Chemicals and Drugs

AlkB Enzymes

A family of alpha- KETOGLUTARIC ACID and Fe(II)-dependent dioxygenases that are homologous to AlkB, an enzyme that repairs alkylated nucleic acids in E. coli. The mammalian homologs have diverse substrate specificities and functions that include DNA REPAIR, generating unique wobble modifications in URIDINE tRNA, demethylation of nucleotides in DNA and RNA, and demethylation of LYSINE residues on certain proteins, including ACTIN and histones (HISTONE CODE).

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A family of alpha- KETOGLUTARIC ACID and Fe(II)-dependent dioxygenases that are homologous to AlkB, an enzyme that repairs alkylated nucleic acids in E. coli. The mammalian homologs have diverse substrate specificities and functions that include DNA REPAIR, generating unique wobble modifications in URIDINE tRNA, demethylation of nucleotides in DNA and RNA, and demethylation of LYSINE residues on certain proteins, including ACTIN and histones (HISTONE CODE).

MeSH Record

Classification

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MeSH Record

Synonyms

5 entry terms
  • AlkB Homologs
  • Alkylated DNA Repair Protein AlkB Homologs
  • Alkylation Repair Homolog Proteins
  • Alkylation Repair Homologs
  • Enzymes, AlkB

MeSH Record

Aspects Covered

29 allowable subheadings

Indexed with the subheadings administration & dosage, adverse effects, analysis, antagonists & inhibitors, biosynthesis, blood, cerebrospinal fluid, chemical synthesis, chemistry, classification, deficiency, drug effects, economics, genetics, history, immunology, isolation & purification, metabolism, pharmacokinetics, pharmacology, physiology, poisoning, radiation effects, standards, supply & distribution, therapeutic use, toxicity, ultrastructure, urine.

MeSH Record

History Note

2017

MeSH Record

Previous Indexing

  • DNA Repair Enzymes (2004-2016)
  • Dioxygenases (2004-2016)

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AMA Style

References

  1. National Library of Medicine. AlkB Enzymes. Medical Subject Headings (MeSH). 2026. Unique ID D000071496. http://id.nlm.nih.gov/mesh/2026/D000071496
  2. AlkB Enzymes. In: Wikidata. https://www.wikidata.org/wiki/Q73618990