The present invention relates to polypeptides having carboxypeptidase activity and isolated nucleic acid sequences encoding the polypeptides. The polymers of the invention comprise one or more repeating units represented by the formula :Wherein m, X, R1 and R2 are as defined herein. The sensor effectively prevents a gas from emanating from the wiring board and the protective cap. The multi-database server designates a range to be decrypted at the time of acquiring and integrating respective result tables.