Physiological characteristics of the extreme thermophile Caldicellulosiruptor saccharolyticus: an efficient hydrogen cell factory

Table 4 The type of transport system with respect to growth temperature.

Organism	Opt T °C	Transporters	Reference
Enterobacter aerogenes	37	PTS	[107]
Enterobacter cloacae	37	PTS	[107]
Clostridium butyricum	30	PTS	This study
Clostridium acetobutylicum	34	PTS	[108]
Clostridium thermocellum	60	ABC	[109]
C. saccharolyticus	70	ABC	[26]
Thermotoga neopolitana	77	ABC	[110]
Thermoanaerobacter tengcongensis	75	ABC	This study
Thermoanaerobacter pseudoethanolicus	70	PTS	This study
Pyrococcus furiosus	90	ABC	This study

A selection of mesophilic, thermophilic and extreme thermophilic H₂-producing strains, showing their optimal growth temperature, H₂ yields and type of glucose transport. The type of glucose transport assigned to each organism was either retrieved from literature or based on bioinformatic analysis (This study) using the Integrated Microbial Genomes (IMG) database http://img.jgi.doe.gov/

ISSN: 1475-2859