PDBx/mmCIF
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Data Item
_cell.angle_alpha
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Supporting Data
General
Item name
_cell.angle_alpha
Category name
cell
Attribute name
angle_alpha
Required in PDB entries
no
Used in current PDB entries
Yes, in about 93.9 % of entries
Item Description
Unit-cell angle alpha of the reported structure in degrees.
Data Type
Data type code
float
Data type detail
float item types are the subset of numbers that are the floating numbers.
Primitive data type code
numb
Regular expression
-?(([0-9]+)[.]?|([0-9]*[.][0-9]+))([(][0-9]+[)])?([eE][+-]?[0-9]+)?
Default value
90.0
Units
degrees
Allowed Boundary Conditions
Minimum Value
Maximum Value
0.0
180.0
Related Items
Related Item Name
Relation Type
_cell.angle_alpha_esd
associated_esd
Dependent Items
_cell.angle_beta
_cell.angle_gamma
Subcategories
Subcategory Name
Subcategory Description
cell_angle
The collection of alpha, beta, and gamma angles of a unit cell.
Aliases
Alias Item Name
Dictionary Name
Dictionary Version
_cell_angle_alpha
cif_core.dic
2.0.1