>sp|Q07956|USF_STRPU Upstream stimulatory factor OS=Strongylocentrotus purpuratus MDVQDHTLDQGPQDKDKDLEEEVTVHLTADGDQVVQDPSGEGPFAENIQYQFRTDSNGQS QVTYRVVQVGDNETNPQAVVTTFPQGHQALTQVIQGSFNGESPTSESQGGETRFTYFPAS AAIPGDGAGPASGGEQQPGITQPSGAAGGQFYVMMSPQDVLQGASQRTIAPRTHQFNTKI DNSRTVRDERRRATHNEVERRRRDKINNWIVKLSKIIPDCNIDHSKQGQSKGGILTKTCD YIHDLRNSNTRMAKASRIRKGSPST