Enzyme

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     5. Isomerases
        5.5 Intramolecular lyases
            5.5.1 Intramolecular lyases (only sub-subclass identified to date)
ID:5.5.1.1
Description:Muconate cycloisomerase.
Alternative Name: Muconate lactonizing enzyme.
Muconate cycloisomerase I.
Cis,cis-muconate lactonizing enzyme I.
Prosite: PDOC00706;
PDB:
PDBScop
Cath: 3.20.20.120; 3.30.390.10;

3D structure

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References

External Links

UniProtKB Enzyme Link: UniProtKB 5.5.1.1
BRENDA Enzyme Link: BRENDA 5.5.1.1
KEGG Enzyme Link: KEGG5.5.1.1
BioCyc Enzyme Link: BioCyc 5.5.1.1
ExPASy Enzyme Link: ExPASy5.5.1.1
EC2PDB Enzyme Link: EC2PDB 5.5.1.1
ExplorEnz Enzyme Link: ExplorEnz 5.5.1.1
PRIAM enzyme-specific profiles Link: PRIAM 5.5.1.1
IntEnz Enzyme Link: IntEnz 5.5.1.1
MEDLINE Enzyme Link: MEDLINE 5.5.1.1
MSA:

5.5.1.1;

Phylogenetic Tree:

5.5.1.1;

Uniprot:
M-CSA:
RHEA:30031 (+)-muconolactone = cis,cis-muconate + H(+)
RULE(radius=1) [*:1]-[O;H0;+0:2]-[CH;+0:3](-[*:4])-[CH2;+0:5]-[*:6]>>([*:4]-[CH;+0:3]=[CH;+0:5]-[*:6].[*:1]-[OH;+0:2])
Reaction
Core-to-Core No scaffolds atoms were exchanged as a result of the reaction

References

TitleAuthorsDatePubMed ID
The conversion of catechol and protocatechuate to beta-ketoadipate by Pseudomonas putida. 3. Enzymes of the catechol pathway.Ornston LN1966 Aug 255330966
Mandelate racemase and muconate lactonizing enzyme are mechanistically distinct and structurally homologous.Neidhart DJ, Kenyon GL, Gerlt JA, Petsko GA1990 Oct 182215699
Insight into the reaction mechanism of cis,cis-muconate lactonizing enzymes: a DFT QM/MM study.Somboon T, Gleeson MP, Hannongbua S2012 Feb21541743
The mechanism of formation of beta-ketoadipic acid by bacteria.SISTROM WR, STANIER RY1954 Oct13211620
Evolution of enzymatic activities in the enolase superfamily: stereochemically distinct mechanisms in two families of cis,cis-muconate lactonizing enzymes.Sakai A, Fedorov AA, Fedorov EV, Schnoes AM, Glasner ME, Brown S, Rutter ME, Bain K, Chang S, Gheyi T, Sauder JM, Burley SK, Babbitt PC, Almo SC, Gerlt JA2009 Feb 2419220063