>1swf_C mol:protein length:128 CIRCULARLY PERMUTED CORE-STREPTAVIDIN E51/A46MESRYVLTGRYDSAPATDGSGTALGWTVAWKNNYRNAHSATTWSGQYVGGAEARINTQWLLTSGTTEANAWKSTLVGHDTFTKVKPSAASGGGSAEAGITGTWYNQLGSTFIVTAGADGALTGTYESA