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The main importance of membrane proteins is its specific functions. The amount of proteins in membranes varies from 25 to 75% of the membrane constitution. The amount and types of membrane proteins are highly variable.
To give a few examples:
In plasma membrane , there are transmembrane proteins associated with lipids, either "single" or "multipass" proteins. Examples of this kind of proteins are the porins (present in different types of bacteria) and membrane receptors that react with antigens triggering signal transduction cascades to the cell interior in order to generate a cellular response (e.g., insulin growth factor recepetor or IGFR, fibroblast growth factor receptor or FGFR, nerve growth factor receptor or NGFR, plateled-derived growth factor receptor or PDGFR, etc.).
On the other hand, we have the spectrin, a cytoskeletal protein noncovalently associated with the cytoplasmic side of the erythrocyte cell membrane. Also, we have the glycophorin A in erythrocyte plasma membrane, however with an uncertain function.
In mitochondria, the are several kind of membrane-associated proteins, such as cytochromes, crucial for electron transport during "cell respiration".
In bacteria, we found the bacteriorhodopsin, with light-absorbing activity.
Wiki User
∙ 7y ago
Wiki User
∙ 9y agoProteins that carry out receptor function (insulin receptor), ion channels such as sodium potassium channel, ABC transporters, ATP synthase are all membrane proteins. They are an integral part of membranes so they do posses strong hydrophobic nature. They do not let the diffusion any unspecific molecule inside the cell, since they are specific.
Wiki User
∙ 12y agoPeritoneal membranes - mesentery, mesocolon, greater and lesser omentum.
Wiki User
∙ 11y agovacoule membrane
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What is the simple squamous epithelium that lines the peritoneal cavity called?
The peritoneal membrane lines the peritoneal cavity.
Do females have a peritoneal cavity?
All humans have a peritoneal cavity.
What is another name for the peritoneal cavity?
I don't think there is another name for the peritoneal cavity. the peritoneal cavity is specifically for the potential space between the parietal and visceral portions of the peritoneum. hope this helps ^_^
What is the meaning of peritoneal?
The meaning of peritoneal actually describes the transparent membrane that is found in the abdomen and that lines the cavity of the abdomen.
What tissue type forms the wall of the peritoneal cavity?
Serous membrane (mesothelium) forms the wall of the peritoneal cavity.
What is the term for organs that lie within the abdominal cavity but not within the peritoneal cavity?
An organ can be in the abdominopelvic cavity but not the peritoneal cavity if the organ sits below the diaphragm but outside the peritoneal membranes. The kidneys, which are behind the peritoneal membrane (retroperitoneal) are such organs.
What are the names for membranes with hair-like structures on them?
cilia
What are two types of dialysis?
There are two methods of dialysis in use: hemodialysis (blood dialysis) and peritoneal dialysis (dialysis in the abdominal cavity). In hemodialysis, the dialysis membrane is made up of cellophane or other synthetic material that assists in the removal of impurities from the blood by their passage through these semipermeable membranes in a fluid bath. In peritoneal dialysis, the surface area of the peritoneum acts as the membrane. Dialysis fluid is introduced into the peritoneal cavity and then periodically removed along with the waste products. This procedure may be done at intervals throughout the day or during the night.
What is the difference between pericardial pleural and peritoneal varieties?
pleural membranes are separated from parietal by a thin film of watery fluid and usually cover an internal organ like lungs. pericardial membranes surround the heart peritioneal membranes line the abdominopelvic cavity So basically, the only difference is what each variety membrane surrounds or covers.
What is the simple squamous epithelium that lines the peritoneal cavity called?
The peritoneal membrane lines the peritoneal cavity.
Do females have a peritoneal cavity?
All humans have a peritoneal cavity.
What serous membrane surrounds the stomach?
The visceral segment of the serous membranes encases the internal organs while the parietal segment is responsible for lining the body wall. Serous membranes which care for the needs of the lungs are known as pleurae while the serous membranes which care for the abdominal cavity are known as peritoneum, but are also referred to as peritoneal membranes.
Should it be diffuse peritoneal and omental studding or diffused peritoneal and omental studding?
diffuse
Why are you nauseous with peritoneal dialysis?
"Handbook of Peritoneal Dialysis".....available on Amazon.com is a good reference
When comparing hemodialysis and peritoneal dialysis it can be said that?
When comparing hemodialysis and peritoneal dialysis, it can be said that
Why can sperm enter the peritoneal cavity?
Because the female reproductive tract is continuous with the peritoneal cavity through the fallopian tubes, it is possible for sperm to enter the peritoneal cavity.
Do the kidneys lie within the peritoneal cavity?
Kidneys are retroperitoneal. There are in the abdominal cavity, but not in the peritoneal cavity.
