Target General Infomation
Target ID
T85309
Former ID
TTDR00526
Target Name
Cystathionine beta-synthase
Gene Name
CBS
Synonyms
Beta-thionase; Serine sulfhydrase; CBS
Target Type
Research
Function
Only known pyridoxal phosphate-dependent enzyme that contains heme. Important regulator of hydrogen sulfide, especially in the brain, utilizing cysteine instead of serine to catalyze the formation of hydrogen sulfide. Hydrogen sulfide is a gastratransmitter with signaling and cytoprotective effects such as acting as a neuromodulator in the brain to protect neurons against hypoxic injury (By similarity).
BioChemical Class
Carbon-oxygen lyases
UniProt ID
EC Number
EC 4.2.1.22
Sequence
MPSETPQAEVGPTGCPHRSGPHSAKGSLEKGSPEDKEAKEPLWIRPDAPSRCTWQLGRPA
SESPHHHTAPAKSPKILPDILKKIGDTPMVRINKIGKKFGLKCELLAKCEFFNAGGSVKD
RISLRMIEDAERDGTLKPGDTIIEPTSGNTGIGLALAAAVRGYRCIIVMPEKMSSEKVDV
LRALGAEIVRTPTNARFDSPESHVGVAWRLKNEIPNSHILDQYRNASNPLAHYDTTADEI
LQQCDGKLDMLVASVGTGGTITGIARKLKEKCPGCRIIGVDPEGSILAEPEELNQTEQTT
YEVEGIGYDFIPTVLDRTVVDKWFKSNDEEAFTFARMLIAQEGLLCGGSAGSTVAVAVKA
AQELQEGQRCVVILPDSVRNYMTKFLSDRWMLQKGFLKEEDLTEKKPWWWHLRVQELGLS
APLTVLPTITCGHTIEILREKGFDQAPVVDEAGVILGMVTLGNMLSSLLAGKVQPSDQVG
KVIYKQFKQIRLTDTLGRLSHILEMDHFALVVHEQIQYHSTGKSSQRQMVFGVVTAIDLL
NFVAAQERDQK
Inhibitor aminooxyacetic acid Drug Info [543420]
Heme Drug Info [551374]
Pathways
BioCyc Pathway Hydrogen sulfide biosynthesis (trans-sulfuration)
Cysteine biosynthesis/homocysteine degradation (trans-sulfuration)
Superpathway of methionine degradation
Cysteine biosynthesis
KEGG Pathway Glycine, serine and threonine metabolism
Cysteine and methionine metabolism
Metabolic pathways
Biosynthesis of antibiotics
Biosynthesis of amino acids
NetPath Pathway TGF_beta_Receptor Signaling Pathway
PANTHER Pathway Cysteine biosynthesis
PathWhiz Pathway Selenoamino Acid Metabolism
Homocysteine Degradation
Methionine Metabolism
Glycine and Serine Metabolism
WikiPathways Vitamin D Receptor Pathway
Metabolism of amino acids and derivatives
Trans-sulfuration and one carbon metabolism
Trans-sulfuration pathway
Folate Metabolism
Folate-Alcohol and Cancer Pathway
Vitamin B12 Metabolism
Selenium Micronutrient Network
References
Ref 543420(http://www.guidetopharmacology.org/) Nucleic Acids Res. 2015 Oct 12. pii: gkv1037. The IUPHAR/BPS Guide to PHARMACOLOGY in 2016: towards curated quantitative interactions between 1300 protein targets and 6000 ligands. (Target id: 1443).
Ref 551374The Protein Data Bank. Nucleic Acids Res. 2000 Jan 1;28(1):235-42.

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