Annotations: 3QMC

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	CXXC zinc-finger domain	8053010	3002156	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	zf-CXXC	e3qmcA1	A: few secondary structure elements	X: CXXC domain-like	H: CXXC domain (From Topology)	T: CXXC domain	F: zf-CXXC	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF02008	CXXC zinc finger domain (zf-CXXC)	CXXC zinc finger domain	This domain contains eight conserved cysteine residues that bind to two zinc ions. The CXXC domain is found in a variety of chromatin-associated proteins. This domain binds to nonmethyl-CpG dinucleotides. The domain is characterised by two repeats [ ...	This domain contains eight conserved cysteine residues that bind to two zinc ions. The CXXC domain is found in a variety of chromatin-associated proteins. This domain binds to nonmethyl-CpG dinucleotides. The domain is characterised by two repeats [3], and shows a peculiar internal duplication in which the second unit is inserted into the first one [4]. Each of these units is characterised by four conserved cysteines, displaying a CXXCXXCX(n)C motif that chelate a Zn+2 ion. The DNA binding interface has been identified by NMR [3]. In eukaryotes, the CXXC domain is found in stramenopiles, plants and metazoans. Plants possess a mono-CXXC domain that is present in distinct chromatin proteins [4]. Structural comparisons show that the mono-CXXC is homologous to the structural-zinc binding domain of medium chain dehydrogenases [4].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	CpG-binding protein	DNA binding sequence-specific DNA binding sequence-specific double-stranded DNA binding transcription cis-regulatory region binding binding double-stranded DNA binding organic cyclic compound binding nucleic acid binding cis-regulatory region sequence-specific DNA binding transcription regulatory region nucleic acid binding unmethylated CpG binding cation binding transition metal ion binding zinc ion binding DNA binding sequence-specific DNA binding sequence-specific double-stranded DNA binding transcription cis-regulatory region binding binding double-stranded DNA binding organic cyclic compound binding nucleic acid binding cis-regulatory region sequence-specific DNA binding transcription regulatory region nucleic acid binding unmethylated CpG binding cation binding transition metal ion binding zinc ion binding ion binding metal ion binding small molecule binding methylated histone binding protein binding modification-dependent protein binding histone binding methylation-dependent protein binding	regulation of cellular process cellular biosynthetic process RNA metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process organic substance metabolic process organic substance biosynthetic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of cellular process cellular biosynthetic process RNA metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process organic substance metabolic process organic substance biosynthetic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of biological process cellular metabolic process biological regulation primary metabolic process regulation of cellular metabolic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of cellular biosynthetic process organic cyclic compound metabolic process regulation of gene expression biosynthetic process organic cyclic compound biosynthetic process metabolic process regulation of macromolecule biosynthetic process cellular process regulation of DNA-templated transcription macromolecule metabolic process 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 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 cellular process positive regulation of RNA biosynthetic process positive regulation of cellular biosynthetic process	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle lumen intracellular organelle organelle lumen organelle nuclear periphery nuclear lumen nuclear matrix nuclear speck membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle lumen intracellular organelle organelle lumen organelle nuclear periphery nuclear lumen nuclear matrix nuclear speck nuclear body nucleoplasm protein-containing complex histone methyltransferase complex catalytic complex nuclear protein-containing complex transferase complex methyltransferase complex Set1C/COMPASS complex cytoplasm cytosol
B	5'-D(GPCPCPAPCPCPGPCPTPGPGPC)-3'	-	-	-
C	5'-D(GPCPCPAPGPCPGPGPTPGPGPC)-3'	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR001965	Zinc finger, PHD-type	Domain
A	IPR037869	Spp1/CFP1	Family
A	IPR013083	Zinc finger, RING/FYVE/PHD-type	Homologous Superfamily
A	IPR022056	CpG binding protein, C-terminal	Domain
A	IPR002857	Zinc finger, CXXC-type	Domain
A	IPR019787	Zinc finger, PHD-finger	Domain
A	IPR011011	Zinc finger, FYVE/PHD-type	Homologous Superfamily
A	IPR019786	Zinc finger, PHD-type, conserved site	Conserved Site

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: Q9P0U4	B-cell chronic lymphocytic leukemia osteosarcoma psoriasis

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.