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6F7X

Crystal structure of dimethylated RSL - cucurbit[7]uril complex, F432 form

Summary for 6F7X
Entry DOI10.2210/pdb6f7x/pdb
Related6F7W 6F7Y
DescriptorFucose-binding lectin protein, methyl alpha-L-fucopyranoside, cucurbit[7]uril, ... (5 entities in total)
Functional Keywordscucurbituril, dimethyllysine, supramolecular recognition, sugar binding protein
Biological sourceRalstonia solanacearum (Pseudomonas solanacearum)
Total number of polymer chains3
Total formula weight33015.38
Authors
Guagnini, F.,Rennie, M.L.,Crowley, P.B. (deposition date: 2017-12-12, release date: 2018-05-30, Last modification date: 2024-01-17)
Primary citationGuagnini, F.,Antonik, P.M.,Rennie, M.L.,O'Byrne, P.,Khan, A.R.,Pinalli, R.,Dalcanale, E.,Crowley, P.B.
Cucurbit[7]uril-Dimethyllysine Recognition in a Model Protein.
Angew. Chem. Int. Ed. Engl., 57:7126-7130, 2018
Cited by
PubMed Abstract: Here, we provide the first structural characterization of host-guest complexation between cucurbit[7]uril (Q7) and dimethyllysine (KMe ) in a model protein. Binding was dominated by complete encapsulation of the dimethylammonium functional group. While selectivity for the most sterically accessible dimethyllysine was observed both in solution and in the solid state, three different modes of Q7-KMe complexation were revealed by X-ray crystallography. The crystal structures revealed also entrapped water molecules that solvated the ammonium group within the Q7 cavity. Remarkable Q7-protein assemblies, including inter-locked octahedral cages that comprise 24 protein trimers, occurred in the solid state. Cucurbituril clusters appear to be responsible for these assemblies, suggesting a strategy to generate controlled protein architectures.
PubMed: 29673020
DOI: 10.1002/anie.201803232
PDB entries with the same primary citation
Experimental method
X-RAY DIFFRACTION (2.42 Å)
Structure validation

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