PrefixProt , a method that was designed to overcome the scarcity of data, such as the limitation within 20 amino acid sequences; hindering the ability of creating flexible control tags. PrefixProt's concept is to employ prefix-tuning on each property resulting with tokens that are further used in prompting the Protein Language Model (PLM). Results demonstrated the ability of PrefixProt to flexibly and controllably provide higher-quality molecular design suggestions.