sp|Q58089|Y676_METJA Putative hydrogenase expression/formation protein MJ0676 OS=Methanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440) OX=243232 GN=MJ0676 PE=3 SV=1