Identification and characterization of alkaline phosphatase gene in PCC7806.

PhoX is an extracellular alkaline phosphatase that is widely found in cyanobacteria and plays an important role in the conversion of extracellular organophosphorus into soluble inorganic phosphorus. However, the gene has not yet been experimentally confirmed to exist in bloom-forming species. In this study, we identified a putative gene (GenBank accession no.

Microcystin-LR heterologous genetically engineered antibody recombinant and its binding activity improvement and application in immunoassay.

Microcystin-LR (MC-LR) is a high-toxic biohazard that pollutes ecological environment and agroproducts. In this study, a newly recombined genetically engineered antibody (AV-MV) with higher thermal stability and binding activity was designed by chain shuffling and based on our previously obtained anti-MC-LR scFv and nanobody. Based on AV-MV template, a capacity of 8.

Response of extracellular and intracellular alkaline phosphatase in Microcystis aeruginosa to organic phosphorus.

Cyanobacterial blooms caused by Microcystis have become a menace to public health and water quality in the global freshwater ecosystem. Alkaline phosphatases (APases) produced by microorganisms play an important role in the mineralization of dissolved organic phosphorus (DOP) into orthophosphate (Pi) to promote cyanobacterial blooms. However, the response of extracellular and intracellular alkaline phosphatase activity (APA) of Microcystis to different DOP sources is poorly understood.

Cell wall surface layer (S-layer) promotes colony formation in Microcystis: comparison of S-layer characteristics between colonial and unicellular forms of Microcystis and function conformation.

Colony is a key to Microcystis becoming a dominant population and forming blooms. To find the mechanism of colony formation, we investigated cell wall structures of colonial and unicellular strains. Results showed that colonial strains had significant surface layer protein (S-layer) on the surface of cells than unicellular strains by transmission electron microscopy.