Annotations: 4LX3

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Serpin	e4lx3B01	A: a/b three-layered sandwiches	X: Rossmann-like	H: P-loop domains-related	T: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase	F: Serpin	ECOD (v294.1)
A	Serpin	e4lx3A01	A: a/b three-layered sandwiches	X: Rossmann-like	H: P-loop domains-related	T: ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase	F: Serpin	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.170.16.10	Mainly Beta	Beta Complex	Endonuclease - Pi-scei	Chain A, domain 1	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	Nucleic acid binding, OB-fold, tRNA/helicase-type	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 nucleic acid conformation isomerase activity isomerase activity helicase activity macromolecular conformation isomerase activity ATP-dependent activity 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 nucleic acid conformation isomerase activity isomerase activity helicase activity macromolecular conformation isomerase activity ATP-dependent activity binding nucleic acid binding hydrolase activity, acting on ester bonds nuclease activity 3'-5' exonuclease activity hydrolase activity exonuclease activity cation binding ion binding metal ion binding small molecule binding	nucleobase-containing compound metabolic process DNA replication metabolic process cellular process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process	-
A	DNA polymerase III, alpha subunit	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 hydrolase activity, acting on ester bonds nuclease activity 3'-5' exonuclease activity hydrolase activity exonuclease activity	nucleobase-containing compound metabolic process DNA replication metabolic process cellular process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process intein-mediated protein splicing gene expression macromolecule biosynthetic process protein maturation biosynthetic process proteolysis nucleobase-containing compound metabolic process DNA replication metabolic process cellular process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process intein-mediated protein splicing gene expression macromolecule biosynthetic process protein maturation biosynthetic process proteolysis protein processing protein metabolic process protein splicing	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR004365	OB-fold nucleic acid binding domain, AA-tRNA synthetase-type	Domain
B	IPR030934	Intein C-terminal splicing region	Conserved Site
B	IPR029460	DNA polymerase, helix-hairpin-helix motif	Domain
B	IPR004805	Error-prone DNA polymerase/DNA polymerase III subunit alpha DnaE/PolC	Family
A	IPR036844	Hint domain superfamily	Homologous Superfamily
A	IPR040982	DNA polymerase III alpha subunit finger domain	Domain
A	IPR004013	PHP domain	Domain
A	IPR006141	Intein N-terminal splicing region	PTM
A	IPR016195	Polymerase/histidinol phosphatase-like	Homologous Superfamily
A	IPR003587	Hint domain N-terminal	Domain
A	IPR041931	Bacterial DNA polymerase III alpha subunit, thumb domain	Homologous Superfamily
A	IPR003141	Polymerase/histidinol phosphatase, N-terminal	Domain
A	IPR011708	Bacterial DNA polymerase III, alpha subunit, NTPase domain	Domain
A	IPR004805	Error-prone DNA polymerase/DNA polymerase III subunit alpha DnaE/PolC	Family

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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.