Journal
ORGANIC & BIOMOLECULAR CHEMISTRY
Volume 18, Issue 2, Pages 211-214Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ob02275a
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Funding
- NUI Galway (Hardiman Research Scholarship)
- University of Trieste
- Italian Ministry of Instruction, University and Research programme (COMP-HUB initiative)
- Italian Ministry of Instruction, University and Research programme (Departments of Excellence Program)
- Italian Ministry of Instruction, University and Research programme [PRIN 2017E44A9P, PRIN 20179BJNA2]
- Science Foundation Ireland [13/CDA/2168]
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Sulfonato-calix[n]arenes (sclx(n)) are promising tools to generate crystalline protein frameworks. We report, for the first time, a lower rim functionalised octa-anionic calix[4]arene (sclx(4)mc) in complex with proteins. Two crystal structures of sclx(4)mc bound to yeast or horse heart cytochrome c (cytc) are described. Highly porous honeycomb or tubular assemblies were obtained with yeast or horse cytc, respectively. Related frameworks were obtained previously with sclx(8) and sclx(6) but not with sclx(4), suggesting that the ligand charge is a determining factor.
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