>1rj4A (A:) observed residues (from ATOM records)
nnlvettckntpnyqlclktllsdkrsatgdittlalimvdaikakanqaavtisklrhs
nppaawkgplkncafsykviltaslpeaiealtkgdpkfaedgmvgssgdaqeceeyfkg
skspfsalniavhelsdvgraivrnll