The characteristics which do not belong to proteins is option A: can self-replicate.
DNA is the only molecule capable of self-replication. It is a nucleotide and not a protein. Characteristics other than option A are all those of proteins. Proteins act as a hormone, for eg Insulin. They can act in cell membranes trafficking. For example, SNARE proteins. They can also bind foreign materials, as antibodies.
The body uses the large, complex molecules known as proteins for a number of essential processes. They are crucial for the structure, operation, and control of the body's tissues and organs and carry out the majority of their job inside cells. Proteins are basically made up of amino acids, linked together to form long chains.
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