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Topic: Endomembrane system

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	Endomembrane System
		The endomembrane system is a collection of membranous structures involved in transport within the cell.
		The main components of the endomembrane system are the endoplasmic reticulum, Golgi bodies, vesicles, cell membrane and nuclear envelope.
		The endomembrane system is the transportation system of the cell.
	www.winterwren.com /apbio/cellorganelles/ems.html (162 words)

	Encyclopedia topic: Endomembrane system (Site not responding. Last check: 2007-09-19)
		Prokaryote (A unicellular organism having cells lacking membrane-bound nuclei; bacteria are the prime example but also included are blue-green algae and actinomycetes and mycoplasma) s do not have an endomembrane system and thus lack most organelles.
		The plasma membrane (A thin membrane around the cytoplasm of a cell; controls passage of substances in and out of the cell) is a lipid bilayer membrane that separates the cell from its environment and regulates the transport of molecules and signals into and out of the cell.
		Lysosome (An organelle found in the cytoplasm of most cells (especially in leukocytes and liver and kidney cells)) s are the "digestive" units of the cell.
	www.absoluteastronomy.com /encyclopedia/e/en/endomembrane_system.htm (311 words)

	Endomembrane System
		These vessels are together refered to as the endomembrane system, and all of the just described components communicate with each other and with the plasma membrane and nuclear membrane via the formation, release, and then merging of membrane bound vesicles.
		By all rights this lecture on the above described endomembrane system deserves to be considered as simply an extension of the previous lecture on eucaryotic cellular anatomy, since the endomembrane system is no less critical to making a eucaryotic cell what it is than are any of the other structures described in that previous lecture.
		Three categorically different protein locations in and out of the endomembrane system are each synthesized by a ribosome starting on the outside of the rough ER and are then extruded into (or at least toward) the lumen of the rough ER.
	www.mansfield.ohio-state.edu /~sabedon/biol1088.htm (1400 words)

	The Specificity of Vesicle Trafficking: Coat Proteins and SNAREs -- Sanderfoot and Raikhel 11 (4): 629 -- THE PLANT CELL
		The endomembrane system consists of seven major compartments: the endoplasmic reticulum (ER), the Golgi complex, the trans-Golgi network (TGN), the vacuole (or lysosome in mammals), the plasma membrane (PM), the prevacuolar compartment (PVC), and the endosome.
		The early endomembrane system consists of the ER and the stacks of the Golgi complex.
		The late endomembrane system consists of the TGN, the vacuole, the plasma membrane (PM), the PVC, and the endosome.
	www.plantcell.org /cgi/content/full/11/4/629 (7952 words)

	U of M: Department of Plant Biology: Faculty: Anton Sanderfoot
		The majority of the cargo (i.e.: proteins, lipids, carbohydrates, etc.) that is exchanged between the different compartments of the secretory system occurs using transport vesicles that bud from a donor organelle, traverse the cytoplasm and then fuse with a target membrane.
		The cross-roads of the secretory system where cargo from as many as five different pathways converge on a common set of organelles, yet are sorted to their destination without mixing.
		It is clear that some aspects of the plant endomembrane system will be conserved among other eukaryotes, however other factors are not conserved and by studying these novel proteins using genetic, biochemical and molecular methods we will help to illuminate the nature of the uniqueness of the plant system.
	www.cbs.umn.edu /plantbio/faculty/SanderfootAnton (545 words)

	CEPCEB - Center for Plant Cell Biology at UC Riverside
		For plant system biology to succeed, we must adopt modeling and simulation tools that are used by engineers and actively utilize computational biology and mathematical methods for modeling complex biological systems and generating hypotheses.
		The endomembrane system is also essential for various aspects of plant development and signal transduction (reviewed in Surpin and Raikhel, 2004) [Full Text PDF].
		One of the interesting observations of these studies is that the endomembrane systems of the shoots and roots is uncoupled, a factor that will have to be taken into account when designing future studies (Avila et al., 2003 [Full Text PDF] ; Surpin and Raikhel, 2004) [Full Text PDF ].
	cepceb.ucr.edu /members/raikhel.htm (4441 words)

