摘要:
The present invention provides a walnut oligopeptide powder, and a preparation method and application thereof. The oligopeptide powder has a peptide content of 80 wt% or higher, wherein 95% or more of the peptides have a molecular weight of less than 1,500 Da. The method comprises extracting walnut proteins using a highly efficient countercurrent extraction process, and subjecting the extract to filtration, enzymolysis, purification with a microfiltration membrane and an ultrafiltration membrane, concentrating, and spray drying to obtain the oligopeptide powder. The oligopeptide powder has an anti-oxidant activity and provides a protective effect for a neuron, and thus can ameliorate or treat memory deterioration and relieve fatigue.
摘要:
Disclosed is a method for producing a recombinant protein of interest, characterised in by the following steps: (a) providing a fusion protein comprising an Npro autoprotease moiety and a protein of interest moiety in inclusion bodies, (b) solubilising the fusion protein in the inclusion bodies by subjecting the inclusion bodies to a solubilisation buffer containing a detergent and wherein the solubilisation buffer contains no chaotropes or chaotropes in a concentration of less than 1.5 M urea (c) refolding the solubilised fusion protein and (d) allowing the fusion protein to be cleaved by the Npro autoprotease moiety under kosmotropic conditions, wherein the recombinant protein of interest is cleaved from the fusion protein, and (e) recovering the protein of interest.
摘要:
A fusion gene encoding M. taiwanensis WR-220 keratinase is disclosed. The fusion comprises: (a) a first DNA sequence encoding a protein secretion signal peptide, located at the N-terminus of the fusion gene; (b) a second DNA sequence encoding an inhibitory domain of M. taiwanensis WR-220 keratinase, linked in translation frame with the first DNA sequence; and (c) a third DNA sequence encoding a catalytic domain of M. taiwanensis WR-220 keratinase, linked in translation frame with the second DNA sequence, wherein the fusion gene is a non-naturally occurring chimeric DNA. Also disclosed are a method for preparation of the catalytic domain of M. taiwanensis WR-220 keratinase, and use of the M. taiwanensis WR-220 keratinase.
摘要:
The present invention provides means and methods for enhancing the production of membrane or secreted proteins in genetically engineered cells. In particular, the invention provides nucleic acid molecules encoding HAC1 proteins and uses thereof.
摘要:
The invention relates to the affinity plate for haptoglobin phenotype determination, the kit comprising it, and the method of haptoglobin phenotype determination by detection of its a subunits by means of mass spectrometry desorption ionization techniques after preceding preconcentration of haptoglobin on the surface of the affinity plate with immobilized anti-haptoglobin antibody that was deposited onto this surface from gas phase after preceding electrospray ionization and heat desolvation. Then the signals of mass spectra corresponding to α1 and/or α2 subunits can be found and thus determined the haptoglobin phenotype, whereas only al subunit exists in phenotype 1-1, both the subunits a1 and α2 exist in phenotype 2-1, and only α2 subunit exists in phenotype
摘要:
To provide a differentiation-inducing composition and a method for producing the differentiation-inducing composition, the present disclosure describes use of a degradation product containing at least a portion of the triple helical domain of collagen or atelocollagen.
摘要:
The present invention provides means and methods for enhancing the production of membrane or secreted proteins in genetically engineered cells. In particular, the invention provides nucleic acid molecules encoding HAC1 proteins and uses thereof.