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GeneQ18031010· pop 6· linked from 22 articles

Also known as CDLS4, HR21, HRAD21, MCD1, NXP1, SCC1, hHR21, RAD21 cohesin complex component

Double-strand-break repair protein rad21 homolog is a protein that in humans is encoded by the RAD21 gene. RAD21 (also known as Mcd1, Scc1, KIAA0078, NXP1, HR21), an essential gene, encodes a DNA double-strand break (DSB) repair protein that is evolutionarily conserved in all eukaryotes from budding yeast to humans.  RAD21 protein is a structural component of the highly conserved cohesin complex consisting of RAD21, SMC1A, SMC3, and SCC3 [ STAG1 (SA1) and STAG2 (SA2) in multicellular organisms] proteins, involved in sister chromatid cohesion.

Gene data

RAD21
Name
RAD21 cohesin complex component
Type
protein-coding
Aliases
CDLS4, HR21, HRAD21, MCD1, MGS, NXP1, SCC1, hHR21

The protein encoded by this gene is highly similar to the gene product of Schizosaccharomyces pombe rad21, a gene involved in the repair of DNA double-strand breaks, as well as in chromatid cohesion during mitosis. This protein is a nuclear phospho-protein, which becomes hyperphosphorylated in cell cycle M phase. The highly regulated association of this protein with mitotic chromatin specifically at the centromere region suggests its role in sister chromatid cohesion in mitotic cells. [provided by RefSeq, Jul 2008].

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Wikidata facts

Show 5 more facts
HomoloGene ID
38161
genomic end
116874776
genomic start
116845934
cytogenetic location
8q24.11
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Article

6 sections
Contents
  • Discovery
  • Structure
  • Interactions
  • Function
  • Notes
  • References

Double-strand-break repair protein rad21 homolog is a protein that in humans is encoded by the RAD21 gene. RAD21 (also known as Mcd1, Scc1, KIAA0078, NXP1, HR21), an essential gene, encodes a DNA double-strand break (DSB) repair protein that is evolutionarily conserved in all eukaryotes from budding yeast to humans.  RAD21 protein is a structural component of the highly conserved cohesin complex consisting of RAD21, SMC1A, SMC3, and SCC3 [ STAG1 (SA1) and STAG2 (SA2) in multicellular organisms] proteins, involved in sister chromatid cohesion.

== Discovery == rad21 was first cloned by Birkenbihl and Subramani in 1992 by complementing the radiation sensitivity of the rad21-45 mutant fission yeast, Schizosaccharomyces pombe, and the murine and human homologs of S. pombe rad21 were cloned by McKay, Troelstra, van der Spek, Kanaar, Smit, Hagemeijer, Bootsma and Hoeijmakers.  The human RAD21 (hRAD21) gene is located on the long (q) arm of chromosome 8 at position 24.11 (8q24.11).  In 1997, RAD21 was independently discovered by two groups to be a major component of the chromosomal cohesin complex, and its dissolution by the cysteine protease Separase at the metaphase to anaphase transition results in the separation of sister chromatids and chromosomal segregation.

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