how do i draw skeletal formula of amino acids?
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All amino acids have a similar constituent and one variant substituent. First there is a central carbon atom, also called the alpha carbon. So you write the letter C first. Then there is the amino group, which all amino acids have of course. That is NH3+. You write this to the left of the C and connect them with a single bond. This makes the amino acid an L-amino acid, which is the form found in living systems. Then, there is the acid part, COO- or carboxylate. You write this part on top of the alpha carbon and connect it with a single bond (a single line). And on the right of the alpha carbon, you draw a Hydrogen atom (H) and connect it to the central carbon atom with a single bond. Now you have drawn something all amino  acids have in common. The remaining part is usually denoted by R and is drawn below the alpha carbon and connected to it by a single bond. This R group differs from on amino acid to the other. In the simplest form, the amino acid Glycine, this R group is H. But it can range from long carbon chains to aromatic groups as in the case of Tryptophan. \n\nLook on the web for more guidance on this issue. You might find in some books that the NH3+ is written as NH2 and the COO- as COOH. But that  is the way Chemists do it. Us biochemists consider everything at Physiological conditions, which is also logical, and at such conditions the acid and the base are found in ionised forms.
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Try it out in the lewis-dot diagram\n      ..        ..\nH-O-Ca-O-H\n      ..        ..
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Amino acids is the answer
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apply formula for it\nits easy
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http://www.sirinet.net/~jgjohnso/skeleton.html
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View source of the that page.\nYou will see the formulas.
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amino acids build proteins, proteins build muscles... 6th grade science
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formula is C15H31COONa\n\nthere are single bonds between th 15 C atoms and also between C and H.\nyou can see the structure here www.kcpc.usyd.edu.au/discovery
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Here's a formula on this webpage you can use
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I'd recommend Playdough (or similar clay material) as the basis.  You can make your own "dough" or buy some.  If you use different color Playdough, you can easily distinguish the parts of the cell.  And you can add paper flags glued to toothpicks to label the different parts (or make a color-coded legend).\n\nIf you find items that you want to have represent cell parts (e.g. threads = filaments, marbles = mitocondria, pipe cleaners = centrosome, etc.) you can just stick that into your clay model.  For things you can't find items for, just make them out of different colored clay. But I think clay as the basis for the cell model makes a lot of sense.
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www.chemistrylecturenotes.com/html/periodic_table.html \ncontains a printable image of the table
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The amino and carboxyl protons are very difficult to observe. Using 100% D2O will replace the carboxyl and amino protons with 2H, and you won't see anything. Use a different solvent and you can't be sure you are in the zwitterion form (pH is difficult to control in non-aqueous solutions and you will get different hydrogen bonding)\n\nIf you really want to see those protons your best bet would be to use 90% H2O / 10% D2O with either phosphate buffer or the perdeuterated buffer of your choice (you can get these from Cambridge Isotopes). Make sure the buffer concentration is large compared to your amino acid, and make sure you have adjusted the pH to the zwitterion range. When you aquire the spectrum you will need to use a water suppression sequence. Presat is the easiest, although I much prefer gradient selected 3-9-19. This still may not be enough to see the protons-- if they are exchanging the linewidth may become so broad as to disappear into the baseline.\n\nWhile it's difficult to observe the carboxyl and amino protons (they are *very* sensitive to solvent and pH) you should be able to see changes in the chemical shifts of the remaining protons, particularly the alpha protons.\n\nIf you are really interested, make a sample of your favorite amino acid and take spectra over a range of pH. Plot the chemical shifts of the visible protons as a function of pH and the shape of the curve should allow you to determine the pKa of the amino and carboxyl groups. Here you could get away with just using D2O, which makes the spectroscopy much simpler.\n\nGood luck and have some fun with this!
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Proteins are made of amino acids, the basic formula for them is:\n.......R\n........|\nH2N-C-COOH\n........|\n.......H\nwhere R is a side chain specific to each amino acid. there are 2 basic aminoacids which make all the proteins. Some proteins contain more than 100 amino chains.
