A single chain antibody that binds algae is described. The single chain antibody for algae is used to capture algae onto bioactive films. The single chain antibody is also used in a chimeric construct having a substrate binding domain and a single chain antibody domain. Dimers, trimmers, and multimer constructs are also described that aid in collection of algae from liquid mixtures by causing flocculation of algae cells.
STATEMENT OF GOVERNMENT RIGHTS
 This invention was made with government support under Grant No. DE-EE0003373 awarded by the United States Department of Energy. The government has certain rights in the invention.