CAMP activates cAMP-dependent protein kinase by

Biology

1 answer:

Leya [2.2K]3 years ago

4 0

Answer:

binding regulatory subunits and inducing their release from the catalytic subunits

Explanation:

cAMP molecules diffuse into the cytoplasm where they bind to an allosteric site on a regulatory subunit of a cAMP-dependent protein kinase ( protein kinase A, PKA).

-In its inactive form, PKA is a heterotetramer comprised of two subunits namely, regulatory (R) and two catalytic (C) subunits.

-The regulatory subunits normally inhibit the catalytic activity of the enzyme. cAMP binding causes the dissociation of the regulatory subunits, thereby releasing the active catalytic subunits of PKA.

-cAMP stimulates glucose mobilization by activating a protein kinase that adds a phosphate group onto a specific serine residue of the glycogen phosphorylase polypeptide.

You might be interested in

Let's pretend that a lioness is feeling tired and only wants to catch small rodents for a day. Each rodent has an energy cost of

diamong [38]

Uh oh I think it's. A carrot

5 0

3 years ago

The endoplasmic reticulum and Golgi apparatus are both membrane-bound organelles found in eukaryotic cells. Which statement desc

snow_lady [41]

The ER assembles proteins, and the golgi body modifies and packages them.

ER Golgi apparatus, because it packages proteins received from the ER cytoplasm 

The Golgi body are the ones that slightly alter, organize and prepare so-called parcels to be delivered for all the organelles in the cell. They receive these packages mainly in the rough endoplasmic reticulum. These packages that set out by Golgi body are macromolecules that used and synthesized by cells in many operations. If ER is absent then it would only mean that Golgi body would have no use other than simply lysosomes but these macromolecules plays a dynamic role in many organelles –nutrients, ATP and cell metabolism. It'll have a ripple effect if ER is absent in the cell.

4 0

3 years ago

How is the amount of urine produced regulated

adelina 88 [10]

Answer:

The amount of urine produced depends on the amount of excess water and dissolved wastes that are present in the body. Other factors such as habitat and hormone such as Anti-diuretic hormone (ADH) also regulates the amount of urine produced. When excess water is more in the body, diluted urine is excreted whereas when the excess water is less, the urine is concentrated.

4 0

2 years ago

Why would you learn less about an organism if it is were isolated from its surroundings than if you were able to observe the sam

Dahasolnce [82]

Answer:

this one`s been up for debate for awhile now.

1. it depends on the organism

learning about an organism could be considered 'easier' to study in different ways. for example, if you are studying marine life, you will most likely have to keep it in a water habitat to watch it alive. If you are studying a land species, then watching from it`s natural habitat will give you more accurate results. sometimes the environment can affect an organisms internal systems more than you may think. this leads into my second point.

2. it depends on what you are trying to study

if you are trying to learn about the mating process, seasonal activity, migration, or external behavior, then monitoring it from it`s natural habitat or an area that is a close copy is your best option. but if you are looking into studying internal organs/systems or cells, then in most cases, the organism will need to be taken out of its natural habitat. only in very careful situations is it left in a habitat during examination.

5 0

2 years ago

Which of the following is NOT true? Question 10 options: DNA is found in the nucleus. DNA replication produces four new strands

babunello [35]

DNA and RNA each contain four nitrogenous bases. They have 5 not 4.

6 0

3 years ago