CONSERVED SEQUENCE ELEMENTS INVOLVED IN REGULATION OF RIBOSOMAL-PROTEIN GENE-EXPRESSION IN HALOPHILIC ARCHAEA

A region of the Haloferax volcanii genome encoding ribosomal proteins L11e, Lie, L10e, and L12e was cloned and sequenced, and the transcript s derived from the cluster were characterized. Flanking and noncoding regions of the sequence were analyzed phylogenetically by comparison w ith the homologous sequences from two other halophilic archaea, i.e., Halobacterium cutirubrum and Haloarcula marismortui. Motifs, identifie d by high-level sequence conservation, include both transcriptional an d translational regulatory elements and other elements of unknown func tion.