>2w4lF (F:) observed residues (from ATOM records)
krddylewpeyfmavaflsaqrskdpnsqvgacivnsenkivgigyngmpngcsddvlpw
rrtaenkldtkypyvchaelnaimndvkgcsmyvalfpcnecakliiqagikevifmsdk
yhdsdeataarllfnmagvtfrkfipkcskividfdsin