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Protein Data Bank exchange dictionary (pdbx) version 1.0521
_em_icos_virus_shells.triangulation_num
Name:'_em_icos_virus_shells.triangulation_num'
Definition:
The triangulation number (T number) is a geometric and abstract concept that does not correspond to the structural components of an individul virus. It refers to the organisation of the geometric figure. The triangulation number, T is given by the following relationship: T= h*2 + hk +k*2, where h and k are positive integers which define the position of the five-fold vertex on the original hexagonal net.Example:
4 |
Type: int
Mandatory item: no
Category: em_icos_virus_shells