>2prrA (A:) observed residues (from ATOM records)
ahpisrypvpelaalpddirqrilevqdkagfvpnvfltlahrpdefraffayhdalmlk
dggltkgeremivvatsaanqclycvvahgailriyekkplvadqvavnylkadipprqr
amldfalkvckashevneadfealrehgftdedawdiaaitaffglsnrmantigmrpnd
efflmgrvpk