myoglobin
Meaning
An iron-containing protein found in muscle fibers, similar to hemoglobin, that binds and stores oxygen.
Structure
Usage
Myoglobin gives meat its red color.
During strenuous exercise, myoglobin releases its stored oxygen to the muscle.
High levels of myoglobin in the blood can indicate muscle damage.
Etymology
The word 'myoglobin' is a modern scientific compound formed in the early 20th century from two classical roots. The first element, 'myo-', traces back to the Ancient Greek word for muscle, mys, reflecting the protein's specific location in muscle tissue. The second element, '-globin', derives from the Latin globus (a round body, sphere), alluding to the characteristic globular, spherical shape of this class of proteins, as seen in its relative, hemoglobin. Thus, the term's literal construction as "muscle sphere-protein" logically describes an oxygen-storing, ball-shaped protein found within muscle cells.
Analysis
- myo: From Greek mys (genitive myos) meaning "muscle". It functions as a combining form denoting a relationship to muscle. - globin: From Latin globus meaning "sphere, ball". In biochemistry, it functions as a suffix denoting a globular protein, specifically one related to hemoglobin.