a series of cosmids containing a hydrogen uptake ( hup ) gene was identified by transferring the gene bank into a h ( 2 ) uptake-negative ( hup ( - ) ) r. japonicum point mutant ( pj17nal ) and screening tetracycline-resistant colonies for the ability to grow chemolithotrophically and to reduce methylene blue in a recently devised colony assay .
C0020275
hydrogen
C0011744
h ( 2