Figure 2.

Network of PII (GlnB) and its protein partners according to STRING (https://string-db.org). In this figure: proteins alr0990, alr0991, alr0992 are ammonium transporters, gltS is glutamate synthase, glnA is glutamine synthetase, nirA is ferredoxin-nitrite reductase, ntcA is a global nitrogen regulator and a transcriptional activator of genes, which are subjected to nitrogen control, icd is an isocitrate dehydrogenase, asr0485 is a PII interaction protein X and all2318 is the RNA-binding protein TAB2.