Data Item _space_group.IT_coordinate_system

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General

Item name: _space_group.IT_coordinate_system_code
Category name: space_group
Attribute name: IT_coordinate_system_code
Required in PDB entries: no
Used in currrent PDB entries: No

Item Description

A qualifier taken from the enumeration list identifying which setting in International Tables for Crystallography (3rd Edn) Vol. A (IT) is used. See IT Table 4.3.1 Section 2.16, Table 2.16.1 Section 2.16.(i) and Fig. 2.6.4. This item is not computer interpretable and cannot be used to define the coordinate system. Use _space_group.transform_* instead.

Data Type

Data type code: char
Data type detail: char item types / multi-word items ...
Primitive data type code: char
Regular expression: [][ \t_(),.;:"&<>/\{}'`~!@#$%?+=*A-Za-z0-9|^-]*

Controlled Vocabulary

View/Hide Table

Allowed Value	Details
-a1	monoclinic unique axis a, cell choice 1, -acb
-a2	monoclinic unique axis a, cell choice 2, -acb
-a3	monoclinic unique axis a, cell choice 3, -acb
-b1	monoclinic unique axis b, cell choice 1, c-ba
-b2	monoclinic unique axis b, cell choice 2, c-ba
-b3	monoclinic unique axis b, cell choice 3, c-ba
-c1	monoclinic unique axis c, cell choice 1, ba-c
-c2	monoclinic unique axis c, cell choice 2, ba-c
-c3	monoclinic unique axis c, cell choice 3, ba-c
-cba	orthorhombic
1	tetragonal or cubic origin choice 1
1-cba	orthorhombic origin choice 1
1a-cb	orthorhombic origin choice 1
1abc	orthorhombic origin choice 1
1ba-c	orthorhombic origin choice 1
1bca	orthorhombic origin choice 1
1cab	orthorhombic origin choice 1
2	tetragonal or cubic origin choice 2
2-cba	orthorhombic origin choice 2
2a-cb	orthorhombic origin choice 2
2abc	orthorhombic origin choice 2
2ba-c	orthorhombic origin choice 2
2bca	orthorhombic origin choice 2
2cab	orthorhombic origin choice 2
a-cb	orthorhombic
a1	monoclinic unique axis a, cell choice 1, abc
a2	monoclinic unique axis a, cell choice 2, abc
a3	monoclinic unique axis a, cell choice 3, abc
abc	orthorhombic
b1	monoclinic unique axis b, cell choice 1, abc
b2	monoclinic unique axis b, cell choice 2, abc
b3	monoclinic unique axis b, cell choice 3, abc
ba-c	orthorhombic
bca	orthorhombic
c1	monoclinic unique axis c, cell choice 1, abc
c2	monoclinic unique axis c, cell choice 2, abc
c3	monoclinic unique axis c, cell choice 3, abc
cab	orthorhombic
h	trigonal using hexagonal axes
r	trigonal using rhombohedral axes

Controlled Vocabulary at Deposition