Ian R. Peterson

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Langmuir-Schaefer (LS) monolayer films of fullerene-bis-[4-diphenylamino-4' '-(N-ethyl-N-2' ''-ethyl)amino-1,4-diphenyl-1,3-butadiene] malonate, 1, sandwiched between two Au electrodes, exhibit pronounced current asymmetries (rectification) between positive and negative bias at room temperature, with no decay of the rectification after several cycles. The(More)
The iodination of proteins remains a useful tool in biochemistry for radiolabelling. However, chemical or enzymatic iodination is difficult to control and can give deleterious polyiodination. Previously, we have shown that electrooxidation with nitrite is a rapid method for the selective nitration of tyrosine residues in proteins. In principle, it should be(More)
In this paper we report the successful use of a non-metallic electrode material, boron-doped diamond (BDD), for the anodic electro-oxidative modification of hen egg white lysozyme (HEWL). Platinum electrodes can give rise to loss of activity of HEWL in electrosynthetic studies, whereas activity is retained on boron-doped diamond which is proposed as an(More)
We report the functional reconstitution of nicotinic acetylcholine receptors into gel-protected bilayer lipid membranes using two different methods. In the first case, reconstitution was achieved by direct membrane formation from an emulsion of glycerol monooleate, hexane, and a membrane receptor extract. In the second case, incorporation was achieved via(More)
2014 The profiles of the transmission diffraction spots from a Langmuir-Blodgett film of aliphatic chain compound are derived from three plausible models of molecular organisation : a polycrystalline phase with long-range orientational order; a paracrystal possessing a density of point defects which do not interrupt the lattice rows ; and a Nelson and(More)
Earlier findings on electronitration of hen egg-white lysozyme demonstrated a product which was mononitrated at Tyr23, by ion-exchange chromatography, absorbance at 430 nm, dithionite reduction, and Edman sequencing of a nitrated proteolytic peptide. However, the whole protein was not sequenced; therefore, although the enzyme remained active upon nitration,(More)
WC pre.~nt direct cxpcri.mcnlal ruidcnsc for :hc binding oi an electron by [lx dipok moment of 3 neutral molcculc. The pho~w!ccrr~n qxc:n:m of LiCIIVZS nblG.cd and srulyzcd to dcrerminc that ihc binding energy OF the elccxon in rhe UCIion is (0.61 2 0.07,j CL’. This rcwl\ is 3n order of magGcudc smdlcr than rhe predictions of rhc kxcd dipole theoretical(More)
This paper revisits the little-known Gibbs-Rodrigues representation of rotations in a three-dimensional space and demonstrates a set of algorithms for handling it. In this representation the rotation is itself represented as a three-dimensional vector. The vector is parallel to the axis of rotation and its three components transform covariantly on change of(More)
In producing a method for selective protein nitration, we previously demonstrated the electrochemical nitration of hen egg white lysozyme to be at Tyr23 initially, followed by bisnitration at Tyr20, but with no trisnitration at Tyr53. The nitration site was determined by sequencing a tryptic peptide that included Tyr23 and Tyr20, but possible effects on(More)
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