Plasma protein
Plasma protein
Plasma proteins, also known as serum proteins or blood proteins, are proteins present in blood plasma. They serve many different functions, including transport of lipids, hormones, vitamins, and minerals in activity and functioning of the immune system. Other blood proteins act as enzymes, complement components, protease inhibitors or kinin precursors.
Pronunciation
- IPA: /ˈplæzmə ˈproʊtiːn/
Etymology
The term "plasma" is derived from the Ancient Greek word πλάσμα (plasma), meaning 'moldable substance' or 'jelly', and "protein" from the Greek πρωτεῖος (proteios), meaning 'primary' or 'in the lead'.
Types of Plasma Proteins
There are three main types of plasma proteins: Albumin, Globulins, and Fibrinogen.
Albumin
Albumin is the most abundant plasma protein and is primarily produced in the liver. It functions as a carrier protein for several endogenous substances and drugs, and maintains the oncotic pressure of the blood.
Globulins
Globulins are a group of proteins within the blood. They play an important role in liver function, blood clotting, and fighting infection.
Fibrinogen
Fibrinogen is a soluble plasma glycoprotein, synthesized by the liver, that is converted by thrombin into fibrin during blood coagulation.
Functions of Plasma Proteins
Plasma proteins perform a wide range of functions and are crucial for various biological processes. They play a significant role in maintaining the osmotic pressure, distribution of fluid between blood and tissues, blood clotting, immune responses, and transportation of various substances.
See Also
External links
- Medical encyclopedia article on Plasma protein
- Wikipedia's article - Plasma protein
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