In situ detection of a novel lysozyme monoclinic crystal form upon controlled relative humidity variation

…, AN Fitch, M Calamiotou, F Karavassili… - Journal of Applied …, 2018 - journals.iucr.org
The effect of relative humidity (rH) on protein crystal structures, an area that has attracted
high scientific interest during the past decade, is investigated in this study on hen egg-white …

Unit-cell response of tetragonal hen egg white lysozyme upon controlled relative humidity variation

…, G Nénert, AN Fitch, F Karavassili… - Journal of Applied …, 2019 - journals.iucr.org
Variation of relative humidity (rH) greatly affects the internal order of solvent-based protein
crystals, and the rearrangement of molecules can be efficiently recorded in distinct diffraction …

Coxsackievirus B3 protease 3C: expression, purification, crystallization and preliminary structural insights

…, F Karavassili, E Rosmaraki, A Fitch… - … Section F: Structural …, 2016 - journals.iucr.org
Viral proteases are proteolytic enzymes that orchestrate the assembly of viral components
during the viral life cycle and proliferation. Here, the expression, purification, crystallization …

Applications of X-ray powder diffraction in protein crystallography and drug screening

…, DP Triandafillidis, C Kosinas, A Fitch, F Karavassili… - Crystals, 2020 - mdpi.com
… superlattice of the T 3 R 3 f structure (a phase denoted as T 3 R 3 f DC). The complete
structural determination was achieved via XRPD and verified later via SCXD experiments [140]. …

Insulin polymorphism induced by two polyphenols: new crystal forms and advances in macromolecular powder diffraction

…, J Wollenhaupt, MS Weiss, F Karavassili… - … Section D: Structural …, 2020 - journals.iucr.org
This study focuses on the polymorphism of human insulin (HI) upon the binding of the phenolic
derivatives p-coumaric acid or trans-resveratrol over a wide pH range. The determination …

[PDF][PDF] Human insulin polymorphism upon ligand binding and pH variation: the case of 4-ethylresorcinol

…, A Fitch, F Gozzo, AE Giannopoulou, F Karavassili… - IUCrJ, 2015 - journals.iucr.org
This study focuses on the effects of the organic ligand 4-ethylresorcinol on the crystal
structure of human insulin using powder X-ray crystallography. For this purpose, systematic …

Exploring the complex map of insulin polymorphism: a novel crystalline form in the presence of m-cresol

F Karavassili, A Valmas, M Dimarogona… - … Section D: Structural …, 2020 - journals.iucr.org
In this study, the first crystal structure of a novel crystal form of human insulin bound to meta-cresol
in an acidic environment is reported. The combination of single-crystal and powder X-…

Revisiting the structure of a synthetic somatostatin analogue for peptide drug design

…, K Barlos, KK Barlos, F Karavassili… - … Section B: Structural …, 2019 - journals.iucr.org
Natural or artificially manufactured peptides attract scientific interest worldwide owing to their
wide array of pharmaceutical and biological activities. X-ray structural studies are used to …

Novel crystalline phase and first-order phase transitions of human insulin complexed with two distinct phenol derivatives

…, F Gozzo, AE Giannopoulou, F Karavassili… - … Section D: Biological …, 2015 - journals.iucr.org
The primary focus of the present work is the study of the effects that two ligands and the
crystallization pH have on the crystalline forms of human insulin. For this purpose, human insulin …

The T2 structure of polycrystalline cubic human insulin

DP Triandafillidis, F Karavassili… - Biological …, 2023 - journals.iucr.org
The polymorphism of human insulin upon pH variation was characterized via X-ray powder
diffraction, employing a crystallization protocol previously established for co-crystallization …