Annotations: 3UPN

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PBP_dimer_2	e3upnA4	A: beta complex topology	X: Penicillin binding protein dimerisation domain (From Topology)	H: Penicillin binding protein dimerisation domain (From Topology)	T: Penicillin binding protein dimerisation domain	F: PBP_dimer_2	ECOD (1.6)
A	Transpeptidase_1st_1	e3upnA3	A: alpha complex topology	X: alpha-helical domain in beta-lactamase/transpeptidase-like proteins (From Topology)	H: alpha-helical domain in beta-lactamase/transpeptidase-like proteins (From Topology)	T: alpha-helical domain in beta-lactamase/transpeptidase-like proteins	F: Transpeptidase_1st_1	ECOD (1.6)
A	Transpeptidase_2nd	e3upnA2	A: a+b three layers	X: Profilin-like	H: a+b domain in beta-lactamase/transpeptidase-like proteins (From Topology)	T: a+b domain in beta-lactamase/transpeptidase-like proteins	F: Transpeptidase_2nd	ECOD (1.6)
B	PBP_dimer_2	e3upnB3	A: beta complex topology	X: Penicillin binding protein dimerisation domain (From Topology)	H: Penicillin binding protein dimerisation domain (From Topology)	T: Penicillin binding protein dimerisation domain	F: PBP_dimer_2	ECOD (1.6)
B	Transpeptidase_1st_1	e3upnB2	A: alpha complex topology	X: alpha-helical domain in beta-lactamase/transpeptidase-like proteins (From Topology)	H: alpha-helical domain in beta-lactamase/transpeptidase-like proteins (From Topology)	T: alpha-helical domain in beta-lactamase/transpeptidase-like proteins	F: Transpeptidase_1st_1	ECOD (1.6)
B	Transpeptidase_2nd	e3upnB1	A: a+b three layers	X: Profilin-like	H: a+b domain in beta-lactamase/transpeptidase-like proteins (From Topology)	T: a+b domain in beta-lactamase/transpeptidase-like proteins	F: Transpeptidase_2nd	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.90.1310.10	Alpha Beta	Alpha-Beta Complex	Penicillin-binding protein 2a (Domain 2)	Penicillin-binding protein 2a (Domain 2)	CATH (4.3.0)
A	3.40.710.10	Alpha Beta	3-Layer(aba) Sandwich	Beta-lactamase	DD-peptidase/beta-lactamase superfamily	CATH (4.3.0)
B	3.90.1310.10	Alpha Beta	Alpha-Beta Complex	Penicillin-binding protein 2a (Domain 2)	Penicillin-binding protein 2a (Domain 2)	CATH (4.3.0)
B	3.40.710.10	Alpha Beta	3-Layer(aba) Sandwich	Beta-lactamase	DD-peptidase/beta-lactamase superfamily	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00905	Penicillin binding protein transpeptidase domain (Transpeptidase)	Penicillin binding protein transpeptidase domain	The active site serine (residue 337 in Swiss:P14677) is conserved in all members of this family.	Domain
A, B	PF21922	Penicillin binding protein A dimerisation domain (PBP_dimer_2)	Penicillin binding protein A dimerisation domain	This domain is found in peptidoglycan D,D-transpeptidase also known as penicillin-binding protein A (PBPA). This domain consists of a four-stranded mixed beta-sheet with three short helices packed on one side [2]. Compared to the N-terminal domains o ...	This domain is found in peptidoglycan D,D-transpeptidase also known as penicillin-binding protein A (PBPA). This domain consists of a four-stranded mixed beta-sheet with three short helices packed on one side [2]. Compared to the N-terminal domains of other class B High Molecular Mass (HMM) PBPs, the NTD of PBPA is relatively small because it contains only the so-called inter-domain linker region [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Penicillin-binding protein A	serine-type exopeptidase activity peptidase activity catalytic activity, acting on a protein serine hydrolase activity hydrolase activity peptidoglycan L,D-transpeptidase activity serine-type carboxypeptidase activity serine-type peptidase activity exopeptidase activity catalytic activity carboxypeptidase activity amide binding organic acid binding binding serine-type exopeptidase activity peptidase activity catalytic activity, acting on a protein serine hydrolase activity hydrolase activity peptidoglycan L,D-transpeptidase activity serine-type carboxypeptidase activity serine-type peptidase activity exopeptidase activity catalytic activity carboxypeptidase activity amide binding organic acid binding binding ion binding organic cyclic compound binding anion binding penicillin binding carboxylic acid binding heterocyclic compound binding monocarboxylic acid binding small molecule binding sulfur compound binding serine-type D-Ala-D-Ala carboxypeptidase activity	developmental process regulation of biological process regulation of developmental process biological regulation regulation of cell shape cell morphogenesis regulation of cell morphogenesis anatomical structure morphogenesis anatomical structure development regulation of biological quality regulation of anatomical structure morphogenesis cellular biosynthetic process cell wall organization or biogenesis glycosaminoglycan metabolic process developmental process regulation of biological process regulation of developmental process biological regulation regulation of cell shape cell morphogenesis regulation of cell morphogenesis anatomical structure morphogenesis anatomical structure development regulation of biological quality regulation of anatomical structure morphogenesis cellular biosynthetic process cell wall organization or biogenesis glycosaminoglycan metabolic process organonitrogen compound biosynthetic process carbohydrate derivative metabolic process cellular component biogenesis peptidoglycan metabolic process glycosaminoglycan biosynthetic process cellular component organization or biogenesis carbohydrate derivative biosynthetic process peptidoglycan-based cell wall biogenesis organonitrogen compound metabolic process cellular metabolic process macromolecule biosynthetic process peptidoglycan biosynthetic process cell wall biogenesis biosynthetic process cell wall macromolecule biosynthetic process aminoglycan metabolic process aminoglycan biosynthetic process cellular process metabolic process macromolecule metabolic process cellular component organization cell wall organization external encapsulating structure organization	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol cell periphery plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR012338	Beta-lactamase/transpeptidase-like	Homologous Superfamily
A, B	IPR001460	Penicillin-binding protein, transpeptidase	Domain
A, B	IPR050515	Bacterial Transpeptidases and Beta-Lactamases	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 R01GM133198.