Definitions for myoglobin
ˌmaɪ əˈgloʊ bɪn, ˈmaɪ əˌgloʊ-; ˌmaɪ əˈhi məˌgloʊ bɪnmyo·globin

Princeton's WordNetRate this definition:0.0 / 0 votes

1. myoglobinnoun

   a hemoprotein that receives oxygen from hemoglobin and stores it in the tissues until needed

WiktionaryRate this definition:0.0 / 0 votes

1. myoglobinnoun

   A small globular protein, containing a heme group, that carries oxygen to muscles

WikipediaRate this definition:0.0 / 0 votes

1. Myoglobin

   Myoglobin (symbol Mb or MB) is an iron- and oxygen-binding protein found in the cardiac and skeletal muscle tissue of vertebrates in general and in almost all mammals. Myoglobin is distantly related to hemoglobin. Compared to hemoglobin, myoglobin has a higher affinity for oxygen and does not have cooperative binding with oxygen like hemoglobin does. In humans, myoglobin is only found in the bloodstream after muscle injury.High concentrations of myoglobin in muscle cells allow organisms to hold their breath for a longer period of time. Diving mammals such as whales and seals have muscles with particularly high abundance of myoglobin. Myoglobin is found in Type I muscle, Type II A, and Type II B; although many texts consider myoglobin not to be found in smooth muscle, this has proved erroneous: there is also myoglobin in smooth muscle cells.Myoglobin was the first protein to have its three-dimensional structure revealed by X-ray crystallography. This achievement was reported in 1958 by John Kendrew and associates. For this discovery, Kendrew shared the 1962 Nobel Prize in chemistry with Max Perutz. Despite being one of the most studied proteins in biology, its physiological function is not yet conclusively established: mice genetically engineered to lack myoglobin can be viable and fertile, but show many cellular and physiological adaptations to overcome the loss. Through observing these changes in myoglobin-depleted mice, it is hypothesised that myoglobin function relates to increased oxygen transport to muscle, and to oxygen storage; as well, it serves as a scavenger of reactive oxygen species.In humans, myoglobin is encoded by the MB gene.Myoglobin can take the forms oxymyoglobin (MbO2), carboxymyoglobin (MbCO), and metmyoglobin (met-Mb), analogously to hemoglobin taking the forms oxyhemoglobin (HbO2), carboxyhemoglobin (HbCO), and methemoglobin (met-Hb).

ChatGPTRate this definition:0.0 / 0 votes

1. myoglobin

   Myoglobin is a type of protein found in the muscle cells of vertebrates and some mammals. It stores oxygen for later use when the muscles are performing physical activity. Myoglobin also provides a red color to the muscle tissues. Its structure is similar to a subunit of hemoglobin, which carries oxygen in the blood. However, unlike hemoglobin, it only contains one heme group and is not associated with other proteins. Lack of this protein can result in conditions such as muscle fatigue.

WikidataRate this definition:0.0 / 0 votes

1. Myoglobin

   Myoglobin is an iron- and oxygen-binding protein found in the muscle tissue of vertebrates in general and in almost all mammals. It is related to hemoglobin, which is the iron- and oxygen-binding protein in blood, specifically in the red blood cells. Myoglobin is only found in the bloodstream after muscle injury. It is an abnormal finding, and can be diagnostically relevant when found in blood. Myoglobin is the primary oxygen-carrying pigment of muscle tissues. High concentrations of myoglobin in muscle cells allow organisms to hold their breaths longer. Diving mammals such as whales and seals have muscles with particularly high myoglobin abundance. Myoglobin was the first protein to have its three-dimensional structure revealed. In 1958, John Kendrew and associates successfully determined the structure of myoglobin by high-resolution X-ray crystallography. For this discovery, John Kendrew shared the 1962 Nobel Prize in chemistry with Max Perutz. Despite being one of the most studied proteins in biology, its true physiological function is not yet conclusively established: mice genetically engineered to lack myoglobin are viable, but showed a 30% reduction in volume of blood being pumped by the heart during a contraction. They adapted to this deficiency through natural reactions to inadequate oxygen supply and a widening of blood vessels. In humans myoglobin is encoded by the MB gene.

U.S. National Library of MedicineRate this definition:0.0 / 0 votes

1. Myoglobin

   A conjugated protein which is the oxygen-transporting pigment of muscle. It is made up of one globin polypeptide chain and one heme group.

Matched Categories

1. • Hemoprotein

Anagrams for myoglobin »

1. boomingly

How to pronounce myoglobin?

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Numerology

1. Chaldean Numerology

   The numerical value of myoglobin in Chaldean Numerology is: 6

2. Pythagorean Numerology

   The numerical value of myoglobin in Pythagorean Numerology is: 4

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References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=myoglobin
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Myoglobin
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Myoglobin
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=myoglobin