Related ArticlesThe identification of cation-binding domains on the surface of microsomal cytochrome b5 using 1H-NMR paramagnetic difference spectroscopy.
Eur J Biochem. 1992 Jan 15;203(1-2):211-23
Authors: Whitford D
One-dimensional and two-dimensional 1H-NMR methods and paramagnetic difference spectroscopy have defined cation binding domains on the surface of the tryptic fragment of microsomal cytochrome b5. The addition of tris(ethylenediamine) chromium(III) [Cr(en)3(3+)] to solutions of ferricytochrome b5 reveals at least three distinct sites on the surface of the protein to which highly charged cations may bind (20 mM phosphate pH 7.0, T = 300 K). Surprisingly only one of these sites is located close to the haem edge region of the protein, whilst the remaining two sites are more remote. Site I contains the exposed haem C13 propionate and a series of carboxylate residues that includes glutamates 37, 38, 43, 44, and 48. Sites II and III are located away from the haem edge region and are delineated by the broadening of aromatic resonances of histidines 26 and 80. Further investigation of the interaction between Cr(en)3(3+) and cytochrome b5 using two-dimensional double-quantum-filtered correlated spectroscopy shows that resonances assigned to Glu59, Asp60, Glu79, Asp82 and Asp83 are broadened with the distribution of these charged side chains correlating with the relaxation broadening observed from one-dimensional experiments. In a binary complex with ferricytochrome c, Cr(en3(3+) broadens many cytochrome b45 resonances including the haem propionates, His26, Ala54, Thr55 and His80. Although the pattern of line-broadening of resonances at sites II and III is unaltered by complex formation, cytochrome c shields residues at site I, the haem edge site. The results indicate that the interaction between cytochrome b5 and c in a binary complex involves multiple protein configurations.
[NMR paper] Identification of the DNA binding surface of H-NS protein from Escherichia coli by he
Identification of the DNA binding surface of H-NS protein from Escherichia coli by heteronuclear NMR spectroscopy.
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FEBS Lett. 1999 Jul 16;455(1-2):63-9
Authors: Shindo H, Ohnuki A, Ginba H, Katoh E, Ueguchi C, Mizuno T, Yamazaki T
The DNA binding domain of H-NS protein was studied with various N-terminal deletion mutant proteins and identified by gel retardation assay and heteronuclear 2D- and 3D-NMR...
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[NMR paper] Probing the backbone dynamics of oxidized and reduced rat microsomal cytochrome b5 vi
Probing the backbone dynamics of oxidized and reduced rat microsomal cytochrome b5 via 15N rotating frame NMR relaxation measurements: biological implications.
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Biochemistry. 1998 Sep 1;37(35):12320-30
Authors: Banci L, Bertini I, Cavazza C, Felli IC, Koulougliotis D
Rotating frame 15N relaxation NMR experiments have been performed to study the local mobility of the...
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NMR structure note: oxidized microsomal human cytochrome b5.
NMR structure note: oxidized microsomal human cytochrome b5.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--production.springer.de-OnlineResources-Logos-springerlink.gif Related Articles NMR structure note: oxidized microsomal human cytochrome b5.
J Biomol NMR. 2010 Aug;47(4):289-95
Authors: Nunez M, Guittet E, Pompon D, van Heijenoort C, Truan G
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[NMR paper] Identification by NMR of the binding surface for the histidine-containing phosphocarr
Identification by NMR of the binding surface for the histidine-containing phosphocarrier protein HPr on the N-terminal domain of enzyme I of the Escherichia coli phosphotransferase system.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--pubs.acs.org-images-acspubs.jpg Related Articles Identification by NMR of the binding surface for the histidine-containing phosphocarrier protein HPr on the N-terminal domain of enzyme I of the Escherichia coli phosphotransferase system.
Biochemistry. 1997 Apr 15;36(15):4393-8
Authors: Garrett DS, Seok YJ,...
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[NMR paper] Identification by NMR of the binding surface for the histidine-containing phosphocarr
Identification by NMR of the binding surface for the histidine-containing phosphocarrier protein HPr on the N-terminal domain of enzyme I of the Escherichia coli phosphotransferase system.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--pubs.acs.org-images-acspubs.jpg Related Articles Identification by NMR of the binding surface for the histidine-containing phosphocarrier protein HPr on the N-terminal domain of enzyme I of the Escherichia coli phosphotransferase system.
Biochemistry. 1997 Apr 15;36(15):4393-8
Authors: Garrett DS, Seok YJ,...
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[NMR paper] Solution structure of the B form of oxidized rat microsomal cytochrome b5 and backbon
Solution structure of the B form of oxidized rat microsomal cytochrome b5 and backbone dynamics via 15N rotating-frame NMR-relaxation measurements. Biological implications.
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Eur J Biochem. 1999 Mar;260(2):347-54
Authors: ...
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[NMR paper] Identification of the single-stranded DNA binding surface of the transcriptional coac
Identification of the single-stranded DNA binding surface of the transcriptional coactivator PC4 by NMR.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--highwire.stanford.edu-icons-externalservices-pubmed-standard-jbc_full_free.gif Related Articles Identification of the single-stranded DNA binding surface of the transcriptional coactivator PC4 by NMR.
J Biol Chem. 1999 Feb 5;274(6):3693-9
Authors: Werten S, Wechselberger R, Boelens R, van der Vliet PC, Kaptein R
The C-terminal domain of the eukaryotic transcriptional cofactor PC4...
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NMR structure note: oxidized microsomal human cytochrome b5
NMR structure note: oxidized microsomal human cytochrome b5
Content Type Journal Article
DOI 10.1007/s10858-010-9428-6
Authors
Marcela Nunez, CNRS Centre de Génétique Moléculaire Av. de la Terrasse Gif-sur-Yvette 91198 France
Eric Guittet, CNRS Institut de Chimie de Substances Naturelles av. de la Terrasse Gif-sur-Yvette 91198 France
Denis Pompon, CNRS Centre de Génétique Moléculaire Av. de la Terrasse Gif-sur-Yvette 91198 France