title: Photoactive Spatial Proximity Probes for Binding Pairs with Epigenetic Marks.
abstract: A new strategy for encoding polypeptide libraries with photolabile tags is developed. The photoassisted assay, based on conditional release of encoding tags only from bound pairs, can differentiate between peptides which have minor differences in a form of post-translational modifications with epigenetic marks. The encoding strategy is fully compatible with automated peptide synthesis. The encoding pendants are compact and do not perturb potential binding interactions.
authors.affiliation: Department of Chemistry and Biochemistry, University of Denver, Denver, CO 80208.
authors.forename: Roman N
authors.initials: RN
authors.lastname: Ezhov
authors.affiliation: Department of Chemistry and Biochemistry, University of Denver, Denver, CO 80208.
authors.forename: Greg A
authors.initials: GA
authors.lastname: Metzel
authors.affiliation: Department of Chemistry and Biochemistry, University of Denver, Denver, CO 80208.
authors.forename: Olga A
authors.initials: OA
authors.lastname: Mukhina
authors.affiliation: Department of Pharmacology, University of Colorado School of Medicine, Aurora, CO 80045.
authors.forename: Catherine A
authors.initials: CA
authors.lastname: Musselman
authors.affiliation: Department of Pharmacology, University of Colorado School of Medicine, Aurora, CO 80045.
authors.forename: Tatiana G
authors.initials: TG
authors.lastname: Kutateladze
authors.affiliation: Department of Chemistry and Biochemistry, University of Denver, Denver, CO 80208.
authors.forename: Tiffany P
authors.initials: TP
authors.lastname: Gustafson
authors.affiliation: Department of Chemistry and Biochemistry, University of Denver, Denver, CO 80208.
authors.forename: Andrei G
authors.initials: AG
authors.lastname: Kutateladze
keywords: conditional photorelease of tags; encoded combinatorial library; epigenetic marks; spatial proximity test