Abp1DRBD and Abp2DRBD receptor binding. (A) Competition experiments of labeled Abp1DRBD binding to BSM, competed against unlabeled Abp1DRBD, Abp1DRBD R86E, and Abp2DRBD. (B) Compounds 582 and 531 which represented the highest binders by microarray assay. (C) UPAB1 deletion and complementation mutants binding to untreated, mock-treated, and PNGase F-treated fibrinogen. Brown-Forsythe and Welch ANOVA tests. ****P ≤ 0.001, ***P ≤ 0.01, **P ≤ 0.01, *P ≤ 0.05.