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Details on Person UniProt:Q96T23 RSF1

Class:IdReferenceGeneProduct:246585
_chainChangeLogchain:1-1441 added on Fri February 6 2015
_displayNameUniProt:Q96T23 RSF1
_timestamp2026-02-20 22:48:42
chainchain:1-1441
checksum0FCB9499B5097A2F
commentFUNCTION Regulatory subunit of the ATP-dependent RSF-1 and RSF-5 ISWI chromatin-remodeling complexes, which form ordered nucleosome arrays on chromatin and facilitate access to DNA during DNA-templated processes such as DNA replication, transcription, and repair (PubMed:12972596, PubMed:28801535). Binds to core histones together with SMARCA5, and is required for the assembly of regular nucleosome arrays by the RSF-5 ISWI chromatin-remodeling complex (PubMed:12972596). Directly stimulates the ATPase activity of SMARCA1 and SMARCA5 in the RSF-1 and RSF-5 ISWI chromatin-remodeling complexes, respectively (PubMed:28801535). The RSF-1 ISWI chromatin remodeling complex has a lower ATP hydrolysis rate than the RSF-5 ISWI chromatin-remodeling complex (PubMed:28801535). The complexes do not have the ability to slide mononucleosomes to the center of a DNA template (PubMed:28801535). Facilitates transcription of hepatitis B virus (HBV) genes by the pX transcription activator. In case of infection by HBV, together with pX, it represses TNF induced NF-kappa-B transcription activation. Represses transcription when artificially recruited to chromatin by fusion to a heterogeneous DNA binding domain (PubMed:11788598, PubMed:11944984).SUBUNIT Component of the RSF-1 ISWI chromatin-remodeling complex at least composed of SMARCA1 and RSF1 (PubMed:28801535). Within the RSF-1 ISWI chromatin-remodeling complex interacts with SMARCA1 (PubMed:28801535). Component of the RSF-5 ISWI chromatin-remodeling complex (also called the RSF complex) at least composed of SMARCA5/SNF2H and RSF1 (PubMed:12972596, PubMed:28801535). Within the RSF-5 ISWI chromatin-remodeling complex interacts with SMARCA5/SNF2H; the interaction is direct (PubMed:12972596, PubMed:28801535). Identified in a centromere complex containing histones H2A, H2B and H4, and at least CENPA, CENPB, CENPC, CENPT, CENPN, HJURP, SUPT16H, SSRP1 and RSF1 (PubMed:27499292). Also binds the HBV pX/HBx protein, which is required to activate transcription of the viral genome (PubMed:11788598, PubMed:11944984).INTERACTION Localization is diffuse during mitosis (PubMed:12972596). Co-localizes with SMARCA5 in the nucleus (PubMed:12972596).ALTERNATIVE PRODUCTS Experimental confirmation may be lacking for some isoforms.TISSUE SPECIFICITY Ubiquitously expressed. Highly expressed in the heart, skeletal muscle, kidney and placenta (PubMed:12972596). Expressed at low levels in the brain and colon (PubMed:12972596).PTM Phosphorylated.SEQUENCE CAUTION Contaminating sequence. Potential poly-A sequence.
created[InstanceEdit:217385] Schmidt, EE, 2008-03-27 06:23:53
descriptionrecommendedName: Remodeling and spacing factor 1 shortName: Rsf-1 alternativeName: HBV pX-associated protein 8 alternativeName: Hepatitis B virus X-associated protein alternativeName: p325 subunit of RSF chromatin-remodeling complex
geneNameRSF1
HBXAP
XAP8
identifierQ96T23
isSequenceChangedFALSE
keywordAcetylation
Alternative splicing
Chromatin regulator
Coiled coil
Isopeptide bond
Metal-binding
Nucleus
Phosphoprotein
Proteomics identification
Reference proteome
Transcription
Transcription regulation
Ubl conjugation
Zinc
Zinc-finger
modified[InstanceEdit:9836292] Weiser, Joel, 2023-05-25
[InstanceEdit:9852000] Weiser, Joel, 2023-11-03
[InstanceEdit:9917590] Weiser, Joel, 2024-08-09
[InstanceEdit:9926675] Weiser, Joel, 2024-11-03
[InstanceEdit:9983091] Weiser, Joel, 2026-02-20
nameRSF1
referenceDatabase[ReferenceDatabase:2] UniProt
referenceGene[ReferenceDNASequence:9003213] ENSEMBL:ENSG00000048649 RSF1 [Homo sapiens]
secondaryIdentifierRSF1_HUMAN
Q86X86
Q9H3L8
Q9NVZ8
Q9NYU0
sequenceLength1441
species[Species:48887] Homo sapiens
(isoformParent)[ReferenceIsoform:246586] UniProt:Q96T23-2 RSF1 [Homo sapiens]
[ReferenceIsoform:246587] UniProt:Q96T23-3 RSF1 [Homo sapiens]
[ReferenceIsoform:413117] UniProt:Q96T23-1 RSF1 [Homo sapiens]
(referenceEntity)[EntityWithAccessionedSequence:606345] RSF1 [nucleoplasm] [Homo sapiens]
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No pathways have been reviewed or authored by UniProt:Q96T23 RSF1 (246585)