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FACT complexGene ontology ID
GO:0035101
Definition
An abundant nuclear complex, which was originally identified in mammalian systems as a factor required for transcription elongation on chromatin templates. The FACT complex has been shown to destablilize the interaction between the H2A/H2B dimer and the H3/H4 tetramer of the nucleosome, thus reorganizing the structure of the nucleosome. In this way, the FACT complex may play a role in DNA replication and other processes that traverse the chromatin, as well as in transcription elongation. FACT is composed of two proteins that are evolutionarily conserved in all eukaryotes and homologous to mammalian Spt16 and SSRP1. In metazoans, the SSRP1 homolog contains an HMG domain; however in fungi and protists, it does not. For example, in S. cerevisiae the Pob3 protein is homologous to SSRP1, but lacks the HMG chromatin binding domain. Instead, the yFACT complex of Spt16p and Pob3p, binds to nucleosomes where multiple copies of the HMG-domain containing protein Nhp6p have already bound, but Nhp6p does not form a stable complex with the Spt16p/Pob3p heterodimer
Synonyms
1. Facilitates chromatin transcription complex
References
1. GOC: bf
2. GOC: expert ks
3. GOC: expert ras
4. GOC: expert tf
5. GOC: krc
6. PMID 129340067. PMID 129340078. PMID 16678108
Legend
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is an element of the parent element
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is a part of the parent element
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is related to the parent element
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derives from the parent element
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at least 1 tissue/ enzyme/ localization link in this branch
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tissue/ enzyme/ localization link to BRENDA