Plastocyanin structure

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August undefined, 2024

Webbion is bound to cysteine, methionine, and, of course histidine residues. I found the acidic residues to be located nearest to the solvent-exposed active site Histidine residues and the total number of acidic residues is smaller. The structure of this protein is essentially built for electron transfer, with the acidic patch and the hydrophobic patch surrounding … WebbTo compare cadmium-substituted plastocyanin with copper plastocyanin, the 1 H-NMR spectra of CuI-, CuII- and Cd-plastocyanin from pea have been analyzed. Full assignments of the spectra of CuI-and Cd-plastocyanin indicate chemical shift differences up to 1 ppm. The affected protons are located in the four loops that surround the Cu site.

蓝铜蛋白结构与光谱性质的关系,Journal of the American Chemical …

WebbThe crystal structure of the 'blue' copper protein plastocyanin from the cyanobacterium Phormidium laminosum has been solved and refined using 2.8 A X--ray data. P. … Webb13 apr. 2024 · 3.The article structure is too wordy, and there is no comprehensive discussion throughout the texts. Author Response. ... membrane protease controls the abundance of a CopY-type response regulator to enable a switch between the expression of plastocyanin and cytochrome c6 (Garcia-Canas et al PNAS 118(2024). hereditary head scene

Plastocyanin - Wikipedia

Webb10 apr. 2024 · We prove this by comparing cyanobacteria and eukaryotic algae in cell size and structure, genome size, size of genome-scale metabolic ... cyanobacteria have two electron transporters that evolved separately: copper-dependent plastocyanin (PC) and iron-dependent cytochrome c 6 (Cytc 6). Distinct in the primary sequence and ... Webb1 dec. 1996 · The interacting N-terminal helix lines up six lysines on one side which may guide a fast one-dimensional diffusion of plastocyanin and provide the electrostatic attraction at the attachment site, in addition to the hydrophobic interaction in the area where the electron is transferred to P700 in the reaction center of photosystem I. WebbMultilevel calculations involving density functional theory and molecular mechanical potentials are used to predict both the geometric and electronic structure of the active sites of azurin, plastocyanin and stellacyanin and to estimate the relative redox potentials of these three proteins. matthew lister perth

Plastocyanin, an electron-transfer protein SpringerLink

Plastocyanin - an overview ScienceDirect Topics

WebbMCB*4050 Protein and Nucleic Acid Structure Midterm Exam (Practice) Fall Semester October 19 th, 2024 2:30 to 3:45 p.m. MACK 121 Examiner: Dr. Matthew Kimber Instructions: Please record all your answers in the examination booklet(s) provided. Answers written in the test book will not be marked. Answer questions in pen using any … matthew listerWebbPlastocyanin is an important copper-containing protein involved in electron-transfer. The protein is monomeric, with a molecular weight around 10,500 Da, and 99 amino acids in most vascular plants. It is a member of plastocyanin family of copper binding proteins. Better weighing performance in 6 easy steps matthew lister grainger plc

"Webb3 feb. 2024 · Structure of plant PSI-plastocyanin complex reveals strong hydrophobic interactions Ido Caspy , Mariia Fadeeva , Sebastian Kuhlgert , Anna Borovikova-Sheinker , … " - Plastocyanin structure

Plastocyanin structure

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WebbThe NMR solution structure of oxidized plastocyanin from the cyanobacterium Synechocystis PCC6803 is here reported. The protein contains paramagnetic copper(II), whose electronic relaxation times are quite unfavorable for NMR solution studies. Webb14 nov. 2016 · In plastocyanin this band is very weak, but in the closely related proteins cucumber basic protein and nitrite reductase its intensity increases. 12, 25 This change can be associated with changes in the structure of the active site, 10 and other work has shown the excitation energy of the intense LMCT band correlate strongly with the copper …

