1M21

Crystal structure analysis of the peptide amidase PAM in complex with the competitive inhibitor chymostatin

External Resource: Annotation


Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

ChainsDomain InfoClassFoldSuperfamilyFamilyDomainSpeciesProvenance Source (Version)
Ad1m21a_ Alpha and beta proteins (a/b) Amidase signature (AS) enzymes Amidase signature (AS) enzymes Amidase signature (AS) enzymes Peptide amidase Pam (Stenotrophomonas maltophilia ) [TaxId: 40324 ], SCOPe (2.08)
Bd1m21b_ Alpha and beta proteins (a/b) Amidase signature (AS) enzymes Amidase signature (AS) enzymes Amidase signature (AS) enzymes Peptide amidase Pam (Stenotrophomonas maltophilia ) [TaxId: 40324 ], SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2 FamilyAmidase signature (AS) enzymes 8030840 4002446 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyAmidase signature (AS) enzymes 8043219 3001251 SCOP2 (2022-06-29)
BSCOP2B SuperfamilyAmidase signature (AS) enzymes 8043219 3001251 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
AAmidasee1m21A1 A: a/b three-layered sandwichesX: Amidase signature (AS) enzymes (From Topology)H: Amidase signature (AS) enzymes (From Topology)T: Amidase signature (AS) enzymesF: AmidaseECOD (1.6)
BAmidasee1m21B1 A: a/b three-layered sandwichesX: Amidase signature (AS) enzymes (From Topology)H: Amidase signature (AS) enzymes (From Topology)T: Amidase signature (AS) enzymesF: AmidaseECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A3.90.1300.10 Alpha Beta Alpha-Beta Complex Amidase signature (AS) enzymes Amidase signature (AS) domainCATH (4.3.0)
B3.90.1300.10 Alpha Beta Alpha-Beta Complex Amidase signature (AS) enzymes Amidase signature (AS) domainCATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B
PF01425Amidase (Amidase)Amidase- Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, B
Peptide Amidase - -
C, D
CHYMOSTATIN---

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
A, B
IPR036928Amidase signature (AS) superfamilyHomologous Superfamily
A, B
IPR023631Amidase signature domainDomain

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

ChainsEnzyme NameDescriptionCatalytic Residues
peptide amidase  M-CSA #726

Peptide amidase (PAM) from Strenotrophomonas maltophilia (a gram-negative bacterium) catalyses the hydrolysis of the C-terminal amide bond in peptide amides. It is very regio-selective, and those terminal bonds in amino acid side chains are not hydrolysed. PAM belongs to the amidase signature (AS) family, most of which display hydrolase activity. The natural function of periplasmatic PAM is not known.

Defined by 3 residues: LYS:A-86 [auth A-123]SER:A-165 [auth A-202]SER:A-189 [auth A-226]
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Explore in 3D: M-CSA Motif Definition
Search M-CSA Motif
EC: 3.5.1 (PDB Primary Data)
EC: 3.5.1.4 (UniProt)