TOP3B

TOP3B
Identifiers
Aliases TOP3B, TOP3B1, topoisomerase (DNA) III beta
External IDs MGI: 1333803 HomoloGene: 2923 GeneCards: TOP3B
Orthologs
Species Human Mouse
Entrez

8940

21976

Ensembl

ENSG00000100038

ENSMUSG00000022779

UniProt

O95985

Q9Z321

RefSeq (mRNA)

NM_001282112
NM_001282113
NM_003935

NM_011624
NM_001326576

RefSeq (protein)

NP_001269041.1
NP_001269042.1
NP_003926.1

NP_035754.1

Location (UCSC) Chr 22: 21.96 – 21.98 Mb Chr 16: 16.87 – 16.89 Mb
PubMed search [1] [2]
Wikidata
View/Edit HumanView/Edit Mouse

DNA topoisomerase 3-beta-1 is an enzyme that in humans is encoded by the TOP3B gene.[3][4][5]

This gene encodes a DNA topoisomerase, an enzyme that controls and alters the topologic states of DNA during transcription. This enzyme catalyzes the transient breaking and rejoining of a single strand of DNA which allows the strands to pass through one another, thus relaxing the supercoils and altering the topology of DNA. The enzyme interacts with DNA helicase SGS1 and plays a role in DNA recombination, cellular aging and maintenance of genome stability. Alternative splicing of the C-terminus of this gene results in three transcript variants which have distinct tissue specificity; however, not all variants have been fully described.[5]

References

  1. "Human PubMed Reference:".
  2. "Mouse PubMed Reference:".
  3. Tang D, Kidd VJ (Dec 1998). "Cleavage of DFF-45/ICAD by multiple caspases is essential for its function during apoptosis". J Biol Chem. 273 (44): 28549–52. doi:10.1074/jbc.273.44.28549. PMID 9786842.
  4. Kawasaki K, Minoshima S, Nakato E, Shibuya K, Shintani A, Schmeits JL, Wang J, Shimizu N (May 1997). "One-megabase sequence analysis of the human immunoglobulin lambda gene locus". Genome Res. 7 (3): 250–61. doi:10.1101/gr.7.3.250. PMID 9074928.
  5. 1 2 "Entrez Gene: TOP3B topoisomerase (DNA) III beta".

Further reading


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