>2p4iB (B:) observed residues (from ATOM records)
gqvlkarirmdaaikrmkekddhrdfagelevlcklghhpniinllgacehylaieyaph
gnlldflrksrvletdpafaianstastlssqqllhfaadvargmdylsqkqfihrdlaa
rnilvgenyvakiadfglgrlpvrwmaieslnysvyttnsdvwsygvllweivslggtpy
cgmtcaelyeklpqgyrlekplncddevydlmrqcwrekpyerpsfaqilvslnrmleer
ktyvnttlyekftyagid