Proteins

Proteins are macromolecules. They are constructed from one or more unbranched chains of amino acids; that is, they are polymers.
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Proteins containing the ATP-binding cassette motif. They include several types of transporters.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
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Proteins are modular in their structure, so that when the three-dimensional structure is looked at, there are separate folded portions of the protein and often each of those portions or domains carries out a different function.
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From genes to proteins. In the cell nucleus, RNA is produced by transcription, in much the same way that DNA replicates itself. RNA, however, substitutes the sugar ribose for deoxyribose and the base uracil for thymine, and is usually single-stranded.
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Reggie-1 and reggie-2 are two evolutionarily highly conserved proteins which are up-regulated in retinal ganglion cells during regeneration of lesioned axons in the goldfish optic nerve.
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Proteins are synthesized by ribosomes in the cytoplasm. This process is also known as protein biosynthesis or simply protein translation.
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Proteins, on the other hand, can have different charges and complex shapes, therefore they may not migrate into the gel at similar rates, or at all, when placing a negative to positive EMF on the sample.
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Proteins are suspended in the inner layer, although the more hydrophilic areas of these proteins "stick out" into the cells interior and outside of the cell.
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Proteins Produce Genetic Traits - Archibald Garrod, 1909
Garrod noticed that people with certain genetic abnormalities (inborn errors of metabolism) lacked certain enzymes. This observation linked proteins (enzymes) to genetic traits.
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Proteins can also serve as molecular markers through their enzymatic activities.
The mouse MHC region contains the H2 major histocompatibility loci.
The human major histocompatibility antigens are the HLA proteins.
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Proteins: The active molecules in all cells. Proteins control biochemical reactions and determine the physical structure of organisms.
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proteins - long linear polymers of amino acids joined head to tail by peptide bond between carboxylic acid group of one amino acid to the amino group of the next.
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proteins: long chains of amino acid units that are the main molecules from which living things are constructed.
Protista: a kingdom that includes protozoa, one-celled algae, and slime molds.
protocells: the first cells.
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For proteins, a process in which a protein unravels and loses its native conformation, thereby becoming biologically inactive. For DNA, the separation of the two strands of the double helix.
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[3] Proteins are the workhorse chemicals in the cell. There are two major kinds of proteins, structural proteins and enzymes. Typically an enzyme is optimized to perform a simple chemical operation on another chemical (the substrate).
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Enzymes proteins that act as catalysts (cause other chemicals to react without being part of that chemical reaction)
(en = in; zym = yeast leaven) ...
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Once the proteins reach the trans face, they are embedded into coated transport vesicles and brought to their final destinations. An example is the formation of glycoproteins (used in cell membranes). Vesicles from the ER have proteins.
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Class of proteins responsible for transposition. One function is to prepare insertion by cutting at the integration site.
Gene ...
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Enzymes. Proteins that control the various steps in all chemical reactions.
EPA. See Environmental Protection Agency.
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Proteins that unwind the DNA double helix.
Hemimethylation
Double stranded DNA in which only one strand is methylated at a particular site. For example, at GATC sites in E.
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CHAPERONE PROTEINS - A series of proteins present in the endoplasmic reticulum which guide the proper folding of secreted proteins through a complex series of binding and release reactions.
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histones -- proteins attached to the DNA of eukaryotes which allows it to be packaged into chromosomes.
hydrophilic -- "water loving". Hydrophilic compounds dissolve easily in water, and are usually polar.
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A library of proteins (e.g., peptides, antibodies, purified proteins, or unknown protein samples) is spotted on microscopic slides. They are usually used to identify novel proteins or protein-protein interactions.
Related
Microarray ...
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**Enzymes are proteins that catalyze biochemical reactions.
Compare/contrast four types of
macromolecules.
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histones - basic proteins that bind and "package" eukaryotic DNA; major protein constituent of chromosomes.
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Any of 20 basic building blocks of proteins-- composed of a free amino (NH2) end, a free carboxyl (COOH) end, and a side group (R). Ampicillin (beta-lactamase).