	[No title]
		Undetermined endomembrane system ; 12043_at At1g62590 putative membrane-associated salt-inducible protein (AL021637); similar to EST gbAA728420; similar to unknown protein GB Undefined mitochondrion ; 12044_at 12045_at At1g53990 "lipase, putative; similar to lipase GI:1145627 from (Arabidopsis thaliana) " Secreted Proteins glycerol biosynthesis ;endomembrane system ;enzyme ; 12046_at At1g30690 "expressed protein; Contains the PF00650 CRAL/TRIO phosphatidyl-inositol-transfer protein domain.
		Secreted Proteins endomembrane system ; 12186_at At2g46100 unknown protein Undetermined chloroplast ; 12187_at At1g10410 unknown protein; similar to ESTs gbN96021 and gbN96863; supported by cDNA: gi_20453051 chloroplast ;hydrogen-transporting two-sector ATPase ;ATP binding ;hydrogen transport ; 12188_at At2g28870 expressed protein; supported by full-length cDNA: Ceres:22382.
		Secreted Proteins endomembrane system ; 12793_at At1g78670 "gamma glutamyl hydrolase, putative; similar to gamma glutamyl hydrolase GI:1680711 from (Glycine max);supported by full-" endomembrane system ; 12794_at At2g37270 40S ribosomal protein S5; identical to GP:3043428;supported by full-length cDNA: Ceres:8397.
	www.public.iastate.edu /~kyung/RA/Data/arab_help.txt (2226 words)

	INTERSCIENTIA: ORGANELLES FIG.1 (Site not responding. Last check: 2007-09-19)
		Subcellular compartments that constitute the cellular endomembrane system.
		The major organelles of the endomembrane system are: the endoplasmic reticulum (ER), with its rough (RER) and smooth (SER) components; the Golgi apparatus (GA); endosomes (endo); lysosomes (lys); secretory vesicles (sec ves) and granules (SG) and the plasma membrane (PM).
		To maintain the characteristic structure and composition of all the organelles of the endomembrane system that communicate with each other by a forward vesicular flow, a retrograde vesicular flow must also take place.
	www.uottawa.ca /publications/interscientia/inter.1/fig1org.html (433 words)

	Lippincott-Schwartz Lab (Site not responding. Last check: 2007-09-19)
		The endomembrane system of eukaryotic cells is responsible for delivery of newly synthesized protein and lipid to the outside of the cell; for uptake, processing and degradation of extracellular molecules; and for the regeneration and functioning of intracellular organelles.
		This activity is essential for the maintenance and functioning of the endomembrane system.
		Using a variety of GFP-based fluorescent imaging techniques, including dual-color time-lapse imaging, photobleaching and photoactivation, we have sought to understand the basis for protein targeting and retention within organelles; the processes by which transport intermediates form and move between compartments; and, the principles underlying organelle breakdown, reassembly and maintenance.
	dir2.nichd.nih.gov /nichd/cbmb/sob/lab_interests.html (500 words)

	Translocation machinery for synthesis of integral membrane and secretory proteins in dendritic spines - Nature ...
		Here we report that protein translocation sites (translocons), ribosomes and lumenal ER proteins (involved in protein assembly and folding) were associated with the neuronal endomembrane system of dendrites and dendritic spines, thus allowing for the involvement of locally synthesized integral membrane and secretory proteins in synapse-specific modification.
		Additionally, immunogold particles were apposed to the surface of the endomembrane system in both proximal and distal dendrites (Fig.
		to the endomembrane of dendritic spines and dendrites.
	www.nature.com /cgi-taf/DynaPage.taf?file=/neuro/journal/v3/n4/full/nn0400_311.html (1366 words)

	Summary 5.3 (Site not responding. Last check: 2007-09-19)
		The endomembrane system is an extensive system of membranes and membrane-bound compartments.
		The two principal organelles of the endomembrane system are the endoplasmic reticulum (ER) and the Golgi apparatus.
		When products leave the endomembrane system, they are sorted according to molecular tags and then enclosed in vesicles.
	wps.prenhall.com /esm_freeman_biosci_1/0,6452,498520-,00.html (187 words)

	[No title]
		The endoplasmic reticulum, ER, is part of the cell’s cast endomembrane system.
		Proteins produced by the ribosomes are transported to regions of the cell where they are needed, or they are transported to the Golgi body for export from the cell.
		Members of the endomembrane system pass materials to each other, either through direct contact or through the use of vesicles.
	www.angelfire.com /ga/diatoms/anatomy.html (1238 words)

