Domain:A pair of annexin repeats may form one binding site for calcium and phospholipid. ,Function:Calcium-regulated membrane-binding protein whose affinity for calcium is greatly enhanced by anionic phospholipids. It binds two calcium ions with high affinity. May be involved in heat-stress response. ,miscellaneous:It may cross-link plasma membrane phospholipids with actin and the cytoskeleton and be involved with exocytosis. ,online information:Red velvet - Issue 86 of September 2007 ,PTM:Phosphorylation of Tyr-24 enhances heat stress-induced translocation to the cell surface. ,similarity:Belongs to the annexin family. ,similarity:Contains 4 annexin repeats. ,subcellular location:In the lamina beneath the plasma membrane. Identified by mass spectrometry in melanosome fractions from stage I to stage IV. Translocated from the cytoplasm to the cell surface through a Golgi-independent mechanism. ,subunit:Heterotetramer containing 2 light chains of S100A10/p11 and 2 heavy chains of ANXA2/p36. Interacts with ATP1B1 and DYSF. ,
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