
	Where results make sense

Topic: Plasmalemma

Related Topics

Cell potential

Contractile vacuole

Caveolae

Protoplast

Apoplast

New Zealand elections

Chelation

Tonoplast

	Pollen development of Rondeletia odorata (Rubiaceae) -- El-Ghazaly et al. 88 (1): 14 -- American Journal of Botany
		Detail of the plasmalemma surface coat in a slightly late tetrad stage; note radial, darker stained rods (pro-columellae, arrows) and protectum elements in distal part of surface coat.
		The plasmalemma surface coating is obvious between the pro-columellae.
		Dictyosome vesicles are abundant in hyperactive cytoplasm and fusing with undulating plasmalemma (arrows).
	www.amjbot.org /cgi/content/full/88/1/14 (5542 words)

	Evolution of skeletal type e-c coupling: a novel means of controlling calcium delivery -- Di Biase and ...
		In this muscle, peripheral couplings between SR and plasmalemma are small, have few feet (B, arrows), and are not frequent.
		The cytoplasmic leaflet of plasmalemma in hagfish myotomes shows a flat membrane rich in particles and in caveolae; its neck openings appear as small circles (D).
		The domains are elongated in the longitudinal direction and correspond in position and shape to the areas of junctions between the fingerlike jSR and the plasmalemma (compare with A).
	www.jcb.org /cgi/content/full/171/4/695 (4996 words)

	convtubules12 (Site not responding. Last check: 2007-10-09)
		The striped appearance and acidophilia of these epithelial cells is largely due to infoldings of the basal plasmalemma and mitochondria.
		ATP-dependant Na pumps on the basal plasmalemma pump sodium into the interstitia to be taken up by the peritubular capillaries.
		The microvilli and basal plasmalemma infoldings increases the surface area on both sides of the cell for this work.
	www.vetmed.wsu.edu /VAn308/convtubules12.htm (184 words)

	Bioline International Official Site (site up-dated regularly) (Site not responding. Last check: 2007-10-09)
		The upper membrane of the nucleus is almost associated with the plasmalemma of the egg, and the bottom of the nucleus is closed to the plasmalemma of the egg cell (Fig.13).
		A few vesicles containing lamellar osmiophilic material distributed along the plasmalemma, both of them seem to be broken at a point on the opposite side (Fig.17).
		In addition, there are many high osmiophilic materials which were probably excreted from vesicles, large or small, round or club-shaped inside the plasmalemma and amorphous outside the plasmalemma (Figs.14, 15) adding the egg membrane, in which the widest reaches 0.13 µm (Fig.17).
	www.bioline.org.br /request?as03012 (3562 words)

	Differentiated microdomains of the luminal plasmalemma of murine muscle capillaries: segmental variations in young and ... (Site not responding. Last check: 2007-10-09)
		The pattern of labeling was analyzed by electron microscopy and assessed quantitatively by morphometry in arterioles, capillaries, and venules identified in bipolar microvascular fields in the diaphragm.
		The results showed that the plasmalemma proper was heavily but discontinuously labeled by all cationized ferritins (CF) used, the labeling being less extensive on the venular endothelium.
		Neuraminidase decreased the extent and density of labeling, especially on the plasmalemma proper of the venular endothelium; this decrease was particularly pronounced in old animals.
	www.arclab.org /medlineupdates/abstract_3921552.html (263 words)

	pH, abscisic acid and the integration of metabolism in plants under stressed and non-stressed conditions. II. ... (Site not responding. Last check: 2007-10-09)
		It is further assumed that three protons required to suppress the ionization of one of the carboxyl groups of malate are provided by the export of carbonic acid from the mitochondrial oxidation of pyruvate derived from imported malate.
		It is further assumed that the three protons required to suppress the ionization of one of the carboxyl groups of malate are provided by the export of carbonic acid from the mitochondrial oxidation of pyruvate.
		electrochemical gradients at the plasmalemma and the tonoplast
	jxb.oxfordjournals.org /cgi/content/full/53/367/151 (7254 words)

