標(biāo)題: Titlebook: ESR and NMR of Paramagnetic Species in Biological and Related Systems; Proceedings of the N Ivano Bertini,Russell S. Drago Conference proce [打印本頁] 作者: TUMOR 時間: 2025-3-21 19:26
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書目名稱ESR and NMR of Paramagnetic Species in Biological and Related Systems讀者反饋學(xué)科排名
作者: preservative 時間: 2025-3-21 22:12
. field has to be orthogonal to B. and it can be indifferently orthogonal or parallel to the microwave field in order to excite the allowed ENDOR transitions (Amj = ±1). The loop generating the ENDOR field B. can be 1) a true multi-turn r.f. coil or 2) a single-turn r.f. coil which can be built by m作者: 課程 時間: 2025-3-22 02:01 作者: 2否定 時間: 2025-3-22 06:25 作者: CAGE 時間: 2025-3-22 12:34 作者: Diastole 時間: 2025-3-22 14:49
Architecture and Dynamics of Isotopically Labelled Macromolecules by Nuclear Magnetic Resonance Spexample and, in this case, x-ray structural studies have resulted in an elaborate picture of the mechanism of the action of this class of enzymes (3,4); however, the detailed picture is not without its controversial elements (5).作者: Diastole 時間: 2025-3-22 20:26 作者: SNEER 時間: 2025-3-22 21:15 作者: drusen 時間: 2025-3-23 02:36
EPR Studies of Copper Centers in Proteins,ay distinct EPR parameters, depending on solvent access to the metal site and related to sp.cific protein ligands and mechanisms of electron transfer. The presence of multiple copper centers results in approximately 50% EPR-detectability and in ability to reduce 0. to H.0.作者: 審問 時間: 2025-3-23 06:23 作者: 裁決 時間: 2025-3-23 12:05 作者: Extemporize 時間: 2025-3-23 17:05 作者: 分開 時間: 2025-3-23 18:03 作者: locus-ceruleus 時間: 2025-3-23 23:22
The Binding of Divalent Ions to Transfer Nucleic Acids,phosphodiester bonds. The tRNAs which code for the various aminoacids seem to have similar structure. tRNA. from yeast has been investigated in most detail. Its secondary and tertiary structure are shown in Fig. 1.作者: 寬度 時間: 2025-3-24 03:28 作者: 不可侵犯 時間: 2025-3-24 10:25
Perception of electromagnetic waves: visionxample and, in this case, x-ray structural studies have resulted in an elaborate picture of the mechanism of the action of this class of enzymes (3,4); however, the detailed picture is not without its controversial elements (5).作者: fatty-acids 時間: 2025-3-24 13:16 作者: AVERT 時間: 2025-3-24 17:38 作者: 遣返回國 時間: 2025-3-24 19:32
Internalising Exile at Home and Away,ay distinct EPR parameters, depending on solvent access to the metal site and related to sp.cific protein ligands and mechanisms of electron transfer. The presence of multiple copper centers results in approximately 50% EPR-detectability and in ability to reduce 0. to H.0.作者: catagen 時間: 2025-3-25 02:57 作者: 縱欲 時間: 2025-3-25 07:05
Contact and Dipolar NMR Shifts: Theory and Applications,w-spin d. iron(III) hemin systems and on lanthanide ion complexes. Particular attention is paid to the theoretical and experimental aspects of the temperature dependencies. Mention is made of the use of lanthanide ions and cobalt(II) and substitutional or extrinsic shift probes for the study of biological macromolecules.作者: gospel 時間: 2025-3-25 10:35 作者: 眼界 時間: 2025-3-25 13:41 作者: 一小塊 時間: 2025-3-25 19:19
The Electronic Ground State of 3d Metal Ions with Respect to the ESR and NMR Experiment, orbitals should be known and the n electrons should be placed in these orbitals according to the Aufbau principle. The relative energies of the d orbitals depend on the metal-donor bond strength and on the symmetry around the metal ion (Fig. 1 and Table 1). Our interest in this chapter will be limited only to systems with net unpaired electrons.作者: Merited 時間: 2025-3-25 20:36 作者: 愉快么 時間: 2025-3-26 01:56 作者: craven 時間: 2025-3-26 06:16 作者: nugatory 時間: 2025-3-26 12:18
NMR spectroscopy, heat capacity measurements, etc. The interactions which occur in the couple are called exchange interactions. It will be the purpose of this short review to summarize the foundations of exchange interactions and to show how they can be relevant in the interpretation of the ESR and NMR spectra of paramagnetic complexes.作者: Slit-Lamp 時間: 2025-3-26 14:15
ramers systems recent findings on the MoFe protein of nitro-genase (the biological nitrogen fixing system) will be discussed. M?ssbauer and EPR studies of the MoFe protein (30 Fe atoms) have lead to a detailed spectroscopic characterization of two novel spin-coupled metal centers.作者: Solace 時間: 2025-3-26 18:20 作者: 細胞 時間: 2025-3-26 23:11
https://doi.org/10.1007/978-3-642-49819-0ion these results have yielded a resonable description of the electronic and geometric structure of the metal binding site. In accord with a recent crystallographic report, it is concluded that the site involves a cysteine sulfur, a methionine sulfur, and two imidazole nitrogens disposed in a pseudotetrahedral fashion.作者: Fibrillation 時間: 2025-3-27 01:26
ESR and NMR of Paramagnetic Species in Biological and Related Systems978-94-009-9524-6Series ISSN 1389-2185 作者: asthma 時間: 2025-3-27 09:11 作者: Headstrong 時間: 2025-3-27 10:33 作者: CREST 時間: 2025-3-27 15:54 作者: Flavouring 時間: 2025-3-27 20:35
