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1H-NMR and relaxometry of copper-containing dimers in proteins (1990)

Bertini, Ivano ; Luchinat, Claudio ; Banci, Lucia ; [et al.]

Springer

BioMetals 3 (1990), S. 146-150

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ISSN: 1572-8773

Keywords: Copper ; Cobalt ; Nickel ; Superoxide dismutase ; Alkaline phosphatase ; NMR ; Relaxometry ; Nuclear relaxation ; Electronic relaxation

Source: Springer Online Journal Archives 1860-2000

Topics: Biology , Chemistry and Pharmacology

Notes: Summary The water-proton nuclear-magnetic-relaxation dispersion profiles have been analyzed for Cu2Zn2-superoxide dismutase (SOD) and Cu2-alkaline phosphatase (AP). The electronic relaxation times are derived, together with structural information. The effect of magnetic coupling with another copper ion in Cu2Cu2SOD and Cu2Cu2AP is discussed. It is shown that the electronic relaxation times of copper(II) essentially do not change. The opposite happens with Cu2Co2SOD, Cu2Co2AP and Cu2Ni2SOD in which fast-relaxing metal ions provide relaxation mechanisms for copper(II) as well. In these cases the systems can be studied through high-resolution NMR spectroscopy.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01179525

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