3S8R
Crystal Structures of Glutaryl 7-Aminocephalosporanic Acid Acylase: Insight into Autoproteolytic Activation
External Resource: Annotation
Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage
Chains | Domain Info | Class | Fold | Superfamily | Family | Domain | Species | Provenance Source (Version) |
---|---|---|---|---|---|---|---|---|
A | d3s8ra_ | Alpha and beta proteins (a+b) | Ntn hydrolase-like | N-terminal nucleophile aminohydrolases (Ntn hydrolases) | Penicillin acylase, catalytic domain | Cephalosporin acylase | (Pseudomonas sp. SY-77-1 ) [TaxId: 269086 ], | SCOPe (2.08) |
B | d3s8rb_ | Alpha and beta proteins (a+b) | Ntn hydrolase-like | N-terminal nucleophile aminohydrolases (Ntn hydrolases) | Penicillin acylase, catalytic domain | Cephalosporin acylase | (Pseudomonas sp. SY-77-1 ) [TaxId: 269086 ], | SCOPe (2.08) |
Domain Annotation: SCOP2 Classification SCOP2 Database Homepage
Chains | Type | Family Name | Domain Identifier | Family Identifier | Provenance Source (Version) |
---|---|---|---|---|---|
A | SCOP2 Family | Penicillin acylase, catalytic domain | 8025335 | 4002245 | SCOP2 (2022-06-29) |
A | SCOP2 Superfamily | Class II glutamine amidotransferases | 8037714 | 3000131 | SCOP2 (2022-06-29) |
B | SCOP2B Superfamily | Class II glutamine amidotransferases | 8037714 | 3000131 | 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 | PF01804 | e3s8rA1 | A: a+b four layers | X: Ntn/PP2C | H: Ntn | T: Penicillin acylase, catalytic domain | F: PF01804 | ECOD (1.6) |
B | PF01804 | e3s8rB1 | A: a+b four layers | X: Ntn/PP2C | H: Ntn | T: Penicillin acylase, catalytic domain | F: PF01804 | ECOD (1.6) |
Domain Annotation: CATH CATH Database Homepage
Protein Family Annotation Pfam Database Homepage
Chains | Accession | Name | Description | Comments | Source |
---|---|---|---|---|---|
PF01804 | Penicillin amidase (Penicil_amidase) | Penicillin amidase | - | Family |
Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage
Chains | Polymer | Molecular Function | Biological Process | Cellular Component |
---|---|---|---|---|
Glutaryl-7-aminocephalosporanic-acid acylase |
InterPro: Protein Family Classification InterPro Database Homepage
Chains | Accession | Name | Type |
---|---|---|---|
IPR043146 | Penicillin amidase type, N-terminal domain, B-knob | Homologous Superfamily | |
IPR029055 | Nucleophile aminohydrolases, N-terminal | Homologous Superfamily | |
IPR002692 | Penicillin/GL-7-ACA/AHL/aculeacin-A acylase | Family | |
IPR014395 | Penicillin/GL-7-ACA/AHL acylase | Family | |
IPR023343 | Penicillin amidase type, domain 1 | Homologous Superfamily | |
IPR043147 | Penicillin amidase type, A-knob | Homologous Superfamily |
Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage
Chains | Enzyme Name | Description | Catalytic Residues |
---|---|---|---|
glutaryl-7-aminocephalosporanic-acid acylase M-CSA #288 | Glutaryl 7-aminocephalosporanic acid (7-ACA) acylase catalyses the hydrolysis of Glutaryl 7-ACA to Glutaric acid and 7-ACA. It belongs to the family of N-terminal hydrolase (peptidase S45 family). 7-ACA is the starting compound for the synthesis of cephalosporin antibiotics and it is usually obtained industrially by chemical deacylation of cephalosporin C(CPC). Since the chemical production of 7-ACA is expensive and produce toxic chemical wastes, the enzymatic conversion of CPC to 7-ACA by 7-ACA acylase is of great interest. In order for the enzyme to be activated towards catalysing the hydrolysis of the glutaryl form of 7-aminocephalosporanic acid, autoproteolysis must occur at the nucleophilic Ser170, revealing an N terminal nucleophile capable of inducing nucleophilic attack at the substrate's glutaryl carbonyl. The process forms two descrete proteins chains. The crystal structure depicts the non-cleaved, precursor protein, whereas the active protein froms a heterotetramer from the two resulting chains. | Defined by 5 residues: ALA:A-170HIS:A-192VAL:A-239ASN:A-413GLU:A-624 | EC: 3.5.1.93 (PDB Primary Data) |