Recombinant Human RGS1 protein

Supplementary information

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

Regulator of G-protein signaling 1 (RGS1) also known as BL34 or 1R20 acts mechanically as a GTPase-activating protein (GAP) for Gα subunits of heterotrimeric G-proteins. This function speeds up the deactivation of G-proteins by converting GTP to GDP effectively stopping signal transduction. RGS1 has a molecular mass of approximately 25 kDa. This protein is mainly expressed in B and T lymphocytes and you can find it in lymphoid tissues such as the spleen and lymph nodes.

Biological function summary

The RGS1 protein modulates immune cell signaling thereby controlling cell migration and positioning. RGS1 plays a role in reducing signaling from chemokine receptors which affects the movement of lymphocytes within tissues. It does not significantly form part of a larger complex mostly acting independently to exert its function within the immune system.

Pathways

The regulatory activity of RGS1 heavily influences the chemokine signaling pathway and the G-protein coupled receptor (GPCR) signaling pathway. These pathways are important for the directional migration and activation of immune cells. Within these pathways RGS1 interacts with related proteins such as CXCR4 and Gα subunits modulating their signaling outputs to regulate immune cell responses.

RGS1 links to autoimmune diseases and certain cancers. It can modulate the immune response in diseases such as multiple sclerosis where its activity may affect immune cell movement and function. Connections also exist between RGS1 and CXCR4 within cancer pathology where altered signaling could contribute to tumor growth and metastasis. By affecting these pathways RGS1 becomes a potential target for therapeutic intervention in related disorders.