Loading...
  • Insoluble
  • Insoluble in ether, ethanol, acetone and acetic acid. (mfa.org)
  • At neutral or acid pH, casein is relatively insoluble in water, and is easily separated from other milk proteins, sugars and minerals. (wikipedia.org)
  • amine
  • This avoids unwanted reaction at those groups during the peptide coupling step, which occurs between the peptide N-terminal amine and the C-terminal carboxylate of the amino acid to be coupled. (wikipedia.org)
  • The free N-terminal amine of the peptide is coupled to a single N-protected amino acid unit. (wikipedia.org)
  • The N-terminal protecting group is removed in the subsequent step, revealing a new N-terminal amine onto which a further amino acid may be attached. (wikipedia.org)
  • kidneys
  • Once glutamic acid has coupled with ammonia, it is called glutamine and can as such safely transport ammonia to the liver, where the ammonia is eventually converted to urea for excretion by the kidneys. (encyclopedia.com)
  • molecule
  • It is a very polar molecule that plays the role of an excitatory amino acid (EAA) in neurotransmission. (mfa.org)
  • In the case of aspartic, glutamic and metallopeptidases, the nucleophile is an activated water molecule. (wikipedia.org)
  • amide
  • Thus highly optimized amide bond formation conditions are required, employing highly efficient coupling reagents and adding an excess of each amino acid (between 2- and 10-fold). (wikipedia.org)
  • ethanol
  • Although the yeast used to make beer results in beers being a source of B vitamins, their bioavailability ranges from poor to negative as drinking ethanol inhibits absorption of thiamine (B1), riboflavin (B2), niacin (B3), biotin (B7), and folic acid (B9). (wikipedia.org)
  • form
  • An optically active form of glutamic acid having L -configuration. (ebi.ac.uk)
  • The serine, threonine and cysteine peptidases utilise the amino acid as a nucleophile and form an acyl intermediate - these peptidases can also readily act as transferases. (wikipedia.org)
  • side
  • Each amino acid to be coupled to the peptide chain N-terminus must be protected on its N-terminus and side chain using appropriate protecting groups such as Boc (acid-labile) or Fmoc (base-labile), depending on the side chain and the protection strategy used (see below). (wikipedia.org)
  • Name
  • Some are better known by name than number: niacin, pantothenic acid, biotin and folate. (wikipedia.org)