Library / English Dictionary

MYOGLOBIN

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

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

Classified under:

Nouns denoting substances

Hypernyms ("myoglobin" is a kind of...):

haemoprotein; hemoprotein (a conjugated protein linked to a compound of iron and porphyrin)

Meronyms (substance of "myoglobin"):

haem; haemitin; hematin; heme; protoheme (a complex red organic pigment containing iron and other atoms to which oxygen binds)

Credits

 Context examples: 

Skeletal muscle fibers having low myofibrillar ATPase activity, low glycogen content, and high myoglobin content, high mitochondrial oxidative enzyme activities, and an intermediate mitochondrial content which produce a slow twitch and are fatigue-resistant.

(Muscle Fibers, Slow-Twitch, NLM, Medical Subject Headings)

A type of striated skeletal muscle fiber that contracts quicker than a red fiber but slower than a white fiber and contains only a moderate amount of mitochondria, myoglobin and sarcoplasm.

(Intermediate Fiber, NCI Thesaurus)

This agent does not readily bind iron from transferrin, hemoglobin, myoglobin or cytochrome.

(Deferoxamine, NCI Thesaurus)

Fast fatigable fibers, also called white fibers, have a low myoglobin content, and a small mitochondrial content, and fatigue rapidly due to their limited glycogen content and low capacity for oxidative metabolism.

(Muscle Fibers, Fast-Twitch, NLM, Medical Subject Headings)