>1fn4B (B:) SEQRES residues
qvqllesgpglvrpsetlsltctvsgfsltsfsvswvrhpsgkgpewmgrmwydgytayn
salksrlsisrdtsknqvflkmnslqtddtgtyyctrdlyggyplgfwyfdfwgpgtmvt
vssvfplapgsaaqtnsmvtlgclvkgyfpepvtvtwnsgalssgvhtfpavlqsglytl
tssvtvpsstwssqavtcnvahpasstkvdkkivprdc