Results 251 to 260 of about 297,493 (288)

The Mitochondrial Protein Import Motor

Biological Chemistry, 2000
Mitochondrial proteins are synthesized as precursor proteins in the cytosol and are posttranslationally imported into the organelle. A complex system of translocation machineries recognizes and transports the precursor polypeptide across the mitochondrial membranes.
Strub, Andreas, Lim, Joo Hyun, Pfanner, Nikolaus, Voos, Wolfgang   +3 more
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The Bacterial RecA Protein as a Motor Protein

Annual Review of Microbiology, 2003
▪ Abstract  The bacterial RecA protein plays a central role in the repair of stalled replication forks, double-strand break repair, general recombination, induction of the SOS response, and SOS mutagenesis. The major activity of RecA in DNA metabolism is the promotion of DNA strand exchange reactions.
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Motor proteins for cytoplasmic microtubules

Current Opinion in Cell Biology, 1992
It has been thought that motile structures within the cell are driven toward the plus and minus ends of microtubules by the ATPases, kinesin and dynein, respectively. Recently obtained data indicate that this model is far too simplistic. Kinesin is now understood to be one representative of a family of proteins. Another member of the kinesin family has
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Association of motor proteins with membranes

Current Opinion in Cell Biology, 1991
The motility of intracellular components, and of the cell as a whole, is mediated by cytoplasmic motor proteins. This review discusses what is known about the binding of cytoplasmic motors to membranes. Mechanisms by which these interactions may result in observed motile phenomena are proposed.
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Motor proteins in cell division

Trends in Cell Biology, 1991
The movements of eukaryotic cell division depend upon the conversion of chemical energy into mechanical work, which in turn involves the actions of motor proteins, molecular transducers that generate force and motion relative cytoskeletal elements. In animal cells, microtubule-based motor proteins of the mitotic apparatus are involved in segregating ...
K E, Sawin, J M, Scholey
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Mechanisms of motor protein reversal

Current Opinion in Cell Biology, 2001
Members of the kinesin superfamily of microtubule-based motors and the myosin superfamily of actin-based motors that move 'backwards' have been identified. As the core catalytic domains of myosins and kinesins are similar in structure, this raises the intriguing questions of how direction reversal is accomplished and whether kinesins and myosins share ...
T, Hasson, R E, Cheney
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The protein import motor of mitochondria

Nature Reviews Molecular Cell Biology, 2002
Proteins that are destined for the matrix of mitochondria are transported into this organelle by two translocases: the TOM complex, which transports proteins across the outer mitochondrial membrane; and the TIM23 complex, which gets them through the inner mitochondrial membrane. Two models have been proposed to explain how this protein-import machinery
Walter, Neupert, Michael, Brunner
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Microtubule-based motor proteins

Current Opinion in Cell Biology, 1990
Virtually all eukaryotes actively transport or position intracellular components (for example, chromosomes or membrane-bounded organelles), and some cells have developed means of moving through aqueous environments or on top of substrates. Such motile processes invob,'ed interactions between cytoskeletal fibers and 'motor' proteins that generate force ...
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Regulation of molecular motor proteins

2001
Motor proteins in the kinesin, dynein, and myosin superfamilies are tightly regulated to perform multiple functions in the cell requiring force generation. Although motor proteins within families are diverse in sequence and structure, there are general mechanisms by which they are regulated.
A R, Reilein, S L, Rogers, M C, Tuma, V I, Gelfand   +3 more
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The structure of microtubule motor proteins

2005
Microtubules are the intracellular tracks for two classes of motor proteins: kinesins and dyneins. During the past few years, the motor domain structures of several kinesins from different organisms have been determined by X-ray crystallography. Compared with kinesins, dyneins are much larger proteins and attempts to crystallize them have failed so far.
A, Marx, J, Müller, E, Mandelkow
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