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DNA fingerprint technique -- a method employed to determine differences in amino acid sequences between related proteins; relies upon the presence of a simple tandem-repetitive sequences that are scattered throughout the human genome.
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per- by, through, throughout peri- around, round-about peripheral proteins Proteins that are loosely or reversibly bound to a membrane by hydrogen bonds or electrostatic forces which can be easily released from the membrane.
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Proteome: The complete set of proteins encoded by the genome.
Probe: Single- stranded DNA or RNA fragment of specific base sequence, labeled either radioactively (often incorporating 32P or 35S) or immunologically, ...
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First isolated from striated muscle and often referred to as one of the muscle proteins. G-Actin is the globular monomeric form of actin, 6.7 x 4.0nm: it polymerizes to form filamentous F-actin.
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This allows capture and isolation of recombinant phage clones by immobilised interacting proteins (eg. antibodies). This screening method is called biopanning.
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Gene: the segment of DNA at a particular locus on a particular chromosome that controls production of proteins and enzymes and influences the development of a specific trait.
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The process in which molecules (such as proteins, DNA, or RNA fragments) can be separated according to size and electrical charge by applying an electric current to them.
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A purification procedure to determine if two different molecules (usually proteins) interact. An antibody specific to the protein of interest is added to a cell lysis.
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The variety of proteins in the cytoplasmic membrane in prokaryotes is greater because of the significantly greater number of functions performed by it.
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Leucine zipper: A motif found in certain proteins in which Leu residues are evenly spaced through an a-helical region, such that they would end up on the same face of the helix. Dimers can form between two such proteins.
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: The complex of DNA and associated histone and non-histone proteins that represents the normal state of genes in the nucleus.
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The detection of identified proteins by electron microscopy, which makes use of specific antibodies that are tagged with a marker, usually colloidal gold, for visualization in the electron microscope.
LASER-SCANNING MICROSCOPY ...
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globulins A large group of compact proteins with high molecular weight; includes immunoglobulins (antibodies).
glochidium A larval stage of freshwater bivalves in the family Unionidae; it lives as a parasite on the gills or fins of fishes.
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The component of connective tissue surrounding cells and made up of the amorphous ground substance and fibrous proteins (mainly collagen fibres). The amorphous ground substance consists primarily of glycoproteins and proteoglycans.
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Amino acids. Basic structural unit of proteins
Anadromous fish. Fish that spends most of its life feeding in the open ocean but that migrates to spawn in fresh water
Anoxic. Lacking oxygen.
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Radioactive sulfur (35S): radioactive isotope of 32S, an element found in proteins
T Phages: A phage which infects Escherichia coli. Viral parasites of this type are labeled T1 through T7. T2 was the first phage observed under the electron microscope.
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uniqueness, especially of enzymes in given reactions and of proteins in a given organism
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby
What Topic Is Your BIOLOGY Paper On?
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Genes encode the information necessary for synthesizing proteins, which, in turn play a large role in influencing, although, in many instances, do not completely determine, the final phenotype of the organism.
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Ribosomal DNA genes
The genes that make the three RNA components of the ribosome - the particle (also containing 60 or more proteins) that is responsible for making proteins within the cell.
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Definition: Mass of genetic material composed of DNA and proteins that condense to form chromosomes in eukaryotic cell division. Chromatin is located in the cell's nucleus.
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lag phase
The stage of growth of microbial cells in which nucleic acids and proteins are synthesized, but in which there is no cell division.
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Mitochondrial ribosomes; these more closely resemble prokaryotic ribosomes than cytoplasmic ribosomes of the cells in which they are found, though they are even smaller and have fewer proteins than bacterial ribosomes.
Author: John Edwards ...
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38: Proteases in Biology and Medicine Essays in Biochemistry vol 37: Regulation of Gene Expression Essays in Biochemistry vol 36: Molecular Trafficking Essays in Biochemistry vol 35: Molecular Motors Essays in Biochemistry vol 34: Metalloproteins ...
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Plasma membrane - outer membrane of cells composed of proteins and a phospholipid bi-layer that controls cellular traffic ...
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