https://doi.org/10.1007/978-3-662-36415-4enable us to obtain information on molecular motion in biological and related systems. The conventional use of nitroxides, saturation transfer spectroscopy and electron spin-electron spin interactions are the three topics discussed.作者: 都相信我的話 時間: 2025-3-28 00:15 作者: AVERT 時間: 2025-3-28 04:54
Nato Science Series C:http://image.papertrans.cn/e/image/300519.jpg作者: 捏造 時間: 2025-3-28 07:25 作者: 和平主義者 時間: 2025-3-28 14:20
978-94-009-9526-0D. Reidel Publishing Company, Dordrecht, Holland 1980作者: 發(fā)芽 時間: 2025-3-28 16:23
point of view. Besides a treatment of the various mechanisms inducing relaxation, it shall be shown how the latter are separated and interpreted. Some consideration will also be given to the implications of exchange processes on relaxation rates. Additionally, some of the more elaborate pulse techni作者: Dealing 時間: 2025-3-28 20:30 作者: 偽書 時間: 2025-3-29 00:38 作者: MILL 時間: 2025-3-29 05:40 作者: bourgeois 時間: 2025-3-29 08:57 作者: 顧客 時間: 2025-3-29 14:58
res having been determined by x-ray diffraction the interest has shifted to what we can learn about the energetics and the dynamics of the function. The role of NMR in probing these functional aspects of oxygen binding is discussed. Since much of the information about hemoglobin comes from studying 作者: 和諧 時間: 2025-3-29 18:56
en-Morgan (SBM) approach. Some of the difficulties encountered and how these can best be minimised are discussed. The application of paramagnetic ions as relaxation probes in a number of currently controversial biological problems is considered. These problems include the mechanism of triggering of 作者: acclimate 時間: 2025-3-29 23:13 作者: 抵消 時間: 2025-3-30 02:34
in mind the configuration of the free ion can be a good starting point. The splitting of the five d orbitals may be considered as arising either from the electrostatic repulsion due to the donor atoms or from their different anti-bonding character due to the coordination bond. The metal ions in a c作者: intricacy 時間: 2025-3-30 07:44 作者: epicondylitis 時間: 2025-3-30 12:03 作者: 小口啜飲 時間: 2025-3-30 12:47
he complexities of proteins containing many metal atoms. After describing the qualitative features of M?ssbauer spectra observed for Kramers and non-Kramers systems recent findings on the MoFe protein of nitro-genase (the biological nitrogen fixing system) will be discussed. M?ssbauer and EPR studie作者: Aids209 時間: 2025-3-30 18:35
Erratum to: Performing Political Theory,ve one unpaired electron. The presence of an odd electron in these complexes affords a ready probe of the electronic structure of the O. adduct by electron paramagnetic resonance spectroscopy. This feature and the relative stability of the cobalt(II) complexes has stimulated considerable research on作者: 左右連貫 時間: 2025-3-30 20:58
Internalising Exile at Home and Away,orrelations of EPR properties with their structure and function. Proteins having only EPR-invisible copper contain either Cu(I)—thiolate centers acting in copper-storage or binuclear copper pairs able to bind oxygen. Proteins showing all their copper by EPR have mononuclear copper centers that displ作者: fulmination 時間: 2025-3-31 01:56
Klaus P. Riegel,Hans T. Versmoldthe protein specified by the messenger. Each transfer RNA (molecular weight around 27000) is composed of approximately 80 nucleotides linked by 3′–5′ phosphodiester bonds. The tRNAs which code for the various aminoacids seem to have similar structure. tRNA. from yeast has been investigated in most d作者: aggravate 時間: 2025-3-31 06:27
https://doi.org/10.1007/978-3-642-49819-0t that has come from studies of the cobalt(II), nickel(II) and manganese(II) derivatives of the protein is then sketched. It is shown that in combination these results have yielded a resonable description of the electronic and geometric structure of the metal binding site. In accord with a recent cr作者: Mere僅僅 時間: 2025-3-31 12:31
https://doi.org/10.1007/978-3-662-36415-4enable us to obtain information on molecular motion in biological and related systems. The conventional use of nitroxides, saturation transfer spectroscopy and electron spin-electron spin interactions are the three topics discussed.作者: 可忽略 時間: 2025-3-31 13:39 作者: 金絲雀 時間: 2025-3-31 19:13
al electronic components. The most important of these external components is the radio-frequency (r.f.) power amplifier which must allow a high r.f. current to flow in the “l(fā)oop” irradiating the sample inside the microwave cavity. The microwave cavity is the main point in an ENDOR spectrometer. It m作者: jarring 時間: 2025-4-1 00:47 作者: 松馳 時間: 2025-4-1 03:03
Theory of Electron Spin Resonance,adicals or triplet state molecules except that the spin-orbit interaction is less important for s and p electrons. The treatment for rare earth metals is similar in principle but the fact that the crystal field is much smaller than the spin-orbit interaction for rare earths makes many of the details different.作者: animated 時間: 2025-4-1 07:44 作者: nauseate 時間: 2025-4-1 13:23
Electron Spin Double Resonance Techniques and Saturation Transfer EPR,n transfer EPR (ST-EPR). It will briefly outline the principles of each technique in a phenomenological way. Some particular instrumental points will be discussed. Emphasis will be placed on important applications in biological systems carried out in the past, and future possibilities will be outlined.
