Sandbox UC 11
The structure of a complex containing the homeodomain repressor protein MATalpha2 and the MADS-box transcription factor MCM1 bound to DNA has been determined by X-ray crystallography at 2.25 A resolution. MtrF is a cell surface cytochrome on the Gram-negative bacteria known as Shewanella oneidensis.[1] MtrF is involved with shuttling electrons across its (S. oneidensis) outer surface. MtrF has several homologues, MtrC and the protein OmcA. These three different proteins are thought to be replaceable with one another in deletion mutation experiments.[1]
StructureThrough the structure of this oligomer that was obtained by crystallography, we can see that HDAC9 is kept even after MEF2 binding to the chromosome. We can also easily observe a very well near the DNA binding site of MEF2.
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Directed evolution and Colicin7/Immunity-proteins complexes[2]Directed evolution and Colicin7/Immunity-proteins complexes[2]
of the immunity protein 9 (Im9, 1bxi, colored yellow), evolved variant R12-2 (lime), and immunity protein 7 (Im7, colored blue, 7cei) reveals their structural identity. However, when the immunity proteins-bound , they demonstrate somewhat different picture. <quiz display= simple> {¿Cuántas hélices alfa se encuentran en esta estructura?| Type= "[]"} - Ninguno + One - Cuatro </ Quiz> MCM1 bound to DNA [3] |
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- ↑ 1.0 1.1 Fotinou C, Emsley P, Black I, Ando H, Ishida H, Kiso M, Sinha KA, Fairweather NF, Isaacs NW. The crystal structure of tetanus toxin Hc fragment complexed with a synthetic GT1b analogue suggests cross-linking between ganglioside receptors and the toxin. J Biol Chem. 2001 Aug 24;276(34):32274-81. Epub 2001 Jun 19. PMID:11418600 doi:10.1074/jbc.M103285200
- ↑ Levin KB, Dym O, Albeck S, Magdassi S, Keeble AH, Kleanthous C, Tawfik DS. Following evolutionary paths to protein-protein interactions with high affinity and selectivity. Nat Struct Mol Biol. 2009 Oct;16(10):1049-55. Epub 2009 Sep 13. PMID:19749752 doi:10.1038/nsmb.1670
- ↑ MCM1 bound to DNA
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| 1mnm, resolution 2.25Å () | |||||||||
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| Resources: | FirstGlance, OCA, RCSB, PDBsum | ||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||
Additional LiteratureAdditional Literature
- ↑ Kleanthous C, Kuhlmann UC, Pommer AJ, Ferguson N, Radford SE, Moore GR, James R, Hemmings AM. Structural and mechanistic basis of immunity toward endonuclease colicins. Nat Struct Biol. 1999 Mar;6(3):243-52. PMID:10074943 doi:http://dx.doi.org/10.1038/6683
- ↑ Levin KB, Dym O, Albeck S, Magdassi S, Keeble AH, Kleanthous C, Tawfik DS. Following evolutionary paths to protein-protein interactions with high affinity and selectivity. Nat Struct Mol Biol. 2009 Oct;16(10):1049-55. Epub 2009 Sep 13. PMID:19749752 doi:10.1038/nsmb.1670
External ResourcesExternal Resources
- Yahoo news coverage of luciferase studies funded research for military applications
- Luciferase at Wikipedia
- Luciferase: June 2006 Molecule of the Month as part of the series of tutorials that are at the RCSB Protein Data Bank and written by
- Lipase, the main article in Proteopedia.
- Molecular Playground/Pancreatic Lipase
- Lipase in Wikipedia