>1xyoB (B:) SEQRES residues etiqpgtgynngyfysywndghggvtytngpggqfsvnwsnsgnfvggkgwqpgtknkvi nfsgsynpngnsylsvygwsrnplieyyivenfgtynpstgatklgevtsdgsvydiyrt qrvnqpsiigtatfyqywsvrrnhrssgsvntanhfnawaqqgltlgtmdyqivavegyf ssgsasitvs