Production and oxidation of indole by Haemophilus influenzae.

During growth in high concentrations of iron nitrate, H. influenzae produces compounds reactive in biochemical assays for hydroxamates. Mixing experiments established that nitrate was responsible for inducing these compounds.

A novel approach to insertional mutagenesis of Haemophilus influenzae.

Insertional mutagenesis of the Haemophilus influenzae chromosome was accomplished by a novel method employing a 2.2-kbp element, TSTE. This element, consisting of the neo gene of Tn5 flanked by Haemophilus-specific uptake sequences, was ligated to circularized chromosomal fragments before transformation into the homologous strain.

Ribosomal RNA of the primitive eukaryote Giardia lamblia: large subunit domain I and potential processing signals.

The cytoplasmic ribosomal RNA (rRNA) from the intestinal protozoan, Giardia lamblia, is unusually short; the large subunit (LS) and small subunit RNA and the 5.8S RNA are only 70-80% of the length found in typical protozoa, and are even smaller than most of their prokaryotic counterparts. Flanking regulatory DNA and processed rRNA sequences are similarly compact in size.