[EN] PROTEASE-RESISTANT STREPTAVIDIN<br/>[FR] STREPTAVIDINE RÉSISTANT AUX PROTÉASES
申请人:EUROPEAN MOLECULAR BIOLOGY LABORATORY
公开号:WO2017050947A1
公开(公告)日:2017-03-30
The present invention relates to modified streptavidin molecules that are resistant to cleavage by Lys-C or other proteases. These modified streptavidin molecules can be produced by chemical modification of natural streptavidin, by chemical synthesis or by genetic engineering. The invention also relates to nucleic acid molecules encoding these modified streptavidin molecules, to vectors comprising such nucleic acid molecules, and to cells comprising such nucleic acid molecules or vectors. The invention further relates to solid supports and kits comprising the modified streptavidin molecules. The invention also relates to the use of such modified streptavidin molecules or such solid supports for the capture/immobilization of proteins, peptides, oligonucleotides (e.g. aptamers), polynucleotides (e.g. DNA, RNA, or PNA), lipids, (poly) saccharides, carbohydrates, metabolites, drugs and small molecules, natural and synthetic molecules and to the use of these modified streptavidin molecules or these solid supports in mass spectrometry for the identification of proteins that interact with aforementioned (bio)molecules. The invention further relates to a method for reducing background in mass spectrometry by employing the modified streptavidin molecules.