4tst

From Proteopedia

This is a reserved PDB id for testing purposes, used at the times when the Protein Data Bank was hosted at the Brookhaven National Laboratory. While developing and testing validation software and data management procedures, staff at the Brookhaven's PDB used 4tst as a safe, valid PDB id.

Some of the PDB staff on the years 1994-1998: Joel Sussman, Enrique Abola, Nancy O. Manning, David R. Stampf, John E. McCarthy, Jaime Prilusky