Recombinant Human LRRK1 protein

Supplementary information

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

LRRK1 also known as leucine-rich repeat kinase 1 is an important protein with a molecular mass of approximately 273 kDa. This protein belongs to the family of serine/threonine kinases and functions mechanically by phosphorylating other proteins a process critical for regulating various cellular processes. It is highly expressed in bone tissues with lower levels found in the liver and brain. LRRK1 also contains a GTPase domain which contributes to its kinase activity and is sometimes studied alongside its close relative LRRK2 due to structural similarities.

Biological function summary

LRRK1 plays a significant role in bone homeostasis and remodeling contributing to skeletal development and maintenance. LRRK1 does not form part of a larger complex but influences pathways involved in cytoskeletal dynamics and cellular motility. This protein is essential for osteoclast function where its kinase activity aids in the breakdown of bone matrix. Understanding its role in bone turnover helps researchers investigate potential therapeutic targets for bone-related conditions.

Pathways

LRRK1 is involved in signaling pathways related to bone resorption and remodeling. It participates in the RANK/RANKL/OPG pathway essential for osteoclast differentiation and activation. Additionally it interacts with proteins such as c-Src and Cbl which are critical in bone matrix dissolution and cellular adhesion processes. These interactions highlight LRRK1’s pivotal role in maintaining skeletal integrity through regulated bone degradation.

Research indicates that LRRK1 can impact conditions such as osteoporosis and Paget's disease of bone. Osteoporosis involves decreased bone mass and increased fracture risk which relates to dysregulated osteoclast activity in which LRRK1 may play a part. In Paget's disease abnormal bone remodeling processes occur possibly involving dysfunctions in LRRK1 signaling. The interaction of LRRK1 with LRRK2 is also relevant in this context as both enzymes share mechanistic features that might influence bone-related pathologies.