Another ATP-binding site on myosin is where enzymatic activity converts ATP to ADP, releasing energy and an inorganic phosphate molecule. When ATP binding causes myosin to release actin.
<h3>What is the function myosin?</h3>
The first molecular motor, myosin, is a protein that transforms chemical energy in the form of ATP into mechanical energy to produce force and movement.
<h3>What components make up myosin?</h3>
A head, neck, and tail domain make up the majority of myosin molecules. With the exception of myosin VI, which moves toward the pointed (-) end of the filament, the head domain attaches the filamentous actin and produces force by ATP hydrolysis as it "walks" along the filament towards the barbed (+) end.
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Answer:
D
Explanation:
it is felling down I guess
<h2>GPCRs and RTKs</h2>
Explanation:
1) Phosphorylation of receptor can terminate signal or desensitize receptor: GPCRs because when signal persists a protein kinase receptor is activated,this further catalyse the phosphorylation of several serine residue at cytosolic phase of 7 transmembrane
Phosphorylated transmembrane recognized by arrestin protein blocks interaction between trimeric G protein and receptor thus blocks signal transduction
2) Autophosphorylation of receptor can initiate signal: RTKs because receptor dimerization activates intrinsic tyrosine kinase activity by which they phosphorylate its own tyrosine residue on cytosolic phase
3) Structure contains seven transmembrane helices: GPCRs because it consists of single polypeptide and spans the membrane 7 times hence called 7 transmembrane;it recognizes external signal and activates trimeric G protein
4) Ligand binding induces conformational change in receptor: RTKs because normally RTK exist in monomeric form in absence of any ligand molecule but when any ligand molecule binds receptor starts to dimerize
5) Receptor activation causes phosphorylation of its cytosolic subunits: RTKs because when receptor gets activates the intrinsic tyrosine kinase activity by which they phosphorylate its cytosolic subunits
6) An example is the insulin receptor: Insulin receptor is present on plasma membrane and belongs to RTK family and always exist in dimeric form
7) Transports some ligands through the membrane: Neither GPCR nor RTK;ligand gets transported through the membrane through ligand gated channel
8) An example is the epinephrine receptor: Epinephrine is an endocrine hormone produced by adrenal glands in stress condition and prepare body for fight and flight;Epinephrine uses GPCR signalling pathway by four different types of membrane receptors in different tissues
9) Activate heterotrimeric G proteins directly: Transmembrane protein of GPCR recognizes the external signal and activates G protein,activated G protein binds with effector enzyme and activate it which further produce or destroy secondary messenger that carry message from cell surface to cell interior
Answer:
Lymph nodes absorb excess fluid from blood
Explanation:
Lymph nodes are part of lymphatic system. Lymph nodes perform two main function; one is to enhance the immunity by producing immune cells, and other is to absorb excess fluid that is continuously leaking from blood vessels. this fluid includes water, protein and other substances too. Lymph nodes are rich source of immune cells too.
Answer:
D.
Explanation:
It will stay the same no matter how the atoms are rearranged
