The 3D structure determination of proteins using X-ray Diffraction is one of the core services of our Infrastructure. Knowledge of the 3D structure of macromolecular targets of pharmaceutical and biotechnological interest and their complexes with small molecules or other proteins may reveal the structure-function relationships that dictate their mechanism of action. Proteins participate in a plethora of metabolic pathways and controlling their interactions with their counterparts or bioactive compounds may allow the development of therapeutic interventions with significant socioeconomic impact.
Potential users: Scientists working in academic/research organizations, health sciences, hospitals, industries (pharmaceutical, food, agricultural, biofuel, paper, chemical) and SMEs.
Single crystal Xray diffractometer from Bruker is an X-ray generator which enables us to check crystals of various sizes and collect X-ray diffraction data from a single crystal sample. In addition to the single source configuration of the D8 QUEST, the larger enclosure of the D8 VENTURE hosts all the high intensity sources for working on even smaller, weakly diffracting crystals. The D8 VENTURE offers highest experimental flexibility, with excellent sample accessibility and visibility. It is engineered with high modularity from best-in-class components and is available in popular all-air-cooled configurations. The absolutely open design protects your investment with maximum flexibility for future extensions. It hosts the experimental setup in a more spacious enclosure that also provides room for rotating anode, revolutionary liquid metal X-ray source for structural biology, highest X-ray intensity in-house for even smaller and more challenging samples, self-regenerating target with Ga-radiation for lower background scattering and radiation damage, combination of two different wavelengths, fast and fully-automated wavelength switch.
The D8 VENTURE hosts the experimental setup in a more spacious enclosure that also provides room for rotating anode, liquid metal jet and dual wavelengths solution. All systems feature the revolutionary PHOTON II CPAD detector.
The D8 VENTURE offers highest experimental flexibility, with excellent sample accessibility and visibility. It is engineered with high modularity from best-in-class components and is available in popular all-air-cooled configurations. The absolutely open design protects your investment with maximum flexibility for future extensions.
EDUCATION
2019: PhD in Structural Biology and Protein Biomaterials (UoC, IMBB-FORTH - Greece)
2012: M.Sc. in Protein Biotechnology (UoC-Greece)
2009: Diploma Degree in Biology (UoC-Greece)
WORKING EXPERIENCE
Oct 2019 – Now: Post-Doctoral Researcher at I.M.B.B.-F.O.R.TH, Greece
(Laboratory of Structural Biology)
Sep 2020 – Now: Autonomous teaching and exam organizing of the under-graduate courses
"Enzymatic Biotechnology" and “Protein Engineering” at the Dept. of
Biology of the Uni. of Crete
2014 – 2020: Experienced scientist position at I.M.B.B.-F.O.R.TH, Greece (InnovCrete project /FP7-Regpot program) and at University of Crete
Oct. 2010 –Jan. 2011: Laboratory Teaching Assistant of Microbiology Teaching Lab
at the Dept. of Biology, Uni. of Crete
SELECTED PUBLICATIONS
*Kefala K., Kotsifaki D., Providaki M., Kapetaniou E., Rahme L. and Kokkinidis M. Purification, crystallization and preliminary X-ray diffraction analysis of the C-terminal fragment of the MvfR protein of Pseudomonas aeruginosa. (2012). Acta. Cryst F, 68, 695-697
*Kefala A., Kotsifaki D., Providaki M., Amprazi M. and Kokkinidis M. Expression, purification and crystallization of a protein resulting from the inversion of the aminoacid sequence of a helical bundle. (2017). ). Acta. Cryst F, 73, 51-53
Dimovasili C., Fadouloglou V.E., Kefala A., Providaki M., Kotsifaki D, Sarrou I., Plaitakis A., Zaganas I. and Kokkinidis M. Crystal structure of glutamate dehydrogenase 2, a positively selected novel human enzyme involved in brain biology and cancer pathophysiology. Journal of Neurochemistry (accepted)
RESEARCH PROFILE
Being in a Structural Biology group since 2011, Dr. Kefala A. has studied deeply the protein folding problem, elucidating the relation between amino acid sequence and structural properties of α-helical bundles. The knowledge obtained was used for protein design leading to bio-derived materials for bio-medical applications and basic research through structural studies of protein folding through reverse sequences.
Notable achievements include:
The elucidation of the protein folding of mutants of the α-helical protein Rop that is used as a canonical paradigm of this structural motif.
Protein design of novel protein-based biomaterials with specific engineered properties.
The D8 VENTURE hosts the experimental setup in a more spacious enclosure that also provides room for rotating anode, liquid metal jet and dual wavelengths solution. All systems feature the revolutionary PHOTON II CPAD detector.
The D8 VENTURE offers highest experimental flexibility, with excellent sample accessibility and visibility. It is engineered with high modularity from best-in-class components and is available in popular all-air-cooled configurations. The absolutely open design protects your investment with maximum flexibility for future extensions.