Related ArticlesIdentification of cysteine ligands in metalloproteins using optical and NMR spectroscopy: cadmium-substituted rubredoxin as a model [Cd(CysS)4]2- center.
Protein Sci. 1993 Oct;2(10):1756-64
Authors: Henehan CJ, Pountney DL, Zerbe O, Vasák M
Optical and NMR methods are presented for the identification of cysteine ligands in Cd-substituted metalloproteins, in particular those containing zinc-fingerlike motifs, using Cd-substituted Desulfovibrio gigas rubredoxin (Cd-Rd) as a model [Cd(CysS)4]2- complex. The 113Cd NMR spectrum of Cd-Rd contains a single 113Cd resonance with a chemical shift position (723.6 ppm) consistent with tetrathiolate metal coordination. The proton chemical shifts of the four cysteine ligands were obtained from one-dimensional heteronuclear (1H-113Cd) multiple quantum coherence (HMQC) and total coherence spectroscopy (TOCSY)-relayed HMQC experiments. In addition, sequential assignments were made for two short cysteine-containing stretches of the polypeptide chain using a combination of homonuclear proton correlated spectroscopy, TOCSY, and nuclear Overhauser effect spectroscopy experiments, enabling sequence-specific heteronuclear 3J(1H beta-113Cd) coupling constants for each cysteine to be determined. The magnitude of these couplings (0-38 Hz) follows a Karplus-like dependence with respect to the H beta-C beta-S gamma-Cd dihedral angles, inferred from the crystal structure of the native protein. The difference absorption envelope (Cd-Rd vs. apo-Rd) reveals three distinct transitions with Gaussian-resolved maxima located at 213, 229, and 245 nm, which are paralleled by dichroic features in the corresponding difference CD and magnetic CD spectra. Based on the optical electronegativity theory of Jørgensen, the lowest energy transition has been attributed to a CysS-Cd(II) charge-transfer excitation (epsilon 245, 26,000 M-1 cm-1) with a molar extinction coefficient per cysteine of 6,500 M-1 cm-1.(ABSTRACT TRUNCATED AT 250 WORDS)
NMR Studies of Metalloproteins.
NMR Studies of Metalloproteins.
NMR Studies of Metalloproteins.
Top Curr Chem. 2011 Aug 2;
Authors: Li H, Sun H
Metalloproteins represent a large share of the proteomes, with the intrinsic metal ions providing catalytic, regulatory, and structural roles critical to protein functions. Structural characterization of metalloproteins and identification of metal coordination features including numbers and types of ligands and metal-ligand geometry, and mapping the structural and dynamic changes upon metal binding are significant for understanding...
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[NMR paper] NMR structures of paramagnetic metalloproteins.
NMR structures of paramagnetic metalloproteins.
Related Articles NMR structures of paramagnetic metalloproteins.
Q Rev Biophys. 2005 May;38(2):167-219
Authors: Arnesano F, Banci L, Piccioli M
Metalloproteins represent a large share of the proteome and many of them contain paramagnetic metal ions. The knowledge, at atomic resolution, of their structure in solution is important to understand processes in which they are involved, such as electron transfer mechanisms, enzymatic reactions, metal homeostasis and metal trafficking, as well as...
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[NMR paper] Crystallization of the Bacillus subtilis RTP-DNA complex prepared using NMR spectrosc
Crystallization of the Bacillus subtilis RTP-DNA complex prepared using NMR spectroscopy.
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Acta Crystallogr D Biol Crystallogr. 2001 Mar;57(Pt 3):421-4
Authors: Vivian JP, Wilce JA, Hastings AF, Wilce MC
The replication terminator protein (RTP)-DNA complex of Bacillus subtilis is responsible for the arrest of DNA replication at terminator sites in the B. subtilis chromosome. The crystallization and preliminary diffraction data analysis...
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[NMR paper] PSEUDYANA for NMR structure calculation of paramagnetic metalloproteins using torsion
PSEUDYANA for NMR structure calculation of paramagnetic metalloproteins using torsion angle molecular dynamics.
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J Biomol NMR. 1998 Nov;12(4):553-7
Authors: Banci L, Bertini I, Cremonini MA, Gori-Savellini G, Luchinat C, Wüthrich K, Güntert P
The program DYANA, for calculation of solution structures of biomolecules with an algorithm based on simulated annealing by torsion angle dynamics, has been supplemented with a...
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[NMR paper] Establishing isostructural metal substitution in metalloproteins using 1H NMR, circul
Establishing isostructural metal substitution in metalloproteins using 1H NMR, circular dichroism, and Fourier transform infrared spectroscopy.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--www3.interscience.wiley.com-aboutus-images-wiley_interscience_pubmed_logo_FREE_120x27.gif http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--www.pubmedcentral.nih.gov-corehtml-pmc-pmcgifs-pubmed-pmc.gif Related Articles Establishing isostructural metal substitution in metalloproteins using 1H NMR, circular dichroism, and Fourier transform infrared spectroscopy.
...
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[NMR paper] Strategies of signal assignments in paramagnetic metalloproteins. An NMR investigatio
Strategies of signal assignments in paramagnetic metalloproteins. An NMR investigation of the thiocyanate adduct of the cobalt (II)-substituted human carbonic anhydrase II.
Related Articles Strategies of signal assignments in paramagnetic metalloproteins. An NMR investigation of the thiocyanate adduct of the cobalt (II)-substituted human carbonic anhydrase II.
J Magn Reson B. 1994 Jul;104(3):230-9
Authors: Bertini I, Jonsson BH, Luchinat C, Pierattelli R, Vila AJ
The title protein with MW 30,000 containing high-spin cobalt (II) has been...
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[NMR paper] Strategies of signal assignments in paramagnetic metalloproteins. An NMR investigatio
Strategies of signal assignments in paramagnetic metalloproteins. An NMR investigation of the thiocyanate adduct of the cobalt (II)-substituted human carbonic anhydrase II.
Related Articles Strategies of signal assignments in paramagnetic metalloproteins. An NMR investigation of the thiocyanate adduct of the cobalt (II)-substituted human carbonic anhydrase II.
J Magn Reson B. 1994 Jul;104(3):230-9
Authors: Bertini I, Jonsson BH, Luchinat C, Pierattelli R, Vila AJ
The title protein with MW 30,000 containing high-spin cobalt (II) has been...
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[NMR paper] Structure and dynamics of tosylchymotrypsin at pH 7 examined by tritium NMR spectrosc
Structure and dynamics of tosylchymotrypsin at pH 7 examined by tritium NMR spectroscopy.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--linkinghub.elsevier.com-ihub-images-PubMedLink.gif Related Articles Structure and dynamics of tosylchymotrypsin at pH 7 examined by tritium NMR spectroscopy.
Biochim Biophys Acta. 1994 Sep 21;1208(1):171-8
Authors: O'Connell TM, Gerig JT, Williams PG
3H-NMR spectroscopy of specifically tritiated and tritiated/deuterated derivatives of tosylchymotrypsin has been used to examine the behavior of the...
Identification of cysteine ligands in metalloproteins using optical and NMR spectrosc
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