Proteins are large organic compounds made of amino acids arranged in a linear chain and joined together by peptide bonds between the carboxyl and amino groups of adjacent amino acid residues.
Protein targeting or protein sorting is the mechanism by which a cell transports proteins to the appropriate positions in the cell or outside of it.
Proteins
Proteins are macromolecules. They are constructed from one or more unbranched chains of amino acids; that is, they are polymers.
PROTEIN SYNTHESIS
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RNA links the information in DNA to the sequence of amino acids in protein ...
protein
compound of carbon, hydrogen, oxygen, and traces of phosphorous or sulfur
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
proteins
nitrogenous organic compounds, containing more than about 100 amino acid residues, molecular weight 8,000-200,000, in vegetable and animal matter.
A protein found in the cell wall of the bacterium Staphylococcus aureus which binds to the Fc section of immunoglobulins and is therefore used to collect antigen-antibody complexes.
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 ...
A large molecule composed of one or more chains of amino acids in a specific order; the order is determined by the base sequence of nucleotides in the gene that codes for the protein.
Protein
Proteins are an important class of molecules found in all living cells. A protein is composed of one or more long chains of amino acids, the sequence of which corresponds to the DNA sequence of the gene that encodes it.
Protein Microarrays
Another strategy for the large-scale study of proteins is similar to the DNA microarrays, which measure gene expression in different cells types.
GPCRs (G-protein-coupled receptors) play key roles in many cellular processes, and malfunction may lead to a range of pathologies, including psychiatric and neurological disorders.
Integral proteins are the hard workers of the cell membrane. Some integral proteins cross the membrane and act as pathways for ions and molecules.
From genes to proteins. In the cell nucleus, RNA is produced by transcription, in much the same way that DNA replicates itself.
Green Fluorescent Protein (GFP)
The green fluorescent protein is a protein from a jellyfish. GFP converts a blue light (activation light) to a green light (emission light).
Proteins
Proteins are made up of linear sequences of amino acids. There are 20 naturally occurring amino acids in all living organisms. The number of different amino acids (20) is close to the number of letters in our alphabet (26).
protein - polypeptide chain which serves a structural or enzymatic role or other role in the cell.
replicated chromosomes - chromosomes which have undergone DNA replication and contain two sister chromatids.
protein -- class of biochemical compounds constructed from amino acids. Proteins may be structural, such as those that make up hair and cartilage, or they may be reactive, such as the enzymes.
Proteins: The active molecules in all cells. Proteins control biochemical reactions and determine the physical structure of organisms.
Protein A molecule composed of amino acids lined up in a precise order determined by a gene, then folded into a specific three-dimensional shape.
Protein products
Genes that code for the desired protein can be inserted into plasmids and the plasmids are used to transform cells. Many useful human proteins are now synthesized by transgenic bacteria. Some of these are listed below.
protein phosphatase
An enzyme that removes phosphate groups from proteins, often functioning to reverse the effect of a protein kinase.
proteoglycans ...
proteins Polymers made up of amino acids that perform a wide variety of cellular functions. One of the classes of organic macromolecules that function as structural and control elements in living systems.
protein domain Protein domains are conserved regions of amino acid /structural similarity in protein sequences. Domains generally represent functional units having some form of biological activity.
Protein kinase. An enzyme that adds phosphate groups to a protein molecule at serine, threonine, or tyrosine residues.
Proteolytic. The ability to break down protein molecules.
Provirus. See virus.
protein
A three-dimensional biological polymer constructed from a set of 20 different monomers called amino acids.
Covered in BIOL1020 Lab 2 Biological Molecules ...
Protein
A large complex molecule made up of one or more chains of amino acids. Proteins perform a wide variety of activities in the cell. [Talking Glossary]
Prokaryote ...
Protein disulfide isomerase An enzyme that catalyzes the formation of correct disulfide pairings in nascent proteins; preferentially reacting with peptides that contain cysteine residues but otherwise undiscriminating, ...
RecA protein
The protein encoded by the recA gene which is essential for homologous recombination. The RecA protein is also involved in the induction of the SOS response and the induction of lambda prophage in response to DNA damaging agents.
Apolipoprotein AI Mutations and Information A closer look at this mutation and the creationist reaction.
