4ECS

Human DNA polymerase eta - DNA ternary complex: Reaction in the AT crystal at pH 7.0 for 80 sec

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations
Structure Motif: Primary M-CSA Annotation

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Nucleotide cyclase/DNA polymerase palm domain-like	8101834	3001272	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Lesion bypass DNA polymerase (Y-family), little finger domain	8101833	3000579	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Nucleotide cyclase/DNA polymerase palm domain-like	8101834	3001272	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Ta1206-like	8101835	3001431	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	KOG2095_1st	e4ecsA4	A: alpha arrays	X: HhH/H2TH	H: SAM/DNA-glycosylase	T: SAM domain-like	F: KOG2095_1st	ECOD (1.6)
A	IMS_C	e4ecsA2	A: a+b two layers	X: Reverse ferredoxin	H: Lesion bypass DNA polymerase (Y-family), little finger domain (From Topology)	T: Lesion bypass DNA polymerase (Y-family), little finger domain	F: IMS_C	ECOD (1.6)
A	IMS	e4ecsA1	A: a+b two layers	X: Alpha-beta plaits	H: Adenylyl and guanylyl cyclase catalytic domain-like	T: Adenylyl and guanylyl cyclase catalytic domain-like	F: IMS	ECOD (1.6)
A	IMS_1	e4ecsA3	A: a+b three layers	X: Hypothetical protein Ta1206-like (From Topology)	H: Hypothetical protein Ta1206-like (From Topology)	T: Hypothetical protein Ta1206-like	F: IMS_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.70.270	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Reverse transcriptase/Diguanylate cyclase domain	CATH (4.3.0)
A	3.40.1170.60	Alpha Beta	3-Layer(aba) Sandwich	MutS, DNA mismatch repair protein, domain I		CATH (4.3.0)
A	1.10.150.20	Mainly Alpha	Orthogonal Bundle	DNA polymerase	domain 1	CATH (4.3.0)
A	3.30.1490.100	Alpha Beta	2-Layer Sandwich	Dna Ligase	domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00817	impB/mucB/samB family (IMS)	impB/mucB/samB family	-	Family
A	PF21704	DNApol eta/Rev1, HhH motif (POLH-Rev1_HhH)	DNApol eta/Rev1, HhH motif	-	Motif
A	PF11799	impB/mucB/samB family C-terminal domain (IMS_C)	impB/mucB/samB family C-terminal domain	These proteins are involved in UV protection (Swiss).	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	DNA polymerase eta	DNA binding binding organic cyclic compound binding damaged DNA binding nucleic acid binding catalytic activity, acting on DNA DNA-directed DNA polymerase activity DNA polymerase activity catalytic activity, acting on a nucleic acid transferase activity nucleotidyltransferase activity catalytic activity transferase activity, transferring phosphorus-containing groups cation binding DNA binding binding organic cyclic compound binding damaged DNA binding nucleic acid binding catalytic activity, acting on DNA DNA-directed DNA polymerase activity DNA polymerase activity catalytic activity, acting on a nucleic acid transferase activity nucleotidyltransferase activity catalytic activity transferase activity, transferring phosphorus-containing groups cation binding ion binding metal ion binding small molecule binding	nucleobase-containing compound metabolic process DNA replication metabolic process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process cellular response to stimulus postreplication repair response to stimulus cellular biosynthetic process DNA synthesis involved in DNA repair nucleic acid biosynthetic process cellular response to stress nucleobase-containing compound metabolic process DNA replication metabolic process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process cellular response to stimulus postreplication repair response to stimulus cellular biosynthetic process DNA synthesis involved in DNA repair nucleic acid biosynthetic process cellular response to stress response to stress DNA repair translesion synthesis cellular metabolic process nucleobase-containing compound biosynthetic process macromolecule biosynthetic process error-free translesion synthesis biosynthetic process DNA damage response cellular process DNA biosynthetic process response to radiation response to abiotic stimulus pyrimidine dimer repair response to light stimulus cellular response to radiation response to UV cellular response to environmental stimulus cellular response to UV-C response to UV-C cellular response to light stimulus cellular response to abiotic stimulus cellular response to UV error-prone translesion synthesis regulation of cellular process regulation of cellular response to stress regulation of primary metabolic process regulation of response to stress regulation of nucleobase-containing compound metabolic process regulation of biological process biological regulation regulation of macromolecule metabolic process regulation of DNA repair regulation of response to stimulus regulation of metabolic process regulation of DNA metabolic process	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen intracellular anatomical structure cytoplasm cellular anatomical entity cytosol membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen intracellular non-membrane-bounded organelle replication fork chromosome non-membrane-bounded organelle site of double-strand break site of DNA damage
B [auth T]	DNA (5'-D(CPAPTPTPAPTPGPAPCPGPCPT)-3')	-	-	-
C [auth P]	DNA (5'-D(APGPCPGPTPCPAPTP*A)-3')	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR043128	Reverse transcriptase/Diguanylate cyclase domain	Homologous Superfamily
A	IPR052230	DNA polymerase eta	Family
A	IPR017961	DNA polymerase, Y-family, little finger domain	Domain
A	IPR041298	DNA polymerase eta, ubiquitin-binding zinc finger	Domain
A	IPR001126	UmuC domain	Domain
A	IPR043502	DNA/RNA polymerase superfamily	Homologous Superfamily
A	IPR036775	DNA polymerase, Y-family, little finger domain superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: Q9Y253	xeroderma pigmentosum xeroderma pigmentosum variant type acute myeloid leukemia Malignant neoplasm of breast tuberculosis breast cancer medulloblastoma malignant glioma osteosarcoma

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

Chains	Enzyme Name	Description	Catalytic Residues
A	DNA polymerase eta M-CSA #975	DNA polymerase eta is a translesion synthesis (TLS) polymerase. The TLS polymerases are an important part of the DNA synthesis pathway which aid in resistance to DNA damage. They are crucial in overcoming DNA damage in cells by bypassing DNA damage lesions during DNA replication, which may otherwise stall the replication fork and lead to cell death. Eta polymerases are of interest because when mutated, can lead to cancer and are implicated as causes of antibiotic and chemotherapy resistance.	Defined by 9 residues: ASP:A-16 [auth A-13]MET:A-17 [auth A-14]TYR:A-55 [auth A-52]ARG:A-58 [auth A-55]ARG:A-64 [auth A-61]SER:A-116 [auth A-113]ASP:A-118 [auth A-115]GLU:A-119 [auth A-116]LYS:A-234 [auth A-231] \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 2.7.7.7 (PDB Primary Data) Search M-CSA Motif + EC 2.7.7.7

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.