摘要:
Methods of preparing plant-derived proteins or suprastructure proteins, are provided. The method may comprise obtaining a plant, or plant matter comprising apoplast-localized proteins, or suprastructure proteins, producing a protoplast/spheroplast fraction and apoplast fraction from the plant or plant matter, and recovering the apoplast fraction. The apoplast fraction comprises plant-derived proteins or suprastructure proteins. Alternatively, the proteins, or suprastructure proteins, may be obtained from plant or plant matter comprising plant-derived proteins or suprastructure proteins, by digesting the plant matter using a cell wall degrading enzyme composition to produced a digested fraction. The digested fraction is filtered to produced a filtered fraction, and the plant-derived proteins or suprastructure proteins, are recovered from the filtered fraction.
摘要:
The invention provides methods for isolating a modified peptide from a complex mixture of peptides, the method comprising the steps of: (a) obtaining a proteinaceous preparation from an organism, wherein the preparation comprises modified peptides from two or more different proteins; (b) contacting the preparation with at least one immobilized modification-specific antibody; and (c) isolating at least one modified peptide specifically bound by the immobilized modification-specific antibody in step (b). The method may further comprise the step of (d) characterizing the modified peptide isolated in step (c) by mass spectrometry (MS), tandem mass spectrometry (MS-MS), and/or MS3 analysis, or the step of (e) utilizing a search program to substantially match the spectra obtained for the modified peptide during the characterization of step (d) with the spectra for a known peptide sequence, thereby identifying the parent protein(s) of the modified peptide. Also provided are an immunoaffinity isolation device comprising a modification-specific antibody, and antibodies against novel UFD1 and PTN6 phosphorylation sites.
摘要:
A solid sorbent material comprising cellulose which has been modified by hydrolysis with a cellulase enzyme for a duration sufficient to increase the protein adsorption capacity of the solid sorbent material and methods for preparing the sorbent material. Methods for purifying a protein include passing a liquid medium containing the protein over the solid sorbent material are also included.
摘要:
Proteases derived from Nocardiopsis dassonvillei subsp. dassonvillei DSM 43235, Nocardiopsis prasina DSM 15649, Nocardiopsis prasina (previously alba) DSM 14010 Nocardiopsis sp. DSM 16424, Nocardiopsis alkaliphila DSM 44657 and Nocardiopsis lucentensis DSM 44048, as well as homologous proteases; their recombinant production in various hosts, including transgenic plants and non-human animals, and their use in animal feed and detergents. The proteases are acid-stable, alkali-stable, and/or thermostable.
摘要:
The present invention provides reagents and methods for inhibiting bacterial infection and abnormal cell growth, as well as for selection cloning of nucleic acid inserts.
摘要:
A method for the separation of a target molecule from a mixture is described. The method employs oil bodies and their associated proteins as affinity matrices for the selective, non-covalent binding of desired target molecules. The oil body proteins may be genetically fused to a ligand having specificity for the desired target molecule. Native oil body proteins can also be used in conjunction with an oil body protein specific ligand such as an antibody or an oil body binding protein. The method allows the separation and recovery of the desired target molecules due to the difference in densities between oil bodies and aqueous solutions.
摘要:
A process for preparing lys-plasminogen from blood plasma or blood plasma products having a specific activity of at least 17.5 caseinolytic units/mg protein and at lease 50 .mu.moles/g protein nitrogen as well as a an electrophoretic purity of at least 90% is presented. Cohn fraction III is obtained by phosphate precipitation from blood plasma or blood plasma products. A crude plasminogen fraction is then obtained by precipitating most non-plasminogen proteins with ethanol. The crude plasminogen is absorbed on immobilized lysine affinity column. Elution followed by precipitation obtains a purified plasminogen. The purified plasminogen is converted to lys-plasminogen with plasmin having an activity from 0.01 to 0.1 .mu.moles/ml min relative to chromogenic substrate H-D-Val-L-Leu-L-Lys-p-nitroanilide by dialyzing at a temperature of about 1.degree. to 20.degree. C. for a time period of about 6 to 60 hours. The conversion is interrupted by adding aprotinin. The resulting lys-plasminogen is lyophilized to produce a lyophilized lys-plasminogen.
摘要:
A wire or optical fiber cable configured for electronic devices, including at least one wire or optical fiber; at least one inner layer surrounding a portion of the at least one wire or optical fiber; at least one outer layer surrounding a portion of the at least one inner layer; and at least one internal sipe separating at least a part of one outer layer and at least a part of one inner layer. The internal sipe is formed by at least a portion of an inner surface of the outer layer and at least a portion of an outer surface of the inner layer; and the inner and outer surface portions forming the internal sipe oppose each other and can move relative to each other in a sliding motion.