Table 1.

Overview of the three major skin bacterial genera [22, 23]

Genus	Phylum	Primary Nutrient Sources in Skin	Molecules that may mediate microbe-microbe or microbe-host interactions
Staphylococcus	Firmicutes	Sweat: Urea, ammonia, AAs, glucose Sebum: AAs SC: peptides	Lantibiotics, phenol-soluble modulin, adhesins, proteases
Corynebacterium	Actinobacteria	Sweat: Urea, ammonia, vitamins, glucose Sebum: lipids SC: lipids	Corynomycolic acids, free fatty acids
Propionibacterium	Actinobacteria	Sweat: AA, glucose Sebum: lipids, AA SC: peptides, lipids	Porphyrins, propionic acid, lipases, proteases

AA = amino acids, SC = stratum corneum