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Topic: Rough endoplasmic reticulum

Related Topics

Smooth endoplasmic reticulum

Golgi apparatus

Biological cell

Plasma membrane

Vesicle

Ribosome

Lysosome

Mitochondrion

Cell nucleus

Cell wall

Nucleolus

Vacuole

Cytoskeleton

Organelle

Tonoplast

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	Endoplasmic reticulum - Open Encyclopedia (Site not responding. Last check: 2007-10-22)
		The endoplasmic reticulum or ER (endoplasmic means "within the cytoplasm", reticulum means "little net") is an organelle found in all eukaryotic cells.
		The ER is the site of the translation and folding of and transport of proteins that are to become part of the cell membrane (e.g., transmembrane receptors and other integral membrane proteins) as well as proteins that are to be secreted or "exocytosed" from the cell (e.g., digestive enzymes).
		The endoplasmic reticulum serves many general functions, including the facilitation of protein folding, and the transport of proteins.
	open-encyclopedia.com /Endoplasmic_reticulum (571 words)

	Endoplasmic reticulum -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-22)
		The endoplasmic reticulum or ER (endoplasmic means "within the (The protoplasm of a cell excluding the nucleus) cytoplasm", reticulum means "little net") is an (A specialized part of a cell; analogous to an organ) organelle found in all (additional info and facts about eukaryotic cells) eukaryotic cells.
		The ribosomes on the surface of the rough ER insert the freshly produced proteins directly into the ER, which processes them and then passes them on to the (A net-like structure in the cytoplasm of animal cells (especially in those cells that produce secretions)) Golgi apparatus (Fig.
		The endoplasmic reticulum found in (One of the contractile organs of the body) muscle fibers is called sarcoplasmic reticulum.
	www.absoluteastronomy.com /encyclopedia/e/en/endoplasmic_reticulum.htm (713 words)

	Organelles of the Eukaryotic Cell
		The smooth endoplasmic reticulum is smooth because it lacks ribosomes; regions of the rough endoplasmic reticulum are studded with ribosomes.
		Ribosomes bound to the rough ER synthesize certain membrane and organelle proteins and virtually all proteins to be secreted from the cell, as described in Chapter 17.
		In many cells, the outer nuclear membrane is continuous with the rough endoplasmic reticulum, and the space between the inner and outer nuclear membranes is continuous with the lumen of the rough endoplasmic reticulum (see Figure 5-31).
	www.ncbi.nlm.nih.gov /books/bv.fcgi?db=Books&rid=mcb.section.1182 (3510 words)

	Smooth Endoplasmic Reticulum (Site not responding. Last check: 2007-10-22)
		Endoplasmic reticulum (ER) is a membranous labyrinth so extensive that it accounts for more than half the total membrane in many eukaryotic cells.
		It was first noticed in the cytoplasm of chick embryo cells.The word endoplasmic means "within" the cytoplasm, and the word reticulum is derived from a word meaning "network." The ER consists of a network of membranous tubules and sacs called cisternae.
		The RER is involved in the synthesis of proteins.
	www.geocities.com /toueak/endo.html (419 words)

	Internal Structure of a Neuron - Endoplasmic Reticulum (Site not responding. Last check: 2007-10-22)
		Rough endoplasmic reticulum is covered with ribosomes, the site of protein synthesis, whereas smooth endoplasmic reticulum (without ribosomes) is the site for lipid synthesis.
		The membrane of rough endoplasmic reticulum (rER) is continuous with the nuclear membrane, a relationship which likely aids in the transport of ribosomes from the nucleolus within the nucleus to the membrane of the endoplasmic reticulum where they produce proteins (Arms and Camp, 1995).
		Smooth endoplasmic reticulum (sER) is merely a continuation of rER with the absence of ribosomes.
	psych.athabascau.ca /html/Psych402/Biotutorials/1/endoplasmic.shtml (226 words)

	endoplasmic reticulum -- Encyclopædia Britannica
		The endoplasmic reticulum (ER), a network of membranous tubes and sacs, twists through the cytoplasm from the cell membrane to the membrane surrounding the nucleus.
		Located along portions of the endoplasmic reticulum are ribosomes, tiny bodies made of ribonucleic acid (RNA) that play a vital role in the manufacture of proteins.
		in astronomy, a constellation of the Southern Hemisphere that is surrounded by the constellations Eridanus, Hydrus, Reticulum, Dorado, and Caelum.
	www.britannica.com /eb/article-9032619?tocId=9032619 (657 words)

