ADARB1

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Identifiers
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External IDsGeneCards: [1]
Orthologs
SpeciesHumanMouse
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RefSeq (mRNA)

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RefSeq (protein)

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Double-stranded RNA-specific editase 1 is an enzyme that in humans is encoded by the ADARB1 gene.[1][2][3]

Function

This gene encodes the enzyme responsible for pre-mRNA editing of the glutamate receptor subunit B by site-specific deamination of adenosines. Studies in rats found that this enzyme acted on its own pre-mRNA molecules to convert an AA dinucleotide to an AI dinucleotide which resulted in a new splice site. Alternative splicing of this gene results in several transcript variants, some of which have been characterized by the presence or absence of an ALU cassette insert and a short or long C-terminal region.[3]

ADARB1 (ADAR2) requires the small molecule inositol hexakisphosphate (IP6) for proper function.[4] ADAR2 is an A-to-I RNA-editing enzyme that mostly acts on protein-coding substrates.[5]

References

  1. Mittaz L, Scott HS, Rossier C, Seeburg PH, Higuchi M, Antonarakis SE (April 1997). "Cloning of a human RNA editing deaminase (ADARB1) of glutamate receptors that maps to chromosome 21q22.3". Genomics. 41 (2): 210–7. doi:10.1006/geno.1997.4655. PMID 9143496.
  2. Keegan LP, Leroy A, Sproul D, O'Connell MA (Feb 2004). "Adenosine deaminases acting on RNA (ADARs): RNA-editing enzymes". Genome Biology. 5 (2): 209. doi:10.1186/gb-2004-5-2-209. PMC 395743. PMID 14759252.
  3. 3.0 3.1 "Entrez Gene: ADARB1 adenosine deaminase, RNA-specific, B1 (RED1 homolog rat)".
  4. Macbeth MR, Schubert HL, Vandemark AP, Lingam AT, Hill CP, Bass BL (September 2005). "Inositol hexakisphosphate is bound in the ADAR2 core and required for RNA editing". Science. 309 (5740): 1534–9. doi:10.1126/science.1113150. PMC 1850959. PMID 16141067.
  5. Licht K, Jantsch MF (April 2016). "Rapid and dynamic transcriptome regulation by RNA editing and RNA modifications". The Journal of Cell Biology. 213 (1): 15–22. doi:10.1083/jcb.201511041. PMC 4828693. PMID 27044895.

Further reading

External links