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Description
Purified anti-human TSPAN33 (BAAM). TSPAN33, also known as BAAM, is a 32 kDa protein member of the TM4 superfamily (TM4SF). TSPAN33 have four transmembrane regions and two extracellular loops, one of them is a cysteine-rich long extracellular loop (LEL), characteristic of the TM4SF. TSPAN33 interacts with different molecules such as integrins and other tetraspanins. TSPAN33 is expressed by activated B cells, some B cell lymphomas, macrophages and in cells from the convoluted tubules and collecting ducts in the kidney. In macrophages TSPAN33 modulates TLR-induced proinflammatory gene expression, but its function in other cells is unknown.