Helicobacter pylori str. ATCC 43504

Helicobacter pylori str. ATCC 43504 is a microaerophilic, Gram-negative bacterium characterized by its spirilla shape and single-cell arrangement. This strain thrives optimally at a temperature of 37.0°C, which corresponds with the average human body temperature, underscoring its adaptation to a host-associated habitat. H. pylori is well-known for its colonization of the gastric epithelium in humans, where it can survive in the acidic environment of the stomach. The microaerophilic requirement indicates that this organism prefers low oxygen concentrations, which is typical of its ecological niche within the gastric mucus layer. This adaptation allows H. pylori to effectively evade the host's immune response and persist in the hostile gastric environment. The ability of H. pylori to maintain its structural integrity and metabolic functions under these conditions reflects its evolutionary specialization for survival in a unique ecological niche. This specialization may contribute to its role in various gastric conditions, although the specific pathogenic mechanisms and implications for human health associated with this strain are not detailed here. Understanding the physiological traits of H. pylori str. ATCC 43504 helps provide insights into its ecological dynamics and interactions within the human host.