>2btoB (B:) observed residues (from ATOM records)
vnntivvsigqagnqiaasfwktvclehgidpltgqtapgvaprgnwssffsklgesssg
syvpraimvdlepsvidnvkatsgslfnpanlisrtegaggnfavgylgagrevlpevms
rldyeidkcdnvggiivlhaigggtgsgfgallieslkekygeipvlscavlpspvtepy
ntvfalntlrrsadaclifdnealfdlahrkwniesptvddlnllitealagitasmrfs
gfltveislrelltnlvpqpslhflmcafapltppdrskfeelgieemikslfdngsvfa
acspmegrflstavlyrgimedkpladaalaamreklpltiptafkigyveqpgishrks
mvllannteiarvldrichnfdklwqrkafanwylnegmseeqinvlrasaqelvqsyqv
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