羧肽酶B是一种消化酶。可专一性地从肽链的C端开始逐个降解，释放出游离氨基酸的一类肽链外切酶。以酶原形式存在于生物体内。
Carboxypeptidase B is a digestive enzyme. A class of exonuclease enzymes that can be specifically degraded one by one from the C-end of the peptide chain to release free amino acids. Present in living organisms in the form of zymogen.
