In the article by Lee et al. published in the Journal of Microbiology 2013; 51, 639-643. Acknowledgement should appear as shown below. This work was supported by the National Research Foundation of Korea Grant NRF-2012R1A2A2A02005978, the CAP through Korea Research Council of Fundamental Science Technology (KRCF), Korea Institute of Science and Technology (KIST), & Korea Institute of Ocean Science and Technology (KIOST), the Marine and Extreme Genome Research Center program, and the Development of Biohydrogen Production Technology Using Hyperthermophilic Archaea program of MOF. Works performed at Hanyang University were supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (MEST) (KRF-2008-313-C00774).