>1xfsB (B:) SEQRES residues
msttpidaeldlmlkrelavpvnlvwrgltepellkkwfvpkpwsisdcrvdlrpggefy
tvmqdpegnkfpnsgcflevtdekrliwtsalvknyrpavpattsdkecahivmtaviel
qptssgtrytacamhntpgqrklheemgfhegwgttitqleellkqekaylehhhhhh