An early GPCR positive allosteric modulator (PAM) was the 2-amino-3-benzoylthiophene derivative PD81,723, which enhances G i -coupled A 1 adenosine receptor (AR) agonist effects. Cryo-EM studies located its extrahelical binding site on TMs 5 and 6, and extensive empirical SAR is consistent with the experimental A 1 AR structure. At the anti-inflammatory A 3 AR, a series of 1 H -imidazo[4,5- c ]quinolin-4-amine PAMs, originally...

Muscle synergies are defined as coordinated recruitment of groups of muscles with specific activation balances and time profiles aimed at generating task-specific motor commands. While muscle synergies in postural control have been investigated primarily in reactive balance conditions, the neuromechanical contribution of muscle synergies during voluntary control of upright standing is still unclear. In this study, muscle syner...