HCLS1 overexpression 293T lysate (whole cell)

Supplementary information

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

The hematopoietic cell-specific Lyn substrate 1 commonly known as HCLS1 or HS1 is a cytoskeletal protein involved in cell signaling. It has a molecular mass of approximately 75 kDa and is expressed predominantly in hematopoietic cells such as lymphocytes and myeloid cells. HCLS1 functions as an adaptor protein playing an important role in the reorganization of the actin cytoskeleton which is critical for cell motility and morphology.

Biological function summary

The protein is important for signal transduction processes in immune cells particularly during the immune response. HCLS1 becomes phosphorylated upon cell activation allowing it to associate with other signaling proteins. It forms complexes with various partners like Lyn kinase and other SH2-containing proteins facilitating cytoskeletal rearrangement and cellular interactions necessary for effective immune function.

Pathways

HCLS1 is involved in key signaling pathways such as the B-cell receptor (BCR) and T-cell receptor (TCR) signaling pathways. In these pathways it works alongside proteins like SLP-76 and Vav to propagate signals that lead to cellular activation and differentiation. HCLS1's ability to bind and interact with proteins in these pathways highlights its role in orchestrating cellular immune responses.

HCLS1 has been implicated in certain autoimmune conditions and cancers including chronic lymphocytic leukemia (CLL) and systemic lupus erythematosus (SLE). In these contexts aberrant expression or activity of HCLS1 can disrupt normal immune signaling leading to pathological conditions. Additionally its interaction with proteins such as Bcl-2 in CLL suggests a role in apoptosis regulation further linking HCLS1 to disease progression and treatment response.