Fibroblast growth factor-1 (FGF-1) is an angiogenic factor with therapeutic potential for the treatment of ischemic disease. FGF-1 has low intrinsic thermostability and is characteristically formulated with heparin as a stabilizing agent. Heparin, however, adds a number of undesirable properties that negatively impact safety and cost. Mutations that increase the thermostability of FGF-1 may obv...

Cold-adapted monomeric isocitrate dehydrogenase of a psychrophilic bacterium, Colwellia maris, (CmIDH) showed a high degree of amino acid sequential identity (69.5%) to a mesophilic nitrogen-fixing bacterium, Azotobacter vinelandii, (AvIDH). In this study, three Ala residues of CmIDH and the corresponding Pro residues of AvIDH were exchanged by site-directed mutagenesis, and several properties ...

The heat-tolerance mechanisms of (hyper)thermophilic proteins provide a unique opportunity to investigate the unsolved protein folding problem. In an attempt to determine whether the interval between residues in sequence might play a role in determining thermostability, we constructed a sequence interval-dependent value function to calculate the residue pair frequency. Additionally, we identifi...

Abstract Lipase is an enzyme commonly applied as a catalyst in the food industry, synthesis of bioplastics, and production biodiesel. Candida rugosa lipase (CRL) one widely used lipases due to its high selectivity activity. However, operating temperatures can denature enzymes, affecting activity structural changes. An be immobilized on supporting matrix improve stability. Ethanol immobilization...

The thermostability of the five kinds of electrophoretically variant phenotypes of GPI which were found in Japanese in a previous study (Tanis et al. 1977) was examined. The most frequently found variant phenotype, termed GPI 1-4HIR1, observed in 20 individuals could be divided into three distinct classes on the basis of thermostability characteristics. These classes were termed 'stable', 'labi...

The barley b-amylase I (Bmy1) locus encodes a starch breakdown enzyme whose kinetic properties and thermostability are critical during malt production. Studies of allelic variation at the Bmy1 locus have shown that the encoded enzyme can be commonly found in at least three distinct thermostability classes and demonstrated the nucleotide sequence variations responsible for such phenotypic differ...

Factors that are related to thermostability of proteins have been extensively studied in recent years, especially by comparing thermophiles and mesophiles. However, most of them are global characters. It is still not clear how to identify specific residues or fragments which may be more relevant to protein thermostability. Moreover, some of the differences among the thermophiles and mesophiles ...

Enteric viruses encounter diverse environments as they migrate through the gastrointestinal tract to infect their hosts. The interaction of eukaryotic viruses with members of the host microbiota can greatly impact various aspects of virus biology, including the efficiency with which viruses can infect their hosts. Mammalian orthoreovirus, a human enteric virus that infects most humans during ch...

Most thermophilic proteins tend to have more salt bridges, and achieve higher thermostability by up-shifting and broadening their protein stability curves. While the stabilizing effect of salt-bridge has been extensively studied, experimental data on how salt-bridge influences protein stability curves are scarce. Here, we used double mutant cycles to determine the temperature-dependency of the ...