Question

In: Biology

Describe the role of the troponin-tropomyosin complex and the role of calcium ions in skeletal and...

Describe the role of the troponin-tropomyosin complex and the role of calcium ions in skeletal and cardiac muscle contraction.

Solutions

Expert Solution

Tropo myosine are myosine protein which is present in the muscle structure. Tropnine is a connector protein which is helpful to make interaction between actin and myosin protein.

Without troponine actin protein is not able to interact with myosine.

Troponine protein have ATP binding site for energy requirement.

when the signal molecule comes from outside it is received by the receptor protein and then transferred into the cytoplasm.

In this signalling GPCR signalling is involved. When the signal molecule comes a point with gpcr receptor and then activate phospholipase C enzyme. this enzyme is involved in the formation of inositol triphosphate. on the membrane of Endoplasmic Reticulum, inositol triphosphate gated calcium channels are present. when ip3 binds with these channels it opens up and Calcium is released from endoplasmic reticulum to cytoplasm and then activate scam kinase enzyme. which activates multiple proteins and then leads to muscle contraction.


Related Solutions

The contractile protein of skeletal muscle involving ATP ase activity is (a) troponin (b) tropomyosin (c)...
The contractile protein of skeletal muscle involving ATP ase activity is (a) troponin (b) tropomyosin (c) myosin (d) a-actinin
* Describe the relationship between Ca++, troponin, tropomyosin, and the ability of myosin to bind actin....
* Describe the relationship between Ca++, troponin, tropomyosin, and the ability of myosin to bind actin. * Describe how myosin and actin interact for a muscle to contract.
What is the role of tropomyosin in muscle contraction
What is the role of tropomyosin in muscle contraction
Calcium plays a role during contraction of both skeletal and cardiac muscle, but there are important...
Calcium plays a role during contraction of both skeletal and cardiac muscle, but there are important differences in the mechanisms leading to increased calcium concentration and contraction between both muscle types. Could you explain them?
describe the cross bridge cycle. Make sure to include the action of actin, myosin, troponin, calcium,...
describe the cross bridge cycle. Make sure to include the action of actin, myosin, troponin, calcium, and ATP.
Explain how leak channels and gated channels differ. Discuss the role of calcium ions in the...
Explain how leak channels and gated channels differ. Discuss the role of calcium ions in the transmission of an action potential at the synapse. Define continuous propagation and saltatory propagation Identify and describe the three spinal meninges. Graded potentials produce an effect that increases with distance from the point of stimulation. produce an effect that spreads actively across the membrane surface without diminishing. always cause repolarization. may be either a hyperpolarization or a depolarization. are often all-or-none. please type it
Detail how calcium ions work to allow for muscle contraction. Be sure to describe the roles...
Detail how calcium ions work to allow for muscle contraction. Be sure to describe the roles of sarcoplasmic reticulum, tropomyosin, troponin, ATP, actin and myosin.
If calcium binding sites on troponin proteins were blocked by 25%, how would this impact the...
If calcium binding sites on troponin proteins were blocked by 25%, how would this impact the maximum contractile force of a muscle fibre in the context of the cross bridge cycle?
4. A 0.3634 g sample of ore containing calcium is dissolved and the calcium ions are...
4. A 0.3634 g sample of ore containing calcium is dissolved and the calcium ions are precipitated as CaC2O4. The CaC2O4 precipitate is filtered, washed and redissolved in acid. The pH of the resulting Ca2+ solution is adjusted. A 25.00 mL volume of 0.0376 M EDTA is added. The excess EDTA is back-titrated to the end point, requiring 23.08 mL of 0.0188 M Mg2+ solution. a) Write a balanced chemical equation for the EDTA reactions that occur as part of...
Describe the steps of excitation-contraction coupling and the role of calcium in this process.
Describe the steps of excitation-contraction coupling and the role of calcium in this process.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT