Complete Genome Sequence of the Hyperthermophilic and Piezophilic Archeon Thermococcus piezophilus CDGS ^T , Able To Grow under Extreme Hydrostatic Pressures

Abstract

We report the genome sequence of Thermococcus superprofundus strain CDGST, a new piezophilic and hyperthermophilic member of the order Thermococcales isolated from the world’s deepest hydrothermal vents, at the Mid-Cayman Rise. The genome is consistent with a heterotrophic, anaerobic, and piezophilic lifestyle.

Adaptations of archaeal and bacterial membranes to variations in temperature, pH and pressure

“…For piezophilic bacteria and archaea, a slight difference is observed between their survival boundaries, although this is only based on studies of the bacterium Colwellia sp. MT-41(pressure max = 103 MPa)(Yayanos et al 1981 ) and of the archaeon Thermococcus piezophilus (pressure max = 130 MPa) (Dalmasso et al 2016 ) (Fig. 5 ).…”

Apolar Polyisoprenoids Located in the Midplane of the Bilayer Regulate the Response of an Archaeal-Like Membrane to High Temperature and Pressure

“…Life has been found at some of the most extreme conditions on Earth such as temperatures above 100 • C and pressures up to 120 MPa (Yayanos et al, 1981;Takai et al, 2008;Zeng et al, 2009;Dalmasso et al, 2016;Siliakus et al, 2017). All aspects of these organisms must be specially adapted to tolerate such conditions.…”

Data_Sheet_1.docx

“…The presence of the Fdh2-Mfh2-Mnh2 gene cluster together with the one encoding a formate transporter suggests that T. piezophilus could metabolize formate. This was not observed experimentally at atmospheric pressure (Dalmasso et al, 2016a), likely because growth on formate was tested at 75 • C, under conditions where the reaction was probably not exergonic (Kim et al, 2010).…”