>pdb|1xet|A B C D MGSSHHHHHHSSGLVPRGSHMGGVDFEGFRKLQRADGFASILAIGTANPPNAVDQSTYPDFYFRITGNEHNTELKDKFKRICERSAIKQRYMYLTEEILKKNPDVCAFVEVPSLDARQAMLAMEVPRLAKEAAEKAIQEWGQSKSGITHLIFCSTTTPDLPGADFEVAKLLGLHPSVKRVGVFQHGCFAGGTVLRMAKDLAENNRGARVLVICSETTAVTFRGPSETHLDSLVGQALFGDGASALIVGADPIPQVEKACFEIVWTAQTVVPNSEGAIGGKVREVGLTFQLKGAVPDLISANIENCMVEAFSQFKISDWNKLFWVVHPGGRAILDRVEAKLNLDPTKLIPTRHVMSEYGNMSSACVHFILDQTRKASLQNGCSTTGEGLEMGVLFGFGPGLTIETVVLKSVPIQ