Concept

Catenin

Summary
Catenins are a family of proteins found in complexes with cadherin cell adhesion molecules of animal cells. The first two catenins that were identified became known as α-catenin and β-catenin. α-Catenin can bind to β-catenin and can also bind filamentous actin (F-actin). β-Catenin binds directly to the cytoplasmic tail of classical cadherins. Additional catenins such as γ-catenin and δ-catenin have been identified. The name "catenin" was originally selected ('catena' means 'chain' in Latin) because it was suspected that catenins might link cadherins to the cytoskeleton. Types
  • α-catenin
  • β-catenin *γ-catenin
  • δ-catenin
All but α-catenin contain armadillo repeats. They exhibit a high degree of protein dynamics, alone or in complex. Function Several types of catenins work with N-cadherins to play an important role in learning and memory. Cell-cell adhesion complexes are required for simple epithelia in higher organisms to maintain structure, function and po
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