SCAB_CC is the two coiled-coil, dimerisation domains of plant-specific actin-binding proteins or SCABs, CC1 and CC2, both of which contribute independently to dimerisation. CC1 is also required for actin binding, indicating that SCAB1 is a bivalent actin cross-linker. since CC1 adopts an antiparallel helical hairpin that further dimerises into a four-helix bundle. SCAB proteins bind, bundle and stabilise actin filaments and regulate stomatal movement [1],

1: Plant actin-binding protein SCAB1 is dimeric actin cross-linker with atypical pleckstrin homology domain. Zhang W, Zhao Y, Guo Y, Ye K; J Biol Chem. 2012;287:11981-11990. PMID:22356912