Protein: Something about silencing protein 4 (Q04003)
Organism: Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast)
Function: Component of the SAS complex, a multiprotein complex that acetylates 'Lys-16' of histone H4 and 'Lys-14' of histone H3. The SAS complex is however unable to acetylate nucleosomal histones. The complex is involved in transcriptional silencing at telomeres and at HML locus. Also involved in rDNA silencing. In the complex, SAS4 is essential for histone acetyltransferase (HAT) activity of the complex.
Subcellular location: Nucleus {ECO:0000269|PubMed:11731480}.
Sequence: MGIFQSIEEANNTSERLLRSEIKNSHGEFEKFDFDTEEYEINPKRKLRLVSRINPNAGHLRKSKSCFTVDEHVDETRCQKPVMKSPFMSNVDDEIKKKRETITKMTLEIEHHELSQNIRKPTDDLLPDSTYQPYHKKMLKQENRMIQSDIVNGENEADRLSLISDRLGMLNWEVTLQKVTKINDPTDENEMETKRYQTKELIDSMLHKFESMKKKSRNLARRPASSDSLLKLVSGKDWPKIYTRIDRTFIPDYASSSDEEEEKITVEEIRERRLKKREQQCGGSIIVLLSDHQSQKGMTRFAIVAEPLRKPYLIKTSTKERNSWKNKVPTNPKKFKKAPRISTQIAVKRRREVIPLTMEVEPEVIRDIRQDTQKSMKLNVKAEEISVTETVKSKEMNALRNNAASISPTLSEKAPLGSISSCTASQISQRSSENVGAIINNINPNLAIVPSCNEKTFVKTHNGMKTNSGINILPVRKKKKV
InterPro domains: - IPR038988: Something about silencing protein 4 (family) [4-434]
- IPR016158: Cullin homology domain (domain) [91-275]
- IPR029184: Something about silencing protein 4 domain (domain) [124-220]
Interaction partners: - Histone acetyltransferase SAS2
- Something about silencing protein 5
- Histone chaperone ASF1
- Histone acetyltransferase ESA1
- SWR1-complex protein 4
- Chromatin modification-related protein YNG2
- Chromatin modification-related protein EAF1
- Actin
- Chromatin modification-related protein EAF7
- Chromatin modification-related protein EAF6
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0005488 (binding), GO:0005515 (protein binding)
Biological Process (BP): GO:0008150 (biological process), GO:0008152 (metabolic process), GO:0065007 (biological regulation), GO:0050789 (regulation of biological process), GO:0009987 (cellular process), GO:0019222 (regulation of metabolic process), GO:0006807 (nitrogen compound metabolic process), GO:0050794 (regulation of cellular process), GO:0071840 (cellular component organization or biogenesis), GO:0071704 (organic substance metabolic process), GO:0044238 (primary metabolic process), GO:1901564 (organonitrogen compound metabolic process), GO:0019538 (protein metabolic process), GO:0009889 (regulation of biosynthetic process), GO:0051171 (regulation of nitrogen compound metabolic process), GO:0060255 (regulation of macromolecule metabolic process), GO:0016043 (cellular component organization), GO:0031323 (regulation of cellular metabolic process), GO:0080090 (regulation of primary metabolic process), GO:0043170 (macromolecule metabolic process), GO:0036211 (protein modification process), GO:0043412 (macromolecule modification), GO:0010556 (regulation of macromolecule biosynthetic process), GO:0031326 (regulation of cellular biosynthetic process), GO:0006325 (chromatin organization), GO:0019219 (regulation of nucleobase-containing compound metabolic process), GO:0051252 (regulation of RNA metabolic process), GO:0010468 (regulation of gene expression), GO:2001141 (regulation of RNA biosynthetic process), GO:0006355 (regulation of DNA-templated transcription), GO:0043543 (protein acylation), GO:0018193 (peptidyl-amino acid modification), GO:0016570 (histone modification), GO:0016573 (histone acetylation), GO:0006473 (protein acetylation), GO:1903506 (regulation of nucleic acid-templated transcription), GO:0018205 (peptidyl-lysine modification), GO:0018394 (peptidyl-lysine acetylation), GO:0006475 (internal protein amino acid acetylation), GO:0018393 (internal peptidyl-lysine acetylation)
Cellular Component (CC): GO:0005575 (cellular component), GO:0032991 (protein-containing complex), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0000785 (chromatin), GO:1902494 (catalytic complex), GO:0140535 (intracellular protein-containing complex), GO:0031248 (protein acetyltransferase complex), GO:1990234 (transferase complex), GO:0043229 (intracellular organelle), GO:0000123 (histone acetyltransferase complex), GO:0043227 (membrane-bounded organelle), GO:0043228 (non-membrane-bounded organelle), GO:1902493 (acetyltransferase complex), GO:0043231 (intracellular membrane-bounded organelle), GO:1902562 (H4 histone acetyltransferase complex), GO:0043232 (intracellular non-membrane-bounded organelle), GO:0005694 (chromosome), GO:0043189 (H4/H2A histone acetyltransferase complex), GO:0005634 (nucleus), GO:0035267 (NuA4 histone acetyltransferase complex)