>2v49H (H:) observed residues (from ATOM records)
pkgvsvevapgrvkvkgpkgelevpvspemrvvveegvvrverpsderrhkslhgltrtl
ianavkgvsegyskellikgigyrarlvgraleltvgfshpvvveppegitfevpeptrv
rvsgidkqkvgqvaanirairkpsayhekgiyyagepvrl