apelin receptor peptide ligand binding peptide ligand - Apelingene binding Unraveling the Intricacies of Apelin Receptor Peptide Ligand Binding

Apelin peptide The apelin receptor (AR), also known as APJ or AGTRL1/APLNR, is a fascinating G protein-coupled receptor (GPCR) that plays a crucial role in numerous physiological processes. Its primary function involves binding to a family of peptide ligands known as apelin. Understanding the nuances of apelin receptor peptide ligand binding is critical for unlocking therapeutic potential in a wide range of conditions. Recent research, including structural and functional studies, is shedding light on the complex interactions that govern this process, offering valuable insights into receptor binding affinity and signaling.

At the heart of this system are the apelin peptides themselvesStructural and functional determination of peptide versus .... Apelin is the most well-characterized endogenous ligand for the apelin receptor. However, it's not the only one. Research has identified Elabela (also known as Toddler) as another endogenous peptide ligand for the apelin receptor. This discovery significantly broadened our understanding, indicating that the apelin receptor binds two distinct endogenous peptides, apelin and ELA. These peptide ligands are derived from a common precursor and are widely expressed throughout the human body, highlighting their systemic importance.

The interaction between these peptide ligands and the apelin receptor is a highly specific process.作者：TL Williams·2024·被引用次数：7—We describe a structural and functional study of the G protein-coupledapelin receptor, which binds two endogenouspeptide ligands,apelinand Elabela/Toddler ... Studies have delved into the structural basis of this interaction, revealing how peptide agonists adopt specific conformations to achieve effective ligand bindingAbstract We describe a structural and functional study of theapelin receptor, a G protein-coupledreceptor(GPCR) that binds two endogenouspeptide ligands.... For instance, some peptide agonists have been shown to adopt a constrained, curved, two-site ligand binding mode.Structural Basis for Apelin Control of the Human ... This intricate molecular dance is essential for activating the receptor and initiating downstream signaling cascades.Structure–function relationship and physiological role of ... The receptor binding affinity is a key parameter in determining the potency and efficacy of these interactions.

The physiological roles mediated by the apelin-apelin receptor axis are diverse and significant. Apelin has been identified as one of the most potent stimulators of cardiac contractility, influencing blood pressure and blood flow作者：TL Williams·2024·被引用次数：7—We describe a structural and functional study of the G protein-coupledapelin receptor, which binds two endogenouspeptide ligands,apelinand Elabela/Toddler .... Furthermore, it acts as a potent angiogenic factor, essential for normal vascular development作者：O Vu·2021·被引用次数：19—To date, evidence shows that the relatedligands bindingto the samereceptoror the sameligand bindingto two differentreceptorscan adopt different bound .... Beyond these, APJ agonists demonstrate therapeutic potential in treating cardiovascular, renal, pulmonary, and metabolic diseases, and even viral infections. The apelinergic system (AS), comprising these peptide ligands and the G-protein-coupled receptor, is therefore a vital component of human physiology.Apelin receptor binds to apelin

Investigating apelin receptor peptide ligand binding involves various experimental approaches. Techniques such as radioligand binding assays are employed to quantify the interaction, while structural studies, including X-ray crystallography and cryo-EM, provide atomic-level details of the ligand-receptor complex. These methods allow researchers to elucidate structure-function relationships and understand how modifications to the peptide sequence can alter receptor signaling and binding.作者：K Kuba·2019·被引用次数：102—Apelin is an endogenous peptide ligandfor the G protein-coupled receptor APJ/AGTRL1/APLNR and is widely expressed throughout human body. For example, modifications to the C-terminus of apelin-13 have been shown to significantly change ligand binding, receptor signaling, and physiological effects like hypotension.

The field is continuously expanding its pharmacological toolbox for the apelin receptor. This includes the development of novel agonists, antagonists, and probes作者：TL Williams·2024·被引用次数：7—We describe a structural and functional study of the G protein-coupledapelin receptor, which binds two endogenouspeptide ligands,apelinand Elabela/Toddler .... For example, the creation of fluorescent apelin ligands, such as apelin-488, has enabled qualitative and quantitative tracking of apelin receptor activity in vitro. Understanding how different ligands binding to the same receptor, or the same ligand binding to different receptors, can adopt distinct bound conformations is crucial for designing selective and effective therapeutics.

In summary, the apelin receptor is a key player in regulating a multitude of physiological processes, primarily through its interaction with apelin and Elabela peptide ligandsC-Terminal modifications of apelin-13 significantly change .... The intricate mechanisms of apelin receptor peptide ligand binding, including receptor binding affinity and the structural basis of these interactions, are areas of intense research. Continued exploration of this system promises to yield significant advancements in treating various diseases, underscoring the importance of understanding this vital peptide-receptor relationshipBS16 A novel fluorescent apelin ligand tracks .... The apelin receptor binds to apelin, initiating a cascade of events with far-reaching physiological consequencesAbstract We describe a structural and functional study of theapelin receptor, a G protein-coupledreceptor(GPCR) that binds two endogenouspeptide ligands....