March 5 (Reuters) - U.S. stock index futures turned negative on Friday, with longer-dated Treasury yields jumping after data showed jobs growth accelerated at a faster-than-expected rate in February. At 8:32 a.m. ET, Dow E-minis were down 28 points, or 0.09%, S&P 500 E-minis were down 4.25 points, or 0.11% and Nasdaq 100 E-minis were down 56 points, or 0.45%. Minutes before the data, Dow E-minis were up 98 points, or 0.32%, S&P 500 E-minis were up 15.25 points, or 0.4% and Nasdaq 100 E-minis were up 47.5 points, or 0.38%. (Reporting by Medha Singh in Bengaluru; Editing by Maju Samuel)