Data Category pdbx_validate_chiral
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General 
- Category name
- pdbx_validate_chiral
- Required in PDB entries
- no
- Category group membership
- pdbx_group validate_group
- Used in current PDB entries
- Yes, in about 3.3 % of entries
Category Relationship Diagrams 
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View abbreviated category relationship diagram including only those categories used in current PDB entries.
Category Description
Data items in the PDBX_VALIDATE_CHIRAL category list the
residues that contain unexpected configuration of chiral
centers.
IMPROPER HA N C CB chirality CA
IMPROPER HB1 HB2 CA CG stereo CB
as this number approaches (+) or (-) 180.0, then the
error in predicting the true chirality of the center increases.
Improper dihedrals are a measure of the chirality/planarity of the
structure at a specific atom. Values around -35 or +35 are expected
for chiral atoms, and values around 0 for planar atoms.
HERE improper C---N----CA---CB done
expected answer is around -120 mean -122.52
D-amino acid is +120.0
Category Example
loop_ _pdbx_validate_chiral.id _pdbx_validate_chiral.PDB_model_num _pdbx_validate_chiral.auth_comp_id _pdbx_validate_chiral.auth_asym_id _pdbx_validate_chiral.auth_seq_id _pdbx_validate_chiral.PDB_ins_code _pdbx_validate_chiral.details _pdbx_validate_chiral.omega 1 0 B ASP 405 . ALPHA-CARBON 150.48
Key Data Items 
Category Data Items
- _pdbx_validate_chiral.id
- _pdbx_validate_chiral.PDB_ins_code
- _pdbx_validate_chiral.PDB_model_num
- _pdbx_validate_chiral.auth_asym_id
- _pdbx_validate_chiral.auth_atom_id
- _pdbx_validate_chiral.auth_comp_id
- _pdbx_validate_chiral.auth_seq_id
- _pdbx_validate_chiral.details
- _pdbx_validate_chiral.label_alt_id
- _pdbx_validate_chiral.omega