Browsing by Subject "amino acid"

Article

Arginine methylation at histone H3R2 controls deposition of H3K4 trimethylation

Kirmizis, Antonis; Santos-Rosa, H.; Penkett, C. J.; Singer, M. A.; Vermeulen, M.; Mann, M.; Bähler, J.; Green, R. D.; Kouzarides, T. (2007)

Modifications on histones control important biological processes through their effects on chromatin structure. Methylation at lysine 4 on histone H3 (H3K4) is found at the 5′ end of active genes and contributes to ...

Article

Chiral ionic liquids in chromatographic and electrophoretic separations

Kapnissi‐Christodoulou, Constantina P.; Stavrou, Ioannis J.; Mavroudi, Maria C. (2014)

This report provides an overview of the application of chiral ionic liquids (CILs) in separation technology, and particularly in capillary electrophoresis and both gas and liquid chromatography. There is a large number of ...

Article

Computational protein design with a generalized born solvent model: Application to asparaginyl-tRNA synthetase

Polydorides, Savvas; Amara, Najette; Aubard, C.; Plateau, P.; Simonson, T.; Archontis, Georgios Z. (2011)

Computational Protein Design (CPD) is a promising method for high throughput protein and ligand mutagenesis. Recently, we developed a CPD method that used a polar-hydrogen energy function for protein interactions and a ...

Article

Evaluation of amino acid ester-based ionic liquids as buffer additives in CE for the separation of 2-arylpropionic acids nonsteroidal anti-inflammatory drugs

Mavroudi, Maria C.; Kapnissi‐Christodoulou, Constantina P. (2014)

The aim of the present study is the CE performance evaluation for the separation of 2-arylpropionic acid nonsteroidal anti-inflammatory drugs. In particular, the separation of indoprofen, carprofen, ketoprofen, ibuprofen, ...

Article

In vivo high-resolution magic angle spinning magnetic resonance spectroscopy of Drosophila melanogaster at 14.1 T shows trauma in aging and in innate immune-deficiency is linked to reduced insulin signaling

Righi, V.; Apidianakis, Yiorgos; Mintzopoulos, D.; Astrakas, L.; Rahme, L. G.; Tzika, A. A. (2010)

In vivo magnetic resonance spectroscopy (MRS), a non-destructive biochemical tool for investigating live organisms, has yet to be used in the fruit fly Drosophila melanogaster, a useful model organism for investigating ...

Article

Molecular and Clinical Investigation of Cystinuria in the Greek-Cypriot Population

Athanasiou, Yiannis; Voskarides, Konstantinos; Chatzikyriakidou, Anthoula L.; Ignatiou, Anastasia; Demosthenous, Panayiota; Elia, Avraam; Zavros, Michalis; Georgiou, Ioannis A.; Pierides, Alkis M.; Constantinou-Deltas, Constantinos D. (2015)

Background and Aims: Cystinuria represents 3% of nephrolithiasis in humans. Two genes have been identified as the main genetic causes of cystinuria, SLC3A1 and SLC7A9, with an autosomal recessive mode of inheritance. In ...

Article

New compstatin peptides containing n-terminal extensions and non-natural amino acids exhibit potent complement inhibition and improved solubility characteristics

Gorham, R. D.; Forest, D. L.; Khoury, G. A.; Smadbeck, J.; Beecher, C. N.; Healy, E. D.; Tamamis, Phanourios; Archontis, Georgios Z.; Larive, C. K.; Floudas, C. A.; Radeke, M. J.; Johnson, L. V.; Morikis, D. (2015)

Compstatin peptides are complement inhibitors that bind and inhibit cleavage of complement C3. Peptide binding is enhanced by hydrophobic interactions

Article

Polypeptide Amino Acid Composition and Isoelectric Point. 1. A Closed-Form Approximation

Patrickios, Costas S. (1995)

Two analytical expressions correlating explicitly polyampholyte isoelectric point to acid-base composition are derived and presented. The utility and limitations of these equations for the determination of the isoelectric ...

Article

Specific amino acid recognition by aspartyl-tRNA synthetase studied by free energy simulations

Archontis, Georgios Z.; Simonson, T.; Moras, D.; Karplus, M. (1998)

Specific amino acid binding by aminoacyl-tRNA synthetases is necessary for correct translation of the genetic code. To obtain insight into the origin of the specificity, the binding to aspartyl-tRNA synthetase (AspRS) of ...

Article

Synthesis and structural and spectroscopic characterization of a complex between Co(II) and imino-bis(methylphosphonic acid): Gaining insight into biologically relevant metal-ion phosphonate interactions or looking at a new Co(II)-organophosphonate material?

Jankovics, H.; Daskalakis, M.; Raptopoulou, C. P.; Terzis, A.; Tangoulis, V.; Giapintzakis, John; Kiss, T.; Salifoglou, A. (2002)

Cobalt is an essential metal ion involved in key biomolecules, regulating processes in human physiology. As a metal ion, Co(II) assumes forms, which are dictated by the nature of organic binders in biological fluids, and ...

Article

Ultraviolet Absorbance and Circular Dichroism of Pf1 Virus: Nucleotide/Subunit Ratio of Unity, Hyperchromic Tyrosines and DNA Bases, and High Helicity in the Subunits

Kostrikis, Leontios G.; Liu, D. J.; Day, L. A. (1994)

Data have been obtained for the Pfl virion that establish its stoichiometry and conformational features of its DNA and its protein. The absorbance spectrum of the dissociated virus under alkaline denaturing conditions is ...

Article

Use of chiral amino acid ester-based ionic liquids as chiral selectors in CE

Stavrou, Ioannis J.; Kapnissi‐Christodoulou, Constantina P. (2013)

In this study, the applicability of a chiral ionic liquid (CIL) as the sole chiral selector in CE was investigated for the first time. In particular, five amino acid ester-based CILs were synthesized and used as additives ...