Peptide sequence: LDFISIMTYD FHGAWRGTTG HHSPLFRGQE DASPDRFSNT DYAVGYMLRL Sequence homology: Cow: 92%; Dog: 77%; Goat: 92%; Human: 100%; Pig: 92%; Rabbit: 100%; Rat: 77%. Human cartilage glycoprotein 39 (GP-39), also known as YKL-40, is a glycoprotein sec