Chorismate lyase

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Chorismate lyase
Identifiers
EC no. 4.1.3.40
CAS no. 157482-18-3
Databases
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum
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PMC articles
PubMed articles
NCBI proteins

The enzyme chorismate lyase (EC 4.1.3.40) catalyzes the first step in ubiquinone biosynthesis, the removal of pyruvate from chorismate, to yield 4-hydroxybenzoate in Escherichia coli and other Gram-negative bacteria. [1] It belongs to the family of lyases, specifically the oxo-acid-lyases, which cleave carbon-carbon bonds. The systematic name of this enzyme class is chorismate pyruvate-lyase (4-hydroxybenzoate-forming). Other names in common use include CL, CPL, and UbiC.

Contents

This enzyme catalyses the chemical reaction: [2]

chorismate 4-hydroxybenzoate + pyruvate
The chorismate pyruvate lyase (CPL) catalyzed reaction. 72 2015 05 08 CPL.tif
The chorismate pyruvate lyase (CPL) catalyzed reaction.

Its activity does not require metal cofactors. [3]

Activity

Chorismate lyase
PDB 1tt8 EBI.jpg
chorismate lyase with product, 1.0 a resolution
Identifiers
SymbolChor_lyase
Pfam PF04345
Pfam clan CL0122
InterPro IPR007440
SCOP2 1jd3 / SCOPe / SUPFAM
Available protein structures:
Pfam   structures / ECOD  
PDB RCSB PDB; PDBe; PDBj
PDBsum structure summary

Catalytic activity

Enzymatic activity

Inhibited by:

Pathway

The pathway used is called the ubiquinone biosynthesis pathway, it catalyzes the first step in the biosynthesis of ubiquinone in E. coli. Ubiquinone is a lipid-soluble electron-transporting coenzyme. They are essential electron carriers in prokaryotes and are essential in aerobic organisms to achieve ATP synthesis. [4]

Nomenclature

There are several different names for chorismate lyase. It is also called chorismate pyruvate lyase (4-hydroxybenzoate-forming) and it is also abbreviated several different ways: CPL, CL, and ubiC. It is sometimes referred to as ubiC, because that is the gene name. This enzyme belongs to the class lyases; more specifically the ox-acid-lyase or the carbon-carbon-lyases. [5]

Taxonomic lineage:

  1. bacteria → proteobacteria → gammaproteobacteria → enterobacteriales → enterobacteriaceae → escherichia → Escherichia coli

Structure

This enzyme is a monomer. Its secondary structure contains helixes, turns, and beta-strands. It has a mass of 18,777 daltons and its sequence is 165 amino acids long. [5]

Binding sites

Mutagenesis

Related Research Articles

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<span class="mw-page-title-main">Mixed acid fermentation</span> Biochemical conversion of six-carbon sugars into acids in bacteria

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<span class="mw-page-title-main">Amino acid synthesis</span> The set of biochemical processes by which amino acids are produced

Amino acid synthesis is the set of biochemical processes by which the amino acids are produced. The substrates for these processes are various compounds in the organism's diet or growth media. Not all organisms are able to synthesize all amino acids. For example, humans can synthesize 11 of the 20 standard amino acids. These 11 are called the non-essential amino acids).

<span class="mw-page-title-main">Transsulfuration pathway</span>

The transsulfuration pathway is a metabolic pathway involving the interconversion of cysteine and homocysteine through the intermediate cystathionine. Two transsulfurylation pathways are known: the forward and the reverse.

In enzymology, a 4-hydroxybenzoate polyprenyltransferase is an enzyme that catalyzes the chemical reaction

<span class="mw-page-title-main">Isochorismate synthase</span>

Isochorismate synthase ( EC 5.4.4.2) is an isomerase enzyme that catalyzes the first step in the biosynthesis of vitamin K2 (menaquinone) in Escherichia coli.

