FEATURES

FAMILY

DESCRIPTION

Also known as STAG1_HUMAN, STAG1, SA1, SCC3. Component of cohesin complex, a complex required for the cohesion of sister chromatids after DNA replication. The cohesin complex apparently forms a large proteinaceous ring within which sister chromatids can be trapped. At anaphase, the complex is cleaved and dissociates from chromatin, allowing sister chromatids to segregate. The cohesin complex may also play a role in spindle pole assembly during mitosis. Cohesin complexes are composed of a heterodimer between a SMC1 protein (SMC1A or SMC1B) and SMC3, which are attached via their hinge domain, and RAD21 which link them at their heads, and one STAG protein (STAG1, STAG2 or STAG3). In cohesin complexes, STAG1 is mutually exclusive with STAG2 and STAG3 (PubMed:11076961). Interacts directly with RAD21 in cohesin complex (By similarity). Found in a cohesin complex with SMC1A, SMC3 and RAD21 (PubMed:22628566).

EXTERNAL LINKS

STAG1

Cohesin subunit SA-1

STAG1

Molecular Synopsis