title: A general route for post-translational cyclization of mRNA display libraries.
abstract: Cyclic peptides are attractive scaffolds for the design of conformationally constrained molecular therapeutics. Previously, biological display libraries could only be cyclized via disulfide bonds, which are labile and can be reduced in an intracellular environment. In this paper, we construct high diversity, covalently cyclized mRNA display libraries (>1013 sequences) and analyze the cyclization reaction using MALDI-TOF MS and unnatural amino acid incorporation. Our route allows the extent of cyclization to be evaluated quantitatively and is broadly applicable to a variety of cyclization chemistries.
authors.affiliation: Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA.
authors.forename: Steven W
authors.initials: SW
authors.lastname: Millward
authors.forename: Terry T
authors.initials: TT
authors.lastname: Takahashi
authors.forename: Richard W
authors.initials: RW
authors.lastname: Roberts
mesh_terms: D003500:Cyclization; D015394:Molecular Structure; D020411:Oligonucleotide Array Sequence Analysis; D019151:Peptide Library; D011499:Protein Processing, Post-Translational; D012333:RNA, Messenger / Q000737:chemistry*; D012260:Ribonucleases / Q000737:chemistry
chemical_list: D019151:Peptide Library; D012333:RNA, Messenger; D012260:Ribonucleases