... proliferating c ells. We now report that NARG2 is a novel gene that encodes a nuclear protein that is conserved in mammals, but appears t o be absent in lowerorganisms. NARG2 contains repeats of ... indicate that NARG2 is usually locali zed to t he nucleus, t hat the canonicalNLS p lays a s upporting role in nuclear localization, and that there is p robably an N LS in NARG2 that is not currentlyrepresented ... overalldn/ds ratio for NARG2 is < 1, indicating that, on balance,this protein i s under evolutionary pressure to r esist aminoacid substitutions, a nd that it is likely to h ave a functionalimportance...