Crystal Structure and Spectroscopic Analysis of the Compatible Solute Nγ-Acetyl-L-2,4-Diaminobutyric Acid

Author:

Martin Lea,Klein WilhelmORCID,Schwaminger Sebastian P.ORCID,Fässler Thomas F.ORCID,Berensmeier SonjaORCID

Abstract

Compatible solutes are low molecular weight, highly water-soluble and neutrally net-charged molecules with various protective functionalities that accumulate and are produced in microorganisms. Their multi-purpose functionalities, also adaptable in vitro, make them potential components in healthcare and cosmetic products. One promising but insufficiently examined representative of this molecule class is Nγ-acetyl-L-2,4-diaminobutyric acid (γ-NADA), the metabolic precursor of ectoine. Here, we demonstrate the crystallization ability of γ-NADA by using cooling crystallization in aqueous solvents and find that it forms rod-shaped crystals. According to a single crystal structure determination, γ-NADA is orthorhombic with space group P212121 and a = 5.3647(1), b = 8.3652(2), c = 16.9149(5) Å, Z = 4, R1 = 3.48%, wR2 = 7.33% (all data). Additionally, γ-NADA is analyzed via Raman, IR, 1H, and 13C NMR spectroscopy.

Publisher

MDPI AG

Subject

Inorganic Chemistry,Condensed Matter Physics,General Materials Science,General Chemical Engineering

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