>1czvB (B:) observed residues (from ATOM records)
cstplgmengkienkqitassfkkswwgdywepfrarlnaqgrvnawqakannnkqwlei
dllkikkitaiitqgckslssemyvksytihyseqgvewkpyrlkssmvdkifegntntk
ghvknffnppiisrfirvipktwnqsitlrlelfgcdiy