>1xizB (B:) SEQRES residues namqdihfrrhyvrhlpkevsqndiikalasplindgmvvsdfadhvitreqnfptglpv epvgvaiphtdhkyvrqnaisvgilaepvnfedmggepdpvpvrvvfmlalgesnkqlnv lgwimdviqdedfmqqllvmnddeiyqsiytrisergev