>4tlfB (B:) observed residues (from ATOM records)
lrldrlrqfigelatlldsrpdestllaqahpllaelvhqddwlpedcarpdpqryqqyl
lhvdsrqrfsvvsfvwgpgqitpvhdhrvwgligmlrgaeysqpyafdaggrphpsgarr
rlepgevealsprigdvhqvsnafsdrtsisihvyganigavrravfsaegeekpfisgy
snsrlpniwdlsk