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Page 1
Fundamental signatures of short- and long-range electron transfer for the blue copper protein azurin at Au/SAM junctions.
Khoshtariya DE, Dolidze TD, Shushanyan M, Davis KL, Waldeck DH, van Eldik R. Khoshtariya DE, et al. Proc Natl Acad Sci U S A. 2010 Feb 16;107(7):2757-62. doi: 10.1073/pnas.0910837107. Epub 2010 Feb 1. Proc Natl Acad Sci U S A. 2010. PMID: 20133645 Free PMC article.
The blue copper protein from Pseudomonas aeruginosa, azurin, immobilized at gold electrodes through hydrophobic interaction with alkanethiol self-assembled monolayers (SAMs) of the general type [-S-(CH(2))(n)-CH(3)] (n = 4, 10, and 15) was employed to gain detailed insight …
The blue copper protein from Pseudomonas aeruginosa, azurin, immobilized at gold electrodes through hydrophobic interaction with alka …
Electron transfer with azurin at Au-SAM junctions in contact with a protic ionic melt: impact of glassy dynamics.
Khoshtariya DE, Dolidze TD, Tretyakova T, Waldeck DH, van Eldik R. Khoshtariya DE, et al. Phys Chem Chem Phys. 2013 Oct 21;15(39):16515-26. doi: 10.1039/c3cp51896e. Epub 2013 Aug 13. Phys Chem Chem Phys. 2013. PMID: 23942940
Gold electrodes were coated with alkanethiol SAM-azurin (Az, blue cupredoxin) assemblies and placed in contact with a water-doped and buffered protic ionic melt as the electrolyte, choline dihydrogen phosphate ([ch][dhp]). ...
Gold electrodes were coated with alkanethiol SAM-azurin (Az, blue cupredoxin) assemblies and placed in contact with a water-do …
Mimicking protein-protein electron transfer: voltammetry of Pseudomonas aeruginosa azurin and the Thermus thermophilus Cu(A) domain at omega-derivatized self-assembled-monolayer gold electrodes.
Fujita K, Nakamura N, Ohno H, Leigh BS, Niki K, Gray HB, Richards JH. Fujita K, et al. J Am Chem Soc. 2004 Nov 3;126(43):13954-61. doi: 10.1021/ja047875o. J Am Chem Soc. 2004. PMID: 15506756
The electron transfer (ET) rate vs distance behavior of azurin and Cu(A) is independent of the omega-derivatized alkanethiol SAM headgroups. Strikingly, only wild-type azurin and mutants containing Trp48 give voltammetric responses: based on modeling, we sugg …
The electron transfer (ET) rate vs distance behavior of azurin and Cu(A) is independent of the omega-derivatized alkanethiol SAM …
Covalent Linkages of Molecules and Proteins to Si-H Surfaces Formed by Disulfide Reduction.
Dief EM, Vogel YB, Peiris CR, Le Brun AP, Gonçales VR, Ciampi S, Reimers JR, Darwish N. Dief EM, et al. Langmuir. 2020 Dec 15;36(49):14999-15009. doi: 10.1021/acs.langmuir.0c02391. Epub 2020 Dec 3. Langmuir. 2020. PMID: 33271017
Cyclic disulfide can be spontaneously reduced to form complete monolayers in 1 h, and the reduction can be catalyzed electrochemically to form full surface coverages within 15 min. In contrast, the kinetics of SAM formation of the cyclic disulfide molecule on Au was found …
Cyclic disulfide can be spontaneously reduced to form complete monolayers in 1 h, and the reduction can be catalyzed electrochemically to fo …
Understanding the mechanism of short-range electron transfer using an immobilized cupredoxin.
Monari S, Battistuzzi G, Bortolotti CA, Yanagisawa S, Sato K, Li C, Salard I, Kostrz D, Borsari M, Ranieri A, Dennison C, Sola M. Monari S, et al. J Am Chem Soc. 2012 Jul 25;134(29):11848-51. doi: 10.1021/ja303425b. Epub 2012 Jul 16. J Am Chem Soc. 2012. PMID: 22788731
The hydrophobic patch of azurin (AZ) from Pseudomonas aeruginosa is an important recognition surface for electron transfer (ET) reactions. ...This mechanism therefore may be utilized for short-distance ET irrespective of the type of metal center, the surface electrostatic …
The hydrophobic patch of azurin (AZ) from Pseudomonas aeruginosa is an important recognition surface for electron transfer (ET) react …
Distance dependence of electron transfer kinetics for azurin protein adsorbed to monolayer protected nanoparticle film assemblies.
