Data Item _symmetry.space_group_name_H-M
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General 
- Item name
- _symmetry.space_group_name_H-M
- Category name
- symmetry
- Attribute name
- space_group_name_H-M
- Required in PDB entries
- Used in current PDB entries
- Yes, in about 93.8 % of entries
Item Description
Hermann-Mauguin space-group symbol. Note that the H-M symbol does
not necessarily contain complete information about the symmetry
and the space-group origin. If used always supply the FULL symbol
from International Tables for Crystallography, Vol. A (1987) and
indicate the origin and the setting if it is not implicit. If
there is any doubt that the equivalent positions can be uniquely
deduced from this symbol specify the _symmetry_equiv.pos_as_xyz
or _symmetry.space_group_name_Hall data items as well. Leave
spaces between symbols referring to different axes.
Additional Descriptive Information for Depositors
Hermann-Mauguin space-group symbol. Note that the H-M symbol does
not necessarily contain complete information about the symmetry
and the space-group origin. In such a case, supply a full space
group name from International Tables for Crystallography,
Vol. A (1987).
Item Example1
P 1 21/m 1
Item Example2
P 2/n 2/n 2/n (origin at -1)
Item Example3
R -3 2/m
Additional Item Example for Depositors1
P 2
Additional Item Example for Depositors2
P 2 21 21
Additional Item Example for Depositors3
P 21
Additional Item Example for Depositors4
P 21 2 21
Additional Item Example for Depositors5
P 21 21 2
Data Type 
- Data type code
- line
- Data type detail
- char item types / multi-word items ...
- Primitive data type code
- char
- Regular expression
- [][ \t_(),.;:"&<>/\{}'`~!@#$%?+=*A-Za-z0-9|^-]*
Aliases
| Alias Item Name | Dictionary Name | Dictionary Version |
|---|---|---|
| _symmetry_space_group_name_H-M | cif_core.dic | 2.0.1 |