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Information on EC 5.4.99.5 - chorismate mutase and Organism(s) Thermus thermophilus and UniProt Accession Q84FH6

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EC Tree
     5 Isomerases
         5.4 Intramolecular transferases
             5.4.99 Transferring other groups
                5.4.99.5 chorismate mutase
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This record set is specific for:
Thermus thermophilus
UNIPROT: Q84FH6 not found.
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Word Map
The taxonomic range for the selected organisms is: Thermus thermophilus
The expected taxonomic range for this enzyme is: Bacteria, Eukaryota, Archaea
Reaction Schemes
Synonyms
chorismate mutase, p-protein, chorismate mutase/prephenate dehydratase, chorismate mutase-prephenate dehydrogenase, bacillus subtilis chorismate mutase, cm type 2, rv1885c, cm0819, atcm1, chorismate mutase 1, more
SYNONYM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
chorismate mutase
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chorismate mutase
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-
Chorismate mutase/prephenate dehydratase
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-
-
-
Mutase, chorismate
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-
-
-
P protein
-
-
-
-
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
Chorismate = prephenate
show the reaction diagram
Three active sites are formed in the interstices between three subunits. Each active site is composed of the residues of two adjacent subunits. The two Arg hold the chorismate. Crucial distance between Arg6 and Arg63* controls the conformation of the chorismate. The residues in the close vicinity to the chorismate substrate are Arg6, Glu77, Arg89, Tyr 107, Leu114, and Arg115 from one subunit and Phe57*, Ala59*, Arg63*, Leu72*, and Leu73* from the other subunit. The family of the chorismate mutase enzymes shares a common E.S active site
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REACTION TYPE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
isomerization
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-
-
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rearrangement
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Claisen rearrangement
SYSTEMATIC NAME
IUBMB Comments
Chorismate pyruvatemutase
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CAS REGISTRY NUMBER
COMMENTARY hide
9068-30-8
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SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
Chorismate
Prephenate
show the reaction diagram
Chorismate
Prephenate
show the reaction diagram
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-
-
-
?
NATURAL SUBSTRATE
NATURAL PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
Chorismate
Prephenate
show the reaction diagram
biosynthesis of aromatic amino acids
-
?
Chorismate
Prephenate
show the reaction diagram
-
-
-
-
?
INHIBITOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
tyrosine
competitive inhibition, 0.5 M tyrosine leads to 40% inhibition
KM VALUE [mM]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
0.29
chorismate
70°C, pH 7.6
TURNOVER NUMBER [1/s]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
52
chorismate
70°C, pH 7.6
Ki VALUE [mM]
INHIBITOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
0.034
tyrosine
70°C, pH 7.6
SPECIFIC ACTIVITY [µmol/min/mg]
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
25
after affinity chromatography
TEMPERATURE OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
70
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As the temperature is lowered, distances of electrostatic and hydrophobic interactions decrease. The distance between Glu77-COOH and the hydroxyl oxygen decreases from the optimum
additional information
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The average structures of the thermophilic E.S complex at three different temperatures are obtained from the MD simulations. A snapshot of the most important features of the active site of the TtCM E.S complex at 70°C is shown. At this temperature the Boltzmann distribution is primarily composed of reactive conformers - near attack conformers (NACs). The effects of the different temperatures on the distances in the structure are shown. The distances between electrostatic and hydrophobic pairs decrease as temperature decreases
TEMPERATURE RANGE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
25 - 70
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studies that elucidate the dependence of the E-S active site on temperatures 25, 60 and 70°C
ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
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SwissProt
Manually annotated by BRENDA team
UNIPROT
ENTRY NAME
ORGANISM
NO. OF AA
NO. OF TRANSM. HELICES
MOLECULAR WEIGHT[Da]
SOURCE
SEQUENCE
LOCALIZATION PREDICTION?
AROH_THETH
122
0
13650
Swiss-Prot
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MOLECULAR WEIGHT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
15800
alpha3, 3 * 15800, SDS-PAGE
47590
gel filtration
SUBUNIT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
trimer
alpha3, 3 * 15800, SDS-PAGE
trimer
CRYSTALLIZATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
The corresponding positional fluctuations from the MD simulation are in good agreement with those obtained by X-ray crystallography
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TEMPERATURE STABILITY
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
100
half-life of 1.4 min
30
half-life of 61.7 min
50
half-life of 42.7 min
70
half-life of 8.1 min
80
half-life of 6.5 min
PURIFICATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
CLONED (Commentary)
ORGANISM
UNIPROT
LITERATURE
expression in Escherichia coli with a His-tag
REF.
AUTHORS
TITLE
JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
Helmstaedt, K.; Heinrich, G.; Merkl, R.; Braus, G.H.
Chorismate mutase of Thermus thermophilus is a monofunctional AroH class enzyme inhibited by tyrosine
Arch. Microbiol.
181
195-203
2004
Thermus thermophilus (Q84FH6), Thermus thermophilus
Manually annotated by BRENDA team
Zhang, X.; Bruice, T.C.
The proficiency of a thermophilic chorismate mutase enzyme is solely through an entropic advantage in the enzyme reaction
Proc. Natl. Acad. Sci. USA
102
18356-18360
2005
Thermus thermophilus
Manually annotated by BRENDA team
Zhang, X.; Bruice, T.C.
Temperature dependence of the structure of the substrate and active site of the Thermus thermophilus chorismate mutase E x S complex
Biochemistry
45
8562-8567
2006
Thermus thermophilus
Manually annotated by BRENDA team