	Lecture 22
		Phospholipase C (PLC) is also bound to the plasmalemma where it hydrolyses inositol containing phospholipids to yield the water soluble inositol triphosphate (IP3) and diacylglycerol (DAG), which is hydrophobic and remains within the membrane.
		PIP3 is a phospholipid within the plasmalemma: do not confuse it with inositol triphosphate (IP3) which is a water soluble second messenger.
		In the previous lecture we considered linear 5' AMP which is in equilibrium with ATP and ADP via the myokinase reaction in the mitochondrial intermembrane space, and which activates the important regulatory enzyme AMPK.
	www.bmb.leeds.ac.uk /teaching/icu3/lecture/22 (1595 words)

	[No title]
		- Transport of substances is necessary to maintain a relatively constant internal environmentÑhomeostasis - Cells have membranes or plasmalemma that serve as barriers between the ECF (extracellular fluid = fluid outside the cells & ICF (intracellular fluid = fluid inside the cells).
		Phagocytosis: ingestion of particulate matter by fusing the plasmalemma to it, surrounding it with the plasmalemma, & enclosing it into a vesicle that is brought into the cytoplasm.
		Plasmalemma & cytoplasm extrude to engulf a particular particle.
	www.angelo.edu /faculty/rwilke/Bio1410/membrane.doc (1932 words)

	[No title] (Site not responding. Last check: 2007-10-09)
		A. The plasma membrane (plasmalemma) The outer cell membrane, also called the plasma membrane and plasmalemma, appears as a thin, three-layered (trilaminar) sheet in electron-microscopy pictures.
		The proteins in the plasmalemma form pumps and channels that regulate which big molecules and ions enter and leave the cell.
		Thus, the general name for all these bilayered membranes, including the plasmalemma and the internal membranes, is the unit membrane.
	www.wsu.edu /~jmallatt/biol315/Lecture2Jan11,2006.doc (2423 words)

	Tetrad pollen formation in Annona (Annonaceae): proexine formation andbinding mechanism -- Tsou and Fu 89 (5): 734 -- ...
		The distal plasmalemma is undulate, and small invaginations and vesicles (*) are common.
		The prosexine is developed at the proximal side and diminishes abruptly toward the distal side (arrowhead) as shown in Fig.
		The plasmalemma is undulate, with many vesicles along it.
	www.amjbot.org /cgi/content/full/89/5/734 (5001 words)

	The Pfenninger Laboratory - Research Interests
		According to most current models, axonal growth is regulated by growth factors that enhance, via changes in gene expression, the synthesis of axonal components; such newly synthesized components are transported to the growth cone for distal assembly of the elongating axon.
		Precursor membrane of the plasmalemma indeed can be found in the growth cone.
		Using cell-free assays and live-cell microscopy of growth cones in culture, we have established that insertion of new membrane into growth cone plasmalemma is triggered by calcium influx and stimulated by insulin-like growth factor 1 (IGF-1), but not by the "classical" neurotrophin, BDNF.
	www.uchsc.edu /cdb/faculty/Pfenninger/axonal_growth.html (409 words)

	Apicomplexa -- Encylopedic Reference of Parasitology
		is probably also implicated, both molecules being found between the plasmalemma and the inner complex of zoites.
		The MIC proteins are carried along the inner complex by the motor and interact with the substrate, or associate with a GPI-anchored protein that interacts with the substrate, resulting in gliding motility (after Dubremetz et al, Int J Parasitol, 28, 1009-1011, 1998, modified).
		A second observation was that the moving junction had a peculiar freeze fracture structure as a rhomboedric network of “particles” in the erythrocytic side, which indicated that the junction was more than a close apposition of membranes but that the internal structure of the host
	parasitology.informatik.uni-wuerzburg.de /login/n/h/0097.html (3993 words)

	A & P 240: Overview of the Human Nervous System (Generalized Outlines for Ch (Site not responding. Last check: 2007-10-09)
		Plasmalemma contain membrane proteins that contain channels; primarily channels for ions.
		The plasmalemma of a nonconducting (resting) neuron is positive outside and negative inside, owing to
		permeability of the plasmalemma to Na+ and K+; and operation of the sodium-potassium pump.
	www.pierce.ctc.edu /mbalogh/bio240/Ch13.htm (1371 words)

