>1N43_1|Chains A, B, C, D|Streptavidin|Streptomyces avidinii (1895) AEAGITGTWYAQLGSTFIVTAGADGALTGTYESAVGNAESRYVLTGRYDSAPATDGSGTALGWTVAWKNNYRNAHSATTWSGQYVGGAEARINTQWLLTSGTTEANAWKSTLVGHDTFTKVKPSAAS