5TKM

Crystal structure of human APOBEC3B N-terminal Domain

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d5tkma_	Alpha and beta proteins (a/b)	Cytidine deaminase-like	Cytidine deaminase-like	apolipoprotein B messenger RNA-editing enzyme catalytic (APOBEC) cytidine deaminase domains	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d5tkmb_	Alpha and beta proteins (a/b)	Cytidine deaminase-like	Cytidine deaminase-like	apolipoprotein B messenger RNA-editing enzyme catalytic (APOBEC) cytidine deaminase domains	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF18782	e5tkmA1	A: a+b three layers	X: Cytidine deaminase-like (From Topology)	H: Cytidine deaminase-like (From Topology)	T: Cytidine deaminase-like	F: PF18782	ECOD (1.6)
B	PF18782	e5tkmB1	A: a+b three layers	X: Cytidine deaminase-like (From Topology)	H: Cytidine deaminase-like (From Topology)	T: Cytidine deaminase-like	F: PF18782	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF18782	Novel AID APOBEC clade 2 (NAD2)	Novel AID APOBEC clade 2	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	DNA dC->dU-editing enzyme APOBEC-3B	hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds, in cyclic amidines cytidine deaminase activity hydrolase activity catalytic activity deaminase activity hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds cation binding transition metal ion binding zinc ion binding ion binding binding metal ion binding small molecule binding RNA binding hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds, in cyclic amidines cytidine deaminase activity hydrolase activity catalytic activity deaminase activity hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds cation binding transition metal ion binding zinc ion binding ion binding binding metal ion binding small molecule binding RNA binding organic cyclic compound binding nucleic acid binding	DNA cytosine deamination primary metabolic process DNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process DNA deamination DNA modification organic substance metabolic process macromolecule modification metabolic process macromolecule metabolic process regulation of biological process regulation of cellular process DNA cytosine deamination primary metabolic process DNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process DNA deamination DNA modification organic substance metabolic process macromolecule modification metabolic process macromolecule metabolic process regulation of biological process regulation of cellular process negative regulation of cellular process biological regulation negative regulation of biological process cellular process retrotransposon silencing transposition retrotransposition cytidine to uridine editing RNA metabolic process RNA modification base conversion or substitution editing DNA demethylation DNA dealkylation demethylation biological process involved in interspecies interaction between organisms response to stimulus immune response response to other organism defense response defense response to symbiont response to external stimulus response to biotic stimulus immune system process defense response to other organism response to stress innate immune response response to external biotic stimulus viral life cycle negative regulation of cellular metabolic process negative regulation of RNA biosynthetic process regulation of primary metabolic process regulation of RNA metabolic process organic substance biosynthetic process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process cellular metabolic process negative regulation of metabolic process regulation of cellular metabolic process single stranded viral RNA replication via double stranded DNA intermediate negative regulation of cellular biosynthetic process viral genome replication biosynthetic process negative regulation of macromolecule biosynthetic process organic cyclic compound biosynthetic process regulation of macromolecule biosynthetic process regulation of metabolic process negative regulation of RNA metabolic process regulation of single stranded viral RNA replication via double stranded DNA intermediate cellular biosynthetic process negative regulation of single stranded viral RNA replication via double stranded DNA intermediate RNA biosynthetic process nucleic acid biosynthetic process negative regulation of viral process viral RNA genome replication viral process regulation of RNA biosynthetic process negative regulation of macromolecule metabolic process regulation of biosynthetic process negative regulation of viral genome replication regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process macromolecule biosynthetic process regulation of cellular biosynthetic process regulation of viral process regulation of viral life cycle negative regulation of biosynthetic process regulation of viral genome replication defense response to virus response to virus clearance of foreign intracellular DNA clearance of foreign intracellular nucleic acids	intracellular anatomical structure cytoplasmic ribonucleoprotein granule cellular anatomical entity ribonucleoprotein granule intracellular organelle organelle intracellular non-membrane-bounded organelle cytoplasm supramolecular complex P-body non-membrane-bounded organelle membrane-bounded organelle nucleus membrane-enclosed lumen intracellular anatomical structure cytoplasmic ribonucleoprotein granule cellular anatomical entity ribonucleoprotein granule intracellular organelle organelle intracellular non-membrane-bounded organelle cytoplasm supramolecular complex P-body non-membrane-bounded organelle membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR016193	Cytidine deaminase-like	Homologous Superfamily
A, B	IPR002125	Cytidine and deoxycytidylate deaminase domain	Domain
A, B	IPR016192	APOBEC/CMP deaminase, zinc-binding	Binding Site

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: Q9UH17	squamous cell carcinoma urinary bladder cancer breast carcinoma cervical cancer Neoplastic Processes cancer head and neck cancer psoriasis urinary bladder neoplasm benign neoplasm IgA glomerulonephritis malignant tumor of neck neoplasm of neck non-small cell lung carcinoma breast cancer squamous cell carcinoma urinary bladder cancer breast carcinoma cervical cancer Neoplastic Processes cancer head and neck cancer psoriasis urinary bladder neoplasm benign neoplasm IgA glomerulonephritis malignant tumor of neck neoplasm of neck non-small cell lung carcinoma breast cancer head and neck neoplasm lung adenocarcinoma

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.