Sequence of ptb1, a Gene for the β subunit of the type-II geranylgeranyltransferase from the fission yeast Schizosaccharomyces pombe

We have isolated and sequenced the ptb1 gene from the fission yeast Schizosaccharomyces pombe. Sequence analysis suggests that Ptb1 is the β subunit of the type-II geranylgeranyltransferase that is responsible for geranylgeranylation of the Rab-like YPT proteins in this yeast. The sequence has been deposited in the EMBL data library under the Accession Number X92183.