>d2izlb_ b.61.1.1 (B:) Streptavidin {Streptomyces avidinii} aeagitgtwynqlgstfivtagadgaltgtyesavgnaesryvltgrydsapatdgsgta lgwtvawknnyrnahsattwsgqyvggaearintqwlltsgtteanawkstlvghdtftk vk