PDB-REPRDB ( based on PDB Rel.#2002_07_14 )
(Last updated: July 22,2002)

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	4735	3229	3095	3078
=< 50	5293	4409	4330	4315
=< 70	5976	5229	5158	5144
=< 90	7044	6412	6349	6339

This table and representative chains were last updated at: 22 July 2002