>1xu2B (B:) SEQRES residues kkhsvlhlvpvnitskadsdvtevmwqpvlrrgrgleaqgdivrvwdtgiyllysqvlfh dvtftmgqvvsregqgrretlfrcirsmpsdpdraynscysagvfhlhqgdiitvkipra naklslsphgtflgfvkl