Protein change in function?
922460
the bacterial flagella is a well studied model used to display the evolution of proteins. For example, there are great similarities between some of the flagellar proteins and those of prokaryotic thype III secretion systems. Proteins that change function over time are generally discovered by different people in different models and thus provided different names.
405476
There are two kinds of protein chips:  the kind you eat and the microarray kind.  It is hard to answer this question without knowing which kind you are referring to. I am assuming it is the biological kind similar to the gene chip.  If so, you may look here:\n\nhttp://www.mrgco.com/TOC_Biochip_2003Ed.html
148116
Yes, because it changes at a molecular level.
767494
enzymes are protein.a change in ph results in a change in ions concentration.this changes the shape of the active site of enzyme.so the enzyme stops functioning
91223
Adding a few drops of copper sulphate solution to a protein solution, followed by a few drops of sodium hydroxide solution produces a purple/dark blue precipitate.\n\nIf any protein originally present in the solution has already been changed into amino acids by a protease enzyme for instance, then the precipitate will not appear.\n\nThat should give you a clue about molecules of amino acids compared to molecules of protein. (You might have to remind yourself of the structure of amino acids and proteins.)
380887
lol, last minute lab write ups. afaik enzymes dont change colour, as they are not supposed to change so id bet there is something else that the enzyme works on. better put up the other reagents to get a better answer
863262
1. Well, so far as I know enzymes are not changed by their reactions. \n2. There are also special molecules called "substrates" which specifically bind to an enzyme's "active site" (kinda like a key fitting into a hole) and is changed and then released by the enzyme.
327822
Are you looking at any protein in particular?  Look up in situ hybrdization for proteins ( at least it will give you an idea where it is localised).  I think that it would really depend on the system ad proteins that you want to study, so I am not sure how much else I can tell you, sorry.
1085923
lack of protein perhaps....
394985
Proteins are macromolecules. They are constructed from one or more unbranched chains of amino acids; that is, they are polymers. A typical protein contains 200–300 amino acids but some are much smaller (the smallest are often called peptides)\n\nWe know Proteins are Broken down from Protease and can be then broken further down into amino acids.\n\nWhy do we need Proteins for?\nWell ahve a look.\n\nMotion and locomotion of cells and organisms depends on contractile proteins. [Examples: Muscles] \nThe catalysis of all biochemical reactions is done by enzymes, which contain protein. \nThe structure of cells, and the extracellular matrix in which they are embedded, is largely made of protein. [Examples: Collagens] (Plants and many microbes depend more on carbohydrates, e.g., cellulose, for support, but these are synthesized by enzymes.) \nThe transport of materials in body fluids depends of proteins. [See Blood] \nThe receptors for hormones and other signaling molecules are proteins. \nProteins are an essential nutrient for heterotrophs. \nThe transcription factors that turn genes on and off to guide the differentiation of the cell and its later responsiveness to signals reaching it are proteins.\n\n4) Strcuture of a Protein\n\nProteins fold into a variety of 3-dimensional shapes. Experiments to unfold and refold proteins have shown that the amino acid sequence itself contains all the instructions needed for proper folding. Scientists have searched for rules governing folding but have found no reliable way to predict a 3-dimensional structure from a simple sequence.\n\nKnowing a protein's sequence does help, however. Having determined \n\n3) Importance of Proteins\nThere are proteins that build muscle, transport protein that carry nutrients, enzymes that 搄ump start?cellular activity, protein hormones involved in regulating metabolism, structural proteins like collagen, and special proteins needed for antibody production. Proteins are thus involved in all body functions, and are nessacary for health.\n\nProteins are large molecules that are made up of smaller chains of peptides. Peptides are chains of amino acids that are biochemically bonded together. There are about 50 amino acids is a single peptide chain. During normal digestion the proteins we take in are broken down into its simplest form (amino acids). These amino acids are then absorbed by the body and made back into proteins that the body needs. As we saw before proteins are crucial to a variety of body functions and structure. This is why everybody need to include protein foods in their diet\n\n\nSort of answer Your Question?
1108145
Your body adapts to the change.
100527
In simple terms it is function. A protein is a polypeptide, but it is a polypeptide that does something. It has a purpose.\n\nYou can of course also have polypeptides that are just junk. They don’t do anything. Chemically they belong to the same class as proteins but they lack a function.\n\nJazzSinger said  “A polypeptide is a protein in the making”. That isn’t true, In fact most polypeptides are exactly the opposite: they are proteins in the process of being destroyed.  Food is loaded with non-protein polypeptides, not because proteins are being made in food but because the cooking process destroys proteins.
278992
label the known protein with a radioactive isotope, or better yet, maybe you could label the protein with a flourescent dye (dont know how, its beyond my expertise) and where ever the protein binds on the receptive cell may be what you're looking for.  but i dont know of any assays per se for it.
621234
Protein?\n\nOnly thing I could come up with-do you have any letters?
943065
it will denature the protein
659200
I'm not sure what you are asking because of the typos. But here goes an answer for what I think you are trying to ask.\n\nA point mutation involving the addition of a BASE early in the coding, The protein resulting from The gene will be entirely different from the point of addition, since the reading frame will be moved forward. \n\nExample (HYPOTHETICAL)\n\nNormal DNA\nATCGGTACCATT\n\nNormal mRNA\nUAGCCAUGGUAA  The reading frame would be UAG-CCA-UGG-UAA...\n\nmutated mRNA (a C added by mistake)\nUAGCCCAUGGUAA The reading frame would be UAG-CCC-AUG-GUA..\n\nThis can cause the protein to be shorter, because it can create a stop codon somewhere with the addition, also it can make it longer, a stop codon no longer present where it should be.\n\nBasically the protein would be non-functioning.
616117
Low carb, high protein.