>4xcwF (F:) observed residues (from ATOM records)
qgmqtihigvlsasdrasdlsgkaiqevlseyllnplefhyeivaderdliekslikmcd
eyqcdlvvttggtgpalrditpeatkkvcqkmlpgfgelmrmtslkyvptailsrqsagi
rnksliinlpgkpksirecleavfpaipycvdlilgnymqvnekniqafrpkq