Page last updated: 2024-10-06

Cysteine Biosynthesis

Proteins (13)

ProteinSynonymsTaxonomy
D-3-phosphoglycerate dehydrogenasePGDH; EC 1.1.1.95; 2-oxoglutarate reductase; 1.1.1.399Escherichia coli K-12
Phosphoserine phosphatasePSP; PSPase; EC 3.1.3.3; O-phosphoserine phosphohydrolaseEscherichia coli K-12
Phosphoserine aminotransferaseEC 2.6.1.52; Phosphohydroxythreonine aminotransferase; PSATEscherichia coli K-12
Cysteine synthase ACSase A; EC 2.5.1.47; O-acetylserine (thiol)-lyase A; OAS-TL A; O-acetylserine sulfhydrylase A; S-carboxymethylcysteine synthase; 4.5.1.5; Sulfate starvation-induced protein 5; SSI5Escherichia coli K-12
Phosphoadenosine phosphosulfate reductaseEC 1.8.4.8; 3'-phosphoadenylylsulfate reductase; PAPS reductase, thioredoxin dependent; PAPS sulfotransferase; PAdoPS reductaseEscherichia coli K-12
Adenylyl-sulfate kinaseEC 2.7.1.25; APS kinase; ATP adenosine-5'-phosphosulfate 3'-phosphotransferase; Adenosine-5'-phosphosulfate kinaseEscherichia coli K-12
Sulfate transporter CysZEscherichia coli K-12
Serine acetyltransferaseSAT; EC 2.3.1.30Escherichia coli K-12
Cysteine synthase BCSase B; EC 2.5.1.47; O-acetylserine (thiol)-lyase B; OAS-TL B; O-acetylserine sulfhydrylase BEscherichia coli K-12
Sulfite reductase [NADPH] hemoprotein beta-componentSiR-HP; SiRHP; EC 1.8.1.2Escherichia coli K-12
Sulfate adenylyltransferase subunit 2EC 2.7.7.4; ATP-sulfurylase small subunit; Sulfate adenylate transferase; SATEscherichia coli K-12
Sulfate adenylyltransferase subunit 1EC 2.7.7.4; ATP-sulfurylase large subunit; Sulfate adenylate transferase; SATEscherichia coli K-12
Sulfite reductase [NADPH] flavoprotein alpha-componentSiR-FP; EC 1.8.1.2Escherichia coli K-12

Compounds (26)

CompoundDescription
hydronium ion
Orthophosphate
thiosulfatesInorganic salts of thiosulfuric acid possessing the general formula R2S2O3.
acetic acidProduct of the oxidation of ethanol and of the destructive distillation of wood. It is used locally, occasionally internally, as a counterirritant and also as a reagent. (Stedman, 26th ed)
glutamic acidA non-essential amino acid naturally occurring in the L-form. Glutamic acid is the most common excitatory neurotransmitter in the CENTRAL NERVOUS SYSTEM.
NADH
cysteineA thiol-containing non-essential amino acid that is oxidized to form CYSTINE.
Adenosine TriphosphateAn adenine nucleotide containing three phosphate groups esterified to the sugar moiety. In addition to its crucial roles in metabolism adenosine triphosphate is a neurotransmitter.
adenosine diphosphateAdenosine 5'-(trihydrogen diphosphate). An adenine nucleotide containing two phosphate groups esterified to the sugar moiety at the 5'-position.
WaterA clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical formula is hydrogen oxide (H2O). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Coenzyme A
phosphohydroxypyruvic acid
phosphoserineThe phosphoric acid ester of serine.
sulfitesInorganic salts of sulfurous acid.
s-sulphocysteineresidues in physiologically significant proteins treated with sulfite; RN given refers to parent cpd; structure
adenosine 3'-phosphate-5'-phosphate
alpha-ketoglutaric acid
NADA coenzyme composed of ribosylnicotinamide 5'-diphosphate coupled to adenosine 5'-phosphate by pyrophosphate linkage. It is found widely in nature and is involved in numerous enzymatic reactions in which it serves as an electron carrier by being alternately oxidized (NAD+) and reduced (NADH). (Dorland, 27th ed)
serineA non-essential amino acid occurring in natural form as the L-isomer. It is synthesized from GLYCINE or THREONINE. It is involved in the biosynthesis of PURINES; PYRIMIDINES; and other amino acids.
3-phosphoglycerate
phosphoadenosine phosphosulfate3'-Phosphoadenosine-5'-phosphosulfate. Key intermediate in the formation by living cells of sulfate esters of phenols, alcohols, steroids, sulfated polysaccharides, and simple esters, such as choline sulfate. It is formed from sulfate ion and ATP in a two-step process. This compound also is an important step in the process of sulfur fixation in plants and microorganisms.
adenosine phosphosulfate5'-Adenylic acid, monoanhydride with sulfuric acid. The initial compound formed by the action of ATP sulfurylase on sulfate ions after sulfate uptake. Synonyms: adenosine sulfatophosphate; APS.
acetyl coenzyme aAcetyl CoA participates in the biosynthesis of fatty acids and sterols, in the oxidation of fatty acids and in the metabolism of many amino acids. It also acts as a biological acetylating agent.
creolinfrom refined coal tar oils
pyrophosphate
Slc7a2 protein, mouseRefSeq NM_007514