Abstract: The present invention relates to a beta-galactosidase mutant having high transglycosylation activity and containing a C-terminal deletion, and the use thereof and more. More specifically, the present invention relates to a beta-galactosidase mutant having a C-terminal deletion, a gene encoding the same, a recombinant vector containing the gene, a recombinant microorganism transformed with the gene or the recombinant vector, and a method for producing the beta-galactosidase mutant using the recombinant microorganism. Using the high transglycosylation activity of the beta-galactosidase mutant containing the C-terminal deletion according to the present invention, galactooligosaccharide can be efficiently produced in large amounts.

Abstract: The present invention relates to a beta-galactosidase mutant having high transglycosylation activity and containing a C-terminal deletion, and the use thereof and more. More specifically, the present invention relates to a beta-galactosidase mutant having a C-terminal deletion, a gene encoding the same, a recombinant vector containing the gene, a recombinant microorganism transformed with the gene or the recombinant vector, and a method for producing the beta-galactosidase mutant using the recombinant microorganism. Using the high transglycosylation activity of the beta-galactosidase mutant containing the C-terminal deletion according to the present invention, galactooligosaccharide can be efficiently produced in large amounts.

Abstract: The present invention relates to a microfluidic chip for measuring the magnetic susceptibility of a superparamagnetic nanoparticle droplet and a method for measuring magnetic susceptibility using the same. According to the invention, the magnetic susceptibility of a superparamagnetic nanoparticle can be continuously and accurately measured in a flowing fluid using a microfluidic chip including microfluidic channels.

Abstract: The present invention relates to a method for increasing the binding reversibility of a ?-conotoxin to a N-type calcium channel, which comprises preparing a ?-conotoxin having a Ile and/or Ala residue at a position of amino acid (11 and/or 12), respectively in the second loop between cysteine residues (2 and 3) of the ?-conotoxin represented by the formula I, such that the prepared ?-conotoxin has the increased binding reversibility to N-type calcium channel. In addition, the present invention relates to a novel ?-conotoxin and a pharmaceutical composition having plausible properties in view of blocking activity to and specificity to N-type calcium channel, and dramatically improved binding reversibility to N-type calcium channel.

Abstract: The present invention relates to a microfluidic chip for measuring the magnetic susceptibility of a superparamagnetic nanoparticle droplet and a method for measuring magnetic susceptibility using the same. According to the invention, the magnetic susceptibility of a superparamagnetic nanoparticle can be continuously and accurately measured in a flowing fluid using a microfluidic chip including microfluidic channels.

Abstract: The present invention relates to a method for increasing the binding reversibility of a ?-conotoxin to a N-type calcium channel, which comprises preparing a ?-conotoxin having a Ile and/or Ala residue at a position of amino acid (11 and/or 12), respectively in the second loop between cysteine residues (2 and 3) of the ?-conotoxin represented by the formula I, such that the prepared ?-conotoxin has the increased binding reversibility to N-type calcium channel. In addition, the present invention relates to a novel ?-conotoxin and a pharmaceutical composition having plausible properties in view of blocking activity to and specificity to N-type calcium channel, and dramatically improved binding reversibility to N-type calcium channel.