PDB Chemical Component CSU

Ideal Model

Chemical Description

Name CYSTEINE-S-SULFONIC ACID
Formula C3 H7 N O5 S2
Formal charge 0
Molecular weight 201.221 g/mol
Component type L-PEPTIDE LINKING
Nonstandard Parent Id CYS

Chemical features

Atom count 18
Chiral atom count 1
Chiral atoms CA
Observed leaving atoms OXT H2 HXT
Bond count 17
Aromatic bond count 0

Chemical Identifiers

Systematic name (ACDLabs) 3-(sulfosulfanyl)-L-alanine
Systematic name (OpenEye OEToolkits) (2R)-2-amino-3-sulfosulfanyl-propanoic acid

Chemical Descriptors

Stereo SMILES (CACTVS) N[C@@H](CS[S](O)(=O)=O)C(O)=O
SMILES (CACTVS) N[CH](CS[S](O)(=O)=O)C(O)=O
Stereo SMILES (OpenEye) C([C@@H](C(=O)O)N)SS(=O)(=O)O
InChI descriptor 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
InChIKey descriptor NOKPBJYHPHHWAN-REOHCLBHSA-N

Status Information

Last modified 2023-11-03
Created 2000-08-22
Release status REL
Processing site RCSB