Sandbox Reserved 1236: Difference between revisions

From Proteopedia
Jump to navigationJump to search
No edit summary
No edit summary
Line 24: Line 24:


== Structural highlights ==
== Structural highlights ==
The structure of this protein comprises of <scene name='75/750285/Luciferintwosubunitview/1'>two prominent domains.</scene> The larger one contains an N terminal distorted beta-barrel accompanied by alpha helices. The second and smaller unit is consist of a beta sheet and alpha helix complex <ref>Viviani, V. R. (2002). The origin, diversity, and structure function relationships of insect luciferases. Cellular and Molecular Life Sciences, 59(11), 1833-1850. </ref>. The process of fluorescence is achieved through a two-step oxidation reaction involving the substrate Lucinferin accompanied with ATP, Magnesium and oxygen. The first step consist of using ATP-Mg in an Acylation reaction of the COOH group on Lucinferin producing a Luciferyl adenylate intermediate and a phosphate group. The second reaction uses oxygen to create an excited state of the molecule. The molecule then returns to its ground state emitting a photon of light. <ref>Conti, E., Franks, N. P., & Brick, P. (1996). Crystal structure of firefly luciferase throws light on a superfamily of adenylate-forming enzymes. Structure, 4(3), 287-298.</ref>
The structure of this protein comprises of <scene name='75/750285/Luciferintwosubunitview/1'>two prominent domains.</scene> The larger one contains an N terminal distorted beta-barrel accompanied by alpha helices. The second and smaller unit is consist of a beta sheet and alpha helix complex <ref>Viviani, V. R. (2002). The origin, diversity, and structure function relationships of insect luciferases. Cellular and Molecular Life Sciences, 59(11), 1833-1850. </ref>. The process of fluorescence is achieved through a two-step oxidation reaction involving the substrate Lucinferin accompanied with ATP, Magnesium and oxygen. The first step consist of using ATP-Mg in an Acylation reaction of the COOH group on Lucinferin producing a Luciferyl adenylate intermediate and a phosphate group. The second reaction uses oxygen to create an excited state of the molecule. The molecule then returns to its ground state emitting a photon of light. <sup>[1]</sup>