>4rxcB (B:) observed residues (from ATOM records)
mpmqmfmqvydeiqmflleelelkfdmdpnrvrylrkmmdttclggkynrgltvidvaes
llsdgarrkrvlhdacvcgwmieflqahylveddimdnsvtrrgkpcwyrhpdvtvqcai
ndglllkswthmmamhffadrpflqdllcrfnrvdyttavgqlydvtsmfdsnkldpdvs
qpdfaeftlsnykrivkyktayytyllplvmglivsealptvdmgvteelamlmgeyfqv
qddvmdcftpperlgkvgtdiqdakcswlavtflakassaqvaefkanygsgdsekvatv
rrlyeeadlqgdyvayeaavaeqvkelieklrlcspgfaasvetlwgktykr