PDB-REPRDB ( based on PDB Rel.#2003_10_01 )
(Last updated: October 10,2003)

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	5862	3935	3754	3731
=< 50	6608	5468	5360	5341
=< 70	7437	6475	6379	6359
=< 90	8784	7972	7885	7872

This table and representative chains were last updated at: 10 October 2003