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However, little is known about the regional and cellular expression patterns of CBS in the ovary and research is now focused on determining the location and expression during follicle development in the ovaries. [18] Absence of Cystathionine beta synthase in mice provokes infertility due to the loss of uterine protein expression. [19]
In molecular biology, the CBS domain is a protein domain found in a range of proteins in all species from bacteria to humans. It was first identified as a conserved sequence region in 1997 and named after cystathionine beta synthase, one of the proteins it is found in. [2] CBS domains are also found in a wide variety of other proteins such as inosine monophosphate dehydrogenase, [3] voltage ...
Cystathionine is an intermediate in the synthesis of cysteine from homocysteine. It is produced by the transsulfuration pathway and is converted into cysteine by cystathionine gamma-lyase (CTH). Biosynthetically, cystathionine is generated from homocysteine and serine by cystathionine beta synthase (upper reaction in the diagram below).
Reaction 5 is catalyzed by cystathionine beta-synthase while reaction 6 is catalyzed by cystathionine gamma-lyase. The required homocysteine is synthesized from methionine in reactions 1, 2, and 3. The transsulfuration pathway is a metabolic pathway involving the interconversion of cysteine and homocysteine through the intermediate cystathionine.
Cysteine synthesis: Cystathionine beta synthase catalyzes the upper reaction and cystathionine gamma-lyase catalyzes the lower reaction. In animals, biosynthesis begins with the amino acid serine. The sulfur is derived from methionine, which is converted to homocysteine through the intermediate S-adenosylmethionine.
4524 17769 Ensembl ENSG00000177000 ENSMUSG00000029009 UniProt P42898 Q9WU20 RefSeq (mRNA) NM_005957 NM_001330358 NM_001161798 NM_010840 RefSeq (protein) NP_001317287 NP_005948 NP_001155270 NP_034970 Location (UCSC) Chr 1: 11.79 – 11.81 Mb Chr 4: 148.12 – 148.14 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Methylenetetrahydrofolate reductase (MTHFR) is the rate-limiting enzyme ...
Fish oil is a dietary supplement derived from the tissues of fatty fish, such as salmon, mackerel, sardines and anchovies. It’s a rich source of omega-3 fatty acids, specifically ...
Levomefolic acid (INN, also known as L-5-MTHF, L-methylfolate and L-5-methyltetrahydrofolate and (6S)-5-methyltetrahydrofolate, and (6S)-5-MTHF) is the primary biologically active form of folate used at the cellular level for DNA reproduction, the cysteine cycle and the regulation of homocysteine.