RNASEH1 gene

ribonuclease H1

The information on this page was automatically extracted from online scientific databases.

From NCBI Gene:

This gene encodes an endonuclease that specifically degrades the RNA of RNA-DNA hybrids and plays a key role in DNA replication and repair. Alternate in-frame start codon initiation results in the production of alternate isoforms that are directed to the mitochondria or to the nucleus. The production of the mitochondrial isoform is modulated by an upstream open reading frame (uORF). Mutations in this gene have been found in individuals with progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal recessive 2. Alternative splicing results in additional coding and non-coding transcript variants. Pseudogenes of this gene have been defined on chromosomes 2 and 17. [provided by RefSeq, Jul 2017]

From UniProt:

Endonuclease that specifically degrades the RNA of RNA-DNA hybrids (PubMed:10497183). Plays a role in RNA polymerase II (RNAp II) transcription termination by degrading R-loop RNA-DNA hybrid formation at G-rich pause sites located downstream of the poly(A) site and behind the elongating RNAp II (PubMed:21700224).

Covered on Genetics Home Reference:

From NCBI Gene:

  • Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal recessive 2

From UniProt:

Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal recessive 2 (PEOB2): A form of progressive external ophthalmoplegia, a mitochondrial myopathy characterized by progressive paralysis of the levator palpebrae, orbicularis oculi, and extraocular muscles. PEOB2 patients manifest exercise intolerance, muscle weakness, and signs and symptoms of spinocerebellar ataxia, such as impaired gait and dysarthria. Some patients may have respiratory insufficiency. [MIM:616479]

Cytogenetic Location: 2p25.3, which is the short (p) arm of chromosome 2 at position 25.3

Molecular Location: base pairs 3,531,813 to 3,558,371 on chromosome 2 (Homo sapiens Annotation Release 108, GRCh38.p7) (NCBI)

Cytogenetic Location: 2p25.3, which is the short (p) arm of chromosome 2 at position 25.3
  • H1RNA
  • PEOB2
  • RNH1