Histidine Micro Molecule

This is a framework molecular model kit of the Amino Acid Histidine.  This is part of our new line of MicroMolecules that are one half the scale of our regular framework molecular models at 0.5 inch per 1 Angstrom. The finished molecule literally fits in the palm of your hand.  No assembly required. Stay tuned for the release of all of the amino acids and other series soon to come.

Histidine is an essential amino acid that is used in the biosynthesis of proteins. It contains an α-amino group (which is in the protonated –NH₃⁺ form under biological conditions), a carboxylic acid group (which is in the deprotonated –COO⁻ form under biological conditions), and an imidazole side chain (which is partially protonated), classifying it as a positively charged amino acid at physiological pH. Initially thought essential only for infants, it has now been shown in longer-term studies to be essential for adults also.

Just like animals and microorganisms, plants need histidine for their growth and development.^[9]Microorganisms and plants are similar in that they can synthesize histidine.^[17] Both synthesize histidine from the biochemical intermediate phosphoribosyl pyrophosphate. In general, the histidine biosynthesis is very similar in plants and microorganisms.

CAUTION: THESE MOLECULES CONTAIN MANY SMALL PARTS NOT SUITABLE FOR CHILDREN UNDER 5 YEARS OF AGE.