1PLQ

CRYSTAL STRUCTURE OF THE EUKARYOTIC DNA POLYMERASE PROCESSIVITY FACTOR PCNA

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1plqa1	Alpha and beta proteins (a+b)	DNA clamp	DNA clamp	DNA polymerase processivity factor	Proliferating cell nuclear antigen (PCNA)	baker's yeast (Saccharomyces cerevisiae ) [TaxId: 4932 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	DNA polymerase processivity factor	8024051	4002066	SCOP2 (2022-06-29)
A	SCOP2 Family	DNA polymerase processivity factor	8024053	4002066	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	DNA clamp	8036430	3000780	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	DNA clamp	8036432	3000780	SCOP2 (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	PCNA_N	e1plqA1	A: a+b two layers	X: DNA clamp (From Topology)	H: DNA clamp (From Topology)	T: DNA clamp	F: PCNA_N	ECOD (1.6)
A	PCNA_C	e1plqA2	A: a+b two layers	X: DNA clamp (From Topology)	H: DNA clamp (From Topology)	T: DNA clamp	F: PCNA_C	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 (PCNA)	DNA binding 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 identical protein binding protein binding	cellular process cell cycle mitotic cell cycle DNA-templated DNA replication lagging strand elongation primary metabolic process DNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process DNA strand elongation DNA replication metabolic process DNA strand elongation involved in DNA replication macromolecule metabolic process cellular process cell cycle mitotic cell cycle DNA-templated DNA replication lagging strand elongation primary metabolic process DNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process DNA strand elongation DNA replication metabolic process DNA strand elongation involved in DNA replication macromolecule metabolic process leading strand elongation cellular response to stimulus mismatch repair sexual reproduction response to stimulus reproductive process meiotic cell cycle meiotic cell cycle process meiotic mismatch repair meiosis I cell cycle process cellular response to stress DNA damage response response to stress cell cycle process DNA repair translesion synthesis postreplication repair nucleobase-containing compound biosynthetic process DNA synthesis involved in DNA repair macromolecule biosynthetic process error-free translesion synthesis nucleic acid biosynthetic process biosynthetic process DNA biosynthetic process regulation of cellular process 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 cellular 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 negative regulation of biological process cellular component organization chromatin organization negative regulation of cellular process chromatin remodeling cellular component organization or biogenesis negative regulation of macromolecule metabolic process regulation of biosynthetic process heterochromatin formation epigenetic regulation of gene expression negative regulation of metabolic process gene expression regulation of gene expression negative regulation of gene expression constitutive heterochromatin formation negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process silent mating-type cassette heterochromatin formation negative regulation of gene expression, epigenetic regulation of macromolecule biosynthetic process mitotic sister chromatid cohesion establishment of mitotic sister chromatid cohesion chromosome organization sister chromatid cohesion organelle organization mitotic cell cycle process establishment of sister chromatid cohesion regulation of cellular response to stress positive regulation of response to stimulus positive regulation of DNA repair regulation of response to stress regulation of DNA repair regulation of response to stimulus maintenance of DNA repeat elements maintenance of DNA trinucleotide repeats subtelomeric heterochromatin formation telomere organization nucleotide-excision repair	membrane-bounded organelle protein-containing complex intracellular anatomical structure PCNA complex nucleus nuclear protein-containing complex intracellular membrane-bounded organelle enzyme activator complex DNA polymerase processivity factor complex intracellular organelle cellular anatomical structure organelle membraneless organelle replication fork membrane-bounded organelle protein-containing complex intracellular anatomical structure PCNA complex nucleus nuclear protein-containing complex intracellular membrane-bounded organelle enzyme activator complex DNA polymerase processivity factor complex intracellular organelle cellular anatomical structure organelle membraneless organelle replication fork intracellular membraneless organelle chromosome chromosome, telomeric region chromosomal region

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 R01GM157729.