Domain Annotation: SCOP Classification SCOP Database (version: 2.0) Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species
A	d3mgha1	All alpha proteins	SAM domain-like	DNA polymerase beta, N-terminal domain-like	DNA polymerase beta, N-terminal domain-like	DNA polymerase lambda	human (Homo sapiens ) [TaxId: 9606 ], human (Homo sapiens ) [TaxId: 9606 ]
A	d3mgha2	All alpha proteins	SAM domain-like	PsbU/PolX domain-like	DNA polymerase beta-like, second domain	DNA polymerase lambda	human (Homo sapiens ) [TaxId: 9606 ], human (Homo sapiens ) [TaxId: 9606 ]
A	d3mgha3	Alpha and beta proteins (a+b)	Nucleotidyltransferase	Nucleotidyltransferase	DNA polymerase beta-like	DNA polymerase lambda	human (Homo sapiens ) [TaxId: 9606 ], human (Homo sapiens ) [TaxId: 9606 ]
E	d3mghc1	All alpha proteins	SAM domain-like	DNA polymerase beta, N-terminal domain-like	DNA polymerase beta, N-terminal domain-like	DNA polymerase lambda	human (Homo sapiens ) [TaxId: 9606 ], human (Homo sapiens ) [TaxId: 9606 ]
E	d3mghc2	All alpha proteins	SAM domain-like	PsbU/PolX domain-like	DNA polymerase beta-like, second domain	DNA polymerase lambda	human (Homo sapiens ) [TaxId: 9606 ], human (Homo sapiens ) [TaxId: 9606 ]
E	d3mghc3	Alpha and beta proteins (a+b)	Nucleotidyltransferase	Nucleotidyltransferase	DNA polymerase beta-like	DNA polymerase lambda	human (Homo sapiens ) [TaxId: 9606 ], human (Homo sapiens ) [TaxId: 9606 ]

Domain Annotation: CATH CATH Database (version 4.2.0) Homepage

Chain	Domain	Class	Architecture	Topology	Homology
A	1.10.150.110	Mainly Alpha	Orthogonal Bundle	DNA polymerase	domain 1
A	1.10.150.20	Mainly Alpha	Orthogonal Bundle	DNA polymerase	domain 1
A	3.30.460.10	Alpha Beta	2-Layer Sandwich	Beta Polymerase	domain 2
A	3.30.210.10	Alpha Beta	2-Layer Sandwich	Beta Polymerase	domain 3
E	1.10.150.110	Mainly Alpha	Orthogonal Bundle	DNA polymerase	domain 1
E	1.10.150.20	Mainly Alpha	Orthogonal Bundle	DNA polymerase	domain 1
E	3.30.460.10	Alpha Beta	2-Layer Sandwich	Beta Polymerase	domain 2
E	3.30.210.10	Alpha Beta	2-Layer Sandwich	Beta Polymerase	domain 3

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Identifier	Description	Comments	Source
A, E	PF14716	Helix-hairpin-helix domain (HHH_8)	Helix-hairpin-helix domain	-	Domain
A, E	PF14791	DNA polymerase beta thumb (DNA_pol_B_thumb)	DNA polymerase beta thumb	-	Family
A, E	PF14792	DNA polymerase beta palm (DNA_pol_B_palm)	DNA polymerase beta palm	The catalytic region of DNA polymerase beta is split into three domains. An N-terminal fingers domain, a central palm domain and a C-terminal thumb domain. This entry represents the palm domain [1].	Domain
A, E	PF10391	Fingers domain of DNA polymerase lambda (DNA_pol_lambd_f)	Fingers domain of DNA polymerase lambda	DNA polymerases catalyse the addition of dNMPs onto the 3-prime ends of DNA chains. There is a general polymerase fold consisting of three subdomains that have been likened to the fingers, palm, and thumb of a right hand. DNA_pol_lambd_f is the centr ...	DNA polymerases catalyse the addition of dNMPs onto the 3-prime ends of DNA chains. There is a general polymerase fold consisting of three subdomains that have been likened to the fingers, palm, and thumb of a right hand. DNA_pol_lambd_f is the central three-helical region of DNA polymerase lambda referred to as the F and G helices of the fingers domain. Contacts with DNA involve this conserved helix-hairpin-helix motif in the fingers region which interacts with the primer strand. This motif is common to several DNA binding proteins and confers a sequence-independent interaction with the DNA backbone [1].	Domain

Gene Product Annotation Gene Product Annotation

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, C	DNA polymerase lambda	catalytic activity lyase activity carbon-oxygen lyase activity 5'-deoxyribose-5-phosphate lyase activity catalytic activity, acting on DNA nucleic acid binding DNA binding binding organic cyclic compound binding heterocyclic compound binding DNA-directed DNA polymerase activity transferase activity transferase activity, transferring phosphorus-containing groups nucleotidyltransferase activity DNA polymerase activity ion binding cation binding metal ion binding		intracellular anatomical structure nucleus nucleoplasm membrane-enclosed lumen nuclear lumen organelle membrane-bounded organelle intracellular organelle intracellular membrane-bounded organelle organelle lumen intracellular organelle lumen cellular anatomical entity
E, T	DNA (5'-D(CPGPGPCPAPGPTPAPCPTP*G)-3')	none	none	none
F, P	DNA (5'-D(CPAPGPTPAPC)-3')	none	none	none
D, G	DNA (5'-D(PGPCPCPG)-3')	none	none	none

RCSB PDB is 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.