K. Heine, K. Fairweather, Axel Heine
Jun 22, 2012
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0
Influential Citations
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Journal
Journal of Chemical Crystallography
Abstract
The structure of glycyl-l-glutamyl-l-phosphoseryl-l-leucine, (C16H29N4O11P)2·3H2O is reported. The dimeric structure is characterized by an unusual absence of head-to-tail chains in connection with an extended intermolecular hydrogen bonding network. Two of the three H2O molecules included in the network are disordered. The protonation constants of the tetrapeptide were determined as log K1 = 1.50, log K2 = 3.63, log K3 = 4.32, log K4 = 6.08 and log K5 = 8.65 by potentiometric pH titration.Graphical AbstractThe dimeric structure of glycyl-l-glutamyl-l-phosphoseryl-l-leucine, (C16H29N4O11P)2·3H2O is characterized by the unusual absence of head-to-tail chains in connection with an extended intermolecular hydrogen bonding network.