Annotations: 7F4E

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	DHS-like NAD/FAD-binding domain	8039531	3001728	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF02146	e7f4eA1	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: DHS-like NAD/FAD-binding domain	F: PF02146	ECOD (1.6)
A	F_UNCLASSIFIED	e7f4eA2	A: few secondary structure elements	X: Rubredoxin-like	H: Rubredoxin-related	T: Rubredoxin-related	F: F_UNCLASSIFIED	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF02146	Sir2 family (SIR2)	Sir2 family	-	Family
B [auth C]	PF00125	Core histone H2A/H2B/H3/H4 (Histone)	Core histone H2A/H2B/H3/H4	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	NAD-dependent protein deacetylase HST2	NAD+ binding NAD binding binding nucleotide binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding heterocyclic compound binding small molecule binding cation binding metal ion binding NAD+ binding NAD binding binding nucleotide binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding heterocyclic compound binding small molecule binding cation binding metal ion binding deacetylase activity NAD-dependent histone deacetylase activity protein lysine deacetylase activity catalytic activity, acting on a protein hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds, in linear amides hydrolase activity hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds histone deacetylase activity histone H4K deacetylase activity histone H4K16 deacetylase activity histone modifying activity NAD-dependent protein lysine deacetylase activity catalytic activity NAD-dependent histone H4K16 deacetylase activity transferase activity	regulation of DNA recombination negative regulation of biological process regulation of mitotic recombination regulation of primary metabolic process nucleobase-containing compound metabolic process organic substance metabolic process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process negative regulation of macromolecule metabolic process negative regulation of mitotic recombination regulation of biological process DNA recombination negative regulation of metabolic process biological regulation regulation of DNA recombination negative regulation of biological process regulation of mitotic recombination regulation of primary metabolic process nucleobase-containing compound metabolic process organic substance metabolic process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process negative regulation of macromolecule metabolic process negative regulation of mitotic recombination regulation of biological process DNA recombination negative regulation of metabolic process biological regulation mitotic recombination primary metabolic process DNA metabolic process regulation of macromolecule metabolic process nucleic acid metabolic process negative regulation of DNA recombination organic cyclic compound metabolic process metabolic process negative regulation of DNA metabolic process macromolecule metabolic process regulation of metabolic process regulation of DNA metabolic process regulation of cellular process cellular biosynthetic process nucleolar chromatin organization negative regulation of cellular metabolic process protein-DNA complex organization cellular component organization chromatin organization organic substance biosynthetic process negative regulation of cellular process chromatin remodeling cellular component organization or biogenesis rDNA heterochromatin formation regulation of biosynthetic process heterochromatin formation protein-containing complex organization epigenetic regulation of gene expression cellular metabolic process regulation of cellular metabolic process gene expression macromolecule biosynthetic process negative regulation of cellular biosynthetic process regulation of cellular biosynthetic process regulation of gene expression negative regulation of gene expression nucleus organization organelle organization biosynthetic process negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process nucleolus organization facultative heterochromatin formation negative regulation of gene expression, epigenetic regulation of macromolecule biosynthetic process cellular process	intracellular anatomical structure cytoplasm cellular anatomical entity membrane-bounded organelle intracellular organelle organelle nucleus intracellular membrane-bounded organelle
B [auth C]	Histone H3	DNA binding binding organic cyclic compound binding nucleic acid binding protein heterodimerization activity protein binding protein dimerization activity structural molecule activity structural constituent of chromatin	cellular biosynthetic process RNA metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process organic substance metabolic process transcription by RNA polymerase I rRNA transcription organic substance biosynthetic process rRNA metabolic process nucleolar large rRNA transcription by RNA polymerase I cellular metabolic process primary metabolic process cellular biosynthetic process RNA metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process organic substance metabolic process transcription by RNA polymerase I rRNA transcription organic substance biosynthetic process rRNA metabolic process nucleolar large rRNA transcription by RNA polymerase I cellular metabolic process primary metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process organic cyclic compound metabolic process biosynthetic process organic cyclic compound biosynthetic process metabolic process cellular process macromolecule metabolic process regulation of cellular process regulation of primary metabolic process regulation of RNA metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of biological process biological regulation regulation of cellular metabolic process regulation of macromolecule metabolic process regulation of cellular biosynthetic process regulation of gene expression regulation of macromolecule biosynthetic process regulation of DNA-templated transcription regulation of metabolic process positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of macromolecule metabolic process positive regulation of nucleobase-containing compound metabolic process regulation of transcription by RNA polymerase I positive regulation of RNA metabolic process positive regulation of DNA-templated transcription positive regulation of biological process positive regulation of cellular metabolic process positive regulation of biosynthetic process positive regulation of transcription by RNA polymerase I positive regulation of cellular process positive regulation of RNA biosynthetic process positive regulation of cellular biosynthetic process developmental process sexual sporulation resulting in formation of a cellular spore sexual reproduction reproductive process meiotic cell cycle developmental process involved in reproduction sporulation resulting in formation of a cellular spore anatomical structure morphogenesis sexual sporulation anatomical structure formation involved in morphogenesis anatomical structure development sporulation cell cycle cellular response to stimulus global genome nucleotide-excision repair response to stimulus DNA metabolic process cellular response to stress nucleotide-excision repair DNA damage response response to stress DNA repair protein-DNA complex organization cellular component organization protein-containing complex organization chromatin organization cellular component organization or biogenesis	membrane-bounded organelle protein-containing complex intracellular anatomical structure nucleus membrane-enclosed lumen nuclear protein-containing complex transcription regulator complex intracellular membrane-bounded organelle cellular anatomical entity nucleolus intracellular organelle lumen intracellular organelle RNA polymerase I upstream activating factor complex RNA polymerase I transcription regulator complex membrane-bounded organelle protein-containing complex intracellular anatomical structure nucleus membrane-enclosed lumen nuclear protein-containing complex transcription regulator complex intracellular membrane-bounded organelle cellular anatomical entity nucleolus intracellular organelle lumen intracellular organelle RNA polymerase I upstream activating factor complex RNA polymerase I transcription regulator complex organelle lumen organelle intracellular non-membrane-bounded organelle nuclear lumen non-membrane-bounded organelle replication fork protection complex nuclear replication fork nuclear chromosome chromosome replication fork CENP-A containing chromatin protein-DNA complex nucleosome chromatin chromosomal region chromosome, centromeric core domain CENP-A containing nucleosome chromosome, centromeric region

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR026590	Sirtuin family, catalytic core domain	Domain
A	IPR017328	Sirtuin, class I	Family
A	IPR026591	Sirtuin, catalytic core small domain superfamily	Homologous Superfamily
A	IPR003000	Sirtuin family	Family
A	IPR029035	DHS-like NAD/FAD-binding domain superfamily	Homologous Superfamily
B [auth C]	IPR009072	Histone-fold	Homologous Superfamily
B [auth C]	IPR007125	Histone H2A/H2B/H3	Domain
B [auth C]	IPR000164	Histone H3/CENP-A	Family

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.