Sandbox Reserved 333: Difference between revisions
From Proteopedia
Jump to navigationJump to search
Marina Mann (talk | contribs) No edit summary |
Marina Mann (talk | contribs) No edit summary |
||
| Line 7: | Line 7: | ||
<scene name='Sandbox_Reserved_333/Fig2/1'>gggggg</scene> | <scene name='Sandbox_Reserved_333/Fig2/1'>gggggg</scene> | ||
=Structure= | |||
:Mevalonate diphosphate decarboxylase exists as a symmetrical dimer<ref name = "Byres"/> <ref name = "Voynova"/> <ref name ="ByresMartin"/> . The C-terminal domains of each monomer are symmetrically oriented towards one another around a solvent-filled channel <ref name = "Byres"/>. The dimer is stabilized between alpha helices 6 and 10 on the monomers, and also through salt bridge interactions, tyrosine and proline stacking, and hydrophobic interactions <ref name = "Byres"/>. The interface between the monomers is very small, with only 7% of the total surface area of the monomer engaged in the interface interaction <ref name = "Voynova"/>. This small interface between monomers is a characteristic of GHMP kinases <ref name = "Voynova"/>. Each monomer consists of a single polypeptide chain with 331 amino acid residues. Each polypeptide chain has 13 alpha helices and 15 beta chains. The active site on each monomer is a deep, highly charged cleft made up seven segments of polypeptide chain, which is located away from the other monomer, and is unaffected by dimerization <ref name = "Byres"/>. An ATP binding polypeptide segment called the P loop is also located near the active site <ref name = "Byres"/>. A total of 19 amino acid residue side chains are involved with substrate binding in the active site <ref name = "Byres"/>. | |||
<Structure load= 2hk3 size='400' frame='true' align='left' caption='Fig 2: Active site of MDD' scene='Insert optional scene name here' /> | <Structure load= 2hk3 size='400' frame='true' align='left' caption='Fig 2: Active site of MDD' scene='Insert optional scene name here' /> | ||
[[Image:Trial_1.png|thumb|Caption 1]] | [[Image:Trial_1.png|thumb|Caption 1]] | ||