Annotations: 2HIK

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	F_UNCLASSIFIED	e2hikA2	A: a+b two layers	X: DNA clamp (From Topology)	H: DNA clamp (From Topology)	T: DNA clamp	F: F_UNCLASSIFIED	ECOD (1.6)
A	PF00705	e2hikA1	A: a+b two layers	X: DNA clamp (From Topology)	H: DNA clamp (From Topology)	T: DNA clamp	F: PF00705	ECOD (1.6)
D [auth L]	F_UNCLASSIFIED	e2hikL2	A: a+b two layers	X: DNA clamp (From Topology)	H: DNA clamp (From Topology)	T: DNA clamp	F: F_UNCLASSIFIED	ECOD (1.6)
D [auth L]	PF00705	e2hikL1	A: a+b two layers	X: DNA clamp (From Topology)	H: DNA clamp (From Topology)	T: DNA clamp	F: PF00705	ECOD (1.6)
G [auth X]	F_UNCLASSIFIED	e2hikX2	A: a+b two layers	X: DNA clamp (From Topology)	H: DNA clamp (From Topology)	T: DNA clamp	F: F_UNCLASSIFIED	ECOD (1.6)
G [auth X]	PF00705	e2hikX1	A: a+b two layers	X: DNA clamp (From Topology)	H: DNA clamp (From Topology)	T: DNA clamp	F: PF00705	ECOD (1.6)
E [auth M]	PF00705	e2hikM1	A: a+b two layers	X: DNA clamp (From Topology)	H: DNA clamp (From Topology)	T: DNA clamp	F: PF00705	ECOD (1.6)
E [auth M]	PF02747	e2hikM2	A: a+b two layers	X: DNA clamp (From Topology)	H: DNA clamp (From Topology)	T: DNA clamp	F: PF02747	ECOD (1.6)
H [auth Y]	PF00705	e2hikY1	A: a+b two layers	X: DNA clamp (From Topology)	H: DNA clamp (From Topology)	T: DNA clamp	F: PF00705	ECOD (1.6)
H [auth Y]	PF02747	e2hikY2	A: a+b two layers	X: DNA clamp (From Topology)	H: DNA clamp (From Topology)	T: DNA clamp	F: PF02747	ECOD (1.6)
B	PF00705	e2hikB1	A: a+b two layers	X: DNA clamp (From Topology)	H: DNA clamp (From Topology)	T: DNA clamp	F: PF00705	ECOD (1.6)
B	PF02747	e2hikB2	A: a+b two layers	X: DNA clamp (From Topology)	H: DNA clamp (From Topology)	T: DNA clamp	F: PF02747	ECOD (1.6)
I [auth Z]	PF00705	e2hikZ1	A: a+b two layers	X: DNA clamp (From Topology)	H: DNA clamp (From Topology)	T: DNA clamp	F: PF00705	ECOD (1.6)
I [auth Z]	PF02747	e2hikZ2	A: a+b two layers	X: DNA clamp (From Topology)	H: DNA clamp (From Topology)	T: DNA clamp	F: PF02747	ECOD (1.6)
C	PF00705	e2hikC1	A: a+b two layers	X: DNA clamp (From Topology)	H: DNA clamp (From Topology)	T: DNA clamp	F: PF00705	ECOD (1.6)
C	PF02747	e2hikC2	A: a+b two layers	X: DNA clamp (From Topology)	H: DNA clamp (From Topology)	T: DNA clamp	F: PF02747	ECOD (1.6)
F [auth N]	PF00705	e2hikN1	A: a+b two layers	X: DNA clamp (From Topology)	H: DNA clamp (From Topology)	T: DNA clamp	F: PF00705	ECOD (1.6)
F [auth N]	PF02747	e2hikN2	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)
D [auth L]	3.70.10.10	Alpha Beta	Box	Proliferating Cell Nuclear Antigen		CATH (4.3.0)
G [auth X]	3.70.10.10	Alpha Beta	Box	Proliferating Cell Nuclear Antigen		CATH (4.3.0)
E [auth M]	3.70.10.10	Alpha Beta	Box	Proliferating Cell Nuclear Antigen		CATH (4.3.0)
H [auth Y]	3.70.10.10	Alpha Beta	Box	Proliferating Cell Nuclear Antigen		CATH (4.3.0)
B	3.70.10.10	Alpha Beta	Box	Proliferating Cell Nuclear Antigen		CATH (4.3.0)
I [auth Z]	3.70.10.10	Alpha Beta	Box	Proliferating Cell Nuclear Antigen		CATH (4.3.0)
C	3.70.10.10	Alpha Beta	Box	Proliferating Cell Nuclear Antigen		CATH (4.3.0)
F [auth N]	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, D [auth L], G [auth X]	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
B, E [auth M], H [auth Y]	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
B, E [auth M], H [auth Y]	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
C, F [auth N], I [auth Z]	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
C, F [auth N], I [auth Z]	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, D [auth L], G [auth X]	PCNA1 (SSO0397)	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	DNA-templated DNA replication primary metabolic process DNA metabolic process leading strand elongation nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process DNA strand elongation organic substance metabolic process DNA replication metabolic process DNA strand elongation involved in DNA replication macromolecule metabolic process regulation of biological process DNA-templated DNA replication primary metabolic process DNA metabolic process leading strand elongation nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process DNA strand elongation organic substance metabolic process DNA replication metabolic process DNA strand elongation involved in DNA replication macromolecule metabolic process regulation of biological process biological regulation regulation of macromolecule metabolic process regulation of primary metabolic process regulation of nucleobase-containing compound metabolic process regulation of metabolic process regulation of DNA replication regulation of DNA metabolic process	-
