>4rr1B (B:) observed residues (from ATOM records)
mtpasynlavrraapavvnvynrgeirtlgsgvimdqrgyiitnkhvindadqiivalqd
grvfeallvgsdsltdlavlkinatgglptipinarrvphigdvvlaignnlgqtitqgi
isatgriglnptgrqnflqtdasinhgnsggalvnslgelmgintlegigfaipfqlatk
imdklirdgrvirgyigigggivvnevspdgpaanagiqvndliisvdnkpaisaletmd
qvaeirpgsvipvvvmqltlqvtiqeypatnhhhhhh