2q33

Crystal structure of all-D monellin at 1.8 A resolution

spinqualitylabelsall models 2q33, resolution 1.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2q33 is a 2 chain structure. This structure supersedes the now removed PDB entry 1n98. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: DAL, DAR, DAS, DCY, DGL, DGN, DIL, DLE, DLY, DPN, DPR, DSG, DSN, DTH, DTR, DTY, DVA, MED Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed The D-enantiomer of a potently sweet protein, monellin, has been crystallized and analyzed by X-ray crystallography at 1.8 A resolut ion. Two crystal forms (I and II) appeared under crystallization conditions similar, but not identical, to the crystallization conditions of natural L-monellin. There are four molecules per asymmetric unit in crystal form I and one in crystal form II. Crystal form I is not reproducible and is equivalent to that of monoclinic L-monellin. Intermonomer contacts in crystal form II are very different from those found in natural L-monellin crystals. The backbone trace of D-monellin resembles very closely the mirror image of that of L-monellin, but the N- and C-terminus backbones as well as several side-chain conformations of D-monellin are different from those of natural L-monellin. Most of these apparent differences may be attributable to the crystal packing differences. Structure of an enantiomeric protein, D-monellin at 1.8 A resolution.,Hung LW, Kohmura M, Ariyoshi Y, Kim SH Acta Crystallogr D Biol Crystallogr. 1998 Jul 1;54(Pt 4):494-500. PMID:9867435 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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