>3exrC (C:) observed residues (from ATOM records) qlpnlqvaldhsnlkgaitaavsvgnevdvieagtvcllqvgselvevlrslfpdkiiva dtkcadaggtvaknnavrgadwmtcicsatiptmkaarkaiedinpdkgeiqvelygdwt ydqaqqwldagisqaiyhqsrtwgekdlnkvkkliemgfrvsvtgglsvdtlklfegvdv ftfiagrgiteaknpagaarafkdeikriwg