Cell and tissue research
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Cell and tissue research · Nov 2014
Expression of nucleobindin 1 (NUCB1) in pancreatic islets and other endocrine tissues.
The protein nucleobindin 1 (NUCB1; also known as CALNUC or Nuc) contains an intriguing combination of DNA- and calcium-binding motifs, a trait that it shares with the protein nucleobindin 2 (NUCB2; also known as nesfatin). NUCB2 has been implicated in several aspects of metabolic control and has been identified in a number of endocrine organs. No such comprehensive mapping of NUCB1 has been presented. ⋯ Where present, NUCB1 consistently appears to be associated with the Golgi apparatus. Thus, NUCB1 is broadly, but not ubiquitously, expressed in cells of the mouse endocrine system. Together with its location in the Golgi apparatus and its putative Ca(2+)-binding ability, this distribution suggests a role for NUCB1 in Ca(2+) handling/sensing in secretory cells.