Prokaryote

Borrelia burgdorferi

Gram-negative spirochete that causes Lyme disease, transmitted by ticks.

Candidatus Prometheoarchaeum syntrophicum

An archaeal bacterium with unknown gram status and shape, engages in syntrophic metabolism, may play a role in biogeochemical cycles.

Methanobrevibacter smithii

Rod-shaped archaeon, major component of the human gut microbiome, involved in the digestion of complex carbohydrates and methane production.

Cutibacterium (Propionibacterium) acnes

Gram-positive rod associated with acne, part of skin microbiota.

Lactococcus lactis

Gram-positive coccus used in the production of cheese and probiotics.

Bacteroides spp.

Gram-negative rods that are major components of human gut flora, important for digestion and health.

Helicobacter pylori

Gram-negative spiral bacterium associated with peptic ulcers and gastric cancer.

Salmonella enterica Typhimurium

Gram-negative rod, common cause of food poisoning.

Yersinia enterocolitica

Gram-negative rod that causes gastrointestinal infections.

Yersinia pseudotuberculosis

Gram-negative rod that causes a disease similar to tuberculosis.

Yersinia pestis

Gram-negative rod, the causative agent of the plague.

Campylobacter jejuni

Gram-negative spiral bacterium, leading cause of bacterial food poisoning.

Salmonella enterica Typhi

Gram-negative rod, causes typhoid fever.

O157H7 Escherichia coli

Gram-negative rod pathogenic strain causing severe foodborne illness.

Cryptosporidium parvum

Protozoa that causes crypto-sporidiosis, vital to public health.

Vibrio cholerae

Gram-negative comma-shaped bacterium, causative agent of cholera.

Shigella dysenteriae

Gram-negative rod, causes bacillary dysentery and diarrhea.

Neisseria gonorrhoeae

Gram-negative diplococcus, causative agent of gonorrhea, a significant STI.

Chlamydia trachomatis

Gram-negative coccus, causes chlamydia infection, the most prevalent STI.

Treponema pallidum

Gram-negative spirochete, causative agent of syphilis.

Nitrosomonas spp.

Gram-negative rods, important in the nitrogen cycle, converts ammonia to nitrites.

Rhizobium spp.

Gram-negative rods that form symbiotic relationships with legumes, fixing atmospheric nitrogen.

Thermus aquaticus

Gram-negative rod, source of Taq polymerase, widely used in PCR techniques.