	Compartmental Analysis of Herbicide Efflux in Susceptible and Difenzoquat
		Plant cell cultures are thought to qualitatively represent intact plants when investigating herbicide metabolism patterns (4), and their use avoids the confounding factors of herbicide translocation and presence in apoplastic spaces in intact plants (5).
		The authors concluded that paraquat was able to move bidirectionally across the plasmalemma and tonoplast, although uptake into the cytoplasm and vacuole was substantially slower than for other herbicides (6-9).
		Altered paraquat binding could be due to an increased number of binding sites in R cell walls or a mutation that reduces herbicide affinity of a putative transport protein on the plasmalemma, thus increasing the likelihood of paraquat’s interaction with and subsequent binding to cell wall material.
	weeds.montana.edu /weedphys/efflux.htm (4311 words)

	Set 4 Vessel Member Differentiation
		Large arrows indicate the probable limits of the middle lamella, triangles, connections between the microtubules and plasmalemma.
		In the lower, older cell, the microtubules (arrowheads) are concentrated near the young helical thickenings and absent along the primary wall (pw).
		Many microtubules are sectioned through their connection with the plasmalemma (triangles).
	images.botany.org /set-04 (702 words)

	The nature of the phagosomal membrane: endoplasmic reticulum versus plasmalemma -- Touret et al. 77 (6): 878 -- Journal ...
		Upon engagement of phagocytic receptors [e.g., Fc receptors (Fc Rs)], the plasmalemma surrounds a target particle by extension of pseudopods.
		In the conventional model (left panel), the phagocytic vacuole is formed by the fusion of pseudopods at their tips and is composed largely of plasmalemmal constituents with a varying contribution of endosomes, perhaps depending on the particle size.
		assessment of the contribution of the plasmalemma and ER membrane
	www.jleukbio.org /cgi/content/full/77/6/878 (5030 words)

	skoool.ie :: homework zone
		Both animal and plant cells have an encircling cell membrane (plasmalemma), cytoplasm, nucleus with nucleoplasm, chromatin or chromosomes and nucleoli.
		Protoplasm is the term used for the living contents of cell bounded by and including the plasmalemma but it does not include the large vacuole of plant cells.
		Cell Membrane (plasmalemma): Fluid-mosaic structure involving a bi-lipid layer with proteins, semi-permeable, keeps cell contents together, controls entry and exit of materials, active transport of specific materials across it.
	www.skoool.ie /skoool/homeworkzone.asp?id=261 (600 words)

	Medical Cytology Module
		A The cell is the unit of life able to direct the elaborate chemistry that keeps it alive, and coordinating its work with that of the trillions of other cells comprising a human being.
		563), or particular regions of the plasmalemma; b) that vesicles leave the Golgi complex headed for the correct part of the cell; and c) that vesicles travel in the right direction at the proper speed along the axon or dendrites.
		For wires and vacuum tubing to pass from the engine compartment of your car to the dash in the passenger compartment, the metal firewall has holes in which are inserted plastic or rubber plugs, each with a large central hole.
	wberesford.hsc.wvu.edu /cytol.htm (5118 words)

	Set 14 Communication Channels Between Cells and Their Origin in Higher Plants
		The cytoplasm of contiguous cells is continuos through the canal and surrounds a conspicuous core.
		The vesicles are delimited by a membrane that becomes the plasmalemma after the vesicles fuse.
		Callose nearly fused at middle lamella, plasmalemma and ER cisternae cover the callose, plasmodesma extends from ER to ER through future pore.
	images.botany.org /set-14 (1225 words)

	Malaria (Site not responding. Last check: 2007-10-09)
		No further changes affect the female macrogametocyte until fertilisation where the plasmalemmas of male and female gametes fuse and the nucleus of the microgamete enters the female cytoplasm (1).
		After fertilisation, the zygote is a motionless globular cell, but after 18 to 24 hours it becomes elongated and motile, containing micronemes and a pellicle.
		They are more antigenic, and bear circumsporozoite polypeptide on their plasmalemma.
	www-micro.msb.le.ac.uk /224/Bradley/Biology.html (887 words)

