Microtubules are regulated by a variety of proteins in neurons, including molecular motor proteins. Molecular motors transport organelles along the microtubule, but can also transport the microtubules themselves and organize them into regionally distinct patterns.n neurons, microtubules are also nucleated at the centrosome (located in the cell body of the neuron), but the microtubules are then severed from the centrosome so that they can be deployed into axons and dendrites.
Self employment taxes are comprised of two parts: Social Security and Medicare. You will pay 6.2 percent and your employer will pay Social Security taxes of 6.2 percent on the first $127,200 of your covered wages. You each also pay Medicare taxes of 1.45 percent on all your wages - no limit.
If $1 million dollars is the gross amount, then it would be reduced by any adjustments, itemization (or standard deduction), or personal/dependent exemptions. If the taxable income is over $372,950, then the tax rate still would be 35 percent.or a Single person, the total tax on a taxable income of $1 million dollars would then be $327,683.50. For Married Filing Jointly, the total tax would be $330,362.