Which of the following is not an example of positive feedback?

A peptide bond is formed between __________.

A peptide bond is formed between __________.

Which of the following statements is NOT true regarding the comparison of the alpha-helix structure to the beta-sheet structure in proteins?

Which of the following is not an example of positive feedback?

Which of the following statements is NOT true regarding the comparison of the alpha-helix structure to the beta-sheet structure in proteins?

Nuclear transport is a very important concept of study in modern cellular biology. Transport of proteins into the nucleus of an organism requires energy in the form of GTP, which is attached to a protein called Ras-related Nuclear protein (RAN).

RAN is a monomeric G protein found in both the cytosol as well as the nucleus and its phosphorylation state plays an important role in the movement of proteins into and out of the nucleus. Specifically, RAN-GTP and RAN-GDP binds to nuclear import and export receptors and carries them into or out of the nucleus. They also play a role in dropping off cargo that import and export receptors hold onto. RAN's functions are controlled by two other proteins: RAN guanine exchange factor (RAN-GEF) and RAN GTPase activating protein (GAP). RAN-GEF binds a GTP onto RAN, while RAN-GAP hydrolyzes GTP into GDP. As a result, there is a RAN-GTP and RAN-GDP concentration gradient that forms between the cytosol and nucleus.

One of the main roles of RAN is to bind to nuclear import and export receptors and carry them into or out of the nucleus. Given that import and export receptors are proteins, what can we say about the cooperativity displayed by RAN when it comes to binding to import and export proteins?

Nuclear transport is a very important concept of study in modern cellular biology. Transport of proteins into the nucleus of an organism requires energy in the form of GTP, which is attached to a protein called Ras-related Nuclear protein (RAN).

RAN is a monomeric G protein found in both the cytosol as well as the nucleus and its phosphorylation state plays an important role in the movement of proteins into and out of the nucleus. Specifically, RAN-GTP and RAN-GDP binds to nuclear import and export receptors and carries them into or out of the nucleus. They also play a role in dropping off cargo that import and export receptors hold onto. RAN's functions are controlled by two other proteins: RAN guanine exchange factor (RAN-GEF) and RAN GTPase activating protein (GAP). RAN-GEF binds a GTP onto RAN, while RAN-GAP hydrolyzes GTP into GDP. As a result, there is a RAN-GTP and RAN-GDP concentration gradient that forms between the cytosol and nucleus.

One of the main roles of RAN is to bind to nuclear import and export receptors and carry them into or out of the nucleus. Given that import and export receptors are proteins, what can we say about the cooperativity displayed by RAN when it comes to binding to import and export proteins?

Collagen, the most abundant protein in the body, is an example of what type of protein?

Collagen, the most abundant protein in the body, is an example of what type of protein?