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Webb1 apr. 1994 · The crystal structure of a ternary protein complex has been determined at 2.4 angstrom resolution. The complex is composed of three electron transfer proteins from Paracoccus denitrificans, the quinoprotein methylamine dehydrogenase, the blue copper protein amicyanin, and the cytochrome c 551i. WebbPlastocyanin is a 10 kD blue copper protein which is located in the lumen of the thylakoid where it functions as a mobileelectron carrier shuttling electrons from cytochromef to P700 in Photosystem I. PC is a typical β-barrel protein containing a single copper center which is ligated to two histidines, a methionine and a cysteine in a distorted …

WebbProtein Supersecondary Structures - Feb 05 2024 Algae for Biofuels and Energy - Dec 09 2024 Microalgae are one of the most studied potential sources of biofuels and bioenergy. This book covers the key ... the light-induced plastocyanin: ferredoxin oxidoreductase. The … Webb三种菱形 1 型蓝铜蛋白、亚硝酸还原酶、假天青蛋白和黄瓜碱性蛋白的电子光谱已通过从头算多构型二阶微扰理论（CASPT2 方法）进行了研究。已计算出六个最低激发并指定其误差小于 1800 cm-1。基态中的单占轨道在铜离子和半胱氨酸配体的硫醇基之间形成强共价反键，具有 σ 和 π 特征。

Webb1 okt. 1999 · Here we report the structural comparison between the fern plastocyanin and other plastocyanins from cyanobacteria, green algae, and other higher plants, together with the structural changes of fern plastocyanin upon reduction. Glu59 hydrogen bonds to the OH of Tyr83, which is thought to be a possible conduit for electrons, in the oxidized state. Webb15 mars 1998 · Ensemble of the ten lowest energy structures of the plastocyanin–cytochrome f complex. The positions of plastocyanin (Cα trace, in purple) …

WebbPlastocyanin is one of the best characterized of the photosynthetic electron transfer proteins. Since the determination of the structure of poplar plastocyanin in 1978, the …

Webb9 dec. 2024 · In both the linear and cyclic electron transport, the sole electron source for PSI is the b6f complex, which is mediated by plastocyanin or cytochrome c6. Plastocyanin is a luminal mobile... matthew listman facebookWebbSome properties of the blue copper protein plastocyanin from the green alga Scenedesmus have been investigated and compared with that from spinach, including amino acid composition, isoelectric point and copper content. The protein from Scenedesmus contains two, that from spinach four copper atoms per molecular weight of 40000. hereditary health conditions dogsWebb2 apr. 1997 · The crystal structure of plastocyanin from spinach has been determined using molecular replacement, with the structure of plastocyanin from poplar as a search … hereditary headWebbMolecular dynamics simulation and essential dynamics study of mutated plastocyanin: structural, dynamical and functional effects of a disulfide bridge insertion at the protein … matthew listman isuWebbKinetics and Mechanism of the Acid Transition of the Active Site in Plastocyanin†. DOI: 10.1021/bi701446u. PMID: 18020375. Modi S et al. (1992), Biochim Biophys Acta, 1102, 85-90. Reactivity of cytochromes c and f with mutant forms of spinach plastocyanin. DOI: 10.1016/0005-2728 (92)90068-d. PMID: 1324731. matthew listiyoWebbEven though plastocyanin has superseded cytochrome c 6 along evolution, plants contain a modified cytochrome c 6, the so called cytochrome c 6A, whose function still remains unknown. In this article, we describe a second cytochrome c 6 (the so called cytochrome c 6-like protein), which is found in some cyanobacteria but is phylogenetically more related … hereditary headless sceneWebbSpectroscopic properties, amino acid sequence, electron transfer kinetics, and crystal structures of the oxidized (at 1.7 Å resolution) and reduced form (at 1.8 Å resolution) of a novel plastocyanin from the fern Dryopteris crassirhizoma are presented. Kinetic studies show that the reduced form ofDryopteris plastocyanin remains redox-active at low pH, … matthew lister nanny