>4v2pB (B:) observed residues (from ATOM records)
fslpfklaglgryvpedivlsselekkydlpqgwclekqgirerrwvkgetaafmgaeaa
keavrdaglqlsdidliisasgspqqavpdggplvqrelglgrsgtpaitvnasclsffv
alevasnylnmrryrrilvvsadiasvsldfrkpenftlfgdaaaaavvtlpepgeksci
hashlrtygfgaefsevrgggsrkppnskdtrpednylhmngaellkigfeylpkftesl
wkqcpditvrdvkyiiphqpsrvvldylslsypeekliriierfgncigasmpmalyeav
klrglqrgdkavltgtgsgvsfvgmvfty