The structure that is named golgi complex was first described by biologist Camilo Golgi, hence the name. Golgi is a complex structure because it is composed of a network of interconnected vesicles and sacs that organize themselves to perform a function associated with the endoplasmic reticulum.
This Golgi complex network has location and size. varied, however, their position is usually associated with the proximities. nucleus and endoplasmic reticulum. Already with regards to size, though. variable, the organelle is well developed in secretory cells.
The Golgi complex is composed of an organelle of eukaryotic cells, made up of flat, stacked membranous discs.
See too: Bones of the human body.
Index
The main functions of the Golgi complex, or apparatus of. Golgi are:
In addition, the Golgi complex is primarily responsible. by producing lysosomes and sperm acrosomes, which help to. pierce the egg membrane.
Another important function of the Golgi apparatus is associated with. proteins. The complex's cisterns have two faces: cis and trans.
On the cis face of the cistern the vesicles received from the RER contain. proteins (produced by the ribosomes associated with the reticulum) that will be. modified and folded. Some of these proteins are glycosylated, that is, they undergo a sugar addition reaction in the RER. This process is completed no. Golgi, otherwise, these proteins can become inefficient.
On the trans face, proteins are stored in vesicles. membranous. Thereby, the Golgi complex gives rise to many enzymes as well. the primary lysosomes and the peroxisomes. While these organelles stay on. the cell's cytoplasm, proteins are often sent out of the cell. cell.
It is notable that the golgiense apparatus has a relationship. quite intimate with the endoplasmic reticulum. Regarding its functions this. is no different. The organelles work together, the complex of. Golgi is analogous to a cell processing and distribution center.
Proteins are produced on the ribosomes associated with. reticulum membrane and then transferred to the endoplasmic reticulum. rough. There, modifications and transport of these proteins occur and, after that, they can be transported to the Golgi complex. In this organelle these. newly arrived molecules can be processed and distributed throughout the cell.
So, this processing is based on the possibility of. modifications occur in the proteins so that yours can then occur. transport. In addition to the modification and distribution of molecules, the complex of. Golgi can also perform other functions.
One of them refers to the storage of proteins. In many. cases, proteins are produced, but there is no need to use them either. secreting them right away. That's where the function that the Golgiian apparatus comes into play. plays in the cell, this is when these proteins are produced to. further use, they are stored in the Golgi complex.
Another activity in which the Golgi apparatus plays a role. important is in the production of other cell structures, such as the acrosome. sperm and the middle lamella of plant cells, among others. This happens. because the vesicles that contain specific enzymatic material detach from. original organelle and transform into distinct organelles.
We can cite as an example, what happens in vesicles with. digestive enzymes that turn lysosomes. This process happens on. detachment of an original organelle.
In short, the Golgi complex is a structured chain of. stacked membranous sacs, called cisterns, and their vesicles. associated with enzymes and “raw material” for the product. Final. Thinking about it, it's easy to conclude that this device has the main one. function of:
The Golgi Complex is made up of structures called dictyosomes. Each of these structures is made up of membrane folds that form. small, flat, stacked bags called cisterns.
These cisterns are connected to the REL (Smooth Reticulum), and is de. there they receive membranes for the formation of secretion vesicles that. contains the stored substances.
Through the Golgi Complex, enzymes used in digestion, hormones and mucus are secreted and act on different parts of the body.
The origin of the organelle is directly related to the membrane or. by detached elements of the endoplasmic reticulum which, in turn, become. originated through the membrane.
The membranous and flattened sacs, formed by membranes that. they fold together and associate with vesicles that are generally related. to the transport of molecules.
The angulation of the membranes arrangement forms a face. concave and one convex, so they exhibit a certain curvature. Each of these faces is given a name. Specific: the convex is known as the cis face and the concave as the trans face. In this sense, there is a network of tubular structures that are associated with these. faces, they are the cis network and the trans network of the Golgi apparatus.
Each cell type and function has a varying size. With. Regarding the contents of the cisterns, it is also about something quite. variable each for a type and function of the cell in question. What is possible. claim is that this content has a variety of enzymes and molecules. related to the final product, a clear example of this is the fact of the content. these cisterns basically consist of glycoproteins and enzymes. related to their reactions.
The Golgi complex is situated close to the core of each. cell and is formed by units. These units called dictiosomes, too. are linked together. Each dictiosome is made up of a set of bags or. flat and discoid cisterns, surrounded by several secretory vesicles. sizes.
It is important to note that each dictiosome groups, on average, six cisterns, however, in some cases, this number can reach five. times more. The number of dictyosomes can vary, following the premise of a few. units up to a few hundred, this will occur according to the function performed. by eukaryotic cells.
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