Purity ~90% (SDS-PAGE). Plays a fundamental role in microtubule-organizing center structure and function. Component of the TREX-2 complex (transcription and export complex 2), composed of at least ENY2, GANP, PCID2, DSS1, and either centrin CETN2 or CETN3. The TREX-2 complex functions in docking export-competent ribonucleoprotein particles (mRNPs) to the nuclear entrance of the nuclear pore complex (nuclear basket). TREX-2 participates in mRNA export and accurate chromatin positioning in the nucleus by tethering genes to the nuclear periphery. Source: Recombinant protein corresponding to aa1-167 from human CETN3, fused to GST-Tag at N-terminal, expressed in E. coli. Molecular Weight: ~46.5kD AA