filament

Plants, animals share molecular growth mechanisms

... "Perhaps by learning about this pathway for actin filament formation, we can engineer plant cells to grow in different ways or alter how cells respond to external stimuli so they can defend themselves against insect or fungal attacks," Szymanski said. A protein complex known as Actin Related Protein 2/3 (AR...

Open microfluidic and nanofluidic systems

...etry with the substrate wettability. Thus, a water filament in a narrow channel that has a width of 100 nanome...e channel had a width of one millimeter, the water filament could only sustain a thousandth part of an atmosphere. One relatively simple application of the mor...

DNA Recombination and Repair—A New Twist to RecA Function

...ons can be mended. But how RecA molecules within a filament coordinate and organize their activities to carry ...ein with DNA. Previous experiments have shown that filament assembly spreads rapidly in the 5'-to-3' direction once the first RecA molecule is loaded onto DNA. ...

Scientists discover that host cell lipids facilitate bacterial movement

...to the ends of actin filaments, allowing new actin filament assembly. Because Listeria is capable of stimulating actin assembly and PIP2 and PIP3 are known to localize to regions of new actin assembly, Dr. Southwick and his colleagues decided to explore the roles these lipids play in Listeria infection. "We...

Marine sponge yields nanoscale secrets

...nter of the sponge's fine glass needles contains a filament of protein that controls the synthesis of the needles. By cloning and sequencing the DNA of the gene that codes for this protein, they found that the protein is an enzyme that acts as a catalyst –?a surprising discovery. Never before had a protein be...

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Transfection of Green Fluorescent Protein into Human Adrenalcarcinoma Cells

...xpression and is thought to containno intermediate filament network. 1 Although we have previously hadsuccess using this cell line for transfection studies using calcium phosphate, 2,3 two recent observations have led us to look for new methods that would improveour efficiency. First, we have found that some...

A new wide field-of-view confocal imaging system and its applications in drug discovery and pathology

...cope, the commonly used light sources are tungsten filament lamps with a continuum of blackbody radiation, or xenon arc lamps with a continuum between 300 and 800 nm. 21 However, in the brightfield detection mode of the wide field-of-view imaging system presented in this paper, the red, green and blue (RGB) ...

filament at Biology Definition

Myosin

Myosin is a motor protein filament found in muscle tissue . Together with actin ... sarcomere , which is composed of three different filament systems, the thin filaments assembled by actin proteins, the thick filament system consisting ...

Actin

...free to polymerize. Another important component in filament production is the Arp2/3 proteins , which serve a...e myosin head then releases after moving the actin filament in a relaxing or contracting movement by usage of ADP. In contractile bundles, the actin-bundling p...

Intermediate filament

... Neurofilament-H (NF-H) Nestin Intermediate filament type VI. It is found in neural stem cells . Cell adhesion At the plasma membrane , IFs are attached by adapter proteins forming desmosomes (cell-cell adhesion) and hemidesmosomes (cell-matrix adhesion)....

Flagellum

... External links Bacterial flagellum The filament is composed of the protein flagellin and is a ho...g is directly attached to the plasma membrane. The filament ends with a capping protein. The bacterial flagellum is driven by a rotary engine composed of pro...

Ebola

...be between 60-80 nm in diameter; the length of a filament associated with an individual viral particle is extremely variable, with Ebola particles of up to 14,000 nm in length being reported. An average length, which may represent the most infectious particles, is in the region of 1000 nm. The first electro...

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filament at Biology Dictionary

Tubulin

...rticle >>> microtubules -- Type of filament in eukaryotic cells composed of units of the protein tubulin . Among other functions, it is the primary structural component of the eukaryotic flagellum . Full article >>> In particular, he has devised a system that can discrimin...

Thermoregulation

...ternal temperature within a tolerable range. thick filament ... Full article >>> Thermoregulation The skeletal muscle s can shiver to produce heat if the body temperature is too low. Non-shivering thermogenesis involves the decomposition of fat to produce heat. Sweating cools the body with...

Thallus

...ull article >>> It germinates into a filament of cells . This grows into a pro thallus with rhizoid s, which absorb water and minerals from the soil; archegonia, which produce a single egg (by mitosis ); anther idia, which form swimming sperm (again, by mitosis ). Full article &#...

Stem cell

...n of the germarium, immediately under the terminal filament (Fig. 1A). Full article >>> B cell A type of lymph ocyte derived from bone marrow stem cell s that matures into an immunologically competent cell under the influence of the bursa of Fabricius in the chicken, and the bone marrow...

Stamen

...aining the microsporangia and supported by a thin filament ... Full article >>> stamen : the ...cture of a flower that contains a thin, stemlike filament and an anther . stomata : the pores within leaves surrounded by guard cell s that regulate the ra...

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filament at Medicine News

Mini motor for micromedical applications

...or to allow the light delivered by the fibre optic filament to illuminate a larger area of the upper digestive tract and physicians to view larger areas. “Also, because these motors are not electromagnetic, but electromechanical or piezoelectric, they are inherently non magnetic, which, with proper choice of ...

A New Focus For The Mechanism Of Nerve Growth

...vance depends on the coordinated assembly of actin filament networks. This study implicates the molecular moto...croscopy, or FSM, that let them directly see actin filament assembly, disassembly and movement in living cells. They used FSM to monitor actin dynamics in nerve...

Bak Protein Sets Stressed Cells on Suicide Path

...ly double whammy, Bak helps chop the finger-like filament shape of the cell's powerhouse, or mitochondrion, into vulnerable little spheres. Another protein Bax then pokes countless holes in those spheres, spilling their pro-death contents into the cell. "We found out Bak has a distinct function in regul...

filament at Medicine Products

Centralis Direct®

...; exterior, this special optical design eliminates filament reflection common to other lower profile fundus lenses. Available in Volk's exclusive ANF+ (Advanced No Fluid) contact design for methylcellulose free use....

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Fetal

...a proprietary mesh-like fabric of polyester multi filament yarn) used to cover and support the heart walls to prevent further enlargement and ... Full article >>> When internal fetal monitors are placed in an expectant mother, the chances of later developing endometriosis are increased t...

Fetal

...a proprietary mesh-like fabric of polyester multi filament yarn) used to cover and support the heart walls to prevent further enlargement and ... Full article >>> When internal fetal monitors are placed in an expectant mother, the chances of later developing endometriosis are increased t...