PDB Chemical Component CYS

Ideal Model

Chemical Description

Name CYSTEINE
Formula C3 H7 N O2 S
Formal charge 0
Molecular weight 121.158 g/mol
Component type L-PEPTIDE LINKING

Chemical features

Atom count 14
Chiral atom count 1
Chiral atoms CA
Observed leaving atoms OXT H2 HXT
Bond count 13
Aromatic bond count 0

Chemical Identifiers

Systematic name (ACDLabs) L-cysteine
Systematic name (OpenEye OEToolkits) (2R)-2-amino-3-sulfanyl-propanoic acid

Chemical Descriptors

Stereo SMILES (CACTVS) N[C@@H](CS)C(O)=O
SMILES (CACTVS) N[CH](CS)C(O)=O
Stereo SMILES (OpenEye) C([C@@H](C(=O)O)N)S
InChI descriptor InChI=1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)/t2-/m0/s1
InChIKey descriptor XUJNEKJLAYXESH-REOHCLBHSA-N

Status Information

Last modified 2011-06-04
Created 1999-07-08
Release status REL
Replaces BTC
Processing site RCSB