Papers by Giorgio Giacometti
IOS Press , Ohmsha eBooks, 2001
... ed Arti); the Italian Society of Pure and Applied Biophysics SIB PA (Societa Italiana di Biof... more ... ed Arti); the Italian Society of Pure and Applied Biophysics SIB PA (Societa Italiana di Biofisica Pura ed Applicata); and ... Applications to Photosynthesis, D. Carbonera 105 Electron Spin Echo Envelope Modulation Spectroscopy in the Study of Biological Systems, L. Bubacco 123 ...
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European journal of biochemistry, Dec 1, 1995
Photosystem I and II core complexes were resolved in a single step from the thylakoid membrane of... more Photosystem I and II core complexes were resolved in a single step from the thylakoid membrane of Synechocystis sp. PCC 6803 by using a mild solubilization procedure in dodecyl beta-D-maltoside and Deriphat/PAGE. For each photosystem, two green bands were obtained containing oligomeric and monomeric forms of the core complexes of either photosystem. The oligomers are likely to be trimers in the case of photosystem I and dimers for photosystem II. The absorption spectra, polypeptide and pigment composition of green bands corresponding to either photosystem I or photosystem II were identical for monomeric and oligomeric forms. The cytochrome b-559 content of photosystem II was evaluated to be one cytochrome b-559/reaction centre both in the monomeric and dimeric forms. Two new 15-kDa and 22-kDa carotenoid-binding protein were isolated and their polypeptides purified to homogeneity.
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FEBS Letters, Aug 15, 2005
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Photosynthesis Research, Jun 1, 2006
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FEBS Letters, Oct 12, 1992
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Applied Magnetic Resonance, Nov 10, 2009
The origin of life as is presently known on our planet is deeply connected with the evolution of ... more The origin of life as is presently known on our planet is deeply connected with the evolution of photosynthesis as a mean of providing the chemical substances necessary for the energy requirements of all the complex functions of living organisms. Light energy from the sun radiation is the only and primary source for this energetic endeavor. The evolution of the photosynthetic machinery is a complex biological issue, with links to the more general issue of the early planetary changes following the massive appearance of dioxygen in the atmosphere. Evidences, on which a possible story of this development can be based, have emerged from micro-paleontology and have given rise to some speculation and hypotheses. But a much stronger drive toward an understanding of the problem is connected with the copious results which modern molecular biology and biophysics are currently producing with the advent of molecular phylogenetic techniques and with the knowledge of the detailed atomic structure of the giant molecules that nature has developed to perform otherwise impossible chemical tasks. This minireview gives some of the basic facts and some of the discussion for an approach to the story.
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Biochemical and Biophysical Research Communications, Aug 1, 2000
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Biochemical Journal, Nov 1, 1978
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Biochimica Et Biophysica Acta - Bioenergetics, Mar 1, 2011
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FEBS Letters, Feb 15, 1976
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BMC Plant Biology, Jun 9, 2009
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Zeitschrift für Naturforschung C, 2000
The interaction between azurin from Pseudomonas aeruginosa and Ag(I), Cu(II), Hg(II), was investi... more The interaction between azurin from Pseudomonas aeruginosa and Ag(I), Cu(II), Hg(II), was investigated as a function of protein state, i.e. apo-, reduced and oxidised azurin. Two different metal binding sites, characterized by two different spectroscopic absorbancies, were detected: one is accessible to Ag(I) and Cu(II) but not to Hg(II); the other one binds Ag(I) and Hg(II) but not copper. When added in stoichiometric amount, Ag(I) shows high affinity for the redox center of apo-azurin, to which it probably binds by the -SH group of Cys112; it can displace Cu(I) from reducedazurin, while it does not bind to the redox center of oxidizedazurin. Kinetic experiments show that Ag(I) binding to the reducedform is four times faster than binding to the apo-form. This result suggests that metal binding requires a conformational rearrangement of the active site of the azurin. Interaction of A g(I) or Hg(II) ions to the second metal binding site, induces typical changes of UV spectrum and que...
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Archives of Biochemistry and Biophysics, 1988
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Cellular Physiology and Biochemistry, 2010
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Molecular Crystals and Liquid Crystals, 1986
Page 1. Md. Crysf. Liq. Cryst., 1986, Vol. 141, pp, 165-178 0026-8941 18611412-0165/$20.00/ 0 0 1... more Page 1. Md. Crysf. Liq. Cryst., 1986, Vol. 141, pp, 165-178 0026-8941 18611412-0165/$20.00/ 0 0 1986 Gordon and Breach Science Publishers SA Printed in the United States of America Crystal Structure of the 1:l CT Complex of Biphenylene with ...
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Theoretica Chimica Acta, 1963
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Papers by Giorgio Giacometti