Acta Crystallographica Section C

Crystal Structure Communications

Volume 62, Part 1 (January 2006)

organic compounds

fg1882 scheme

Acta Cryst. (2006). C62, o22-o25 [ doi:10.1107/S0108270105038928 ]

L-Isoleucyl-L-serine 0.33-hydrate, L-phenylalanyl-L-serine and L-methionyl-L-serine 0.34-hydrate

C. H. Görbitz, M. Bruvoll, S. Dizdarevic, N. Fimland, J. Hafizovic, H. T. Kalfjøs, A. Krivokapic and K. Vestli

Abstract: The structures of the title dipeptides, C₉H₁₈N₂O₄·0.33H₂O, C₁₂H₁₆N₂O₄ and C₈H₁₆N₂O₄S·0.34H₂O, complete a series of investigations focused on L-Xaa-L-serine peptides, where Xaa is a hydrophobic residue. All three structures are divided into hydrophilic and hydrophobic layers. The hydrophilic layers are thin for L-phenylalanyl-L-serine, rendered possible by an unusual peptide conformation, and thick for L-isoleucyl-L-serine and L-methionyl-L-serine, which include cocrystallized water molecules on the twofold axes.

Formula: C₉H₁₈N₂O₄·0.33H₂O, C₁₂H₁₆N₂O₄ and C₈H₁₆N₂O₄S·0.34H₂O


	Structure factor file (CIF format) (70.6 kbytes) [ doi:10.1107/S0108270105038928/fg1882ISsup2.hkl ] Contains datablock IS

	Structure factor file (CIF format) (117.5 kbytes) [ doi:10.1107/S0108270105038928/fg1882FSsup3.hkl ] Contains datablock FS

	Structure factor file (CIF format) (139.9 kbytes) [ doi:10.1107/S0108270105038928/fg1882MSsup4.hkl ] Contains datablock MS

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