Annotations: 4HK1

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d4hk1a1	Alpha and beta proteins (a+b)	DNA clamp	DNA clamp	automated matches	automated matches	Fruit fly (Drosophila melanogaster ) [TaxId: 7227 ],	SCOPe (2.08)
A	d4hk1a3	Artifacts	Tags	Tags	Tags	N-terminal Tags	Fruit fly (Drosophila melanogaster ) [TaxId: 7227 ],	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	PF00705	e4hk1A1	A: a+b two layers	X: DNA clamp (From Topology)	H: DNA clamp (From Topology)	T: DNA clamp	F: PF00705	ECOD (1.6)
A	PF02747	e4hk1A2	A: a+b two layers	X: DNA clamp (From Topology)	H: DNA clamp (From Topology)	T: DNA clamp	F: PF02747	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.70.10.10	Alpha Beta	Box	Proliferating Cell Nuclear Antigen		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF02747	Proliferating cell nuclear antigen, C-terminal domain (PCNA_C)	Proliferating cell nuclear antigen, C-terminal domain	N-terminal and C-terminal domains of PCNA are topologically identical. Three PCNA molecules are tightly associated to form a closed ring encircling duplex DNA.	Domain
A	PF00705	Proliferating cell nuclear antigen, N-terminal domain (PCNA_N)	Proliferating cell nuclear antigen, N-terminal domain	N-terminal and C-terminal domains of PCNA are topologically identical. Three PCNA molecules are tightly associated to form a closed ring encircling duplex DNA.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Proliferating cell nuclear antigen	protein-containing complex binding chromatin binding binding DNA binding organic cyclic compound binding nucleic acid binding enzyme regulator activity DNA polymerase processivity factor activity enzyme activator activity molecular function activator activity molecular function regulator activity	cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process nucleobase-containing compound metabolic process organic cyclic compound metabolic process DNA replication organic substance metabolic process metabolic process primary metabolic process DNA metabolic process macromolecule metabolic process cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process nucleobase-containing compound metabolic process organic cyclic compound metabolic process DNA replication organic substance metabolic process metabolic process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process DNA-templated DNA replication leading strand elongation DNA strand elongation DNA strand elongation involved in DNA replication mismatch repair DNA repair positive regulation of DNA replication positive regulation of biological process regulation of primary metabolic process positive regulation of metabolic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process positive regulation of nucleobase-containing compound metabolic process regulation of biological process biological regulation regulation of macromolecule metabolic process positive regulation of DNA metabolic process regulation of metabolic process regulation of DNA metabolic process regulation of DNA replication postreplication repair cellular biosynthetic process DNA synthesis involved in DNA repair nucleic acid biosynthetic process organic substance biosynthetic process translesion synthesis cellular metabolic process nucleobase-containing compound biosynthetic process macromolecule biosynthetic process biosynthetic process organic cyclic compound biosynthetic process DNA biosynthetic process regulation of cellular process regulation of cellular response to stress positive regulation of response to stimulus positive regulation of DNA repair regulation of response to stress positive regulation of cellular process regulation of DNA repair regulation of response to stimulus eggshell chorion gene amplification cellular component assembly involved in morphogenesis reproductive process cellular process involved in reproduction in multicellular organism developmental process involved in reproduction cellular component organization cellular component biogenesis cellular anatomical entity morphogenesis cellular component assembly anatomical structure development cellular component organization or biogenesis developmental process DNA amplification multicellular organismal reproductive process egg chorion assembly anatomical structure morphogenesis anatomical structure formation involved in morphogenesis external encapsulating structure organization response to organic substance response to methyl methanesulfonate response to chemical response to oxygen-containing compound response to light stimulus response to radiation response to abiotic stimulus response to UV microtubule cytoskeleton organization mitotic cell cycle mitotic spindle organization organelle organization mitotic cell cycle process microtubule-based process cell cycle cytoskeleton organization microtubule cytoskeleton organization involved in mitosis spindle organization cell cycle process nucleotide-excision repair response to hydrogen peroxide response to oxidative stress response to reactive oxygen species response to inorganic substance	intracellular anatomical structure cytoplasm cellular anatomical entity intracellular organelle protein-containing complex protein-DNA complex organelle intracellular non-membrane-bounded organelle chromatin chromosome non-membrane-bounded organelle membrane-bounded organelle PCNA complex nucleus intracellular anatomical structure cytoplasm cellular anatomical entity intracellular organelle protein-containing complex protein-DNA complex organelle intracellular non-membrane-bounded organelle chromatin chromosome non-membrane-bounded organelle membrane-bounded organelle PCNA complex nucleus nuclear protein-containing complex intracellular membrane-bounded organelle enzyme activator complex DNA polymerase processivity factor complex membrane-enclosed lumen nuclear replication fork nuclear chromosome intracellular organelle lumen organelle lumen replication fork nuclear lumen

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR046938	DNA clamp superfamily	Homologous Superfamily
A	IPR022648	Proliferating cell nuclear antigen, PCNA, N-terminal	Domain
A	IPR000730	Proliferating cell nuclear antigen, PCNA	Family
A	IPR022649	Proliferating cell nuclear antigen, PCNA, C-terminal	Domain
A	IPR022659	Proliferating cell nuclear antigen, PCNA, conserved site	Conserved Site

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.