>2xu5A (A:) observed residues (from ATOM records)
aprsvdwrekgyvtpvknqgqcgscwafsatgalegqmfrktgrlislseqnlvdcsgpq
gnegcngglmdyafqyvqdnggldseesypyeateesckynpkysvandtgfvdipkqek
almkavatvgpisvaidaghesflfykegiyfepdcssedmdhgvlvvgygfednnkywl
vknswgeewgmggyvkmakdrrnhcgiasaasyptv