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The Diamond Patch Three graphical representations of the diamond-shaped pattern of hydrophobic amino-acid sidechains for one helix of a packed helical structure (helix four of the protein thermolysin). The diamond shows most clearly in the alignment of beta-carbon atoms (middle), the atoms closest to the helix. This pattern represents a +4 helix, so called due to the number of amino acids between those forming two parallel ridges (relative positions 0 & 4 and 3 & 7). The space-filling representation (left) shows the full conformation of the sidechains, which form a groove between the parallel ridge surfaces. The bond representation (right) shows internal orientation of sidechain structure. http://www.psc.edu/science/Rosenquist/rosen-nich.html I really don't know, but this is some start. Usually this depends on the type of DNA helix you are talking about, as there are three- A, B and Z. B helices have 10 base pairs per 360 degree turn, A helices have 11, and Z helices are really weird and usually no one asks about them. DNA codes for a message specifying an amino acid sequence that builds a polypeptide. I'm not sure if this is what you were talking about. If not, those are the only helices I know anything about.
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Give an example of polypeptide?
Protein.
What consist of long chain of amino acids?
Proteins contain long chains of amino acids. The amino acids in protein are what give proteins their high energy content.
What are the names of the two chemical groups that all amino acids have in common?
Amino = Amine Acid = Carboxylic Acid These two groups are what give amino acid's there name. Source: http://en.wikipedia.org/wiki/Amino_acid
Will Alanine give a negative Biuret test?
Because solutions with "free" amino acids don't have peptide bonds and peptide bonds need to be present in order for the test to be positive.
What is a string of nucleotides that give the cell information about a certain trait?
Amino Acids
Give an example of polypeptide?
Protein.
What funtional group will give a positive results with ninhydrin reagents?
Amino acids with a free -NH2 group and proteins containing free amino acids
What consist of long chain of amino acids?
Proteins contain long chains of amino acids. The amino acids in protein are what give proteins their high energy content.
What foods give you amino acids?
Penuts, meat, fish, things with lots of proteins
Will superpump 250 give a positive drug test?
NO its just caffein and amino acids.
What amino acids give positive Ehrlich test?
The Ehrlich test is used to determine indoles.
Proteins are made of?
Proteins (also known as polypeptides) are organic compounds made of amino acids arranged in a linear chain and folded into a globular form. The amino acids in a polymer are joined together by the peptide bonds between the carboxyl and amino groups of adjacent amino acid residues. The sequence of amino acids in a protein is defined by the sequence of a gene, which is encoded in the genetic code.Protiens are made up of carbon, hydrogen, oxygen, nitrogen, and sometimes even sulfur.
What makes protiens?
The ingredients of a protein are amino acids. To build a protein we need to build a long chain of amino acids. There are 20 different types of amino acids, so there are lots of different protein chains we can build. Biologists give amino acids a code letter, as for DNA. This is much easier than writing out the whole name each time. For example, Mis methionine, Lis leucine, Fis phenylalanine (because Pis proline).
What color develops when ninhydrin react with amino acids?
These are the amino acids that will yield positive result to the ninhydrin test: Non-polar amino acids: Glycine, Alanine, Valine, Leucine, Isoleucine, Phenylalanine, Methionine, Tryptophan Polar Neutral Amino acids: Serine, Cysteine, Threonine, Asparagine, Glutamine, Tyrosine Polar Acidic Amino Acids: Aspartic acid and Glutamic acid Polar Basic Amino Acids: Histidine, Lysine, Arginine
Why amino acids give yellow colour with nitric acid?
In this reaction the yellow xanthoproteic acid is formed.
Will glutamic acid give a positive biuret test?
Amino acids doesn't react with the biuret reagent.
How can only four bases in RNA carry instructions for 20 different amino acids?
The properties of proteins are determined by the order in which different amino acids are joined together to produce polypeptides. The genetic code is read three letters at a time, so that each "word" of the coded message is three bases long.
