ppGpp is a bacterial cell size regulator.

Buke F, Grilli J, Cosentino Lagomarsino M, Bokinsky G, Tans SJ
Curr Biol. 2022 Feb 28;32(4):870-877.e5. doi: 10.1016/j.cub.2021.12.033. Epub 2022 Jan 5. PubMed Article

Plasmids from Article

ID	Plasmid	Purpose
175590	pRelA*	Tet inducible, KAN Resistant, fluor labelled (YFP) synthesis domain of the E. coli relA gene on a low copy backbone. Used to induce controllable synthesis of ppGpp in E. coli.
175591	pMesh1*	Lac inducible, AMP Resistant, fluor labelled (CFP) gene mesh1 from D. melanogaster on a low copy backbone. Used to induce controllable hydrolysis of ppGpp in E. coli.
175592	pYFP	Tet inducible, KAN Resistant, mVenus gene on a low copy backbone. Used as a negative control to the pRelA_YFP plasmid.
175593	pCFP	Lac inducible, AMP Resistant, cerulean gene on a low copy backbone. Used as a negative control to the pMesh1_CFP plasmid.
175594	pMesh1	Lac inducible, AMP Resistant, non labelled gene mesh1 from D. melanogaster on a low copy backbone. Used to induce controllable hydrolysis of ppGpp in E. coli.
175595	pRelA'	Tet inducible, KAN Resistant, non labelled synthesis domain of the E. coli relA gene on a low copy backbone. Used to induce controllable synthesis of ppGpp in E. coli.