Related Experiment Video
Updated: Jun 27, 2026

Spectrophotometric Determination of Phycobiliprotein Content in Cyanobacterium Synechocystis
Published on: September 11, 2018
PII, the key regulator of nitrogen metabolism in the cyanobacteria
1State Key Laboratory of Protein and Plant Genetic Engineering, College of Life Science, Peking University, Beijing, 100871, China.
Abstract:
PII proteins are a protein family important to signal transduction in bacteria and plants. PII plays a critical role in regulation of carbon and nitrogen metabolism in cyanobacteria. Through conformation change and covalent modification, which are regulated by 2-oxoglutarate, PII interacts with different target proteins in response to changes of cellular energy status and carbon and nitrogen sources in cyanobacteria and regulates cellular metabolism. This article reports recent progress in PII research in cyanobacteria and discusses the mechanism of PII regulation of cellular metabolism.
Related Concept Videos
Inorganic Nitrogen Assimilation
Bacterial Phylum Cyanobacteria
Microbes and the Nitrogen Cycle
Carbon-dioxide Fixation
Overview of Nitrogen Metabolism
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this nitrogen...
Anoxygenic Photosynthesis

