2je2: Difference between revisions
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[[Image:2je2. | [[Image:2je2.jpg|left|200px]]<br /><applet load="2je2" size="450" color="white" frame="true" align="right" spinBox="true" | ||
<applet load="2je2" size="450" color="white" frame="true" align="right" spinBox="true" | |||
caption="2je2, resolution 1.80Å" /> | caption="2je2, resolution 1.80Å" /> | ||
'''CYTOCHROME P460 FROM NITROSOMONAS EUROPAEA- PROBABLE NONPHYSIOLOGICAL OXIDIZED FORM'''<br /> | '''CYTOCHROME P460 FROM NITROSOMONAS EUROPAEA- PROBABLE NONPHYSIOLOGICAL OXIDIZED FORM'''<br /> | ||
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==About this Structure== | ==About this Structure== | ||
2JE2 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Nitrosomonas_europaea Nitrosomonas europaea] with PO4 and HEC as [http://en.wikipedia.org/wiki/ligands ligands]. | 2JE2 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Nitrosomonas_europaea Nitrosomonas europaea] with PO4 and HEC as [http://en.wikipedia.org/wiki/ligands ligands]. Known structural/functional Site: <scene name='pdbsite=AC1:Po4 Binding Site For Chain A'>AC1</scene>. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=2JE2 OCA]. | ||
==Reference== | ==Reference== | ||
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[[Category: metal binding protein]] | [[Category: metal binding protein]] | ||
''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on | ''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Tue Dec 18 20:03:02 2007'' | ||
Revision as of 20:53, 18 December 2007
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CYTOCHROME P460 FROM NITROSOMONAS EUROPAEA- PROBABLE NONPHYSIOLOGICAL OXIDIZED FORM
OverviewOverview
We have determined the 1.8 A X-ray crystal structure of a monoheme c-type, cytochrome, cytochrome P460, from Nitrosomonas europea. The chromophore, possesses unusual spectral properties analogous to those of the catalytic, heme P460 of hydroxylamine oxidoreductase (HAO), the only known heme in, biology to withdraw electrons from an iron-coordinated substrate. The, analysis reveals a homodimeric structure and elucidates a new c-type, cytochrome fold that is predominantly beta-sheet. In addition to the two, cysteine thioether links to the porphyrin typical of c-type hemes, there, is a third proteinaceous link involving a conserved lysine. The covalent, bond is between the lysine side-chain nitrogen and the 13'-meso carbon of, the heme, which, following cross-link formation, is sp3-hybridized, demonstrating the loss of conjugation at this position within the, porphyrin. The structure has implications for the analogous tyrosine-heme, meso carbon cross-link observed in HAO.
About this StructureAbout this Structure
2JE2 is a Single protein structure of sequence from Nitrosomonas europaea with PO4 and HEC as ligands. Known structural/functional Site: . Full crystallographic information is available from OCA.
ReferenceReference
The Crystal Structure of Cytochrome P460 of Nitrosomonas europaea Reveals a Novel Cytochrome Fold and Heme-Protein Cross-link(,)., Pearson AR, Elmore BO, Yang C, Ferrara JD, Hooper AB, Wilmot CM, Biochemistry. 2007 Jul 17;46(28):8340-9. Epub 2007 Jun 21. PMID:17583915
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