Share on Facebook Share on Twitter Email
Answers.com

myofilament

 
Dictionary: my·o·fil·a·ment   (mī'ə-fĭl'ə-mənt) pronunciation
Home > Library > Literature & Language > Dictionary
n.
Any of the ultramicroscopic filaments, made up of actin and myosin, that are the structural units of a myofibril.


Search unanswered questions...

Enter a question here...
Search: All sources Community Q&A Reference topics

Sports Science and Medicine: myofilament
Top
Home > Library > Health > Sports Science and Medicine

A contractile protein filament, made of either actin or myosin, found in a sarcomere.

Veterinary Dictionary: myofilament
Top
Home > Library > Animal Life > Veterinary Dictionary

Any of the ultramicroscopic threadlike structures composing the myofibrils of striated muscle fibers.

Wikipedia: Myofilament
Top
Home > Library > Miscellaneous > Wikipedia
Myofilament

The filaments of myofibrils constructed from proteins, myofilaments,[1] consist of 2 types, thick and thin.

  • Thin filaments consist primarily of the protein actin.
  • Thick filaments consist primarily of the protein myosin.

The protein complex composed of actin and myosin is sometimes referred to as "actomyosin." In striated muscle, such as skeletal and cardiac muscle, the actin and myosin filaments each have a specific and constant length on the order of a few micrometers, far less than the length of the elongated muscle cell (a few millimeters in the case of human skeletal muscle cells). The filaments are organized into repeated subunits along the length of the myofibril. These subunits are called sarcomeres.

See also

References

  1. ^ myofilament at Dorland's Medical Dictionary

External links

v • d • e
Histology: muscle tissue
Striated
muscle
Membrane/
extracellular
Intracellular
General
General
Fiber
Sarcomere/
(a, i, and h bands;
z and m lines)
Cells
Other
Smooth
muscle
Other/
ungrouped
v • d • e
Proteins of the cytoskeleton
Human
Myofilament
Actins (A1, A2, B, G1, G2)

Myosins (1A, 1B, 1C, MYH1, MYH2, MYH3, MYH4, MYH6, MYH7, MYH7B, MYH8, MYH9, MYH10, MYH11, MYH13, MYH14, MYH15, MYH16)

Tropomodulin (1, 2, 3, 4) · Troponin (T 1 2 3, C 1 2, I 1 2 3) · Tropomyosin (1, 2, 3, 4)

other related: Actinin (1, 2, 3, 4) · Arp2/3 complex · actin depolymerizing factors (Cofilin (1, 2) · Destrin) · Gelsolin · Profilin (1, 2)
Other
type 1 and 2 (Cytokeratin, type I, type II) · type 3 (Desmin, GFAP, Peripherin, Vimentin) · type 4 (Internexin, Nestin, Neurofilament, Synemin, Syncoilin) · type 5 (Lamin A, B)
Other
Nonhuman
Stub icon This cell biology article is a stub. You can help Wikipedia by expanding it.

This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)

 
 

 

Copyrights:

Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.  Read more
Sports Science and Medicine. The Oxford Dictionary of Sports Science & Medicine. Copyright © Michael Kent 1998, 2006, 2007. All rights reserved.  Read more
Veterinary Dictionary. Saunders Comprehensive Veterinary Dictionary 3rd Edition. Copyright © 2007 by D.C. Blood, V.P. Studdert and C.C. Gay, Elsevier. All rights reserved.  Read more
Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "Myofilament".  Read more