>4BX5_1|Chains A, C|STREPTAVIDIN|STREPTOMYCES AVIDINII (1895) AEAGITGTWYAQLGDTFIVTAGADGALTGTYEAAVGDDDGDDDGDDDGAESRYVLTGRYDSAPATDGSGTALGWTVAWKNNYRNAHSATTWSGQYVGGAEARINTQWLLTSGTTEANAWKSTLVGHDTFTKVKPSAAS >4BX5_2|Chains B, D|STREPTAVIDIN|STREPTOMYCES AVIDINII (1895) AEAGITGTWYNQLGSTFIVTAGADGALTGTYESAVGNAESRYVLTGRYDSAPATDGSGTALGWTVAWKNNYRNAHSATTWSGQYVGGAEARINTQWLLTSGTTEANAWKSTLVGHDTFTKVKPSAAS