The present invention relates to a novel method for the isolation of proteins from a solution containing one or more of proteins. The method comprising the steps of: (i) contacting a solution containing one or more proteins having a pH in the range of 1.0 to 6.0 and a total salt content corresponding to an ionic strength of at the most 2.0 with a solid phase matrix comprising a functionalised matrix backbone carrying a plurality of functional groups of the following formula
M-SP1-X-A-SP2-ACID
wherein M designates the matrix backbone; and SP1-X-A-SP2-ACID designates a ligand -L; SP1 designates a spacer which is not a divinyl sulfone derived spacer; X designates -O-,-S-, or -NH-; A designates a mono- or bicyclic optionally substituted aromatic or heteroaromatic moiety; SP2 designates an optional spacer; and ACID designates an acidic group; with the proviso that the molecular weight of the ligand -L is at the most 500 Dalton; (ii) contacting the solid phase matrix with an eluent in order to liberate one or more of the proteins from the solid phase matrix, wherein the eluent used comprises less than 10% (v/v) of organic solvents.
本发明涉及一种从含有一种或多种蛋白质的溶液中分离蛋白质的新方法。该方法包括以下步骤(i) 将含有一种或多种蛋白质的溶液与固相基质接触,该固相基质的 pH 值在 1.0 至 6.0 之间,总盐含量相当于离子强度至多为 2.0。
m-
SP1-x-a-
SP2-acid
其中 M 表示基质骨架;
SP1-X-A-
SP2-ACID 表示
配体-L;
SP1 表示非
二乙烯基砜衍生的间隔物;X 表示-O-、-S-或-NH-;A 表示单环或双环任选取代的芳香族或杂芳族分子;
SP2 表示任选间隔物;和 ACID 表示酸性基团;但
配体-L 的分子量最多为 500 道尔顿;(ii) 将固相基质与洗脱液接触,以便从固相基质中释放出一种或多种蛋白质,其中所用的洗脱液包括小于 10%(v/v)的有机溶剂。