Table 1.

Significant key nodes of the PPI Network*.

Parameters	Gene Names
	Nitrogen Stress (BM)	Nitrogen Sufficient (NB)
(Hub + Large BC) nodes	argF, hisF, ecaA, eno, pyrG, pheT, pheS, glmS, proB	proA, aroA, aroK, ftsH, thrS, rpoA, ksgA, aspS, hisS, miaA
Hub nodes	argF, eno, hisF, pyrG, pheT, pheS, glmS, uppP, ecaA, deaD, tpiA, tufA, atpA, atpH, tkt, pckG, sucC, proB	ileS, rplC, glcB, gltX2, rnc, metS1, rplT, proA, aroA, aroK, ftsH, thrS, rpoA, ksgA, aspS, hisS, miaA
Large BC Nodes	argF, hisF, leuD1, dnaE, glmS, ddlA, tal, ureF, ureG, ureA, eno, pyrG, pheT, pheS, proB, ecaA	cobB, murE1, hbdA, ureB, hemZ, ABG93733.1 (fusA), rpoA, proA, aroA, aroK, ftsH, thrS, rpoA, ksgA, aspS, hisS, miaA

*As revealed by PPI network analysis (SM).