	PMID: 2859282 (Site not responding. Last check: 2007-10-09)
		The proton pumps of the plasmalemma and the tonoplast of higher plants.
		Studies on intact cells, membrane vesicles, and reconstituted proteoliposomes have demonstrated in higher plants the existence of an ATP-driven electrogenic proton pump operating at the plasmalemma.
		The characteristics of both these ATP-driven pumps closely correspond to those of the plasmalemma and tonoplast proton pumps of Neurospora and yeasts.
	lethargy.swmed.edu /cgi-bin/etblast/abstract_local?pmid=2859282 (86 words)

	Signalling in Dinoflagellates-Burkholder & Springer
		A second, smaller class of signals consists of molecules that are sufficiently small and hydrophobic to diffuse across the plasmalemma.
		Mechanisms for transduction of signals across the plasmalemma involve two general groups of receptors which differ in the nature of the intracellular signal that they generate when the extracellular signal molecule binds to them.
		Signal transduction involves activation of a membrane-bound protein (G protein subunit), which is released to diffuse in the plane of the plasmalemma, initiating a cascade of other effects.
	www.spa.net /~spring/marine.htm (6271 words)

	BioSci 1C Background Filler (Site not responding. Last check: 2007-10-09)
		The single membrane of the vesicle then fuses with the single membrane of the tonoplast or plasmalemma and the contents of the vesicle are passed into the vacuole or to the exterior of the plasmalemma.
		The DNA codes for some of the proteins that function in the chloroplasts and mitochondria; however, most of the proteins that do the work in these organelles is produced on ribosomes outside, in the cytoplasm.
		If, when a molecule moves from one cell to the next it must pass through (out) of the plasmalemma of the cell it is leaving, across the cell wall space, and then through (in) the plasmalemma of the cell it is entering, it is said to have taken an apoplastic path.
	www.dbs.ucdavis.edu /courses/w01/bis001C-02/l1.htm (4612 words)

	Plasmodesmata-plant (Site not responding. Last check: 2007-10-09)
		The cytoplasmic sleeve is the gap between the plasmalemma and the demotubule.
		The semi-cylinder of the outer layer is the plasmalemma.
		The cylinder within the plasmalemma is the desmotubule.
	sun.menloschool.org /~cweaver/cells/c/plasmodesmata (232 words)

	Steve's place - Prokaryotes And Eukaryotes
		The first are the actin microfilaments, which, with the motor protein myosin, form the muscles of the cytoskeleton (and in sarcosomes, form actual muscles too).
		The actin cytoskeleton forms a cortex beneath the plasmalemma of most eukaryotic cells, which is involved in changes to the external shape of the cell (such as the formation of pseudopodia in amoebae).The second fibre type are intermediate filaments, composed of spectrin, keratin, vimentin, nuclear lamins and other proteins.
		The outer cell membrane or plasmalemma, controls what gets in and out of the cell by the use of pores, symports, antiports and pumps.
	www.steve.gb.com /science/prokaryotes_and_eukaryotes.html (3288 words)

	Sorghum Anthracnose:- Light Microscopy of The Infection Process
		Note the infection peg has a very small diameter where it passes through the cell wall and there is very little, if any, cell wall dissolution.
		In susceptible cultivars the host plasmalemma and cell cytoplasm (C) is invaginated around the infection vesicle.
		Note that the cytoplasm of the cell (C) is still mainly intact although it is starting to disintegrate and the plasmalemma(P) is starting to fragment.
	www.sorghumanthracnose.org /emcycle.html (568 words)

	Dr
		Walker NA, Beilby MJ and Smith FA, 1979, Amine uniport at the plasmalemma of charophyte cells: I. Current-voltage curves, saturation kinetics, and effects of unstirred layers.
		Walker NA, Smith FA and Beilby MJ, 1979, Amine uniport at the plasmalemma of charophyte cells: II.
		Beilby MJ and Bisson MA, 1992, The Chara plasmalemma at high pH: p.d..-dependence of the conductance at rest and during excitation.
	www.phys.unsw.edu.au /~mjb/CV2004.htm (3037 words)

Try your search on: Qwika (all wikis)