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Topic: Protein targeting

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	Learn more about Protein in the online encyclopedia. (Site not responding. Last check: 2007-09-17)
		Proteins (meaning "first thing"; discovered by Berzelius, in 1838) are one of the primary constituents of living things;as such, these are one of the primary biochemical molecules-classes.
		Proteins, composed from amino acid strings, are a form of enzyme; they are "cellular machines".
		The issue of how proteins arrive at their native state is an important area of biochemical study, called the study of protein folding.
	www.onlineencyclopedia.org /p/pr/protein.html (1135 words)

	Protein - Wikipedia, the free encyclopedia
		Proteins are essential to the structure and function of all living cells and viruses.
		Proteins are generally large molecules, having molecular masses of up to 3,000,000 (the muscle protein titin has a single amino acid chain 27,000 subunits long) however protein masses are generally measured in kiloDaltons (kDa).
		Proteins are broken down by proteases into smaller polypeptides to provide amino acids for the organism, including those the organism may not be able to synthesize itself.
	en.wikipedia.org /wiki/Protein (3139 words)

	Protein - Facts, Information, and Encyclopedia Reference article
		Nearly all the biological catalysts known as enzymes are soluble proteins (with a recent notable execption being the discovery of ribozymes, RNA molecules with the catalytic properties of enzymes.) Antibodies, the basis of the adaptive immune system, are another example of soluble proteins.
		Protein is an important macronutrient to the human diet, supplying the body's needs for nitrogen and amino acids, the building blocks of proteins.
		Protein is the major component in the regulation, growth and differentation of muscles, tendons, enzymes, skin, hair, eyes, as well as a tremendous variety of other organs and processes.
	www.startsurfing.com /encyclopedia/p/r/o/Protein.html (2193 words)

	News & Features: Surprising complexity in of Ffh and FtsY protein targeting in bacteria
		These tags can direct one protein to the cell's nucleus, where it regulates gene expression, say, while another is sent to the hinterlands of the cell membrane, where it receives environmental signals.
		Protein targeting is crucial even as cells are building proteins—otherwise, for example, proteins won't fold into the proper shape.
		The signal recognition particle (SRP) mediates the cotranslational targeting of nascent proteins to the eukaryotic endoplasmic reticulum membrane or the bacterial plasma membrane.
	www.iscid.org /boards/ubb-get_topic-f-1-t-000187.html (1028 words)

	Proteins: Biogenesis to Degradation - BioChemWeb.org
		Orientation of Proteins in Membranes (OPM) Database - A database of membrane-associated proteins with known structure, providing proteins' spatial arrangement relative to the membrane.
		Lysosomal Proteolysis - An introduction to protein degradation in the lysosome with diagrams and images of lysosomes.
		The AAA Server - Information and databases on proteins of this proposed protein superfamily (AAA for ATPases Associated with various cellular Activities), which includes a range of proteins involved in processes such as cell cycle regulation, vesicular transport, mitochondrial function, peroxisome assembly and proteolysis (for instance, certain subunits of the 26S proteasome and metalloproteases).
	www.biochemweb.org /proteins.shtml (731 words)

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