In MTB belonging to the alpha proteobacteria, these 17 genes are mamH, E, K, M, O, P, A, Q, B, S, T, C, D, Z, X and mms6 and mmsF (gene names based on M. gryphiswaldense gene nomenclature).
Of the more than 100 types of HPV, there are more than 50 mucosal HPV types, all of them belonging to the alpha genus (27).
Rhizobiales is a prokaryotic order belonging to the alpha proteobacteria subdivision; some rhizobial species are intensively studied for their nitrogen-fixing ability when in symbiosis with leguminous plants.
HPV types belonging to the alpha genus (also known as super-group A) mainly infect the mucosal areas, whereas types in the beta genus (also known as supergroup B) mainly infect the cutaneous areas.
Rhodopseudomonas are rod-shaped, gram-negative, purple nonsulfur, anoxygenic, phototrophic bacteria belonging to the alpha subclass of the Proteobacteria that inhabits diverse natural habitats including soil and wastewater systems.
Sinorhizobium meliloti is a Gram-negative bacterium belonging to the alpha subclass of Proteobacteria, which can live either free in the soil, or in symbiotic association with roots of legume plants such as the model legume Medicago truncatula.
Thermophilic OTUs belonging to the alpha-, beta-, delta- and gammaproteobacteria were detected in both the samples but with variable abundance.
Apprill et al. (2009) suggested that the spawning coral Pocillopora meandrina acquired a specific bacterial associate, belonging to the alpha-proteobacterial subdivision, but to date, that is the only documented specific association between bacteria and early life stages of a coral.
These are intracellular, maternally-inherited bacteria belonging to the alpha-Proteobacteria group Rickettsia.
Another interesting example was CDC_144, whose domain patatin-like phospholipase (Pat17, belonging to the alpha-beta hydrolase family) showed a 1.5x increase compared to whole length protein.
We used a dataset comprising all completely sequenced genomes of organisms belonging to the alpha-proteobacteria for ortholog identification (Additional file 1, Table S1).
