PMC:2728246 / 7669-8085 JSONTXT

{"project":"2_test","denotations":[{"id":"19652920-10467150-56190939","span":{"begin":105,"end":109},"obj":"10467150"}],"text":"Wild-type 15N,13C-labeled human ubiquitin was expressed according to a previous protocol (Johnson et al. 1999) and dispersed in 13 different alignment conditions for RDC measurements. Sample conditions for which datasets 1 through 10 were collected have already been described by (Lakomek et al. 2008a). Datasets 12 and 13 are obtained from additional alignments (positive gel and Pf1 phage) not previously reported."}