>1xtrA (A:) SEQRES residues mpqsksrkiailgyrsvgkssltiqfvegqfvdsydptientftklitvngqeyhlqlvd tagqdeysifpqtysidingyilvysvtsiksfevikvihgklldmvgkvqipimlvgnk kdlhmervisyeegkalaeswnaaflessakenqtavdvfrriileaeklehhhhhh