1ufj: Difference between revisions
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|PDB= 1ufj |SIZE=350|CAPTION= <scene name='initialview01'>1ufj</scene>, resolution 1.60Å | |PDB= 1ufj |SIZE=350|CAPTION= <scene name='initialview01'>1ufj</scene>, resolution 1.60Å | ||
|SITE= | |SITE= | ||
|LIGAND= <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene> and <scene name='pdbligand=CZM: | |LIGAND= <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene> and <scene name='pdbligand=CZM:'N,N'-BIS-(2-HYDROXY-3-METHYL-BENZYLIDENE)-BENZENE-1,2-DIAMINE''>CZM</scene> | ||
|ACTIVITY= | |ACTIVITY= | ||
|GENE= | |GENE= | ||
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[[Category: schiff base]] | [[Category: schiff base]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 23 13:51:52 2008'' | ||
Revision as of 14:51, 23 March 2008
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Crystal Structure of an Artificial Metalloprotein:Fe(III)(3,3'-Me2-salophen)/apo-A71G Myoglobin
OverviewOverview
Apo-myoglobin (apo-Mb) and apo-A71GMb were successfully reconstituted with FeIII(salophen) (1) (salophen = N,N'-bis(salicylidene)-1,2-phenilenediamine), Fe(III)(3,3'-Me2-salophen) (2), and FeIII(5,5'-t-Bu2-salophen) (3). The crystal structure of 2.apo-A71GMb shows the tight binding of the complex in the Mb cavity, while in wild-type apo-Mb it is highly disordered due to the steric repulsion with Ala71. Furthermore, the structure of 2.apo-A71GMb suggests a possible accommodation of a small substrate in the cavity. In fact, the cyanide association rate constant of 2.apo-A71GMb is 216-fold larger compared to that of 2.apo-Mb. These results provide us principles for the noncovalent fixation of synthetic metal cofactors at the desired positions in protein matrixes.
About this StructureAbout this Structure
1UFJ is a Single protein structure of sequence from Physeter catodon. Full crystallographic information is available from OCA.
ReferenceReference
Crystal structures of artificial metalloproteins: tight binding of FeIII(Schiff-Base) by mutation of Ala71 to Gly in apo-myoglobin., Ueno T, Ohashi M, Kono M, Kondo K, Suzuki A, Yamane T, Watanabe Y, Inorg Chem. 2004 May 3;43(9):2852-8. PMID:15106972
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