MYOSIN

mīˈəsĭn, one of the two major protein constituents responsible for contraction of muscle. In muscle cells myosin is arranged in long filaments called thick filaments that lie parallel to the microfilaments of actin. In muscle contraction, filaments of actin alternately chemically link and unlink with those of myosin in a creeping or sliding action. The energy for this reaction is supplied by adenosine triphosphate. Myosin and actin also function in the motility of diverse non-muscle cells. In slime molds, for example, although present in much smaller quantities and forming shorter filaments, the interaction of the two proteins is employed to change cell shape and permit some movements.

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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: Myosin
We found: 265 results
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127  

 

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102  

 

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4  
 

books on: Myosin  - 127 results

       More book Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
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 changes in the myosin molecule result in the movement of the actin filaments...contracts the muscle fiber. The mechanism by which myosin produces force and shortens the sarcomere is hypothesized...
2.
The Structure and Function of Muscle
Book by G. H. Bourne; Academic Press, 1960
Subjects: Muscles
...faster in fish and frog than in rabbit myosin, with simultaneous loss of ATPase activity...precipitated. The ATPase activity of myosin is influenced greatly by the presence...The understanding of the interaction of myosin with different ions is of great importance...
3.
General Physiology of Cell Specialization
Book by Daniel Mazia, Albert Tyler; McGraw-Hill, 1963
Subjects: Cytology
...protein system either extracted directly as "myosin B" or reconstituted from actin + myosin will show dimensional change upon reaction with...below . Large-scale dimensional change in myosin-ATP systems has been reported Engelhardt and...
4.
The Oxford Companion to the Mind
Book by Richard L. Gregory; Oxford University Press, 1998
Subjects: Neurophysiology--Dictionaries, Philosophy--Dictionaries, Psychology--Dictionaries
...muscle fibre are two proteins, actin and myosin, whose interactions provide a means of...sized protein molecular weight 60,000 ; myosin is substantially larger molecular weight...micrometres in length. These rods of actin and myosin are arranged within the muscle fibre in...
5.
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 leads...living cells. The ATP binds to the myosin head so that when the contraction cycle...lum one molecule ot ATl bound. The myosin head then binds to the actin t !:lIl1cnt...
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journal articles on: Myosin  - 102 results

       More journal Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
The Nonmuscle Myosin Phosphatase Pp1[Beta
Journal article by Jasmin Kirchner, Sascha Gross, Daimark Bennett, Luke Alphey; Vol. 175, 2007
Subjects: Apoptosis, Drosophila Proteins, JNK Mitogen-Activated Protein Kinases, Kinases, Myosin Type II, Myosin-Light-Chain Phosphatase, Phosphoprotein Phosphatase, Proteins, Wound healing, puc protein, Drosophila, spaghetti squash protein, Drosophila
The Nonmuscle Myosin Phosphatase Pp1Beta (Flapwing) Negatively...single essential function as a nonmuscle myosin phosphatase that is nonredundant with...not PP1;1, binds specifically to the myosin phosphatase-targeting subunit MYPT...
2.
Genetic Characterization of the Drosophila Jaguar^sup 322^ Mutant Reveals That Complete Myosin Vi Loss of Function Is Not Lethal
Journal article by Julie K. Morrison, Kathryn G. Miller; Genetics, Vol. 179, 2008
Subjects: Amino acids, Binding sites, DNA Primers, Fertility, Genotype & phenotype, Males, Myosin Heavy Chains, Proteins, Vertebrates, myosin VI
...K. Morrison , Kathryn G. Miller MYOSIN VI is an actin motor that is conserved...humans. This motor is unique among myosins in that it can move along actin filaments...characterized myosins. In addition, myosin VI can both move processively and...
3.
Drosophila Crinkled, Mutations of Which Disrupt Morphogenesis and Cause Lethality, Encodes Fly Myosin Viia
Journal article by Daniel P. Kiehart, Josef D. Franke, Mark K. Chee, R. A. Montague; Genetics, Vol. 168, 2004
Subjects: Genetics, Insects, Medical research, Models, Mutation, Proteins
...heads from other myosin superfamily members...the class I and II myosins, for which crystal...that allows other myosins to compensate for defects in myosin VIIA in vertebrates...in 120 of the 143 myosins shown on the Myosin Home Page (http...
4.
Caenorhabditis Elegans Unc-82 Encodes a Serine/threonine Kinase Important for Myosin Filament Organization in Muscle during Growth
Journal article by Pamela E. Hoppe, Johnnie Chau, Kelly A. Flanagan, April R. Reedy, Lawrence A. Schriefer; Genetics, Vol. 184, 2010
Subjects: Apoptosis, Embryos, Evacuations & rescues, Kinases, Regulation, Tissue
...phosphorylation motifs contained in the myosin nonhelical tailpiece: early patterning of myosin is normal, but aberrant...nonmuscle and smooth muscle myosins by phosphorylation (Castellani...elegans striated muscle, both myosin and paramyosin are phosphorylated...
5.
Essential, Overlapping and Redundant Roles of the Drosophila Protein Phosphatase 1[Alpha
Journal article by Jasmin Kirchner, Sascha Gross, Daimark Bennett, Luke Alphey; Vol. 176, 2007
Subjects: Cell cycle, Drosophila Proteins, Genes, Kinases, Membrane Proteins, Mutant Proteins, Myosin Heavy Chains, Phosphoprotein Phosphatase, Proteins, Recombinant Fusion Proteins, zipper protein, Drosophila
...analysis, revealing a function in nonmuscle myosin regulation (see RESULTS). Strong alleles...RAGHAVAN et al. 2000). The nonmuscle myosin phosphatase-targeting subunit MYPT...targets it to its substrate, nonmuscle myosin regulatory light chain (Spaghetti squash...
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magazine articles on: Myosin  - 30 results

