Purity: >99% by scanning densitometry from Coomassie G-250 stained SDS-Gels.
Bundling activity: 2µM Atto565-Actin (Cat.#:8162-01) was incubated with Fascin at a molar ratio of 1:10 and 1:4.1 to verify bundling by fluorecence microscopy. All proteins were used as supplied, i.e. without dialysis. The actin stock solution was pre-spun 15min, 15.000xg, 4°C.
Low speed cosedimentation assay was performed (20,000xg, 30min) with rabbit skeletal muscle actin (Cat.#:8101-03) in the presence of sugars. At a molar ratio of 4. : 1 (actin : fascin), fascin was mixed with F-actin. After 30min at RT, the samples were used for low speed spinning. SDS-PAGE showed, that fascin was completely pelleted with F-actin.