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Chapter 49,442

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

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

Acta Crystallographica. Section C Crystal Structure Communications 62(Part 1): O22-O25

2006


ISSN/ISBN: 0108-2701
PMID: 16397334
DOI: 10.1107/s0108270105038928
Accession: 049441704

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.

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