	CMR chapter 2 (Site not responding. Last check: 2007-09-19)
		endomembrane system: the system of membranes within a cell that include the nuclear envelope, endoplasmic reticulum, Golgi apparatus, lysosomes, vacuoles, and the plasma membrane)
		Some are in the form of flattened sacs, some are rounded sacs, and some are tube-shaped.
		The major function of the endomembrane system is to divide the cell into compartments.
	www.nmc.edu /~ftank/109s05/ReadingNotesCh4.htm (2137 words)

	[No title]
		Many of the membranes of the eukaryotic cell are part of this system.
		The endomembrane system includes: the nuclear envelope, endoplasmic reticulum, Golgi apparatus, lysosomes, vacuoles and the plasma membrane.
		Although the peroxisomes are enclosed in membranes they are not considered part of the endomembrane system.
	www.olemiss.edu /courses/bisc102/organelles.html (625 words)

	Domain Eukarya
		They comprise the endomembrane system, and are highly dependent on each other for the partitioning of the cell for metabolic activity.
		The organelles of the endomembrane system include the nucleus (surrounded by a double membrane), rough and smooth endoplasmic reticulum, Golgi apparatus, lysosomes, peroxisomes, vacuoles, and transport vesicles that move between the components.
		The eukaryotic endomembrane system arose by a process known as membrane infolding.
	www.sidwell.edu /us/science/vlb5/Labs/Classification_Lab/Eukarya (535 words)

	Cell Structure and Function: The Endomembrane System in Eukaryotic Cells
		Cell Structure and Function: The Endomembrane System in Eukaryotic Cells
		All eukaryotic cells have within them a functionally interrelated membrane system, the endomembrane system consisting of the nuclear envelope, ER and Golgi apparatus, vesicles and other organelles derived from them, and the plasma membrane.
		Many materials are moved around the cell by the endomembrane system, including some proteins.
	www.phschool.com /science/biology_place/biocoach/cells/endo.html (74 words)

	endomembrane system (Site not responding. Last check: 2007-09-19)
		The endomembrane system is composed of a number of inter-related membrane sacs within the cytoplasm of the cell.
		Proteins that are synthesized on the rough endoplasmic reticulum are those that will be secreted, found in lysosomes, found in peroxisomes, found in microbodies or will become integral membrane proteins.
		To learn more about the different components of the endomembrane system click on the names above.
	academic.brooklyn.cuny.edu /biology/bio4fv/page/endomem.htm (100 words)

	LECTURE 13
		The endomembrane system in the cell includes the nuclear enve lope, the endoplasmic reticulum, the Golgi apparatus, the lysosomes, the plasma membrane, and other assorted vacuoles.
		Although parts of the endomembrane system are physically conn ected, they need not be to be part of this system.
		Most of the proteins synthesized in the ER are sent to anothe r member of the endomembrane system for modification: the Golgi apparatus.
	www.ucc.uconn.edu /~giardina/LECTUR13.html (1982 words)

	Chapter 7
		cells are open systems that exchange materials and energy with their environment.
		Membranes of the endomembrane system vary in structure and function, and the membranes themselves are dynamic
		Components of the endomembrane system are related through direct contact or through vesicles.
	www.niles-hs.k12.il.us /jacnau/chpt7.html (4495 words)

	Eukaryotic Cell Structure: Overview of Internal Membrane-Bound Organelles (Site not responding. Last check: 2007-09-19)
		Eukaryotic cells possess what is referred to as an internal membrane system or endomembrane system that compartmentalizes the cell for various different but interrelated cellular functions.
		There are other membrane-bound organelles, such as mitochondria and chloroplasts that are self contained and are not generally thought of as part of the endomembrane system.
		We will now look at the various structures that make up the endomembrane system, including the nucleus, the endoplasmic reticulum, and the Golgi complex.
	www.cat.cc.md.us /courses/bio141/lecguide/unit2/eustruct/ems.html (237 words)

	A Tour of the Cell (Site not responding. Last check: 2007-09-19)
		A major component of the membrane-bound organelles found in eukaryotic cells are members of what is known as the endomembrane system plus the various endosymbionts (e.g., mitochondria and chloroplasts)
		Members of the endomembrane system may be either physically continuous with other members or not continuous but still communicating with other members of the endomembrane system via the release and fusion of
		Bound ribosomes are bound to the cytoplasm side of certain members of the endomembrane system
	www.mansfield.ohio-state.edu /~sabedon/campbl07.htm (2207 words)

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