>2w4lA (A:) observed residues (from ATOM records)
ckkrddylewpeyfmavaflsaqrskdpnsqvgacivnsenkivgigyngmpngcsddvl
pwrrtaenkldtkypyvchaelnaimndvkgcsmyvalfpcnecakliiqagikevifms
dkyhdsdeataarllfnmagvtfrkfipkcskividfdsi