinophilic nasal polyps by downregulating epithelial cell TGFBR3 mRNA stability.
Title: MEX3B inhibits collagen production in eosinophilic nasal polyps by downregulating epithelial cell TGFBR3 mRNA stability.
he suppressed IL-37 secretion caused by a type 2 milieu can enhance Mex3B-mediated TLR3 activation and subsequent TSLP production in nasal epithelial cells and therefore promotes eosinophilic inflammation in patients with eosinophilic chronic rhinosinusitis with nasal polyps.
Title: The IL-37-Mex3B-Toll-like receptor 3 axis in epithelial cells in patients with eosinophilic chronic rhinosinusitis with nasal polyps.
MEX3B mediates resistance to cancer immunotherapy by binding to the 3' UTR of HLA-A to destabilize the HLA-A mRNA and thus downregulate HLA-A expression on the surface of tumor cells.
Title: The RNA-binding Protein MEX3B Mediates Resistance to Cancer Immunotherapy by Downregulating HLA-A Expression.
Mex3b role in the Runx3 degradation in gastric cancer.
Title: HOTAIR induces the ubiquitination of Runx3 by interacting with Mex3b and enhances the invasion of gastric cancer cells.
14-3-3 exerts combined effects on hMex-3B and acts as a major regulator of the sorting between distinct classes of RNA granules
Title: Interaction with 14-3-3 adaptors regulates the sorting of hMex-3B RNA-binding protein to distinct classes of RNA granules.

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Phenotypes

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Review eQTL and phenotype association data in this region using PheGenI

EBI GWAS Catalog

Description
A genome-wide association study of clinical symptoms of dissociation in a trauma-exposed sample. EBI GWAS Catalog EBI GWAS CatalogPubMed
Six new loci associated with body mass index highlight a neuronal influence on body weight regulation. EBI GWAS Catalog EBI GWAS CatalogPubMed

Variation

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See variants in ClinVar

See studies and variants in dbVar

See Variation Viewer (GRCh37.p13)

See Variation Viewer (GRCh38)

HIV-1 interactions

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Replication interactions

Interaction	Pubs
Knockdown of mex-3 homolog B (C. elegans) by siRNA enhances the early stages of HIV-1 replication in HeLa-CD4 cells infected with viral pseudotypes HIV89.6R and HIV8.2N	PubMed

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Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Markers

RH102949 (e-PCR)
- UniSTS:97283

RH92966 (e-PCR)
- UniSTS:85688

G31454 (e-PCR)
- UniSTS:28856

Gene Ontology Provided by GOA

Function	Evidence Code	Pubs
enables RNA binding	HDA more info	PubMed
enables RNA binding	IDA Inferred from Direct Assay more info	PubMed
enables calcium ion binding	ISS Inferred from Sequence or Structural Similarity more info
enables protein binding	IPI Inferred from Physical Interaction more info	PubMed

Process	Evidence Code	Pubs
involved_in protein autophosphorylation	ISS Inferred from Sequence or Structural Similarity more info
involved_in protein phosphorylation	ISS Inferred from Sequence or Structural Similarity more info

Component	Evidence Code	Pubs
located_in P-body	IDA Inferred from Direct Assay more info	PubMed
located_in cytosol	IDA Inferred from Direct Assay more info
located_in nucleoplasm	IDA Inferred from Direct Assay more info

General protein information

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Preferred Names: RNA-binding protein MEX3B

Names: RING finger protein 195; ring finger and KH domain containing 3

NCBI Reference Sequences (RefSeq)

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RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

mRNA and Protein(s)

NM_032246.6 → NP_115622.2 RNA-binding protein MEX3B

See identical proteins and their annotated locations for NP_115622.2

Status: REVIEWED

Source sequence(s)

AC026956

Consensus CDS

CCDS10319.1

UniProtKB/Swiss-Prot

Q4G0W1, Q6ZN04, Q8IVG2, Q9H0J0

Related

ENSP00000329918.4, ENST00000329713.5

Conserved Domains (3) summary

smart00322
Location:160 → 225

KH; K homology RNA-binding domain

cd00105
Location:67 → 127

KH-I; K homology RNA-binding domain, type I. KH binds single-stranded RNA or DNA. It is found in a wide variety of proteins including ribosomal proteins, transcription factors and post-transcriptional modifiers of mRNA. There are two different KH domains that ...

pfam13920
Location:518 → 563

zf-C3HC4_3; Zinc finger, C3HC4 type (RING finger)