Basic Info

Common NameS-Sulfocysteine(F05375)
2D Structure
Description

S-Sulfocysteine (SSC) is produced by reaction of inorganic sulfite and cystine by a yet unknown pathway and is a very potent NMDA-receptor agonist. Electrophysiological studies have shown that SSC displays depolarizing properties similar to glutamate. Patients affected with either Molybdenum cofactor deficiency (MOCOD, an autosomal recessive disease that leads to a combined deficiency of the enzymes sulphite oxidase, an enzyme that catalyzes the conversion of sulfite to inorganic sulfate, xanthine dehydrogenase and aldehyde oxidase) or isolated sulphite oxidase deficiency (ISOD, an extremely rare autosomal recessive disorder with identical clinical manifestations to MOCOD) excrete elevated levels of SSC. This rare disorder is associated with brain damage (seizures, spastic quadriplegia, and cerebral atrophy), mental retardation, dislocated ocular lenses, blindness, and excretion in the urine of abnormally large amounts of SSC, sulfite, and thiosulfate but no inorganic sulfate. (A15402, A15407).

FRCD IDF05375
CAS Number1637-71-4
PubChem CID115015
FormulaC3H7NO5S2
IUPAC Name

(2R)-2-amino-3-sulfosulfanylpropanoic acid

InChI Key

NOKPBJYHPHHWAN-REOHCLBHSA-N

InChI

InChI=1S/C3H7NO5S2/c4-2(3(5)6)1-10-11(7,8)9/h2H,1,4H2,(H,5,6)(H,7,8,9)/t2-/m0/s1

Canonical SMILES

C(C(C(=O)O)N)SS(=O)(=O)O

Isomeric SMILES

C([C@@H](C(=O)O)N)SS(=O)(=O)O

Synonyms
        
            Cysteine-S-sulfate
        
            S-Sulfocysteine
        
            S-Sulphocysteine
        
            S-Sulfo-L-cysteine
        
            Cysteine-S-sulfonate
        
            Cysteinyl-S-sulfonate
        
            L-Cysteine S-sulfate
        
            Cysteinyl-S-sulfonic acid
        
            S-sulpho-L-cysteine
        
            1637-71-4
        
Classifies
                

                  
                    Animal Toxin
                  

                
        
Update DateNov 13, 2018 17:07

Chemical Taxonomy

KingdomOrganic compounds
SuperclassOrganic acids and derivatives
ClassCarboxylic acids and derivatives
SubclassAmino acids, peptides, and analogues
Intermediate Tree NodesAmino acids and derivatives - Alpha amino acids and derivatives - Cysteine and derivatives - L-cysteine-S-conjugates
Direct ParentS-sulfo-L-cysteines
Alternative Parents
Molecular FrameworkAliphatic acyclic compounds
SubstituentsS-sulfo-l-cysteine - Alpha-amino acid - L-alpha-amino acid - S-alkyl thiosulfate - Amino acid - Carboxylic acid - Monocarboxylic acid or derivatives - Sulfenyl compound - Organic nitrogen compound - Hydrocarbon derivative - Organic oxide - Primary amine - Organosulfur compound - Organooxygen compound - Organonitrogen compound - Organopnictogen compound - Primary aliphatic amine - Organic oxygen compound - Carbonyl group - Amine - Aliphatic acyclic compound
DescriptionThis compound belongs to the class of organic compounds known as s-sulfo-l-cysteines. These are s-conjugated L-cysteine where the S-substituent is specified as a sulfo group.

Properties

Property NameProperty Value
Molecular Weight201.211
Hydrogen Bond Donor Count3
Hydrogen Bond Acceptor Count7
Rotatable Bond Count4
Complexity229
Monoisotopic Mass200.977
Exact Mass200.977
XLogP-4
Formal Charge0
Heavy Atom Count11
Defined Atom Stereocenter Count1
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Isotope Atom Count0
Covalently-Bonded Unit Count1

ADMET

Model Result Probability
Absorption
Blood-Brain BarrierBBB+0.8021
Human Intestinal AbsorptionHIA+0.7228
Caco-2 PermeabilityCaco2-0.6507
P-glycoprotein SubstrateNon-substrate0.8407
P-glycoprotein InhibitorNon-inhibitor0.9610
Non-inhibitor0.9974
Renal Organic Cation TransporterNon-inhibitor0.9616
Distribution
Subcellular localizationLysosome0.4491
Metabolism
CYP450 2C9 SubstrateNon-substrate0.8589
CYP450 2D6 SubstrateNon-substrate0.8165
CYP450 3A4 SubstrateNon-substrate0.7167
CYP450 1A2 InhibitorInhibitor0.7407
CYP450 2C9 InhibitorInhibitor0.6894
CYP450 2D6 InhibitorNon-inhibitor0.9266
CYP450 2C19 InhibitorInhibitor0.6533
CYP450 3A4 InhibitorNon-inhibitor0.9547
CYP Inhibitory PromiscuityLow CYP Inhibitory Promiscuity0.9953
Excretion
Toxicity
Human Ether-a-go-go-Related Gene InhibitionWeak inhibitor0.9717
Non-inhibitor0.9460
AMES ToxicityNon AMES toxic0.7246
CarcinogensCarcinogens 0.5469
Fish ToxicityHigh FHMT0.7551
Tetrahymena Pyriformis ToxicityLow TPT0.9598
Honey Bee ToxicityHigh HBT0.5510
BiodegradationReady biodegradable0.9383
Acute Oral ToxicityIII0.6341
Carcinogenicity (Three-class)Non-required0.6812

Model Value Unit
Absorption
Aqueous solubility-1.8732LogS
Caco-2 Permeability-0.5188LogPapp, cm/s
Distribution
Metabolism
Excretion
Toxicity
Rat Acute Toxicity1.8855LD50, mol/kg
Fish Toxicity1.8839pLC50, mg/L
Tetrahymena Pyriformis Toxicity-0.4996pIGC50, ug/L

Targets

Uniprot ID:
Q05586; Q12879; Q13224; Q14957; O15399; Q8TCU5; O60391
References
  1. Abbas AK, Xia W, Tranberg M, Wigstrom H, Weber SG, Sandberg M: S-sulfo-cysteine is an endogenous amino acid in neonatal rat brain but an unlikely mediator of cysteine neurotoxicity. Neurochem Res. 2008 Feb;33(2):301-7. Epub 2007 Sep 1. [17764028 ]
General Function:
Manganese ion binding
Specific Function:
This enzyme has 2 functions: it catalyzes the production of glutamine and 4-aminobutanoate (gamma-aminobutyric acid, GABA), the latter in a pyridoxal phosphate-independent manner (By similarity). Essential for proliferation of fetal skin fibroblasts.
Gene Name:
GLUL
Uniprot ID:
P15104
Molecular Weight:
42064.15 Da
References
  1. Moore W, Wiener HL, Meister A: Inactivation of gamma-glutamylcysteine synthetase, but not of glutamine synthetase, by S-sulfocysteine and S-sulfohomocysteine. J Biol Chem. 1987 Dec 15;262(35):16771-7. [2890640 ]
General Function:
Magnesium ion binding
Gene Name:
GCLC
Uniprot ID:
P48506
Molecular Weight:
72765.14 Da
References
  1. Moore W, Wiener HL, Meister A: Inactivation of gamma-glutamylcysteine synthetase, but not of glutamine synthetase, by S-sulfocysteine and S-sulfohomocysteine. J Biol Chem. 1987 Dec 15;262(35):16771-7. [2890640 ]