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== '''Exploring the Structure''' == | == '''Exploring the Structure''' == | ||
<applet load='1ema' size=' | <applet load='1ema' size='200' frame='true' align='left' caption='GFP_08' /> | ||
GFP is a beta barrel protein with 11 beta sheets. It is a 26.9kDa [[protein]] made up of 238 amino acids. The chromophore, responsible for the fluorescent properties of the protein, is buried inside the beta barrel as part of the central alpha helix passing through the barrel. The chromophore forms via spontaneous cyclization and oxidation of three residues in the central alpha helix: -Thr65 (or Ser65)-Tyr66-Gly67. This cyclization and oxidation creates the chromophore's five-membered ring via a new bond between the threonine and the glycine residues. | GFP is a beta barrel protein with 11 beta sheets. It is a 26.9kDa [[protein]] made up of 238 amino acids. The chromophore, responsible for the fluorescent properties of the protein, is buried inside the beta barrel as part of the central alpha helix passing through the barrel. The chromophore forms via spontaneous cyclization and oxidation of three residues in the central alpha helix: -Thr65 (or Ser65)-Tyr66-Gly67. This cyclization and oxidation creates the chromophore's five-membered ring via a new bond between the threonine and the glycine residues. | ||