Transcription of the Xenopus laevis selenocysteine tRNA(Ser)Sec gene: a system that combines an internal B box and upstream elements also found in U6 snRNA genes.

摘要: Abstract The transcription mode of the Xenopus tRNA(Ser)Sec gene by RNA polymerase III was deciphered injection mutant templates into oocyte nuclei. represents paradigm a new class genes combining tRNA and U snRNA regulatory elements. Its promoter is tripartite, constituted two upstream elements, PSE TATA motif that are interchangeable with those U6 an internal box B as in other tRNAs. The enables level dependent on to be increased. Data obtained indicate U1 (Pol II) III) share at least one factor, implying border between systems less tight than expected.