Task: Text Categorization
Input (English): This compound consists of A and B chains linked together by three disulfide bonds, which are conserved through most species, particularly the C-terminal residues of the B chain. Existing naturally as a monomer or dimer, lispro is a commercial hexamer of this enzyme that facilitates slow diffusion in the blood. It works by binding to specific tyrosine kinase receptors in target cells, causing glucose transporters to fuse with plasma membranes. Secreted by the islets of Langerhans, FTP, identify this enzyme important in regulating the body's sugar levels.
Output (English): Science