	Endoplasmic reticulum - Endoplasmic reticulum - Enpsychlopedia (Site not responding. Last check: 2007-10-22)
		Dilatation of endoplasmic reticulum Dilatation of endoplasmic reticulum Dilatation of rough endoplasmic reticulum - With legends Lysosomes in a hepatocyte
		Spreading throughout the cytoplasm is the endoplasmic reticulum.
		The endoplasmic reticulum (ER) is a continuous network of parallel Smooth endoplasmic reticulum is present in relatively small quantities in most cells.
	agesites.com /agss/endoplasmic-reticulum.html (199 words)

	Endoplasmic reticulum - Wikipedia, the free encyclopedia
		Prokaryotic organisms do not have organelles and thus do not have an ER and other integral membrane proteins) as well as proteins that are to be secreted or "exocytosed" from the cell (e.g.
		The Smooth ER does not have ribosomes attached to it as the Rough ER does.
		Correct folding of newly made proteins is made possible by several ER proteins including: PDI, Hsp70 family, calnexin, calreticulin, and the peptidylpropyl isomerase family.
	en.wikipedia.org /wiki/Endoplasmic_reticulum (331 words)

	The rough endoplasmic reticulum (from cell) -- Encyclopædia Britannica
		Endoplasmic reticulum has two distinct regions: the rough ER (RER; so-called because of the...
		Reticulum is bounded on the south by Hydrus, on the east by Dorado, and on the west by Horologium.
		The five rough sharks are the prickly dogfish shark, Oxynotus bruniensis; the Caribbean rough shark, O. caribbaeus; the...
	www.britannica.com /eb/article-37394?tocId=37394 (850 words)

	Transport of free and N-linked oligomannoside species across the rough endoplasmic reticulum membranes -- Cacan and ...
		Pilon,M. Schekman,R. and Römisch,K. (1997) Sec61p mediates export of a misfolded secretory protein from the endoplasmic reticulum to the cytosol for degradation.
		Suzuki,T. and Lennarz,W. (2000) In yeast the export of small glycopeptides from the endoplasmic reticulum into the cytosol is not affected by the structure of their oligosaccharide chains.
		Suzuki,T., Park,H., Kitajima,K. and Lennarz,W.J. (1998) Peptides glycosylated in the endoplasmic reticulum of yeast are subsequently deglycosylated by a soluble peptide: N-glycanase activity.
	glycob.oxfordjournals.org /cgi/content/full/10/7/645 (2560 words)

	Ribosomes on the Rough endoplasmic reticulum
		This is to allow the interaction of the signal sequence with a complex on the rough endoplasmic reticulum.
		Protein is threaded through the translocating channel (open area in rer membrane) until a hydrophobic stop sequence is reached.
		It shows the insertion of a double pass transmembrane protein with the loop inside the rough endoplasmic reticulum.
	cellbio.utmb.edu /cellbio/rer2.htm (1158 words)

	Endoplasmic Reticulum
		Endoplasmic reticulum is a network of tubules, vesicles and sacs that are interconnected.
		Rough endoplasmic reticulum bears the ribosomes during protein synthesis.
		Rough endoplasmic reticulum forms a branched reticulum that expands as the cell becomes more active in protein synthesis.
	cellbio.utmb.edu /cellbio/rer1.htm (837 words)

	Endomembrane System
		The rough ER is also the site of the related work of synthesizing of some proteins destined to be located in membrane-bound organelles, or export to a location external to the cytoplasmic membrane.
		Membrane proteins are not completely extruded through the rough ER membrane (and thus retain a portion within the membrane--a membrane protein is born).
		A membrane protein in the endoplasmic reticulum is shaped like an arrow with its head present in the lumen of the endoplasmic reticulum (i.e., points toward the inside).
	www.mansfield.ohio-state.edu /~sabedon/biol1088.htm (1400 words)

	Signal Recognition Particle-dependent Targeting of Ribosomes to the Rough Endoplasmic Reticulum in the Absence and ...
		of the Sec61 oligomers in rough microsomes are occluded by endogenous
		of ribosomes to the rough endoplasmic reticulum is mediated by
		reticulum translocation intermediates are adjacent to a non-glycosylated
	www.molbiolcell.org /cgi/content/full/9/1/117 (6918 words)

	Endoplasmic Reticulum (Site not responding. Last check: 2007-10-22)
		The endoplasmic reticulum is a network of folded membranes that form channels.
		The membranes of the ER are concentrated in the inner region of the cell, the endoplasmic region.
		The RER is dotted with ribosomes that form granules on the surface to give it a "rough" appearance.
	www.fi.edu /qa97/biology/cells/cell5.html (353 words)

	Cell Secretion
		The vesicles from the rough endoplasmic reticulum fuse with one end, adding their proteins to the first flattened vesicle.
		The key difference is that the protein threads into the membrane as it is being synthesized in the rough endoplasmic reticulum.
		Notice how the membrane of the endoplasmic reticulum moves through the Golgi apparatus and to the plasma membrane during the secretion process.
	courses.washington.edu /physeng/cell/secretion.htm (561 words)

