pfam09442: DUF2018 (This model is not part of the current CDD release)
Domain of unknown function (DUF2018)
Acid-adaptive protein possibly of physiological significance when H.pylori colonises the human stomach, which adopts a unique four alpha-helical triangular conformations. The biologically active form is thought to be a tetramer. The protein is expressed along with six other proteins, some of which are related to iron storage and haem biosynthesis.
Jiyao W et al.(2023). "The conserved domain database in 2023.",