Anti-FXYD1/PLM antibody

Supplementary info

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

Activity summary

FXYD1 also known as phospholemman (PLM) is a small transmembrane protein with a molecular mass of approximately 15 kDa. It is expressed mainly in cardiac and skeletal muscles where it plays a mechanical role in regulating ion transport across cell membranes. This protein modulates the activity of the Na+/K+-ATPase pump influencing the transport of sodium and potassium ions which is important for maintaining cellular homeostasis.

Biological function summary

Phospholemman participates in the regulation of cardiac contractility and is involved in muscle relaxation processes. As a component of the Na+/K+-ATPase pump complex it affects the pump's affinity for sodium ions which is important for its normal function. The effector actions of FXYD1 are modulated by phosphorylation allowing it to serve as an important regulator of cardiac output under varying physiological conditions.

Pathways

Phospholemman features in the ion homeostasis and excitability pathway where its action on the Na+/K+-ATPase pump links it to regulation of cardiac action potential. This regulation involves interaction with other membrane proteins like ankyrin which further connects FXYD1 to integrative cardiovascular mechanisms. Additionally FXYD1 impacts membrane hyperpolarization positioning it in the pathway that controls cell excitability and signal transduction in muscle tissues.

Associated diseases and disorders

Dysregulation of FXYD1 is linked to heart failure and arrhythmias. Altered expression or function of this protein can affect Na+/K+-ATPase efficiency leading to imbalanced ion transport and compromised cardiac function. Interaction with proteins such as cAMP-dependent protein kinase also implicates FXYD1 in various cardiac pathologies influencing the therapeutic targeting of this protein in cardiovascular diseases.