Function:Could play a role in phagocytic activities of tissue macrophages , both in intracellular lysosomal metabolism and extracellular cell-cell and cell-pathogen interactions. Bind to tissue- and organ-specific lectins or selectins , allowing homing of macrophage subsets to particular sites. Rapid recirculation of CD68 from endosomes , lysosomes to the plasma membrane may allow macrophages to crawl over selectin bearing substrates or other cells. ,PTM:N- and O-glycosylated. ,similarity:Belongs to the LAMP family. ,tissue specificity:Highly expressed by blood monocytes and tissue macrophages. Also expressed in many tumor cell lines which could allow them to attach to selectins on vascular endothelium , facilitating their dissemination to secondary sites. ,
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