An Information Portal to Biological Macromolecular Structures
PDB Home |		Dictionary Resources Home  |  Dictionary  |  Category Groups  |  Categories  |  Items  |  Data

Item _em_virus_shells.triangulation_num

Description

   The triangulation number (T number) refers to the organisation 
    of the virus geometry. figure.

    It is given by the following relationship:
    T= h*2 + hk +k*2,  where h and k are positive integers that
    define the position of the five-fold vertex on the original 
    hexagonal net.

Category

Item Examples

Example 1:

4

Example 2:

131

Example 3:

1

Mandatory Code

Data Type Code

 

© RCSB PDB