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Glutamate.enzdes

Glutamic Acid (glutamate) / GLU / E (EnzDes coloring)

Glutamic Acid (GLU OR E), usually known as glutamate in Foldit, is a hydrophilic amino acid. Its shape in Foldit is almost the same as glutamine, to which it is closely related.  The CPK or EnzDes coloring options (found in view options) can be used to tell the two apart.

Glutamic Acid has a tendency to form part of a helix, as part of the "MALEK" group of amino acids.

In the Foldit Lua interface, the functions structure.GetAminoAcid and structure.SetAminoAcid use lowercase "e" for glutamic acid/glutamate.

Glutamate.bonding

Glutamate's sidechain contains two oxygen atoms, which can act as hydrogen bond acceptors.

Glutamate's sidechain contains two oxygen atoms which can act as hydrogen bond acceptors. The end of the sidechain is a carboxyl group, the same structure found in the backbone of amino acids. The carboxyl group means glutamate's sidechain is formally considered acidic. See the Sidechain Bonding Gallery and the Sidechain Bonding Table for other sidechain donors and acceptors.

For more, see Glutamic acid on wikipedia.