Provided herein are methods for preparing and treating an analyte (e.g., a macromolecule or a plurality of macromolecules, peptides, polypeptides, and proteins) for analysis. In some embodiments, the analyte is prepared and treated in a method that includes the use of bait and capture nucleic acids, solid supports, and reaction mixtures including the bait and capture nucleic acids. In some embodiments, the analyte is coupled to a solid support. Also provided are kits containing components for performing the provided methods for preparing the analytes. In some embodiments, the methods are for preparing an analyte for sequencing. Provided herein are methods for preparing and treating an analyte (e.g., a macromolecule or a plurality of macromolecules, peptides, polypeptides, and proteins) for analysis. In some embodiments, the analyte is prepared and treated in a method that includes the use of bait and capture nucleic acids, solid supports, and reaction mixtures including the bait and capture nucleic acids. In some embodiments, the analyte is coupled to a solid support. Also provided are kits containing components for performing the provided methods for preparing the analytes. In some embodiments, the methods are for preparing an analyte for sequencing.