Carotenoid 1,2-hydratase

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Carotenoid 1,2-hydratase
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EC no. 4.2.1.131
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Carotenoid 1,2-hydratase (EC 4.2.1.131, CrtC) is an enzyme with systematic name lycopene hydro-lyase (1-hydroxy-1,2-dihydrolycopene-forming). [1] [2] This enzyme catalyses the following chemical reaction

(1) 1-hydroxy-1,2-dihydrolycopene lycopene + H2O
(2) 1,1'-dihydroxy-1,1',2,2'-tetrahydrolycopene 1-hydroxy-1,2-dihydrolycopene + H2O

In Rubrivivax gelatinosus and Thiocapsa roseopersicina both products are formed.

Related Research Articles

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1-Hydroxycarotenoid 3,4-desaturase is an enzyme with systematic name 1-hydroxy-1,2-dihydrolycopene:acceptor oxidoreductase. This enzyme catalyses the following chemical reaction

Phytoene desaturase (neurosporene-forming) is an enzyme with systematic name 15-cis-phytoene:acceptor oxidoreductase (neurosporene-forming). This enzyme catalyses the following chemical reaction

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<span class="mw-page-title-main">Phytoene desaturase (lycopene-forming)</span>

Phytoene desaturase (lycopene-forming) are enzymes found in archaea, bacteria and fungi that are involved in carotenoid biosynthesis. They catalyze the conversion of colorless 15-cis-phytoene into a bright red lycopene in a biochemical pathway called the poly-trans pathway. The same process in plants and cyanobacteria utilizes four separate enzymes in a poly-cis pathway.

<span class="mw-page-title-main">Magnesium-protoporphyrin IX monomethyl ester (oxidative) cyclase</span> Class of enzymes

Magnesium-protoporphyrin IX monomethyl ester (oxidative) cyclase, is an enzyme with systematic name magnesium-protoporphyrin-IX 13-monomethyl ester, ferredoxin:oxygen oxidoreductase (hydroxylating). In plants this enzyme catalyses the following overall chemical reaction

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<span class="mw-page-title-main">Chlorophyllide</span> Chemical compound

Chlorophyllide a and Chlorophyllide b are the biosynthetic precursors of chlorophyll a and chlorophyll b respectively. Their propionic acid groups are converted to phytyl esters by the enzyme chlorophyll synthase in the final step of the pathway. Thus the main interest in these chemical compounds has been in the study of chlorophyll biosynthesis in plants, algae and cyanobacteria. Chlorophyllide a is also an intermediate in the biosynthesis of bacteriochlorophylls.

References

  1. Steiger S, Mazet A, Sandmann G (June 2003). "Heterologous expression, purification, and enzymatic characterization of the acyclic carotenoid 1,2-hydratase from Rubrivivax gelatinosus". Archives of Biochemistry and Biophysics. 414 (1): 51–8. doi:10.1016/s0003-9861(03)00099-7. PMID   12745254.
  2. Hiseni A, Arends IW, Otten LG (August 2011). "Biochemical characterization of the carotenoid 1,2-hydratases (CrtC) from Rubrivivax gelatinosus and Thiocapsa roseopersicina". Applied Microbiology and Biotechnology. 91 (4): 1029–36. doi:10.1007/s00253-011-3324-1. PMC   3145076 . PMID   21590288.