Hawkinsin

Hawkinsin (also known as 2-cystenyl-1,4-dihydroxycyclohexenylacetate^[1]) is an amino acid, which is formed after detoxification of a reactive tyrosine metabolite (quinol acetate) by glutathione. Hawkinsin is ninhydrin positive (a common test to detect amino acids and proteins with a free -NH₂ group).

Hawkinsin

Names
IUPAC name 2-Amino-3-[[2-(carboxymethyl)-2,5-dihydroxy-1-cyclohex-3-enyl]sulfanyl]propanoic acid
Other names (2-L-Cystein-S-yl-1,4-dihydroxycyclohex-5-en-1-yl)acetic acid
Identifiers
CAS Number	63224-90-8^Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:149584
PubChem CID	173909
SMILES C1C(C=CC(C1SCC(C(=O)O)N)(CC(=O)O)O)O
Properties
Chemical formula	C11H17NO6S
Molar mass	291.32 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is ^YN ?) Infobox references

It is found in elevated concentrations in the urine in hawkinsinuria, which is probably related to the depletion of glutathione and resulting high excretion of 5-oxoproline.^[2]

References

1. Physician's guide to the diagnosis, treatment, and follow-up of inherited metabolic diseases. Blau, N. (Nenad), 1946-, Duran, Martinus,, Gibson, K. Michael,, Dionisi-Vici, Carlo. Berlin. 2014-07-08. ISBN 9783642403378. OCLC 874142358.{{cite book}}: CS1 maint: location missing publisher (link) CS1 maint: others (link)
2. Physician's guide to the diagnosis, treatment, and follow-up of inherited metabolic diseases. Blau, N. (Nenad), 1946-, Duran, Martinus,, Gibson, K. Michael,, Dionisi-Vici, Carlo. Berlin. 2014-07-08. ISBN 9783642403378. OCLC 874142358.{{cite book}}: CS1 maint: location missing publisher (link) CS1 maint: others (link)