cystathionine beta-synthase

(redirected from cysteine synthase)

cys·ta·thi·o·nine β-syn·thase

(sis'tă-thī'ō-nēn sin'thās),
An enzyme catalyzing the reversible hydrolysis of l-cystathionine to l-serine and l-homocysteine. A step in cysteine biosynthesis and in methionine catabolism. A deficiency of this enzyme leads to vascular thrombosis, dislocation of ocular lens, and abnormal development.
See also: cystathionine γ-synthase.

cystathionine β-synthase

/cys·ta·thi·o·nine β-syn·thase/ (sin´thās) a pyridoxal phosphate–containing lyase that catalyzes a step in the catabolism of methionine; deficiency occurs in an aminoacidopathy characterized by homocystinuria, elevated blood methionine levels, and abnormalities in the eye and the skeletal, nervous, and vascular systems.
References in periodicals archive ?
4), while other enzymes such as the Xaa-His dipeptidase, ornithine carbamoyl-transferase, a putative O-acetylserine lyase and cysteine synthase are involved in pathways of amino acid metabolism.
Molecular and biochemical analysis of serine acetyltransferase and cysteine synthase towards sulfur metabolism engineering.
Soybean OAS-TL contains the conserved PXXSVKDR motif that is characteristic of cysteine synthase.
Molecular cloning of a cysteine synthase cDNA from Arabidopsis thaliana.
Molecular cloning and bacterial expression of cDNA encoding plant cysteine synthase.
cDNA cloning and expression of cysteine synthase B localized in chloroplasts of Spinacea oleracea.
O-acetylserine (thiol) lyase] Modulation of cysteine biosynthesis in chloroplast of transgenic tobacco overexpressing cysteine synthase.
Isolation and characterization of cDNA that encodes a putative mitochondrion-localized of cysteine synthase [O-acetylserine (thiol) lyase] from Spinacea oleracea.
Molecular cloning and functional characterization of cDNAs encoding cysteine synthase and serine acetyltransferase that may be responsible for high cellular cysteine content in Allium tuberosum.
Separation, subecellular location and influence of sulphur nutrition on isoforms of cysteine synthase in spinach.

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