REXO2 RNA exonuclease 2 [Homo sapiens (human)] - Gene

Summary

Official Symbol: REXO2provided by HGNC
Official Full Name: RNA exonuclease 2provided by HGNC
Primary source: HGNC:HGNC:17851
See related: Ensembl:ENSG00000076043 MIM:607149; AllianceGenome:HGNC:17851
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: RFN; SFN; REX2; CGI-114
Summary: This gene encodes a 3'-to-5' exonuclease specific for small (primarily 5 nucleotides or less in length) single-stranded RNA and DNA oligomers. This protein may have a role in DNA repair, replication, and recombination, and in RNA processing and degradation. It may also be involved in resistance of human cells to UV-C-induced cell death through its role in the DNA repair process. [provided by RefSeq, Nov 2011]
Expression: Ubiquitous expression in heart (RPKM 41.6), kidney (RPKM 38.9) and 25 other tissues See more
Orthologs: mouse all
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Genomic context

Location:: 11q23.2

Exon count:: 7

Annotation release	Status	Assembly	Chr	Location
RS_2024_08	current	GRCh38.p14 (GCF_000001405.40)	11	NC_000011.10 (114439467..114450279)
RS_2024_08	current	T2T-CHM13v2.0 (GCF_009914755.1)	11	NC_060935.1 (114449884..114460696)
RS_2024_09	previous assembly	GRCh37.p13 (GCF_000001405.25)	11	NC_000011.9 (114310189..114321001)

Chromosome 11 - NC_000011.10 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Genomic Sequence:

Go to nucleotide: Graphics FASTA GenBank

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

RUNX1 and REXO2 are associated with the heterogeneity and prognosis of IDH wild type lower grade glioma.
Title: RUNX1 and REXO2 are associated with the heterogeneity and prognosis of IDH wild type lower grade glioma.
Germline variant in REXO2 is a novel candidate gene in familial pheochromocytoma.
Title: Germline variant in REXO2 is a novel candidate gene in familial pheochromocytoma.
Human REXO2 controls short mitochondrial RNAs generated by mtRNA processing and decay machinery to prevent accumulation of double-stranded RNA.
Title: Human REXO2 controls short mitochondrial RNAs generated by mtRNA processing and decay machinery to prevent accumulation of double-stranded RNA.
Efficient RNA turnover by REXO2 is thus required to maintain promoter specificity and proper regulation of transcription in mammalian mitochondria.
Title: Dinucleotide Degradation by REXO2 Maintains Promoter Specificity in Mammalian Mitochondria.
This study provides the molecular basis for human Rexo2, showing how it binds and degrades nanoRNA into nucleoside monophosphates and plays a crucial role in RNA salvage pathways in mammalian mitochondria.
Title: Structural insights into nanoRNA degradation by human Rexo2.
results demonstrate that 14-3-3sigma induces cisplatin resistance in esophageal squamous cell carcinoma cells
Title: 14-3-3σ confers cisplatin resistance in esophageal squamous cell carcinoma cells via regulating DNA repair molecules.
CBY1 downregulation in CML arises from reduced protein stability upon binding to 14-3-3sigma adapter protein. The ubiquitin proteasome system UPS participates in reducing stability of CBY1 bound with 14-3-3sigma through enhanced SUMOylation.
Title: 14-3-3 Binding and Sumoylation Concur to the Down-Modulation of β-catenin Antagonist chibby 1 in Chronic Myeloid Leukemia.
Loss of 14-3-3sigma sensitizes cells to UVB. After a transient cell cycle arrest, 14-3-3sigma-deficient cells die by undergoing mitotic catastrophe.
Title: The epithelium specific cell cycle regulator 14-3-3sigma is required for preventing entry into mitosis following ultraviolet B.
REXO2 is an oligoribonuclease active in human mitochondria and present both in cytosolic and mitochondrial fractions.
Title: REXO2 is an oligoribonuclease active in human mitochondria.
Observational study of gene-disease association. (HuGE Navigator)
Title: Genetic variants in nuclear-encoded mitochondrial genes influence AIDS progression.

Submit: New GeneRIF Correction See all GeneRIFs (12)

Phenotypes

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Find tests for this gene in the NIH Genetic Testing Registry (GTR)

Review eQTL and phenotype association data in this region using PheGenI

Variation

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See variants in ClinVar

See studies and variants in dbVar

See Variation Viewer (GRCh37.p13)

See Variation Viewer (GRCh38)

Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Markers

WI-18173 (e-PCR)
- UniSTS:62499

RH103255 (e-PCR)
- UniSTS:97587

C95618 (e-PCR)
- UniSTS:23111

RH91947 (e-PCR)
- UniSTS:84308

NoName (e-PCR)
- UniSTS:486075

STS-H98169 (e-PCR)
- UniSTS:38604

STS-AA027991 (e-PCR)
- UniSTS:6893

Gene Ontology Provided by GOA

Function	Evidence Code	Pubs
enables 3'-5' exonuclease activity	IDA Inferred from Direct Assay more info	PubMed
enables 3'-5' exonuclease activity	IMP Inferred from Mutant Phenotype more info	PubMed
enables 3'-5'-DNA exonuclease activity	IDA Inferred from Direct Assay more info	PubMed
enables 3'-5'-RNA exonuclease activity	IBA Inferred from Biological aspect of Ancestor more info
enables 3'-5'-RNA exonuclease activity	IDA Inferred from Direct Assay more info	PubMed
enables 3'-5'-RNA exonuclease activity	IMP Inferred from Mutant Phenotype more info	PubMed
enables magnesium ion binding	IDA Inferred from Direct Assay more info	PubMed
enables nucleic acid binding	IEA Inferred from Electronic Annotation more info

Process	Evidence Code	Pubs
involved_in DNA metabolic process	IEA Inferred from Electronic Annotation more info
acts_upstream_of_or_within nucleobase-containing compound metabolic process	IDA Inferred from Direct Assay more info	PubMed
involved_in nucleotide metabolic process	TAS Traceable Author Statement more info	PubMed

Component	Evidence Code	Pubs
located_in cytoplasm	IDA Inferred from Direct Assay more info	PubMed
located_in focal adhesion	IDA Inferred from Direct Assay more info
located_in mitochondrial intermembrane space	IDA Inferred from Direct Assay more info	PubMed
located_in mitochondrial matrix	IDA Inferred from Direct Assay more info	PubMed
located_in mitochondrial matrix	TAS Traceable Author Statement more info
located_in mitochondrion	HTP more info	PubMed
is_active_in mitochondrion	IBA Inferred from Biological aspect of Ancestor more info
located_in mitochondrion	IDA Inferred from Direct Assay more info	PubMed
located_in nucleolus	IDA Inferred from Direct Assay more info
located_in nucleus	IDA Inferred from Direct Assay more info	PubMed

General protein information

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Preferred Names: oligoribonuclease, mitochondrial

Names: REX2, RNA exonuclease 2 homolog; RNA exonuclease 2 homolog; small fragment nuclease

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.