Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12779/3706
Title: Metal Nucleotide Interactions - Crystal-structures of Ca[cu(guanosine-5'-monophosphate)2(ethylenediamine)-(h2o)2].8h2o and Ca[cu(guanosine-5'-monophosphate)2(h2o)4].6.7h2o
Authors: Mangani, Stefano 
P., Orioli
Keywords: x-ray; crystal structure; nucleotide
Issue Date: 1987
Project: None 
Journal: JOURNAL OF THE CHEMICAL SOCIETY DALTON TRANSACTIONS
Abstract: 
The compounds Ca[Cu(5′-GMP)2(en)(H2O)2]·8H2O(1) and Ca[Cu(5′-IMP)2(H2O)4]·6.7H2O(2) have been prepared and their structures determined (5′-GMP = guanosine 5′-monophosphate, en = ethylenediamine, and 5′-IMP = inosine 5′-monophosphate). Crystals of (1) are monoclinic space group P21, with a= 10.997(2), b= 21.693(4), c= 8.872(2)Å, β= 94.69(l)°, and Z= 2. Crystals of (2) are orthorhombic, space group C2221, with a= 8.757(2), b= 23.229(5), c= 21.212(5)Å, and Z= 4. Both structures were solved by the heavy-atom technique and refined by full-matrix least-squares calculations to R= 0.074 and R′= 0.064 for 1 266 reflections for (1) and to R= 0.094 and R′= 0.093 for 1 275 reflections for (2). In both structures the copper ion shows an elongated octahedral co-ordination with the two nucleotide moieties in cis positions bound through the N(7) purine atoms. In (2) the ethylenediamine ligand has been replaced by two water molecules. Both crystal structures are essentially based on those of the sodium salts of the respective nucleotides.
Description: 
48009
URI: http://hdl.handle.net/20.500.12779/3706
ISSN: 0300-9246
DOI: 10.1039/dt9870002999
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