>4htzB (B:) observed residues (from ATOM records)
deytkllhdgiqpvaaidsnfasftytprslpeddtsmailsmlqdmnfinnykidcptl
arfclmvkkgyrdppyhnwmhafsvshfcyllyknleltnyledieifalfiscmchdld
hrgtnnsfqvasksvlaalyssegsvmerhhfaqaiailnthgcnifdhfsrkdyqrmld
lmrdiilatdlahhlrifkdlqkmaevgydrnnkqhhrlllcllmtscdlsdqtkgwktt
rkiaeliykeffsqgdlekamgnrpmemmdrekayipelqisfmehiampiykllqdlfp
kaaelyervasnrehwtkvshkftirglpsnnsldfl