The TIKI/TraB/PrgY family: a common protease fold for cell signaling from bacteria to metazoa?

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J Fernando Bazan1, Bryan T Macdonald, Xi He

  • 14(th) and Aspen Life Sciences, Stillwater, MN 55082, USA. jfbazan@4thandaspen.com

Developmental Cell
|May 16, 2013
PubMed

Insights

The Wnt signaling inhibitor TIKI in animals is homologous to bacterial proteins that regulate antibiotic resistance spread. This suggests an ancient metalloprotease family controls cell communication across life.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Microbiology

Background:

  • The Wnt pathway is crucial for animal development and cellular communication.
  • Bacterial TraB/PrgY proteins regulate conjugation, a key mechanism for antibiotic resistance dissemination.

Purpose of the Study:

  • To investigate the evolutionary and functional relationship between metazoan Wnt pathway components and bacterial signaling proteins.
  • To identify potential conserved mechanisms in cellular communication across different biological kingdoms.

Main Methods:

  • Sequence homology analysis comparing TIKI proteins with bacterial TraB/PrgY.
  • Bioinformatic analysis to identify conserved domains and structural features.
  • Phylogenetic analysis to infer evolutionary relationships.

Main Results:

  • TIKI proteins share significant sequence homology with bacterial TraB/PrgY proteins.
  • These homologous proteins belong to an ancient metalloprotease clan.
  • The findings suggest a conserved role in regulating intercellular communication.

Conclusions:

  • TIKI and TraB/PrgY represent an ancient metalloprotease family.
  • This family plays a conserved role in regulating cellular communication.
  • The study bridges understanding of signaling pathways in metazoans and bacteria.

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