33 results about "Pore Proteins" patented technology

The present invention provides methods for treating an animal for low milk production. The methods include administering compositions including siderophore receptor polypeptides and porins from gram negative microbes, and preferably, lipopolysaccarhide at a concentration of no greater than about 10.0 endotoxin units per milliliter.

The invention belongs to the field of biotechnology, in particular to a protein, a transmembrane nucleic acid unwinding nanopore, a construction method and an application thereof. The technical problem to be solved by the invention is to overcome the shortcoming that the existing small pore protein nanopore needs an external dissociative active component when transporting the double-stranded nucleic acid. The scheme of the invention for solving the defect is to provide a truncated body E1-1 (306-577) protein and E1-2 (306-605) protein and variants thereof of a double-stranded DNA helicase protein of bovine papillomavirus, as well as variant of homologous proteins thereof, which can be used for preparing conductive channel-containing film, which provides a new and effective choice for thatfield.

A class of procytotoxic agents is characterized by a capability to kill with target cell-specificity. Such an aspect can be a pore-forming protein which has at least one lysine residue, modified by a peptide linkage to an amino acid residue, via the epsilon amino group. These agents are useful in treating cancer, especially prostate cancer.

The present disclosure provides compositions and methods for preparing engineered porous protein crystals comprising at least one guest molecule.

The present disclosure relates to relates methods and associated compositions that provide fast, efficient site-selective conjugation of a protein, such as the pore-forming protein α-hemolysin, to a biomolecule, such as a DNA polymerase, and the use of such site-selective protein-biomolecule conjugates in nanopore devices and methods.

The present invention provides a Mnep monomer variant comprising an amino acid sequence of any one or more mutated amino acids at positions 92-104 of SEQ ID NO: 1, and a porin or construct comprising at least one Mnep monomer variant, and its use. The present invention also provides a method of characterizing a target polynucleotide.

The invention discloses eel aeromonas hydrophila and edwardsiella tarda bigeminal recombinant protein and a preparation method thereof. The bigeminal recombinant protein disclosed by the invention comprises an aeromonas hydrophila type II pore protein membrane outer part and an edwardsiella tarda ompS2 membrane outer part which are connected together, and the amino acid sequence of the bigeminal recombinant protein is as shown by SEQ ID NO1. According to the preparation method disclosed by the invention, the aeromonas hydrophila type II pore protein membrane outer part and the edwardsiella tarda ompS2 membrane outer part are connected together through a genetic engineering means to construct the bigeminal recombinant protein, and the bigeminal recombinant protein can prevent inflections of aeromonas hydrophila and edwardsiella tarda at the same time after being used for immunizing eels, and has a better immune effect compared with immunization with single outer membrane protein. The bigeminal recombinant protein disclosed by the invention can obtain an immune effect on a variety of pathogenic bacteria through only once injection on a fish body, so that injuries to the fish body are reduced, and immunization steps are simplified; the preparation method of the bigeminal recombinant protein is suitable for industrial production.

A disposable immunodiagnostic system tests for marker proteins in liquid sample analytes. It includes intimately contacting passage, protein, and absorbent layers. The passage layer is non-porous and has an aperture therethrough. The protein layer is porous and operatively enables immobilization of combinable proteins thereon, as well as passage of the analyte therethrough. The protein layer has an active surface area that is aligned with the passage layer aperture. The analyte is operatively introduced onto the protein layer through the passage layer aperture. In positive results, the marker proteins are operatively bound to the combinable proteins and immobilized relative to the protein layer. In negative results, the analyte operatively passes through the protein layer, and is absorbed by the absorbent layer. A housing may also be provided. The system is constructed of a combustible material that produces non-toxic by-products upon incineration, enabling ecologically responsible disposal after diagnostic use of the system.