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Amino acids are the basic structural building units of proteins. They form short polymer chains called peptides or polypeptides which in turn form structures called proteins. The process of such formation from an mRNA template is known as translation, which is part of protein synthesis.\nPhenylalanine is one of the standard amino acids.\nEnlarge\nPhenylalanine is one of the standard amino acids.\n\nTwenty amino acids are encoded by the standard genetic code and are called proteinogenic or standard amino acids. Combinations of these amino acids produce every single essential protein for the homeostasis of the human body. At least two others are also coded by DNA in a non-standard manner as follows:\n\n    * Selenocysteine is incorporated into some proteins at a UGA codon, which is normally a stop codon.\n    * Pyrrolysine is used by some methanogens in enzymes that they use to produce methane. It is coded for similarly to selenocysteine but with the codon UAG instead.\n\nOther amino acids contained in proteins are usually formed by post-translational modification, which is modification after translation in protein synthesis. These modifications are often essential for the function of the protein.\n\nProline is the only proteinogenic amino acid whose side group cyclizes onto the backbone: it links to the α-amino group, and thus is also the only proteinogenic amino acid containing a secondary amine at this position. Proline has sometimes been termed an imino acid, but this is not correct by current nomenclature rules.\n\nOver one hundred amino acids have been found in nature. Some of these have been detected in meteorites, especially in a type known as carbonaceous chondrites. Microorganisms and plants can produce uncommon amino acids, which can be found in peptidic antibiotics (e.g., nisin or alamethicin). Lanthionine is a sulfide-bridged alanine dimer which is found together with unsaturated amino acids in lantibiotics (antibiotic peptides of microbial origin). 1-Aminocyclopropane-1-carboxylic acid (ACC) is a small disubstituted cyclic amino acid and a key intermediate in the production of the plant hormone ethylene.\n\nIn addition to protein synthesis, amino acids have other biologically-important roles. Glycine and glutamate are neurotransmitters as well as standard amino acids in proteins. Many amino acids are used to synthesize other molecules, for example:\n\n    * tryptophan is a precursor of the neurotransmitter serotonin\n    * glycine is one of the reactants in the synthesis of porphyrins such as heme.\n\nNumerous non-standard amino acids are also biologically-important: Gamma-aminobutyric acid is another neurotransmitter, carnitine is used in lipid transport within a cell, ornithine, citrulline, homocysteine, hydroxyproline, hydroxylysine, and sarcosine.\n\nSome of the 20 standard amino acids are called essential amino acids because they cannot be synthesized by the body from other compounds through chemical reactions, but instead must be taken in with food. In humans, the essential amino acids are lysine, leucine, isoleucine, methionine, phenylalanine, threonine, tryptophan, valine. Histidine and arginine are generally considered essential only in children, because of their inability to synthesise them given their undeveloped metabolisms.\n\nThe phrase "branched-chain amino acids" is sometimes used to refer to the aliphatic amino acids: leucine, isoleucine and valine.
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click on this link http://www.tiem.utk.edu/~gross/bioed/webmodules/aminoacid.htm and look through the table. the answer should be there.
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well, it's hard to draw here. but when i want to find a chem structure, i look at http://www.chemfinder.com you can type naproxen sodium into the search box, and it draws out the structural formula and gives you the properties of the molecule. VERY COOL!
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It is trigonal bipyramidal in shape.                                                    try this & you would understand better                                            take a cardboard or a  paper.cut it in da shape of a triangle. suspend threads from da vertices of da triangle both upward & downward.                                                                                       now catch-hold of da threads.now 1 hand holds da threads from da top. The triangle remains in da mid position & the other hand holds da other 3 threads at the bottom                                            NOW the 2 hands are Cl atoms .THE 3 vertices of da triangle r also Cl atoms                                                                                   Phosphorous is at centroid of the triangle