TOP3B
Gene Information
- Official Symbol: TOP3B
- Official Name: DNA topoisomerase III beta
- Aliases and Previous Symbols: N/A
- Entrez ID: 8940
- UniProt: O95985
- Interactions: BioGRID
- PubMed articles: Open PubMed
- OMIM: Open OMIM
Function Summary
- Entrez Summary: N/A
- UniProt Summary: Releases the supercoiling and torsional tension of DNA introduced during the DNA replication and transcription by transiently cleaving and rejoining one strand of the DNA duplex. Introduces a single-strand break via transesterification at a target site in duplex DNA. The scissile phosphodiester is attacked by the catalytic tyrosine of the enzyme, resulting in the formation of a DNA-(5'-phosphotyrosyl)-enzyme intermediate and the expulsion of a 3'-OH DNA strand. The free DNA strand than undergoes passage around the unbroken strand thus removing DNA supercoils. Finally, in the religation step, the DNA 3'-OH attacks the covalent intermediate to expel the active-site tyrosine and restore the DNA phosphodiester backbone (By similarity). Possesses negatively supercoiled DNA relaxing activity. {ECO:0000250}.
CRISPR Data
Essentiality in NALM6
- Essentiality Rank: 5460
- Expression level (log2 read counts): 6.04
TOP3B Expression in NALM6 Cells: 6.04
