Results 241 to 250 of about 31,449 (270)

Microfilaments from amoeba proteins

Experimental Cell Research, 1971
Summary Bundles of microfilaments have been obtained from a fraction of homogenised amoebae cells after the addition of EDTA. These bundles are made up of many single microfilaments 30–40 A in diameter. An attempt has been made to obtain the protein subunit of these microfilaments. In the detergent Sarkosyl, a subunit of sedimentation constant 2.0×10−
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Microfilament organization in human platelets

La Ricerca in Clinica e in Laboratorio, 1985
Morphological and biochemical studies suggest that actin in human platelets polymerizes from monomers or oligomers into long filaments more tightly structured in activated than in resting platelets. The polymerization and reorganization of actin filaments are regulated by cellular proteins.
E, Maioli, A, Pacini, A, Viti
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Microfilaments inNaegleria fowleri amoebae

Zeitschrift für Parasitenkunde, 1976
Examination by electron microscopy has revealed 2 types of microfilament in the cytoplasm of 3 strains of axenically grown Naegleria fowleri amoebae. Thin, actin-like microfilaments 5-7 nm in diameter are randomly oriented in the nonmotile amoebae, and are concentrated near the plasma membrane.
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Statoliths pull on microfilaments

Protoplasma, 1993
Previous videomicroscopy of Chara rhizoids during parabolic flights of rockets showed that the weightless statoliths moved basipetally. A hypothesis was offered that the removal of gravity force disturbed the initial balance between this force and the basipetally acting forces generated in a dynamic interaction of statoliths with microfilaments (MFs ...
B, Buchen, M, Braun, Z, Hejnowicz, A, Sievers   +3 more
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Microfilament-membrane interaction

Trends in Biochemical Sciences, 1985
Abstract One of the major topics of research in modern cell biology involves the structure and organization of the cytoskeleton and, in particular, the interaction of its various components with the plasma membrane. Studies carried out in many laboratories over the last several years pointed to the complex and heterogeneous nature of membrane ...
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Phallotoxins and Microfilaments

1976
Phalloidin (Formula 1a) is one of the toxic components of the toadstool Amanita phalloides (Wieland, 1968); it is accompanied in the mushroom by several toxic relatives of which only phallacidin (Formula 1b) is shown in the general formula. Chemical manipulations can also lead to toxic derivatives or can annihilate the toxicity of the molecule.
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Effects of microfilament disrupters on microfilament distribution and morphology in maize root cells

Histochemistry, 1987
Maize root tip cells were examined for the distribution of actin microfilaments in various cell types and to determine the effects of microfilament disrupters. Fluorescence microscopy on fixed, stabilized, squashed cells using the F-actin specific probe, rhodamine-labelled phalloidin, allowed for a three-dimensional visualization of actin ...
M A, Vaughan, K C, Vaughn
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Microfilament-membrane interactions inXenopus myocytes

Cell Motility and the Cytoskeleton, 1996
We used quick-freeze, deep-etch, rotary-replication transmission electron microscopy to determine at molecular resolution the organization of microfilaments at the cytoplasmic surface of the sarcolemma of Xenopus myocytes. We demonstrate that actin microfilaments interact with the sarcolemma in two distinct ways.
S J, Samuelsson, P W, Luther, R J, Bloch
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Neuronal Microtubules, Neurofilaments, and Microfilaments

1972
Publisher Summary Interest in the structural proteins of neurons has increased in past years as a result of the convergence of three lines of investigation. First, with improved methods of fixation, microtubules and neurofilaments have been described as constant components of nerve cells and thus neuronal organelles. Such recognition has led to their
R B, Wuerker, J B, Kirkpatrick
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Actin microfilaments in fungi

Mycologist, 2006
Abstract The cytoskeletal protein actin is among the most abundant proteins in nature. It is almost ubiquitous, occurring in all eukaryotes and in an ancestral form in prokaryotes. Actin monomers can polymerise to form microfilaments, structures that play a critical role in a number of fundamental cell processes in fungi such as morphogenesis ...
Sophie K. Walker, Ashley Garrill
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