The answer to this question is the change in neurotransmitter serotonin. A low level of serotonin can lead to a low mood, depression, and even anxiety. Serotonin is a chemical found in our body that gives / transmits impulses that is regulated to makes a person happy and maintains a mood balance.
1.sun
2.the earth's interior
A common misconception is that interphase<span> is the first stage of mitosis. However, since mitosis is the division of the nucleus, prophase is actually the first stage. In </span>interphase<span>, the cell gets itself ready for mitosis or meiosis.</span>
Animals have four basic types of tissue: nervous, epithelial, muscle, and connective.
Answer:
the pathway will be under-expressed.
- the alpha subunit helps to bind with either GDP or GTP. when the α subunit is bound with GDP, it will be bound to β and γ subunits and thus forms an inactive state for G-protein.
- when the alpha subunit binds with the GTP, it becomes activated and dissociates β and γ subunits.
if G-protein Coupled Receptor is unable from dissociating β and γ subunits, then the pathway will go under expression.
The chemical qualities of the alpha subunit allow it to bind easily to one of two guanine subunits, GDP or GTP. The protein thus has two functional formations. When GDP is bound to the alpha subunit, the alpha subunit remains bound to the beta-gamma subunit to form an inactive trimeric protein.
G-proteins, cAMP, and Ion Channel Opening. The alpha subunit activates adenylate cyclase, in purple, and loses GTP. Adenylate cyclase converts ATP to cyclic AMP, which then activates Protein Kinase, shown in blue. Protein Kinase phosphorylates an ion channel, letting sodium ions rush into the cell.
As a result of the ligand binding to its site on the G-protein-linked receptor, A) the G-protein changes conformation and GTP replaces the GDP on the alpha subunit. ... Inactivation of the alpha subunit occurs when its own phosphorylase activity removes a phosphate from the GTP.
