2q33 | pdb_00002q33
Crystal structure of all-D monellin at 1.8 A resolution
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| 2q33, resolution 1.80Å | |||||||||||||
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| Ligands: | DAL, DAR, DAS, DCY, DGL, DGN, DIL, DLE, DLY, DPN, DPR, DSG, DSN, DTH, DTR, DTY, DVA, MED | ||||||||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
Overview
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.
About this Structure
2Q33 is a Protein complex structure of sequences from [1]. This structure supersedes the now removed PDB entry 1N98. Full crystallographic information is available from OCA.
Reference
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
Page seeded by OCA on Mon Mar 31 04:43:57 2008
