>2v3fA (A:) observed residues (from ATOM records)
efarpcipksfgyssvvcvcnatycdsfdppalgtfsryestrsgrrmelsmgpiqanht
gtgllltlqpeqkfqkvkgfggamtdaaalnilalsppaqnlllksyfseegigyniirv
pmascdfsirtytyadtpddfqlhnfslpeedtklkiplihralqlaqrpvsllaspwts
ptwlktngavngkgslkgqpgdiyhqtwaryfvkfldayaehklqfwavtaenepsagll
sgypfqclgftpehqrdfiardlgptlansthhnvrllmlddqrlllphwakvvltdpea
akyvhgiavhwyldflapakatlgethrlfpntmlfaseacvgskfweqsvrlgswdrgm
qyshsiitnllyhvvgwtdwnlalnpeggpnwvrnfvdspiivditkdtfykqpmfyhlg
hfskfipegsqrvglvasqkndldavalmhpdgsavvvvlnrsskdvpltikdpavgfle
tispgysihtylwhrql