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PIM2 (gene)
Serine/threonine-protein kinase Pim-2 is an enzyme that in humans is encoded by the ''PIM2'' .〔(【引用サイトリンク】 url = http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=11040 )〕
PIM2 or Proviral Integrations of Moloney virus 2 is serine/threonine kinase that has roles in cell growth, proliferation, apoptosis, and regulation of signal transduction cascades.
== Structure ==
Thus far, most of the structural information pertaining to the PIM kinase family has been limited to PIM1. As a result, most of inhibitor development efforts has also been towards PIM1. PIM2 shares 55% sequence identity with PIM1, and the structure of PIM2 is quite closely related to PIM1. Like PIM1, PIM2 shows a bi-lobal kinase architecture with a constitutively active closed conformation. The main chain of both molecules is identical with the exception of two flexible regions in the N-terminal lobe.
The most significant structural difference between PIM1 and PIM2 is the absence of the terminal αJ helix in PIM2. The last 23 residues of PIM2 are quite different from PIM1, as PIM2 contains 6 proline residues in this region and is not believed to form the same tertiary structures. As a result, the absence of the interactions present in this region may increase flexibility in PIM2 within the N-terminal kinase lobe and contribute to the disordered regions of the PIM2 structure.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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