Histidine

... secreted. I guess you have removed the cells and probably concentrated the medium and exchanged with some buffer, right? The medium contains some histidine, but at low concentration (0.2 mM). More important will be probably pH of the medium, because it is not buffered.

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... you just add benzene to the Ala and you have (surprisingly :lol:) phenylalanine; just add hydroxyl and you get tyrosine. Add imidazole and you get histidine. With the largest system you get tryptophan ;) For the acidic AAs, just add carboxyl to Ala and you get aspartic acid. Since G lutamic acid ...

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... goes over which amino acids can be phosphorylated...but after some research on the internet I've come up with: serine, threonine, tyrosine, and histidine? Is this right? And as for the enzyme... either kinase or phosphatase? F) Again, I think I need the amino acid code for this, but I know that ...

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... Genotype Phenotype thi - Thi- cannot synthesise vitamin B1 (thiamine) trp - Trp- cannot synthesise tryptophan his - His- cannot synthesise histidine met - Met- cannot synthesise methionine arg - Arg- cannot synthesise arginine thr - Thr- cannot synthesise threonine phe - Phe- cannot synthesise ...

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... web site I go to says something different, and my professor didn't add that to his slides. I know that Aspartic and Glutamic Acid are acidic; that Histidine, Arginine and Lysine are basic; but as for the other properties I mentioned...? Thanks, Holly

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