Methods Of Stapling And Unstapling Peptides And Proteins
申请人:The Trustees Of The University Of Pennsylvania
公开号:US20150376579A1
公开(公告)日:2015-12-31
The present disclosure pertains to the field peptide stapling and/or macrocyclization, where a structural motif is used to improve the properties of amino acid sequences (e.g. protease resistance, cellular penetration, biological activity). Also within the scope of the disclosure are methods for unstapling the S,S-tetrazine-containing amino acid sequence. The disclosure is also directed to methods for the reductive removal of thiocyanates from an amino acid sequence with cysteine to recycle back to the native amino acid sequence.
Compounds, compositions, and methods for labeling membranes are disclosed. Compounds of formula G-L-E are described wherein G is a lipophilic group, L is a cleavable linkage and E is an electrophoretic group. The compounds become associated with membranes, and can be cleaved with a cleavage-inducing moiety thereby releasing the detectable electrophoretic group.
Peptide/Protein Stapling and Unstapling: Introduction of <i>s</i>-Tetrazine, Photochemical Release, and Regeneration of the Peptide/Protein
作者:Stephen P. Brown、Amos B. Smith
DOI:10.1021/ja512880g
日期:2015.4.1
Protocols have been achieved that permit facile introduction of s-tetrazine into unprotected peptides and the protein, thioredoxin, between two cysteine sulfhydryl groups (i.e., staple), followed by photochemical release (i.e., unstaple) and regeneration of the peptide/protein upon removal of the cyano groups from the derived bisthiocyanate. The S,S-tetrazine macrocycles in turn provide a convenient handle for probe introduction by exploiting the inverse electron demand Diels-Alder reactivity of the tetrazine.