ADAMTS2, A disintegrin and metalloproteinase with thrombospondin motifs 2, also known as procollagen I N-proteinase (PC I-NP), is an enzyme that in humans is encoded by the ADAMTS2 gene. The ADAMTS2 gene contains 22 exons. The human ADAMTS2 gene is mapped to chromosome 5q23-q24 by analysis of somatic cell hybrids. ADAMTS2 is responsible for processing several types of procollagen proteins. Procollagens are the precursors of collagens, the proteins that add strength and support to many body tissues. Specifically, this enzyme clips a short chain of amino acids off one end of the procollagen. This clipping step is necessary for collagen molecules to function normally and assemble into fibrils outside cells.