Data Item _chem_comp.mon_nstd_flag
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General 
- Item name
- _chem_comp.mon_nstd_flag
- Category name
- chem_comp
- Attribute name
- mon_nstd_flag
- Required in PDB entries
- no
- Used in current PDB entries
- Yes, in about 100.0 % of entries
Item Description
'yes' indicates that this is a 'standard' monomer, 'no'
indicates that it is 'nonstandard'. Nonstandard monomers
should be described in more detail using the
_chem_comp.mon_nstd_parent, _chem_comp.mon_nstd_class and
_chem_comp.mon_nstd_details data items.
Data Type 
- Data type code
- ucode
- Data type detail
- code item types/single words (case insensitive) ...
- Primitive data type code
- uchar
- Regular expression
- [_,.;:"&<>()/\{}'`~!@#$%A-Za-z0-9*|+-]*
- Default value
- no
Controlled Vocabulary
| Allowed Value | Details |
|---|---|
| n | abbreviation for "no" |
| no | the monomer is nonstandard |
| y | abbreviation for "yes" |
| yes | the monomer is standard |
Controlled Vocabulary at Deposition
| Allowed Value | Details |
|---|---|
| n | abbreviation for "no" |
| no | the monomer is nonstandard |
| y | abbreviation for "yes" |
| yes | the monomer is standard |