>2rexB (B:) observed residues (from ATOM records)
rcklvlvgdvqcgktamlqvlakdcypetyvptvfenytacleqrvelslwdtsgspyyd
nvrplcysdsdavllcfdisrpetvalkkwrteildycpstrvlligcktdlrtdlstlm
elshqkqapisyeqgcaiakqlgaeiylegsaftseksihsifrtasmlcl