       More magazine Results: 1-10 11-20 21-30 >>  
 
1.
Investigating Molecular Motors Step by Step
Magazine article by Jeffrey M. Perkel; The Scientist, Vol. 18, March 15, 2004
...Big Three of the cellular auto world-myosin, kinesin, and dynein-harness the power...already knew that conventional kinesin and myosin V both have two heads, each of which...Further, they knew that kinesin and myosin V do not move continuously (like a bead...
2.
Pulling Together: Mitotic Ring Self-Assembly Revealed
Magazine article by P. Barry; Science News, Vol. 172, December 15, 2007
Subjects: Mitosis--Research
...the ring of proteins contains actin and myosin, the same molecules that generate contractions...dividing yeast cells. By flagging actin and myosin with fluorescent proteins, the researchers...approximately 60 small nodules containing myosin and other proteins first gather at the...
3.
Walk like a Molecular Motor
Magazine article by Paul R. Selvin; The Scientist, Vol. 19, June 20, 2005
...shown how it is that two motors, myosin and kinesin, move about in vitro...motors operate in mammalian cells. Myosins, of which there are 18 different...individual motors is a mere 37 nm for myosin V and 8.3 nm for kinesin.1 The...
4.
Alternative Energy for Biomotors
Magazine article by Bennett Daviss; The Scientist, Vol. 18, September 27, 2004
...natures own motors: the proteins kinesin, myosin, and dynein, which turn adenosine triphosphate...the biomolecular motorcade. Kinesin and myosin have inspired investigators like Henry...of the cell," he says. A molecule of myosin hydrolyzing a molecule of ATP yields about...
5.
The Optical Trap
Magazine article by Don Monroe; The Scientist, Vol. 19, August 29, 2005
...calls a "lively argument" about how myosin moves. Spudich believed this molecular...polystyrene beads coated with purified myosin, which Spudich and Michael Sheetz (now...apparatus that could resolve the steps of a myosin-coated bead to within 10 nm. They applied...
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newspaper articles on: Myosin  - 2 results

 
 
1.
Hazel Hooper's Health Diary
Newspaper article; Daily Examiner (Grafton, Australia), October 7, 2009
...expecting Frank to appear as one of their, interesting pieces. Stretching causes the tiny fibres within a muscle (actin and myosin) to no longer overlap. Continued stretching causes the sheath surrounding the fibres to stretch, together with the tendons...
2.
Gene Mutation of Jaw Linked to Brain Evolution; Deactivated Muscle Facilitated Tripling of Size, Researchers Say
Newspaper article; The Washington Times, March 25, 2004
...Chromosome 7 as part of a medical search for human genes linked to a family of proteins called myosins that make muscles contract. They discovered a new myosin gene, called MYH16, that had one small mutation that made it inactive. This mutation was...


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encyclopedia articles on: Myosin  - 4 results

 
 
1.
Myosin
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
MYOSIN mi sin, one of the two major protein constituents...contraction of muscle. In muscle cells myosin is arranged in long filaments called thick...chemically link and unlink with those of myosin in a creeping or sliding action. The energy...
2.
Actin
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...they form part of the cells cytoskeleton, they interact with myosin to permit movement of the cell, and they pinch the cell into...cell division. In muscle contraction, filaments of actin and myosin alternately unlink and chemically link in a sliding action...
3.
Muscle
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...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 for muscle...
4.
Protein
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...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 shape...


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