<span class="mw-page-title-main">Cystathionine beta-lyase</span> Enzyme

Cystathionine beta-lyase, also commonly referred to as CBL or β-cystathionase, is an enzyme that primarily catalyzes the following α,β-elimination reaction

4-amino-4-deoxychorismate lyase is an enzyme that participates in folate biosynthesis by catalyzing the production of PABA by the following reaction

<span class="mw-page-title-main">Anthranilate synthase</span>

The enzyme anthranilate synthase catalyzes the chemical reaction

<span class="mw-page-title-main">Indole-3-glycerol-phosphate synthase</span> Class of enzymes

The enzyme indole-3-glycerol-phosphate synthase (IGPS) (EC 4.1.1.48) catalyzes the chemical reaction

<span class="mw-page-title-main">Aminodeoxychorismate synthase</span>

In enzymology, an aminodeoxychorismate synthase is an enzyme that catalyzes the chemical reaction

<span class="mw-page-title-main">3-dehydroquinate dehydratase</span> Class of enzymes

The enzyme 3-dehydroquinate dehydratase (EC 4.2.1.10) catalyzes the chemical reaction

<span class="mw-page-title-main">Chorismate synthase</span>

The enzyme chorismate synthase catalyzes the chemical reaction

The enzyme ectoine synthase (EC ) catalyzes the chemical reaction

In enzymology, a 1-deoxy-d-xylulose-5-phosphate synthase (EC 2.2.1.7) is an enzyme in the non-mevalonate pathway that catalyzes the chemical reaction

<span class="mw-page-title-main">DAHP synthase</span> Class of enzymes

3-Deoxy-D-arabinoheptulosonate 7-phosphate (DAHP) synthase is the first enzyme in a series of metabolic reactions known as the shikimate pathway, which is responsible for the biosynthesis of the amino acids phenylalanine, tyrosine, and tryptophan. Since it is the first enzyme in the shikimate pathway, it controls the amount of carbon entering the pathway. Enzyme inhibition is the primary method of regulating the amount of carbon entering the pathway. Forms of this enzyme differ between organisms, but can be considered DAHP synthase based upon the reaction that is catalyzed by this enzyme.

<span class="mw-page-title-main">UbiD protein domain</span>

In molecular biology this protein domain, refers to UbiD, which is found in prokaryotes, archaea and fungi, with two members in Archaeoglobus fulgidus. They are related to UbiD, a 3-octaprenyl-4-hydroxybenzoate carboxy-lyase from Escherichia coli that is involved in ubiquinone biosynthesis. The member from Helicobacter pylori has a C-terminal extension of just over 100 residues that is shared, in part, by the Aquifex aeolicus homologue.

<span class="mw-page-title-main">Isochorismate lyase</span>

Isochorismate pyruvate lyase is an enzyme responsible for catalyzing part of the pathway involved in the formation of salicylic acid. More specifically, IPL will use isochorismate as a substrate and convert it into salicylate and pyruvate. IPL is a PchB enzyme originating from the pchB gene in Pseudomonas aeruginosa.

<span class="mw-page-title-main">Dihydrodipicolinate synthase</span> Class of enzymes

4-Hydroxy-tetrahydrodipicolinate synthase (EC 4.3.3.7, dihydrodipicolinate synthase, dihydropicolinate synthetase, dihydrodipicolinic acid synthase, L-aspartate-4-semialdehyde hydro-lyase (adding pyruvate and cyclizing), dapA (gene)) is an enzyme with the systematic name L-aspartate-4-semialdehyde hydro-lyase (adding pyruvate and cyclizing; (4S)-4-hydroxy-2,3,4,5-tetrahydro-(2S)-dipicolinate-forming). This enzyme catalyses the following chemical reaction

References

  1. Nichols BP, Green JM (August 1992). "Cloning and sequencing of Escherichia coli ubiC and purification of chorismate lyase". J. Bacteriol. 174 (16): 5309–16. doi:10.1128/jb.174.16.5309-5316.1992. PMC   206367 . PMID   1644758.
  2. "EC 4.1.3.40".
  3. Siebert M, Severin K, Heide L (April 1994). "Formation of 4-hydroxybenzoate in Escherichia coli: characterization of the ubiC gene and its encoded enzyme chorismate pyruvate-lyase". Microbiology. 140 (4): 897–904. doi: 10.1099/00221287-140-4-897 . PMID   8012607.
  4. "KEGG PATHWAY: Ubiquinone and other terpenoid-quinone biosynthesis - Reference pathway". www.genome.jp. Retrieved 2021-04-09.
  5. 1 2 "UniprotID: P26602".

Further reading

This article incorporates text from the public domain Pfam and InterPro: IPR007440