Zobrazeno 1 - 10
of 276
pro vyhledávání: '"LUCIO RANDACCIO"'
Publikováno v:
Molecules, Vol 15, Iss 5, Pp 3228-3259 (2010)
The chemistry and biochemistry of the vitamin B12 compounds (cobalamins, XCbl) are described, with particular emphasis on their structural aspects and their relationships with properties and function. A brief history of B12, reveals how much the effo
Externí odkaz:
https://doaj.org/article/857534396fb148f1a21f445af7d2ec21
Publikováno v:
European Journal of Inorganic Chemistry. 2009:2629-2638
New trinuclear mixed-valent CoIII-CoII-CoIII complexes with salen-type ligands have been synthesized and characterized both in the solid state and in solution. These complexescomprise a central CoCl2 unit connecting two [RCo(4,4′,7,7′tmsalen)] fr
Autor:
Lucio Randaccio, Patricia A. Marzilli, Patrizia Siega, Rene J. Lachicotte, Luigi G. Marzilli, Scott J. Moore
Publikováno v:
Inorganica Chimica Acta. 362:993-1002
We prepared two new analogues of ([CH 3 CO((DO)(DOH)pn)L] + ) [(DO)(DOH)pn = N 2 ,N 2 '-propane-1,3-diylbis(2,3-butanedione-2-imine-3-oxime)] B 12 models but with an O-BF 2 -O unit replacing the O-H···O unit as follows: [CH 3 Co((DO)(DOBF 2 )pn)L]
Publikováno v:
Inorganica Chimica Acta. 362:682-690
This short review describes the use of organocobaloximes in the self-assembly of supramolecular systems by means of functionalized aromatic boronic or diboronic acids. With the former, the cyclization is achieved by the coordination of the nitrogen d
Autor:
Béatrice Dubessy, Lucio Randaccio, Jean-Christophe Mulatier, Silvano Geremia, Jean-Pierre Dutasta, Rita De Zorzi
Publikováno v:
The Journal of Organic Chemistry. 72:4528-4531
Four tetraphosphorylated TiiiiPO cavitands 1 encapsulate the pyridinium heads of a tetrakis(N-methylpyridinium)porphyrin iodide to form a 4:1:4 (host)4/guest4+/4I- complex. The single-crystal X-ray diffraction analysis shows the arrangement of the fo
Autor:
Silvano Geremia, Lucio Randaccio, Alessandro Pesaresi, Igor Zelezetsky, Gianluca Tell, Alessia Bisca, Mara Campagnolo
Publikováno v:
Journal of Biomolecular Structure and Dynamics. 24:429-441
Pax-8 is a member of the Pax family of transcription factors and is essential in the development of thyroid follicular cells. Pax-8 has two DNA-binding domains: the paired domain and the homeo domain. In this study, a preliminary X-ray diffraction an
Autor:
Quirinus B. Broxterman, Silvano Geremia, Lucio Randaccio, Nicola Demitri, Paolo Scrimin, Massimo Bellanda, Bernard Kaptein, Lucia Pasquato, Paolo Pengo, Stefano Mammi
Publikováno v:
Chemistry - A European Journal. 13:407-416
The two peptides, rich in C(alpha)-tetrasubstituted amino acids, Ac-[Aib-L-(alphaMe)Val-Aib](2)-L-His-NH(2) (1) and Ac-[Aib-L-(alphaMe)Val-Aib](2)-O-tBu (2 a) are prevalently helical. They present the unique property of changing their conformation fr
Publikováno v:
IUBMB Life. 59:722-729
Cobalamin (Cbl, vitamin B12) is an essential micronutrient that is synthesized only by bacteria. Mammals have developed a complex system for internalization of this vitamin from the diet. Three binding proteins (haptocorrin, intrinsic factor, transco
Publikováno v:
Coordination Chemistry Reviews. 250:1332-1350
In recent years, X-ray structural determinations of cobalamins (Cbl) have become very accurate thanks to the use of new detectors and synchrotron radiation. This has allowed in depth study of the geometrical features of cobalamins, regarding the larg
Publikováno v:
Inorganic Chemistry. 45:3359-3368
Structural and 1 H NMR data have been obtained for cobaloximes with the bulkiest substituted pyridines reported so far. We have isolated in noncoordinating solvents the complexes CH 3 Co(DH) 2 L (methylcobaloxime, where DH = the monoanion of dimethyl