Human FZD2 (Frizzled 2) knockout HeLa cell lysate

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

Frizzled 2 (FZD2) is a member of the Frizzled receptor family which plays a role in the Wnt signaling pathway. FZD2 also known by alternate names like FzE2 and HFzd2r is a membrane-bound receptor with a mass of approximately 70 kDa. This protein is expressed in various tissues including the brain heart and lungs indicating its involvement in multiple cellular processes. The receptor contains a distinct structure comprising seven transmembrane domains which facilitates its interaction with other molecules and downstream signaling components.

Biological function summary

FZD2 acts as a critical mediator within the Wnt signaling pathway and it often functions as part of the Frizzled receptor complex. This protein binds to secreted Wnt ligands initiating intracellular signaling cascades that regulate cell fate proliferation and differentiation. Through these interactions FZD2 influences embryonic development and tissue homeostasis. The receptor's role in these fundamental processes highlights its importance in maintaining proper cellular and organismal function.

Pathways

FZD2 participates in the canonical Wnt/β-catenin and non-canonical Wnt signaling pathways. In the canonical pathway FZD2 assists in the stabilization and accumulation of β-catenin in the cytoplasm which ultimately translocates to the nucleus to regulate gene expression. In the non-canonical pathway FZD2 plays a part in the planar cell polarity and Wnt/Ca2+ pathways. Proteins like Dishevelled (DVL) and LRP5/6 are closely related to FZD2 facilitating its role in diverse signaling events important for development and cellular dynamics.

FZD2's involvement in the Wnt signaling pathway associates it with conditions like cancer and osteoporosis. Aberrant FZD2 signaling can contribute to tumorigenesis since alterations in Wnt pathways often lead to uncontrolled cell division and cancer progression. Similarly defects in Wnt-mediated bone formation can link FZD2 to osteoporosis. In these contexts FZD2 interacts with proteins such as β-catenin and Dkk1 which help mediate its effects on disease pathogenesis and progression.