>1iv4B (B:) SEQRES residues
mrigygedshrleegrplylcgllipspvgalahsdgdaamhaltdallsayglgdigll
fpdtdprwrgersevflreamrlveargakllqaslvltldrpklgphrkalvdslsrlm
rlpqdrigltfktseglapshvqaravvlldg