>1xcbF (F:) observed residues (from ATOM records)
vpeaaisrlitylrileeleaqgvhrtsseqlgelaqvtafqvrkdlsyfgsygytvpvl
krelrhilglnrkwglcivgmgrlgsaladypgfgesfelrgffdvdpekvgrpvrggvi
ehvdllpqrvpgrieialltvpreaaqkaadllvaagikgilnfapvvlevpkevavenv
dflagltrlsfailnpkwre