Vargo ML, Gulka CP, Gerig JK, Manieri CM, Dattelbaum JD, Marks CB, Lawrence NT, Trawick ML, Leopold MC. Vargo ML, et al. Langmuir. 2010 Jan 5;26(1):560-9. doi: 10.1021/la9020367. Langmuir. 2010. PMID: 19678633
The distance dependence and kinetics of the heterogeneous electron transfer (ET) reaction for the redox protein azurin adsorbed to an electrode modified with a gold nanoparticle film are investigated using cyclic voltammetry. ...Voltammetric analysis of the ET kinetics for …
The distance dependence and kinetics of the heterogeneous electron transfer (ET) reaction for the redox protein azurin adsorbed to an …
Stepwise nitrosylation of the nonheme iron site in an engineered azurin and a molecular basis for nitric oxide signaling mediated by nonheme iron proteins.
Tian S, Fan R, Albert T, Khade RL, Dai H, Harnden KA, Hosseinzadeh P, Liu J, Nilges MJ, Zhang Y, Moënne-Loccoz P, Guo Y, Lu Y. Tian S, et al. Chem Sci. 2021 Mar 31;12(19):6569-6579. doi: 10.1039/d1sc00364j. Chem Sci. 2021. PMID: 34040732 Free PMC article.
Here, we report the realization of stepwise nitrosylation of a mononuclear nonheme iron site in an engineered azurin under such conditions. Through tuning the number of nitric oxide equivalents and reaction time, controlled formation of {FeNO}(7) and {Fe(NO)(2)}(9) species …
Here, we report the realization of stepwise nitrosylation of a mononuclear nonheme iron site in an engineered azurin under such condi …
Electron Tunneling through Pseudomonas aeruginosa Azurins on SAM Gold Electrodes.
Yokoyama K, Leigh BS, Sheng Y, Niki K, Nakamura N, Ohno H, Winkler JR, Gray HB, Richards JH. Yokoyama K, et al. Inorganica Chim Acta. 2008 Mar 3;361(4):1095-1099. doi: 10.1016/j.ica.2007.08.022. Inorganica Chim Acta. 2008. PMID: 19262679 Free PMC article.
Robust voltammetric responses were obtained for wild-type and Y72F/H83Q/Q107H/Y108F azurins adsorbed on CH(3)(CH(2))(n)SH:HO(CH(2))(m)SH (n=m=4,6,8,11; n=13,15 m=11) self-assembled monolayer (SAM) gold electrodes in acidic solution (pH 4.6) at high ionic strengths. …
Robust voltammetric responses were obtained for wild-type and Y72F/H83Q/Q107H/Y108F azurins adsorbed on CH(3)(CH(2))(n)SH:HO(CH(2))(m …
Synthesis, assembly, and characterization of monolayer protected gold nanoparticle films for protein monolayer electrochemistry.
Doan TT, Freeman MH, Schmidt AR, Nguyen ND, Leopold MC. Doan TT, et al. J Vis Exp. 2011 Oct 4;(56):3441. doi: 10.3791/3441. J Vis Exp. 2011. PMID: 21989124 Free PMC article.
MPC films are assembled on SAM modified gold electrode interfaces by using a "dip cycle" method of alternating MPC layers and dithiol linking molecules. ...During film assembly, manipulation of the MPC ligand protection as well as the interparticle linkage mechanism allow …
MPC films are assembled on SAM modified gold electrode interfaces by using a "dip cycle" method of alternating MPC layers and dithiol …
Transparent gold as a platform for adsorbed protein spectroelectrochemistry: investigation of cytochrome c and azurin.
Ashur I, Schulz O, McIntosh CL, Pinkas I, Ros R, Jones AK. Ashur I, et al. Langmuir. 2012 Apr 3;28(13):5861-71. doi: 10.1021/la300404r. Epub 2012 Mar 22. Langmuir. 2012. PMID: 22369317
We report an approach for unmediated, protein spectroelectrochemistry that overcomes this limitation by adsorbing protein directly to thiol self-assembled monolayer (SAM) modified, thin (10 nm), semitransparent gold. The viability of the method is demonstrated with two div …
We report an approach for unmediated, protein spectroelectrochemistry that overcomes this limitation by adsorbing protein directly to thiol …
14 results