PDB-REPRDB ( based on PDB Rel.#2002_09_01 )
(Last updated: September 5,2002)

A Database of Representative Protein Chains from PDB (Protein Data Bank)

(see the document.)

Since 01/Apr/98

PDB-REPRDB Selection Criterion

Constraints to eliminate and arrange chains are here.
Each representative is different from all other representatives in terms of either
a ) Sequence similarity (ID% =< threshold1)

ID%:
Percentage of identical amino-acid residues between corresponding residue pairs in the two compared sequences.
OR
b ) 3-dimensional structures similarity (Dmax >= threshold2)

Dmax:
Maximum 'Ca'-distance between the corresponding residue pairs in the two compared structures.

Threshold sequence identity ID%	Number of chains
	Dmax (A)
	>= 10	>= 30	>= 50	infinity
=< 30	4858	3306	3168	3151
=< 50	5425	4519	4438	4423
=< 70	6127	5360	5286	5272
=< 90	7214	6569	6506	6496

This table and representative chains were last updated at: 5 September 2002