apelin receptor peptide ligand binding binding - Apelin receptoragonist Apelin receptor binds to apelin Unraveling the Apelin Receptor Peptide Ligand Binding: A Deep Dive

Apelingene The intricate world of molecular interactions is crucial for understanding biological processes, and the apelin receptor peptide ligand binding is a prime example of this complexity.Distribution of apelin, the endogenous ligand of the APJ ... This article delves into the fundamental aspects of how peptide ligands interact with the apelin receptor, exploring the structural nuances, functional consequences, and therapeutic implications.Structural and functional determination of peptide versus ... Drawing upon a wealth of research, we aim to provide a comprehensive overview grounded in scientific evidence, aligning with E-E-A-T principles and entity-based SEO.

At the heart of this interaction lies the apelin receptor (also known as APJ or APLNR), a G protein-coupled receptor (GPCR) that plays a pivotal role in various physiological functionspGlu(Lys8GluPAL)-apelin-13-amide. This receptor is activated by a family of endogenous peptide ligands, primarily apelin and Elabela (also referred to as Toddler). These peptides are derived from a common precursor and are widely expressed throughout the human body, highlighting their systemic importance. Research by Williams et al.The Structural Basis of Peptide Binding at Class A G ... (2024) has focused on the structural and functional determination of how these peptide ligands interact with the apelin receptor, providing critical insights into the ligand binding mechanismStructural and functional determination of peptide versus ....

The binding of apelin to its receptor elicits a cascade of downstream signaling events, leading to diverse physiological effects. For instance, apelin is recognized as one of the most potent stimulators of cardiac contractility and plays a significant role in regulating blood pressure and blood flow. Furthermore, it acts as a potent angiogenic factor, essential for normal vascular development. Chapman et alThis minireview outlines key (patho)physiological actions of the AR, addresses what is known about signal transduction downstream of AR activation, .... (2014) extensively reviewed the physiology, pathology, and cell signaling associated with the apelin receptor, underscoring its broad physiological impact.

Understanding the precise nature of receptor binding affinity is paramount for developing effective therapeutic strategies. Studies have investigated the structural basis of this interaction, revealing that the peptide agonist can adopt specific conformations within the ligand binding pocket. For example, Ma et al.This minireview outlines key (patho)physiological actions of the AR, addresses what is known about signal transduction downstream of AR activation, ... (2017) elucidated the structural basis for apelin control of the human apelin receptor, demonstrating a curved two-site ligand binding mode adopted by the peptide agonist.作者：A Murza·2015·被引用次数：64—To better understand the role of its C-terminal Phe(13) residue onligand binding,receptorsignaling, and hypotension, we report a series of modified analogues ... This detailed structural information is invaluable for designing novel apelin receptor agonists and antagonists with improved specificity and efficacy.

The apelin family of peptides exhibits variations in their length and structure, with Apelin-13 being a particularly well-studied and potent member作者：Y Jiang·2021·被引用次数：35—Apelin and Elabela are endogenous peptide ligandsfor Apelin receptor (APJ), a widely expressed G protein-coupled receptor. They constitute a spatiotemporal .... Fan et al.The Structural Basis of Peptide Binding at Class A G ... (2003) observed a crucial correlation between receptor binding affinity and cell-cell fusion inhibitory activity for Apelin-13作者：P Janssens·2022·被引用次数：10—It is part of the apelinergic system (AS) that consists of two highly conservedpeptide ligands,apelinand apela, and a G-protein-coupled .... Further research by Murza et alHuman APJ GPCR membrane preparation for Radioligand .... (2015) and Read et al.Distribution of apelin, the endogenous ligand of the APJ ... (2020) delved into the impact of C-terminal modifications of apelin-13 on ligand binding, receptor signaling, and physiological outcomes like hypotension.BS16 A novel fluorescent apelin ligand tracks ... These studies emphasize that even subtle alterations in peptide structure can significantly influence binding and subsequent biological responses.

Beyond apelin, Elabela has emerged as another critical endogenous ligand for the apelin receptor. The co-existence of apelin and Elabela as endogenous peptide ligands for the apelin receptor highlights the nuanced regulation of this signaling pathway.作者：T 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 ... Kuba et al. (2019) provided insights into Apelin and Elabela as dual ligands for APJ, emphasizing their widespread expression and importance. Williams et alTheLigandEfficiency chart plotsBindingEfficiency Index (BEI) against Surface Efficiency Index (SEI), where: SEI = (-log10(Standard Value*10^-9))*100/PSA .... (2024) have also contributed to understanding the structural and functional differences between peptide and small molecule ligands interacting with the apelin receptor.作者：E O’Flaherty·2019·被引用次数：2—In this study, we investigated the use of a novel fluorescentligand,apelin-488, to successfully show qualitative and quantitativeapelin receptor...

The therapeutic potential of targeting the apelin receptor system is substantial. Wagenaar et al. (2025) highlighted the potential of APJ agonists in treating a range of conditions, including cardiovascular, renal, pulmonary, and metabolic diseases, as well as viral infections. The development of apelin receptor agonists is an active area of research, aiming to harness the beneficial effects of the apelinergic system for therapeutic benefit.

In summary, the apelin receptor peptide ligand binding is a complex yet vital process governed by the precise molecular interactions between endogenous peptides like apelin and Elabela and their cognate receptor.Structural and functional determination of peptide versus ... Ongoing research, employing advanced structural biology techniques and functional assays, continues to unravel the intricacies of this ligand binding phenomenon. This deep understanding is crucial for advancing our knowledge of physiological regulation and for the development of novel therapeutic interventions targeting the apelinergic system.作者：GTM Wagenaar·2025·被引用次数：5—APJ agonists have therapeutic potential in multiple diseases including cardiovascular, renal, pulmonary and metabolic diseases, and viral infections. The identification of apelin as the endogenous ligand for the APJ receptor by De Falco et al.The apelin receptor: physiology, pathology, cell signalling ... (2004) marked a significant milestone, paving the way for the extensive research that followed.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 ... The exploration of apelin receptor variants and their differing peptide ligand binding characteristics (as noted in various studies) further underscores the complexity and fine-tuning of this signaling pathway.