ACTIN

a protein abundantly present in many cells, especially muscle cells, that significantly contributes to the cell's structure and motility. Actin can very quickly assemble into long polymer rods called microfilaments. These microfilaments have a variety of roles—they form part of the cell's cytoskeleton, they interact with myosin to permit movement of the cell, and they pinch the cell into two during cell division. In muscle contraction, filaments of actin and myosin alternately unlink and chemically link in a sliding action. The energy for this reaction is supplied by adenosine triphosphate.

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The Columbia Encyclopedia, Sixth Edition Copyright© 2004, Columbia University Press. Licensed from Lernout & Hauspie Speech Products N.V. All rights reserved.

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Questia Books and Articles on: Actin
We found: 982 results
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411  

 

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438  

 

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4  
 

books on: Actin  - 411 results

       More book Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
The Structure and Function of Muscle
Book by G. H. Bourne; Academic Press, 1960
Subjects: Muscles
...has been suggested Tsao, 1953b . It appears that binding is stronger to F-actin than to G-actin; at least, ATP can be removed by dialysis fairly easily from G-actin, while little ADP is lost from F-actin by the same process. Although dialysis...
2.
Life Itself: Exploring the Realm of the Living Cell
Book by Boyce Rensberger, Nigel Orme; Oxford University Press, 1996
Subjects: Cytology--Popular Works
...rigidity. In the cell, this network of actin filaments holds the membrane and thus determines...unlike metal girders of fixed length, actin filaments can grow or shrink at any time because they are polymers -- chains of actin subunits, or monomers. Most cells contain...
3.
Animal and Plant Anatomy - Vol. 6
Book by Marshall Cavendish; Marshall Cavendish, 2006
Subjects: Anatomy, Botany--Anatomy
The aliding of actin and myosin t , ments rotative to each other...bound. The myosin head then binds to the actin t !:lIl1cnt; and with the energy released...Owing to tins power stroke the myosin and actin tilaments slide against each other. This...
4.
The Oxford Companion to the Mind
Book by Richard L. Gregory; Oxford University Press, 1998
Subjects: Neurophysiology--Dictionaries, Philosophy--Dictionaries, Psychology--Dictionaries
...each muscle fibre are two proteins, actin and myosin, whose interactions provide a means of generating a force. Actin is a moderately sized protein molecular...micrometres in length. These rods of actin and myosin are arranged within the muscle...
5.
Our Marvelous Bodies: An Introduction to the Physiology of Human Health
Book by Gary F. Merrill; Rutgers University Press, 2008
Subjects: Human Physiology
After actin and myosin are bound, ATP-dependent conformational...myosin molecule result in the movement of the actin filaments toward the center of the sarcomere...site allowing energized myosin to bind to actin (step 2, state b). Myosin then undergoes...
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journal articles on: Actin  - 438 results

