Kits for analysis using nucleic acid encoding and/or label

A kit, comprising:

• (a) a recording polymer configured to associate directly or indirectly with an analyte;
• (b) (i) a coding polymer which comprises identifying information regarding a binding moiety capable of binding to the analyte, and which is configured to associate directly or indirectly with the binding moiety to form a binding agent, and/or (ii) a label,
• wherein the recording polymer and the coding polymer are configured to allow transfer of information between them, upon binding between the binding agent and the analyte;
• and
• optionally (c) the binding moiety.

A kit, comprising:

• at least (a) one or more binding agents each comprising (i) a binding moiety capable of binding to an N-terminal amino acid (NTAA) or a functionalized NTAA of a polypeptide to be analyzed, and (ii) a coding polymer comprising identifying information regarding the binding moiety, and/or
• (b) one or more recording polymers configured to associate directly or indirectly with the polypeptide,
• wherein the one or more recording polymers and the one or more binding agents are configured to allow transfer of information between the coding polymers and the recording polymers, upon binding between each binding agent and the polypeptide, and
• optionally (c) a functionalizing reagent capable of modifying a first NTAA of the polypeptide to generate a first functionalized NTAA.