show Abstracthide Abstract<P> <B><I>Thermotoga petrophila</I> strain RKU-1</B>. <I>Thermotoga petrophila</I> strain RKU-1 is an anaerobic thermophile, isolated from the production waters of the Kubiki oil reservoir in Niigata, Japan. This organism is the type strain for this species and is being sequenced in conjunction with other <I>Thermotogales</I> for comparative analysis.