B, E [auth M], H [auth Y]	PCNA2 (SSO1047)	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	DNA-templated DNA replication primary metabolic process DNA metabolic process leading strand elongation nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process DNA strand elongation organic substance metabolic process DNA replication metabolic process DNA strand elongation involved in DNA replication macromolecule metabolic process regulation of biological process DNA-templated DNA replication primary metabolic process DNA metabolic process leading strand elongation nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process DNA strand elongation organic substance metabolic process DNA replication metabolic process DNA strand elongation involved in DNA replication macromolecule metabolic process regulation of biological process biological regulation regulation of macromolecule metabolic process regulation of primary metabolic process regulation of nucleobase-containing compound metabolic process regulation of metabolic process regulation of DNA replication regulation of DNA metabolic process	-
C, F [auth N], I [auth Z]	PCNA3 (SSO0405)	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	DNA-templated DNA replication primary metabolic process DNA metabolic process leading strand elongation nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process DNA strand elongation organic substance metabolic process DNA replication metabolic process DNA strand elongation involved in DNA replication macromolecule metabolic process regulation of biological process DNA-templated DNA replication primary metabolic process DNA metabolic process leading strand elongation nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process DNA strand elongation organic substance metabolic process DNA replication metabolic process DNA strand elongation involved in DNA replication macromolecule metabolic process regulation of biological process biological regulation regulation of macromolecule metabolic process regulation of primary metabolic process regulation of nucleobase-containing compound metabolic process regulation of metabolic process regulation of DNA replication regulation of DNA metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, D [auth L], G [auth X]	IPR046938	DNA clamp superfamily	Homologous Superfamily
A, D [auth L], G [auth X]	IPR000730	Proliferating cell nuclear antigen, PCNA	Family
A, D [auth L], G [auth X]	IPR022648	Proliferating cell nuclear antigen, PCNA, N-terminal	Domain
B, E [auth M], H [auth Y]	IPR046938	DNA clamp superfamily	Homologous Superfamily
B, E [auth M], H [auth Y]	IPR000730	Proliferating cell nuclear antigen, PCNA	Family
B, E [auth M], H [auth Y]	IPR022649	Proliferating cell nuclear antigen, PCNA, C-terminal	Domain
B, E [auth M], H [auth Y]	IPR022659	Proliferating cell nuclear antigen, PCNA, conserved site	Conserved Site
B, E [auth M], H [auth Y]	IPR022648	Proliferating cell nuclear antigen, PCNA, N-terminal	Domain
C, F [auth N], I [auth Z]	IPR046938	DNA clamp superfamily	Homologous Superfamily
C, F [auth N], I [auth Z]	IPR000730	Proliferating cell nuclear antigen, PCNA	Family
C, F [auth N], I [auth Z]	IPR022649	Proliferating cell nuclear antigen, PCNA, C-terminal	Domain
C, F [auth N], I [auth Z]	IPR022659	Proliferating cell nuclear antigen, PCNA, conserved site	Conserved Site
C, F [auth N], I [auth Z]	IPR022648	Proliferating cell nuclear antigen, PCNA, N-terminal	Domain

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.