1CHM

ENZYMATIC MECHANISM OF CREATINE AMIDINOHYDROLASE AS DEDUCED FROM CRYSTAL STRUCTURES

External Resource: Annotation


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

ChainsDomain InfoClassFoldSuperfamilyFamilyDomainSpeciesProvenance Source (Version)
Ad1chma1 Alpha and beta proteins (a/b) Ribonuclease H-like motif Creatinase/prolidase N-terminal domain Creatinase/prolidase N-terminal domain Creatinase (Pseudomonas putida ) [TaxId: 303 ], SCOPe (2.08)
Ad1chma2 Alpha and beta proteins (a+b) Creatinase/aminopeptidase Creatinase/aminopeptidase Creatinase/aminopeptidase Creatinase, catalytic (C-terminal) domain (Pseudomonas putida ) [TaxId: 303 ], SCOPe (2.08)
Bd1chmb1 Alpha and beta proteins (a/b) Ribonuclease H-like motif Creatinase/prolidase N-terminal domain Creatinase/prolidase N-terminal domain Creatinase (Pseudomonas putida ) [TaxId: 303 ], SCOPe (2.08)
Bd1chmb2 Alpha and beta proteins (a+b) Creatinase/aminopeptidase Creatinase/aminopeptidase Creatinase/aminopeptidase Creatinase, catalytic (C-terminal) domain (Pseudomonas putida ) [TaxId: 303 ], SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2 FamilyCreatinase/aminopeptidase-like 8023862 4000207 SCOP2 (2022-06-29)
ASCOP2 FamilyCreatinase/prolidase N-terminal domain 8032133 4000535 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyCreatinase/aminopeptidase catalytic domain-like 8036242 3000126 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyCreatinase/prolidase N-terminal domain-like 8044511 3000538 SCOP2 (2022-06-29)
BSCOP2B SuperfamilyCreatinase/aminopeptidase catalytic domain-like 8036242 3000126 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyCreatinase/prolidase N-terminal domain-like 8044511 3000538 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
APeptidase_M24e1chmA1 A: a+b duplicates or obligate multimersX: Creatinase/aminopeptidase-likeH: Creatinase/aminopeptidase (From Topology)T: Creatinase/aminopeptidaseF: Peptidase_M24ECOD (1.6)
ACreatinase_Ne1chmA2 A: mixed a+b and a/bX: Ribonuclease H-likeH: Creatinase/prolidase N-terminal domain (From Topology)T: Creatinase/prolidase N-terminal domainF: Creatinase_NECOD (1.6)
BPeptidase_M24e1chmB1 A: a+b duplicates or obligate multimersX: Creatinase/aminopeptidase-likeH: Creatinase/aminopeptidase (From Topology)T: Creatinase/aminopeptidaseF: Peptidase_M24ECOD (1.6)
BCreatinase_Ne1chmB2 A: mixed a+b and a/bX: Ribonuclease H-likeH: Creatinase/prolidase N-terminal domain (From Topology)T: Creatinase/prolidase N-terminal domainF: Creatinase_NECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A3.40.350.10 Alpha Beta 3-Layer(aba) Sandwich Creatine Amidinohydrolase Chain A, domain 1CATH (4.3.0)
A3.90.230.10 Alpha Beta Alpha-Beta Complex Creatine Amidinohydrolase Creatinase/methionine aminopeptidase superfamilyCATH (4.3.0)
B3.40.350.10 Alpha Beta 3-Layer(aba) Sandwich Creatine Amidinohydrolase Chain A, domain 1CATH (4.3.0)
B3.90.230.10 Alpha Beta Alpha-Beta Complex Creatine Amidinohydrolase Creatinase/methionine aminopeptidase superfamilyCATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B
PF00557Metallopeptidase family M24 (Peptidase_M24)Metallopeptidase family M24This family contains metallopeptidases. It also contains non-peptidase homologues such as the N terminal domain of Spt16 which is a histone H3-H4 binding module [3]. Domain
A, B
PF01321Creatinase/Prolidase N-terminal domain (Creatinase_N)Creatinase/Prolidase N-terminal domainThis family includes the N-terminal non-catalytic domains from creatinase and prolidase. The exact function of this domain is uncertain. Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, B
CREATINE AMIDINOHYDROLASE - -

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
A, B
IPR039394Creatinase, C-terminalDomain
A, B
IPR000587Creatinase, N-terminalDomain
A, B
IPR029149Creatinase/Aminopeptidase P/Spt16, N-terminalHomologous Superfamily
A, B
IPR050659Peptidase M24B familyFamily
A, B
IPR036005Creatinase/aminopeptidase-likeHomologous Superfamily
A, B
IPR000994Peptidase M24Domain

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

ChainsEnzyme NameDescriptionCatalytic Residues
creatinase  M-CSA #96

Creatinase or creatine amidinohydrolase (EC:3.5.3.3) catalyses the conversion of creatine and water to sarcosine and urea. This is a key step in the metabolic breakdown of creatinine by micro-organisms. Creatinase is also found in higher animals but its metabolic role is as yet not known.

The enzyme works as a homodimer, and is induced by choline chloride. Each monomer of creatinase has two clearly defined domains, a small N-terminal domain, and a large C-terminal domain. The C-terminal domain is a member of the MEROPS peptidase family M24 (clan MG), which share a common structural-fold, the \"pita-bread\" fold. The active site is located between the N- and C-terminal domains.

Defined by 3 residues: HIS:A-231 [auth A-232]GLU:A-261 [auth A-262]GLU:A-357 [auth A-358]
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Explore in 3D: M-CSA Motif Definition
Search M-CSA Motif
EC: 3.5.3.3 (PDB Primary Data)