	Biotech Adventures - Oklahoma State University -- Basic Cellular Information -- (Site not responding. Last check: 2007-10-22)
		The rough endoplasmic reticulum has ribosomes attached to it and the smooth endoplasmic reticulum does not have ribosomes attached to it.
		Messenger RNA is translated into proteins by the ribosomes attached to the rough endoplasmic reticulum, and these proteins go inside the rough endoplasmic reticulum to get their tag.
		From the rough endoplasmic reticulum, the vesicle floats across the cytoplasm to a structure called the Golgi apparatus.
	biotech-adventure.okstate.edu /low/basics/cell/plant (1055 words)

	rer (Site not responding. Last check: 2007-10-22)
		The RER, with the Golgi Apparatus, forms a structurally and functionally-integrated membrane system which is especially involved in the synthesis, transport and secretion of proteins, glycoproteins and polysaccharides.
		The RER has a large amount of membrane available for enzyme attachment, while the cisternae (the membrane-enclosed spaces) are available for storage and transport intra-cellularly (and perhaps inter-cellularly via plasmodesmata).
		Smooth ER is the term given to endoplasmic reticulum which has no associated ribosomes; has been suggested to be involved in lipid and sterol synthesis.
	www.lifesci.sussex.ac.uk /home/Julian_Thorpe/rer.htm (136 words)

	Endoplasmic reticulum (Site not responding. Last check: 2007-10-22)
		The endoplasmic reticulum (endoplasmic="within the cytoplasm", reticulum="little net"; short : ER) is an important organelle (a structure within the cell that is divided from the cytoplasm by a membrane) in all eukaryotic cells.
		The ER is the site of the translation, folding, the initial modifications and transport of proteins that are to become part of the cell membrane (e.g., transmembrane receptors and other integral membrane proteins) as well as proteins that are to be secreted or "exocytosed" from the cell (e.g., digestive enzymes).
		While the rough ER manufactures and transports proteins destined for membranes and secretion, the smooth ER has functions in several metabolic processes.
	www.city-search.org /en/endoplasmic-reticulum.html (545 words)

	rough and smooth endoplasmic reticulum (Site not responding. Last check: 2007-10-22)
		Thus the endoplasmic reticulum is a series of interconnected, intracytoplasmic, membrane bounded sacs.
		results from the presence of ribosomes that are bound to the cytosolic side of the endoplasmic reticulum membrane.
		The presence of ribosomes on the RER indicates that it is involved in
	academic.brooklyn.cuny.edu /biology/bio4fv/page/rougher.htm (70 words)

	Endoplasmic Reticulum (Site not responding. Last check: 2007-10-22)
		The word endoplasmic means "within" the cytoplasm, and the word reticulum is derived from a word meaning "network." The ER consists of a network of membranous tubules and sacs called cisternae.
		The rough ER appears rough because of ribosomes.
		Protein molecules move from the rough ER into the smooth ER, which then sensds them enclosed within the vesicles usually to the Golgi complex.
	www.cdli.ca /~dpower/cell/er.htm (241 words)

	Endoplasmic reticulum - Endoplasmic Reticulum (Site not responding. Last check: 2007-10-22)
		The endoplasmic reticulum (or ER) is a network of membrane used to The endoplasmic reticulum is what cells use to move things around inside them.
		The endoplasmic reticulum (ER) is a continuous membrane system but consists of various The endoplasmic reticulum Ca2+ store: a view from the lumen.
		The membranes of the endoplasmic reticulum (ER) surround an inner cavity called the lumen and enclose a series of tubes and flattened membranous areas.
	forsurfer.com /?q=endoplasmic-reticulum (186 words)

	Cytology Lecture 7
		Note: In the cartoon of rough endoplasmic reticulum below many of the ribosomes (illustrated as dark spots) are much too regularly spaced.
		RER (rough endoplasmic reticulum) occurs in cells that are actively making proteins destined for secretion outside the cell -- examples of such proteins are antibodies, digestive enzymes, and certain hormones.
		show it to be a series of compressed baglike sacs or cisternae, generally found near the nucleus, and always associated with endoplasmic reticulum.
	home.earthlink.net /~dayvdanls/lecw4cells7.html (840 words)

	MSN Encarta - Search Results - rough endoplasmic reticulum
		Endoplasmic Reticulum (ER), an extensive network of tubes that manufacture, process, and transport materials within nucleated cells.
		Attached to the nuclear membrane is an elongated membranous sac called the endoplasmic reticulum.
		From 1929 to 1948 Claude conducted biological research at Rockefeller.
	encarta.msn.com /rough+endoplasmic+reticulum.html (116 words)

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