|
Apelin Receptor
The Apelin Receptor (APLNR, also known as APJ) is a G protein-coupled receptor. APLNR possesses two endogenous ligands which are APELIN and ELABELA ELABELA (ELA, Apela, Toddler) is a hormonal peptide that in humans is encoded by the ''APELA'' gene. Elabela is one of two endogenous ligands for the G-protein-coupled APLNR receptor. Ela is secreted by certain cell types including human embryo .... The structure of APLNR was resolved in 2017 References Further reading * * * * * * * * * * * * * * * * * * External links * * * {{gene-11-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
G Protein-coupled Receptor
G protein-coupled receptors (GPCRs), also known as seven-(pass)-transmembrane domain receptors, 7TM receptors, heptahelical receptors, serpentine receptors, and G protein-linked receptors (GPLR), form a large group of evolutionarily-related proteins that are cell surface receptors that detect molecules outside the cell and activate cellular responses. Coupling with G proteins, they are called seven-transmembrane receptors because they pass through the cell membrane seven times. Text was copied from this source, which is available under Attribution 2.5 Generic (CC BY 2.5) license. Ligands can bind either to extracellular N-terminus and loops (e.g. glutamate receptors) or to the binding site within transmembrane helices (Rhodopsin-like family). They are all activated by agonists although a spontaneous auto-activation of an empty receptor can also be observed. G protein-coupled receptors are found only in eukaryotes, including yeast, choanoflagellates, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apelin
Apelin (also known as APLN) is a peptide that in humans is encoded by the ''APLN'' gene. Apelin is one of two endogenous ligands for the G-protein-coupled APJ receptor that is expressed at the surface of some cell types. It is widely expressed in various organs such as the heart, lung, kidney, liver, adipose tissue, gastrointestinal tract, brain, adrenal glands, endothelium, and human plasma. Discovery Apelin is a peptide hormone that was identified in 1998 by Masahiko Fujino and his colleagues at Gunma University and Takeda Pharmaceutical Company. In 2013, a second peptide hormone named Elabela was found by Bruno Reversade to also act as an endogenous ligand to the APLNR. Biosynthesis The apelin gene encodes a pre-proprotein of 77 amino acids, with a signal peptide in the N-terminal region. After translocation into the endoplasmic reticulum and cleavage of the signal peptide, the proprotein of 55 amino acids may generate several active fragments: a 36 amino acid peptide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
