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The Golgi body
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∙ 13y ago
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The ER sends proteins and lipids it makes to what to be modified?
The endoplasmic reticulum (ER) sends proteins and lipids in membranous vesicles to the Golgi body (also known as the Golgi apparatus or the Golgi complex). The Golgi body looks like a stack of pita breads; it resembles the ER. There, the membranous vesicles containing proteins or lipids will fuse with one side of the Golgi body known as the cis face.Inside the Golgi body, proteins and lipids will have carbohydrate molecules added to them, forming glycoproteins (proteins with carbohydrates attached) and glycolipids (lipids with carbohydrates attached). After being modified, the glycoproteins and glycolipids will exit the Golgi body in membranous vesicles through the trans face (the side opposite the cisface).
What would be the effect of collecting larger fraction when carrying out a column?
Their would be an increased possibility of getting multiple compounds rather than the one compound you are looking for. Possibly cis or trans differentiation. Using smaller fractions increases the possibility of getting just on, expected compound.
How many isomers does pentanol have?
12 isomers can be formed. 1-pentene cis-2-pentene and trans-2-pentene 2-methyl-1-butene 3-methyl-1-butene 2-methyl-2-butene 1,1-dimethylcyclopropane (1R, 2R)-1,2-dimethylcyclopropane (1S, 2S)-1,2-dimethylcyclopropane methylcyclobutane cyclopentane and ethylcyclopropane
What is the function of transport vesicle?
The transport vesicle transports proteins from the smooth endoplasmic reticulum to the cis side of the Golgi aparatus. The vesicles move from the Smooth ER to the receiving (cis) side of the Golgi aparatus, and then leave though the trans (shipping) face of the Golgi aparatus .
What is difference between cis trans Golgi complex?
Cis and trans refers to the different faces of a Golgi complex. Vesicles come into the cis face from the ER and leave from the trans face to the plasma membrane or Lysosomes.
What is the narrow flat membranous structure ofa Golgi body is termed as?
The "stacks of pancakes" are vesicles with a trans and cis face.
Can bud off vesicles which form the golgi apparatus?
vesicleSecretory vesicles bud off from golgi. They are small packages of proteins
What is the transition vesicle?
Transitional vesicles are vesicles within a cell that transport proteins, lipids and other materials form organelle to organelle. Their function is to transport materials (such as proteins and lipids) from the transitional ER (also called the transitional elements of the ER) to the ERGIC (ER-Golgi intermediate compartment) or the CGN (cis-Golgi network).
What is cis face and trans face?
Cis face is where a vesicle forms ER and attaches Transface: where packaged proteins are released from
Do proteins from the RER have to cross the Cytosol to join the Cis Golgi?
Yes, in vesicles, though there may be confusion between cis and trans here. The confusion may be mine though.
What are the steps of the secretory pathway?
Protein SynthesisEndoplasmic Reticulum-->cis Golgi cisternae --> medial Golgi cisternae --> trans Golgi Cisternae --> Plasma membraneExtra Cellular SpaceAs they are being synthesized, secretory proteins enter the lumen of the endoplasmic reticulum. From the ER, vesicles transport these proteins to the Golgi, where they are sequentially modified and concentrated in a cis-to-trans direction. Secretory vesicles bud from the Golgi and move along cytoskeletal filaments to eventually fuse with the plasma membrane, secreting their protein cargo. Each of these transport steps requires specialized proteins to ensure that the cargo is sent to the proper location and is able to fuse with the target membrane.
What is the exact transport mechanism by which proteins travel through the Golgi apparatus?
The Golgi apparatus is important in modifying, sorting and packaging macromolecules for secretion. Some people say it is similar to a post office where it packages and labels items and then sends it to different parts of the cell.The vesicles that leave the RER are sent to the cis face of the Golgi where they fuse and empty their contents into the lumen. Once there they are modified and sorted. Then send on their way.The transport mechanism which proteins move through the Golgi is not clear.
What is the Golgi apparatus of structure?
The Golgi apparatus has a structure that is made up of cisternae, which are flattened stacks of membrane usually found in a series of five to eight, or until they fill up the cytoplasm. These cisternae help proteins and cytoplasmic components biochemically react and travel between different parts of the Cell.How the proteins and vesicles pass through the Golgi apparatus structure is clearly represented and understood.According to the vesicular transport model, there are a variety of compartments located between the cis, essentially the beginning of the Golgi apparatus, and the trans, the end. These compartments shuttle along the macromolecules from section to section using membrane-bound carriers. The cisternal maturation model states that the vesicles fuse to each other at the cis face of the Golgi apparatus and are essentially pushed along as new vesicles fuse together behind them.
How is the Proteins that are secreted from a eukaryotic cell must first travel through the endomembrane system set up?
As they are being synthesized, secretory proteins enter the lumen of the endoplasmic reticulum. From the ER, vesicles transport these proteins to the Golgi, where they are sequentially modified and concentrated in a cis-to-trans direction. Secretory vesicles bud from the Golgi and move along cytoskeletal filaments to eventually fuse with the plasma membrane, secreting their protein cargo. Each of these transport steps requires specialized proteins to ensure that the cargo is sent to the proper location and is able to fuse with the target membrane.
Where does cisternal maturation occur?
Cisternal maturation occurs in the Golgi apparatus. This is where the cisternae move, beginning at the cis face and progressing via the medial face to the trans face.
