Table of Contents
- 1 What are the three possible destinations for proteins leaving the Golgi apparatus?
- 2 What are 3 processes that occur in the Golgi apparatus?
- 3 How are proteins transported to their correct location?
- 4 What happens when Golgi apparatus is removed from the cell?
- 5 How are branched chain molecules synthesized in the Golgi apparatus?
- 6 How is the Golgi apparatus involved in the secretory pathway?
What are the three possible destinations for proteins leaving the Golgi apparatus?
There are three main destinations for biochemicals released from the trans Golgi network: (1) inside the cell to the lysosomes; (2) the plasma membrane and (3) outside of the cell. In each case the destination is clearly linked to function.
What are 3 processes that occur in the Golgi apparatus?
The Golgi apparatus is responsible for transporting, modifying, and packaging proteins and lipids into vesicles for delivery to targeted destinations.
What 3 things does the Golgi apparatus do with proteins?
The Golgi enzymes catalyze the addition or removal of sugars from cargo proteins (glycosylation), the addition of sulfate groups (sulfation), and the addition of phosphate groups (phosphorylation). Cargo proteins are modified by enzymes (called resident enzymes) located within each cisterna.
What is the pathway of a protein leaving a cell?
Most proteins leave the ER within minutes, transported in vesicles bound for the Golgi and then later for excretion, lysosomes or the cell membrane. That forward direction of travel is called anterograde; going backwards from Golgi to ER is retrograde transport.
How are proteins transported to their correct location?
How are proteins transported to their correct location in the cell? Proteins contain molecular “zip codes” that allow them to be shipped to the correct cellular compartment. Correct. For example, proteins destined for the nucleus contain a nuclear localization signal, and other proteins contain an ER signal sequence.
What happens when Golgi apparatus is removed from the cell?
Complete answer: If the Golgi apparatus is removed from the cell, all sorts of vesicle formation will stop. The Golgi apparatus is mainly responsible for transporting, modifying, and packaging of proteins and lipids into vesicles to be delivered to targeted destinations.
What is protein pathway?
A biological pathway is a series of interactions among molecules in a cell that leads to a certain product or a change in a cell. Such a pathway can trigger the assembly of new molecules, such as a fat or protein. Pathways can also turn genes on and off, or spur a cell to move.
How are proteins transported from the ER to the Golgi apparatus?
During their subsequent transport, from the ER to the Golgi apparatus and from the Golgi apparatus to the cell surface and elsewhere, these proteins pass through a series of compartments, where they are successively modified.
How are branched chain molecules synthesized in the Golgi apparatus?
It is synthesized at the cell surface by enzymesin the plasma membrane. The other cell wall polysaccharides (hemicelluloses and pectins), however, are complex, branched chain molecules that are synthesized in the Golgi apparatus and then transported in vesicles to the cell surface.
How is the Golgi apparatus involved in the secretory pathway?
The Golgi apparatus is thus involved in processing the broad range of cellular constituents that travel along the secretory pathway. Organization of the Golgi Morphologically the Golgi is composed of flattened membrane-enclosed sacs (cisternae) and associated vesicles (Figure 9.22).
How are soluble proteins secreted from the trans Golgi network?
The constitutive and regulated secretory pathways. The two pathways diverge in the trans Golgi network. The constitutive secretory pathway operates in all cells. Many soluble proteins are continually secreted from the cell by this pathway, which also (more…)