In multicellular organisms, growth factors, hormones, neurotransmitters ... producing multiple intracellular signals for every one receptor that is bound. Protein kinases such as PKA and PKC ...

G-protein coupled receptors regulate hormone secretions in the pancreas ... that have seven membrane-spanning domains connected by intracellular and extracellular domains (Figure 2), and these ...

The growth hormone-releasing peptide-6 (GHRP-6) has gained considerable interest in scientific research due to its distinct ...