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explain
Mechanism of Myostatin Function & The PI3-K–Akt1 pathway
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- It is not an easy matter to assign particular func-tions to specific components of the basal lamina, sincethe overall structure is a complicated composite materialwith both mechanical and signaling properties. Nidogen,for example, cross-links two central components of thebasal lamina by binding to the laminin γ-1 chain and totype IV collagen. Given such a key role, it was surprisingthat mice with a homozygous knockout of the gene fornidogen-1 were entirely healthy, with no abnormal phe-notype. Similarly, mice homozygous for a knockout of thegene for nidogen-2 also appeared completely normal. Bycontrast, mice that were homozygous for a defined muta-tion in the gene for laminin γ-1, which eliminated just thebinding site for nidogen, died at birth with severe defectsin lung and kidney formation. The mutant portion of thelaminin γ-1 chain is thought to have no other functionthan to bind nidogen, and does not affect laminin struc-ture or its ability to assemble into the basal lamina.…Trace the sequence of events in signal transduction for each of the following second messengers: cyclic AMP, inositol trisphosphate (IP3), diacylglycerol (DAG), and calcium ions.Given the effect of myosin heavy chain phosphorylation on myosin II assembly/disassembly, why might it make sense to find this kinase near the contractile ring as the process of cell division is concluding?
- Explain molecular mechanism of Pi3K signalling and also role of PI kinases and PI phosphatase.Describe the intracellular, biochemical downstream signal cascade that results from the binding of menthol to TRPM8- How does the ras path trigger the initiation of a new branch off an existing actin filament – explain the roles of the G protein cdc25, WASp, ARP2/3, formin and actin.
- Need help Intaractions of FAK kinase which directly depend on the tyrosine residue 397 (Y397) are inhibbited by a chemical compound in cancercells. Intaraction of FAK kinase with what proteins are blocked by this inhibition? (please give a listt of them all, and that's it)My question is how many myosin binding sites are uncovered or exposed per binding of calium ions to one troponin complex in particular TnC3 of 16 Which statement about the IP3 DAG pathway is false? O Diacylglycerol can act as a second messenger. Inositol trisphosphate can act as a second messenger. O Protein kinase C can phosphorylate a wide variety of proteins. O Inositol trisphosphate remains bound to the membrane after phospholipase C catalyzes its formation. Inositol trisphosphate can open ion channels in the membraņes of smooth endoplasmic reticulum, releasing calcium into the cytoplasm.
- 1117 increase in the number of passive glucose transporter on the muscle cell surface thus increases the uptake of glucose into the cell and decreases blood glucose level. Indicate whether the following conditions/practice will likely lead to diabetes (mark Yes or No). [Select] a mutation in a V-SNARE in islet cells that blocks all secretion Q Search ******* 40 ****** 99+ app.honorlock.com is CPls provide side by side difference of the steps in the synthesis of catecholamines and acetylcholine.From experiments in which cells expressing normal myosin II heavy chain were altered to either lack (mhckA-) or overexpress (MHCKA ++) a myosin heavy chain kinase (MHCKA). For answering this question recall the earlier the variants on the myosin II heavy chain, in which three key threonines, normally subject to reversible phosphorylation, were altered in various ways: 3X Ser = Serines in place of Threonines 3X Ala = Alanines in place of Threonines 3X Asp = Aspartate in place of Threonines MHCKA is present at normal levels. Which of the two mutants (mhcp- or MHCP++) would be most likely to have a defect in cytokinesis?