       More journal Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
Dissection of Arp2/3 Complex Actin Nucleation Mechanism and Distinct Roles for Its Nucleation-promoting Factors in Saccharomyces Cerevisiae
Journal article by Jessica L. D'Agostino, Bruce L. Goode; Genetics, Vol. 171, 2005
Subjects: Actin-Related Protein 2, Actin-Related Protein 2-3 Complex, Actins, Cell adhesion & migration, Cytoskeletal Proteins, Cytoskeleton, Fungal Proteins, Genetics, LAS17 protein, S cerevisiae, MYO3 protein, S cerevisiae, MYO5 protein, S cerevisiae, Myosin Heavy Chains, Myosin Type I, PAN1 protein, fungal, Proteins, Saccharomyces cerevisiae Proteins, Wiskott-Aldrich Syndrome Protein
Dissection of Arp2/3 Complex Actin Nucleation Mechanism and Distinct Roles for...DAgostino , Bruce L. Goode NUCLEATION of actin filament assembly is a key control point in the regulation of actin network formation. The Arp2/3 complex...
2.
Biochemical and Genetic Analyses Provide Insight into the Structural and Mechanistic Properties of Actin Filament Disassembly by the Aip1p-cofilin Complex in Saccharomyces Cerevisiae
Journal article by Michael G. Clark, David C. Amberg; Genetics, Vol. 176, 2007
Subjects: Binding sites, Cofilin 1, Cytoskeleton, Microfilament Proteins, Multiprotein Complexes, Proteins, Saccharomyces cerevisiae Proteins, actin interacting protein 1
...interaction sites on actin by differential interaction...binding footprints on actins surface have been previously...of cofilin-bound actin subunits, as this would have caused actins pellet:supernatant ratios to mirror the actin:cofilin ratio of...
3.
Identification of Novel Mutations in Act1 and Sla2 That Suppress the Actin-cable-overproducing Phenotype Caused by Overexpression of a Dominant Active Form of Bni1p in Saccharomyces Cerevisiae
Journal article by Shiro Yoshiuchi, Takaharu Yamamoto, Hiroshi Sakane, Jun Kadota; Genetics, Vol. 173, 2006
Subjects: Act1 protein, S cerevisiae, Actins, BUD6 protein, S cerevisiae, Bni1 protein, S cerevisiae, CDC3 protein, S cerevisiae, Carrier Proteins, Cell Cycle Proteins, Cytoskeleton, Gene expression, Genotype & phenotype, Microfilament Proteins, Mutation, Plasma, Profilins, Proteins, SLA2 protein, S cerevisiae, Saccharomyces cerevisiae Proteins, Yeast
...Mutations in Act1 and Sla2 That Suppress the Actin-cable-overproducing Phenotype Caused...Yamamoto , Hiroshi Sakane , Jun Kadota THE actin cytoskeleton plays essential roles in a...endocytosis. The dynamic organization of the actin cytoskeleton is spatially and temporally...
4.
Requirement for the Polarisome and Formin Function in Ssk2p-mediated Actin Recovery from Osmotic Stress in Saccharomyces Cerevisiae
Journal article by Blaine T. Bettinger, Michael G. Clark, David C. Amberg; Genetics, Vol. 175, 2007
Subjects: Actins, BNR1 protein, S cerevisiae, BUD6 protein, S cerevisiae, Bni1 protein, S cerevisiae, Cells, Cytoskeletal Proteins, Cytoskeleton, DNA Primers, Fungal Proteins, HOG1 protein, S cerevisiae, Kinases, Microfilament Proteins, Mitogen-Activated Protein Kinases, Osmosis, PEA2 protein, fungal, Protein-Serine-Threonine Kinases, Proteins, SSK2 protein, S cerevisiae, Saccharomyces cerevisiae Proteins, Tropomyosin
...Polarisome and Formin Function in Ssk2p-mediated Actin Recovery from Osmotic Stress in Saccharomyces...transient and reversible disassembly of the actin cytoskeleton (CHOWDHURY et al. 1992). The actin cytoskeleton plays a vital role in the response...
5.
The Saccharomyces Cerevisiae Actin Cytoskeletal Component Bsp1p Has an Auxiliary Role in Actomyosin Ring Function and in the Maintenance of Bud-neck Structure
Journal article by Daniel J. Wright, Ewen Munro, Mark Corbett, Adam J. Bentley, Nigel J. Fullwood, Stephen Murray, Clive Price; Genetics, Vol. 178, 2008
Subjects: Actins, Actomyosin, Adaptor Proteins, Vesicular Transport, Amino acids, Binding sites, Bsp1 protein, S cerevisiae, CACHS3 protein, Fungal, Chitin, Chitin Synthase, Fungal Proteins, IQ motif containing GTPase activating protein 1, Kinases, Mutation, Proteins, Saccharomyces cerevisiae Proteins, ras GTPase-Activating Proteins
The Saccharomyces Cerevisiae Actin Cytoskeletal Component Bsp1p Has an Auxiliary...eukaryotic cells and both are dependent upon the actin cytoskeleton. Growth polarity requires that a polarized actin cytoskeleton directs secretion and delivery...
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magazine articles on: Actin  - 96 results

