What is the role of the heme prosthetic group in hemoglobin?
Heme of hemoglobin protein is a prosthetic group of heterocyclic ring of porphyrin of an iron atom; the biological function of the group is for delivering oxygen to body tissues, such that bonding of ligand of gas molecules to the iron atom of the protein group changes the structure of the protein by amino acid group …
What is the prosthetic group of heme?
Heme-a, is the heme prosthetic group of cytochrome c oxidase (COX) (ferrocytochrome c: oxygen oxidoreductase; EC 1.9.
What is the prosthetic group in hemoglobin?
The heme group in hemoglobin is a prosthetic group. Further examples of organic prosthetic groups are vitamin derivatives: thiamine pyrophosphate, pyridoxal-phosphate and biotin. Since prosthetic groups are often vitamins or made from vitamins, this is one of the reasons why vitamins are required in the human diet.
Is heme in hemoglobin A prosthetic group?
Heme is an iron(II)-centered porphyrin and the prosthetic group in many proteins including hemoglobin and cytochrome P450 enzymes.
What makes up a heme group?
chemical structure known as a heme group. Heme is composed of a ringlike organic compound known as a porphyrin, to which an iron atom is attached. It is the iron atom that reversibly binds oxygen as the blood travels between the lungs and the tissues.
What is the function of heme?
Heme is an essential molecule for living aerobic organisms and is involved in a remarkable array of diverse biological processes. In the cardiovascular system, heme plays a major role in gas exchange, mitochondrial energy production, antioxidant defense, and signal transduction.
What is prosthetic group and give example?
Prosthetic groups are non-protein components that attach mostly to proteins and assist the protein in various ways. When bound to proteins, prosthetic groups are called holoproteins. Some examples of prosthetic groups are heme, biotin, flavin, iron sulfides, copper and ubiquinone.
What is prosthetic group explain with example?
prosthetic group. A tightly bound nonpolypeptide structure required for the activity of an enzyme or other protein, for example the haem of haemoglobin.
What is a prosthetic group select the single best answer?
Prosthetic group is a tightly bound, specific non-polypeptide unit required for the biological function of some proteins. The prosthetic group may be organic (such as a vitamin, sugar, or lipid) or inorganic (such as a metal ion), but is not composed of amino acids.