Alcohol
... around 16-19 they are generally slightly weaker
acids than water , but they are still able to react ... it weakly basic in the presence of strong
acids such as sulfuric acid . For example, with ... to give aldehydes , ketones or carboxylic
acids , or they can be dehydrated to alkenes . They ...
Alpha helix
... based on the known crystal structures of amino
acids and peptides and Pauling's prediction of planar peptide bonds .
The amino
acids in an α helix are arranged in a helical ... of the polypeptide chain is too high. Some amino
acids (called helix breakers ) like proline will ...
Amino acid
... used to refer to alpha amino acids: those amino
acids in which the amino and carboxylate ...
3 Reactions
4 List of standard amino
acids
4.1 Structures
4.2 Chemical properties
5 Uses of substances derived from amino
acids
Overview
...
Antibody
... α and γ have approximately 450 amino
acids , while μ and ε have approximately 550 ... of one domain. These domains are about 110 amino
acids long. There are also some amino
acids between constant domains.
There are only two ...
Biochemistry
... proteins , carbohydrates , lipids , nucleic
acids , and other biomolecules . Recently biochemistry ... Carbohydrates
Lipids
Proteins and Amino
acids
DNA , RNA and Nucleic
acids
This paragraph needs to be moved to Talk ...
Cell metabolism
... or combine simpler substances, such as amino
acids , into more complex organic compounds, such as enzymes and nucleic
acids .
Catabolism
Catabolism is a type of ... is the breakdown of proteins into amino
acids and simple derivative compounds, for transport ...
Citric acid cycle
... for many compounds such as certain amino
acids , and some of its reactions are therefore ... into their constituent amino acids. These amino
acids are brought into the cells and can be a source ... are hydrolyzed to break them into fatty
acids and glycerol . In the liver the glycerol can be ...
Genetic code
... represents a protein sequence, three amino
acids long. ( DNA is also a sequence of nucleotide ... what codons specify each of the 20 standard amino
acids involved in translation. These are called ... codon table
This table shows the 20 amino
acids used in proteins, and the codons that code for ...
DNA
... Since there are 64 possible codons, most amino
acids have more than one possible codon. There are ... the month
Open Directory Project : Nucleic
acids
17 April, 2003, BBC News: Most ancient DNA ... Francis Crick, " Molecular structure of nucleic
acids , A structure for Deoxyribose Nucleic Acid ". ...
Gel electrophoresis
... When separating proteins or small nucleic
acids ( DNA , RNA , or oligonucleotides ) the gel is ... polyacrylamide . When separating larger nucleic
acids (greater than a few hundred bases ), the ... or formamide , are used to renature the nucleic
acids and cause them to behave as long rods again.
...
Endoplasmic reticulum
... covered with ribosomes (which assemble amino
acids into proteins based on instructions from the ... membranes such as phospholipids ), fatty
acids and steroids (e.g., hormones ), and also ... chain (e.g., a protein) contains a few amino
acids that work as an address tag, which are removed ...
Enzyme
... protein made up of about hundred amino
acids or more, or an oligomeric protein consisting of ... produced as a long, linear chain of amino
acids , which folds in a particular fashion to produce ... (s) attach, and active site (s), where the amino
acids perform the catalysis; and frequently one or more ...
Gel electrophoresis
... When separating proteins or small nucleic
acids ( DNA , RNA , or oligonucleotides ) the gel is ... polyacrylamide . When separating larger nucleic
acids (greater than a few hundred bases ), the ... or formamide , are used to renature the nucleic
acids and cause them to behave as long rods again.
...
Genetic code
... represents a protein sequence, three amino
acids long. ( DNA is also a sequence of nucleotide ... what codons specify each of the 20 standard amino
acids involved in translation. These are called ... codon table
This table shows the 20 amino
acids used in proteins, and the codons that code for ...
Insulin
... his with Collip.
The exact sequence of amino
acids comprising the insulin molecule, the so-called ... all the cells.
Insulin is built from 51 amino
acids and is one of the smallest proteins known; ... the reverse
increased esterification of fatty
acids – forces adipose tissue to make fats (ie, ...
Citric acid cycle
... for many compounds such as certain amino
acids , and some of its reactions are therefore ... into their constituent amino acids. These amino
acids are brought into the cells and can be a source ... are hydrolyzed to break them into fatty
acids and glycerol . In the liver the glycerol can be ...
Nephron
... ions ), solutes (such as glucose , amino
acids , phosphates , and so on) according to the ... , contains water , glucose , salt , amino
acids , and urea .
Proximal tubule
The valuable molecules, water , glucose , salt , and amino
acids are reabsorbed by the blood . The filtrate is ...
Nutrition
... into question.
The balance of essential fatty
acids (linoleic and linolenic oil) has been discovered ...
Imbalances in omega 3 and omega 6 fatty
acids is thought to be related to autism and some ... China project
enzyme
essential amino
acids
Essential fatty acid
food pyramid
...
Origin of life
... basic biomolecules such as components of amino
acids , while not settled, is less controversial than ... that would undergo cross-reactions with the amino
acids or terminate the peptide chain.
A possible ... of these postulate early appearance of nucleic
acids (" genes -first"), whereas the evolution of ...
