>2btuB (B:) SEQRES residues
manaykqagvdieagyeavsrmkkhvqttmrkevlgglggfggmfdlskfaleepvlvsg
tdgvgtklmlafmadkhdtigidavamcvndivvqgaeplffldyiacgkaepskieniv
kgisegcrqagcaliggetaempgmysteeydlagftvgivdkkkivtgekieaghvlig
lassgihsngyslvrkvlledgelsldriygrlelplgeellkptkiyvkpilellknhe
vygmahitgggfieniprmlpegigaeielgswkiqpifsllqevgkleekemfnifnmg
igmvvavkeedakdivrlleeqgetariigrtvqgagvtfnggkal