>1sfrB (B:) observed residues (from ATOM records)
afsrpglpveylqvpspsmgrdikvqfqsgganspalylldglraqddfsgwdintpafe
wydqsglsvvmpvggqssfysdwyqpacgkagcqtykwetfltselpgwlqanrhvkptg
savvglsmaassaltlaiyhpqqfvyagamsglldpsqamgptliglamgdaggykasdm
wgpkedpawqrndpllnvgklianntrvwvycgngkpsdlggnnlpakflegfvrtsnik
fqdaynaggghngvfdfpdsgthsweywgaqlnamkpdlqralgatpn