Protein synthesis requires the assistance of two other kinds of RNA molecules in addition to rRNA. Messenger RNA (mRNA) provides the template of instructions from the cellular DNA for building a specific protein.
Proteins in the serum are critical to maintaining the pH balance in the body; it is largely the charged amino acids that are involved in the buffering properties of proteins.
Protein
- A complex biological molecule composed of a chain of units called amino acids.
Proteins that are not part of a virus capsid but perform regulatory or other functions.
Protein polymorphism. Presence of several variants of a protein of a given type (e.g., a certain enzyme, such as carboxylase) in a population ...
protein kinases - Enzyme that transfers the terminal phosphate group of ATP to a specific amino acid of a target protein ...
Protein Engineering Methods
How to Make a Tris Buffer
More on IP
Related Guide Picks ...
Proteins constitute more than the 50% of cells' solid matter. Proteins are the more complex and functionally more versatile among biomolecules, as for cell composition, because proteins form structures like membranes, micro fibers, skeletons, cilia, ...
protein synthesis The assemblage of protein as determined by the nucleotide sequence of a messenger RNA and the assistance of transfer RNA aligning amino acids in the proper arrangement.
GLYCOPROTEIN - A glycosylated protein.
GLYCOSYLATION - The covalent addition of sugar moities to N or O atoms present in the side chains of certain amino acids of certain proteins, ...
Protein associated with DNA in chromosomes in the nucleus of the cell.
Related Terms:
Protein ...
Histone
Protein associated with DNA in chromosomes in the nucleus of the cell.
An enzyme (protein) that's part of the human immunodeficiency virus reads the sequence of viral RNA nucleic acids that have entered the host cell and transcribes the sequence into a complementary DNA sequence.
4. What do proteins do?
5. What are proteins made from?
6. What foods should you eat if you want protein?
actin - protein which when polymerized forms microfilaments, part of the cytoskeleton and necessary for cytokinesis and other cellular functions. Also well known as a major component of the contractile apparatus of muscle cells.
Enzymes proteins that act as catalysts (cause other chemicals to react without being part of that chemical reaction)
(en = in; zym = yeast‚ leaven) ...
A type of basic protein that forms the unit around which DNA is coiled in the nucleosomes of eukaryotic chromosomes. Arginine and lysine rich basic proteins making up a substantial portion of eukaryotic nucleoprotein.
Zinc finger: A protein structural motif common in DNA binding proteins. Four Cys residues are found for each "finger" and one finger can bind a molecule of zinc. A typical configuration is: CysXxxXxxCys--(intervening 12 or so aa's)--CysXxxXxxCys.
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).
Alpha-fetoprotein (AFP) -- a protein excreted by the fetus into the amniotic fluid and from there into the mother's bloodstream through the placenta.
DNA - deoxyribonucleic acid is the double-helix molecule holding the genetic information of organisms that, along with protein, composes the chromatin ...
a protein or RNA molecule). See gene expression .
Gene expression The process by which a genes coded information is converted into the structures present and operating in the cell.
Phage displayPhage display vectors express the inserted DNA as a protein at a prominent position on their capsid. This allows capture and isolation of recombinant phage clones by immobilised interacting proteins (eg. antibodies).
The variety of proteins in the cytoplasmic membrane in prokaryotes is greater because of the significantly greater number of functions performed by it.
Anti-apoptotic proteins include Bcl-2 and HSP families (see also caspase). Apoptosis is often induced by activation of death receptors (DR) belonging to the tumor necrosis factor receptor (TNFR) family.
All organisms, from bacteria to animals, share the same basic machinery that copies and translates DNA into proteins.
of the long bones, in the bodies of the vertebræ, in the cranial diploë, and in the sternum and ribs the marrow is of a red color, and contains, in 100 parts, 75 of water, and 25 of solid matter consisting of cell-globulin, nucleoprotein, ...
Isoelectric focussing A technique for separating proteins on the basis of their charge. The mixture of proteins is placed in a gradient of pH across which an electric field is applied.
Amino acids: Basic structural unit of proteins.
Amphidromic Point: The central point of a cyclonic tidal system, at which the vertical astronomical tidal range is nil, or very small, ...
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 ...
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.
 See also: Proteins, Trans, Organ, Cells, DNA
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