       More magazine Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
Settling an Oocyte Actin Conundrum
Magazine article; The Scientist, Vol. 20, May 2006
Settling an Oocyte Actin Conundrum Actin is actively cleared from the nuclei of most eukaryotic cells with...oocytes. This discrepancy has led to speculations about exotic actin conformations serving equally exotic functions in specialized nuclei...
2.
First Actin-binding Protein, Circa 1975
Magazine article by Megan Scudellari; The Scientist, Vol. 22, September 2008
Subjects: Cells, Molecular weight, Proteins
First Actin-binding Protein, Circa 1975 by Megan...revelation that non-muscle cells contained actin and myosin, but no one understood the mechanism...polymer they would soon identify as the first actin-binding protein, later called filamin...
3.
Freeze-frame
Magazine article by Kelly Rae Chi; The Scientist, Vol. 25, February 2011
Subjects: Biophysics, Cytoskeleton, Proteins, Studies
...or cytoskeleton, which is made up of actin filaments and microtubules. Researchers...mechanical and electrical properties of actin filaments and the motion of their myosin...single-molecule studies of motors, the actin filament or other filament track is attached...
4.
Scratching the Cell Surface
Magazine article by Aileen Constans; The Scientist, Vol. 18, November 22, 2004
...depolymerization of microtubules, to visualize the actin cytoskeleton in fast-moving cells, and...study the dynamics of microtubules and actin filaments. The researchers then combined...TIRF to look at interactions between the actin cytoskeleton and focal adhesion complexes...
5.
Protein Complex Helps Clotting
Magazine article; USA Today (Society for the Advancement of Education), Vol. 131, October 2002
Subjects: Blood clotting--Research, Blood coagulation--Research, Brown University--Research, Medical research--Analysis, Protein research--Analysis
...process. The process of filament formation is called actin polymerization. Actin filaments are fine threads composed of multiple subunits...cancer. For 50 years, scientists have known that actin was required for shape change. Until now, they were...
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newspaper articles on: Actin  - 33 results

       More newspaper Results: 1-10 11-20 21-30 31-33 >>  
 
1.
ECC Men's Soccer Team Scores Shutout
Newspaper article; Daily Herald (Arlington Heights, IL), September 20, 2006
Subjects: Soccer, Soccer teams
...and Brandon Weingartner (51) finished the scorecard for Westminster Christian. Streamwood d. Elgin: In Upstate Eight actin Tuesday, Streamwood (3-5,3-4) eased by Elgin 165 to 194. The Sabres Yuki Palermo led all scorers with a 38. Garett...
2.
Various Artists, "Country Strong: Original Motion Picture Soundtrack" (RCA Nashv
Newspaper article; Daily Herald (Arlington Heights, IL), January 7, 2011
Subjects: Music industry
...out: Ronnie Dunns first solo offering since the end of Brooks Dunn goes back to the barrooms with a superb version of "Shes Actin Single (Im Drinking Doubles)," a Wayne Carson song that the late Gary Stewart turned into a honky-tonk classic. -- Associated...
3.
Sorry, Tom,it Won't Take Off
Newspaper article; The Mail on Sunday (London, England), September 5, 2004
Subjects: Hanks, Tom, Spielberg, Steven
...leading actor of female roles of his day and a promiscuous bisexual. As you would expect from an Eyre production, all the actin g is highqu a l i t y and it is particularlyenjoyable seeing-Rupert Everett giving virtually the same performance as Charles...
4.
A Bit Less Bite Than Hannibal; Films of the Week
Newspaper article; The Mail on Sunday (London, England), April 22, 2007
...pictures in which she has to run around in tight, strappy tops while her co-stars spout lines such as: Jim says his cattle are actin awful strange. Sadly, in The Reaping, as formulaic a supernatural chiller as you could possibly find, its not just Jims...
5.
RICKY DIGS IN FOR AN OSCAR ; Body Snatcher: Hatton (Top) Celebrates His Fourth Round Knock-Out of Castillo with a Brutal Shot to the Body (Left)
Newspaper article; The Daily Mail (London, England), June 25, 2007
Subjects: Castillo, Luis
...life draws heavily on those northern comedy classicsPhoenix Nights and The Royle Family but his boxing career is now a headline actin Las Vegas, London and New York. Brutal in the ring and brilliantly articulate outside it, Hatton is now anAmerican billboard...
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encyclopedia articles on: Actin  - 4 results

 
 
1.
Actin
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
ACTIN a protein abundantly present in many cells...contributes to the cells structure and motility. Actin can very quickly assemble into long polymer...division. In muscle contraction, filaments of actin and myosin alternately unlink and chemically...
2.
Myosin
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...filaments that lie parallel to the microfilaments of actin . In muscle contraction, filaments of actin alternately chemically link and unlink with...supplied by adenosine triphosphate . Myosin and actin also function in the motility of diverse non...
3.
Muscle
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...thousand tightly packed strands called myofibrils that consist of alternating filaments of the protein substances actin and myosin . Actin and myosin interact before muscle contraction, forming the contractile material actomyosin. The energy required...
4.
Protein
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...system (see immunity ); protein hormones , which regulate metabolism ; and proteins that perform mechanical work, such as actin and myosin , the contractile muscle proteins. Protein Structure Every protein molecule has a characteristic three-dimensional...


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