Peptide
... linking, in a defined order, of various amino
acids . The link between one amino acid residue and the ... to make synthetically from the constituent
amino
acids are called peptides rather than proteins. The dividing line is at approximately 50 amino
acids in length, since naturally-occurring proteins ...
Peptide
... linking, in a defined order, of various amino
acids . The link between one amino acid residue and the ... to make synthetically from the constituent
amino
acids are called peptides rather than proteins. The dividing line is at approximately 50 amino
acids in length, since naturally-occurring proteins ...
Prion
... ( bacteria , viruses , etc.) contained nucleic
acids that are necessary for reproduction. The prion ... asserts that all living organisms use nucleic
acids to reproduce. Prusiner's idea — that a ... ( protein domain ) with many repeats of the amino
acids glutamine (Q) and asparagine (N); these ...
Protein
... weight organic compound that consists of amino
acids joined by peptide bonds . Proteins are ... nutrition, proteins serve as the source of amino
acids for organisms that do not synthesize those amino
acids natively.
Proteins are one of the classes of ...
Purine
... their tautomers . Two of the bases in nucleic
acids , adenine and guanine , are purines. In DNA ... a complex pathway using atoms from the amino
acids glycine , glutamine , and aspartic acid , as ... .
Purines from turnover of nucleic
acids (or from food) can also be salvaged and reused in ...
Endoplasmic reticulum
... covered with ribosomes (which assemble amino
acids into proteins based on instructions from the ... membranes such as phospholipids ), fatty
acids and steroids (e.g., hormones ), and also ... chain (e.g., a protein) contains a few amino
acids that work as an address tag, which are removed ...
Endoplasmic reticulum
... covered with ribosomes (which assemble amino
acids into proteins based on instructions from the ... membranes such as phospholipids ), fatty
acids and steroids (e.g., hormones ), and also ... chain (e.g., a protein) contains a few amino
acids that work as an address tag, which are removed ...
Endoplasmic reticulum
... covered with ribosomes (which assemble amino
acids into proteins based on instructions from the ... membranes such as phospholipids ), fatty
acids and steroids (e.g., hormones ), and also ... chain (e.g., a protein) contains a few amino
acids that work as an address tag, which are removed ...
Vitamin
... such as dietary minerals , essential fatty
acids or essential amino
acids . Nor is it used for the large number of other ... designation originally given to essential fatty
acids that the body cannot manufacture. They were ...
Adenosine triphosphate
... cells . ATP also plays an important role in the synthesis of nucleic
acids . ATP molecules are also used to store the energy plants make in ... photosynthesis .
The main fuels for ATP synthesis are glucose and fatty
acids . Initially glucose is broken down into pyruvate in the cytosol . Two ...
Alternative splicing
... mRNA transcript. However, the intron must be properly encoding for amino
acids . The intron's code must be properly expressible, otherwise a stop codon ... in this case, certain exons are spliced out to alter the sequence of amino
acids in the expressed protein.
Importance in molecular genetics
...
Amine
... Reactions
Dissolving secondary and tertiary amines using strong
acids like HI, HBr, or HCl does not lead to a lower grade amine and an ...
Because they are basic, amines can neutralize carboxylic
acids to form the corresponding substituted ammonium carboxylate salts. Upon ...
Anabolism
... processes include breakdown of muscle protein in order to use amino
acids as substrates for gluconeogenesis (much like burning furniture in ... you are out of firewood), and breakdown of fat in adipose to fatty
acids for fuel.
Because it is counterproductive to have anabolic and ...
Biopolymer
... in which the monomer units, respectively, are sugars , amino
acids , and nucleic
acids . The exact chemical composition and the sequence in which these units are ...
Blood
... ( leukocytes , abnormal tumor cells) and different substances ( amino
acids , lipids , hormones ) to be transported between tissues and organs. ... Kuppfer cells in the liver. The liver also clears proteins and amino
acids (the kidney secretes many small proteins into the urine ).
...
Anabolism
... processes include breakdown of muscle protein in order to use amino
acids as substrates for gluconeogenesis (much like burning furniture in ... you are out of firewood), and breakdown of fat in adipose to fatty
acids for fuel.
Because it is counterproductive to have anabolic and ...
Chromatin
... (thus the name which literaly means coloured material). The nucleic
acids are generally in the form of double-stranded DNA. The major proteins ... (thus the name which literaly means coloured material). The nucleic
acids are generally in the form of double-stranded DNA. The major proteins ...
Chromatography
... coordinate covalent binding between histidine or other unique amino
acids (either naturally present on the surface of the protein or grafted with ... pure protein is obtained.
See also
Paper chromatography of amino
acids
External Links
Library 4 Science online books about ...
Collagen
... It contains a lot of glycine and proline , as well as two amino
acids that are not inserted directly by ribosomes – hydroxyproline and ... Another rare feature of collagen is its regular arrangement of amino
acids in each of the alpha chains of the collagen sub-units. The sequence ...
Diabetes mellitus
... . Fat in adipose tissue is reduced to triglycerides and fatty
acids by lipolysis . Muscle is degraded to release amino
acids for gluconeogenesis. The rise of fatty acid levels is accompanied by a ...
Dialysis
... is used at body temperature, and consists of a solution of glucose, amino
acids and mineral ions. The solution is sterilized. Urea diffuses into the ... does not contain the compound. However, concentrations of glucose, amino
acids and minerals are either similar to those of normal plasma to prevent ...