myoglobin

[mahy-uh-gloh-bin, mahy-uh-gloh-]
noun Biochemistry.
hemoglobin of muscle, weighing less and carrying more oxygen and less carbon monoxide than blood hemoglobin.
Also, myohemoglobin [mahy-uh-hee-muh-gloh-bin, hem-uh] .


Origin:
1920–25; myo- + globin

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Collins
World English Dictionary
myoglobin (ˌmaɪəʊˈɡləʊbɪn)
 
n
a protein that is the main oxygen-carrier of muscle

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

myoglobin my·o·glo·bin (mī'ə-glō'bĭn)
n.
Abbr. Mb
The oxygen-transporting protein of muscle, resembling blood hemoglobin in function but with only one heme as part of the molecule and with one fourth the molecular weight. Also called muscle hemoglobin.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
myoglobin   (mī'ə-glō'bĭn)  Pronunciation Key 
An iron-containing protein found in muscle fibers, consisting of heme connected to a single peptide chain that resembles one of the subunits of hemoglobin. Myoglobin combines with oxygen released by red blood cells and transfers it to the mitochondria of muscle cells, where it is used to produce energy.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

myoglobin

a protein found in the muscle cells of animals. It functions as an oxygen-storage unit, providing oxygen to the working muscles. Diving mammals such as seals and whales are able to remain submerged for long periods because they have greater amounts of myoglobin in their muscles than other animals do.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
The key, she believes, may be the iron content of the blood and muscle proteins hemoglobin and myoglobin.
The human body needs iron to make the oxygen-carrying proteins hemoglobin and myoglobin.
Cosmetically, this is added to sausage because it combines with myoglobin in animal muscle to keep it from turning gray.
He will dissolve samples of the coprolite in a buffer solution and then add antibodies that recognize myoglobin.
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