>1c4xA (A:) observed residues (from ATOM records)
tveiiekrfpsgtlashalvagdpqspavvllhgagpgahaasnwrpiipdlaenffvva
pdligfgqseypetypghimswvgmrveqilglmnhfgiekshivgnsmggavtlqlvve
aperfdkvalmgsvgapmnarppelarllafyadprltpyrelihsfvydpenfpgmeei
vksrfevandpevrriqevmfesmkagmeslvippatlgrlphdvlvfhgrqdrivpldt
slyltkhlkhaelvvldrcghwaqlerwdamgpmlmehfra