Ni²⁺ chemistry in pathogens--a possible target for eradication

Area of Science:

• Microbiology
• Biochemistry
• Pathogen Biology

Background:

• Nickel (Ni2+) homeostasis is essential for the survival of pathogens possessing urease and/or hydrogenase enzymes.
• Helicobacter pylori, a bacterium linked to stomach ulcers, relies on nickel metabolism for its survival.

Purpose of the Study:

• To describe the nickel (Ni2+) metabolism in Helicobacter pylori.
• To discuss nickel-binding proteins and the thermodynamics of nickel complexes.
• To identify potential nickel-binding sequences in chaperones and regulators and present a list of Ni2+ binding sites in various pathogens.

Main Methods:

• Literature review and synthesis of existing research on nickel metabolism in pathogens.
• Detailed discussion of nickel-binding proteins and thermodynamic properties of nickel complexes.
• Identification and compilation of potential nickel-binding sites across different pathogenic species.

Main Results:

• Nickel homeostasis is a critical factor for the survival of urease/hydrogenase-containing pathogens.
• Specific details of Ni2+ metabolism in Helicobacter pylori are elucidated.
• Potential nickel-binding sequences in chaperones and regulators were identified, alongside a catalog of Ni2+ binding sites in diverse pathogens.

Conclusions:

• Understanding nickel metabolism and binding is key to targeting pathogen survival.
• Further research is needed to fully comprehend the numerous nickel interactions in various pathogens.
• This work provides a foundation for exploring nickel-dependent pathways as potential antimicrobial targets.