Abstract:
The present invention relates to low acidic species (AR) compositions comprising a protein, e.g ., an antibody, or antigen-binding portion thereof, and methods for producing such low AR compositions using displacement chromatography. Methods for using such compositions to treat a disorder, e.g ., a disorder in which TNα is detrimental, are also provided.
Abstract:
(a) 고속 단백질 액체 크로마토그래피(Fast protein liquid chromatography; FPLC) 장치의 45 내지 90㎛ 크기의 겔 입자를 포함하는 컬럼에 봉독 포함 수용액을 주입하는 단계; (b) 증류수를 이동상으로 하여 봉독의 유효성분을 용출시키는 단계를 포함하는 봉독 중 알러지 유발 성분으로부터 봉독의 유효성분을 분리하는 방법을 제공한다.
Abstract:
The present invention provides novel and improved protein purification processes which incorporate certain types of carbonaceous materials and result in effective and selective removal of certain undesirable impurities without adversely effecting the yield of the desired protein product.
Abstract:
The present invention is directed to a novel class of antimicrobial agents called γ- AApeptides. The current invention provides various categories of γ-AApeptides, for example, linear γ-AApeptides, cyclic γ-AApeptides, and lipidated γ-AApeptides. γ- AApeptides of the current invention are designed to exert antimicrobial activity while being stable and non-toxic. y-AApeptides also do not appear to lead to the development of microbial resistance in treated microorganisms. Thus, the disclosed γ-AApeptides can be used for the treatment of various medical conditions associated with pathogenic microorganisms.
Abstract:
The present invention relates to a method for purifying an erythropoietin analog having a low isoelectric point below 4 by adding an N-linked sugar chain with high purity. In accordance with the present invention, the erythropoietin analog having an isoelectric point below 4, which is an isoform having more sialic acid residues, can be effectively purified via three-step chromatographic processes in short time at lower cost.
Abstract:
The present invention relates to a chromatography apparatus comprising: an initial column and a final column for chromatography for obtaining a target protein in which the injection step of loading a sample, the collection step comprising washing and elution, and the regeneration step are carried out in each column; an inlet for the initial column and an inlet for the final column provided at the initial column and the final column, respectively, for loading a sample; a distributor for the initial column for distributing the sample which is loaded through the inlet for the initial column to pass through the initial column; and a sample distributor for the final column for loading the sample which is loaded through the inlet for the final column to pass through the final column, on the initial column, and a chromatography method using the same.
Abstract:
The present invention provides a facile and efficient method for determining a chromatographic protocol for separating a target protein from one or more second protein impurity. Also provided is a database facilitating the determination of an appropriate separation protocol.
Abstract:
The present invention relates to a separation medium, comprising an inner core of a porous material provided with charged ligands, and an outer lid comprising a porous material provided with charged ligands, wherein the charge of the ligands in the inner core is opposite that of the charge of the ligands in the lid. The present invention also relates to a method for biomolecule separation comprising applying a sample to the above separation medium, wherein large molecules are prevented from entering the medium by charge repulsion from the medium and small molecules are captured in the inner core.
Abstract:
The present invention relates to a liquid chromatography column having a solid support comprising at least one immobilised crown ether. It also relates to a use of a crown ether for preparing a biological sample for protein profiling. The invention also relates to a method of preparing a biological sample for protein profiling, comprising the steps of: treating (2) the sample (1) with a cleavage reagent to generate peptides (7) comprising N-terminal primary amines (3, 4, 5), and sorting (9, 10) the peptides (7) by non-covalent interactions using a solid support (11, 13), wherein the non-covalent interactions are H-bridges or pi-pi (p-p) interactions. It also relates to a kit therefor.