>1sxtB (B:) SEQRES residues sekseeinekdlrkkselqgtalgnlkqiyyynekaktenkeshdqflqhtilfkgfftd hswyndllvdfdskdivdkykgkkvdlygayygyqcaggtpnktacmyggvtlhdnnrlt eekkvpinlwldgkqntvpletvktnkknvtvqeldlqarrylqekynlynsdvfdgkvq rglivfhtstepsvnydlfgaqgqysntllriyrdnktinsenmhidiylyts