Cloning and Sequence of the L2Form of RubisCO from a Marine Obligately Autotrophic Hydrogen-oxidizing Bacterium,Hydrogenovibrio marinusStrain MH-110

Abstract
A form II ribulose-l, 5-bisphosphate carboxylase/oxygenase (RubisCO) gene was isolated and sequenced from a marine hydrogen-oxidizing bacterium, Hydrogenovibrio marinus strain MH-110. To our knowledge, this is the first report for the sequence of a form II (L2-form) RubisCO gene derived from a chemolithoautotrophic bacterium. The form II RubisCO gene coded for 463 amino acid residues (1389 bp, Mr=50,655). The deduced amino acid sequence had high homology with those of the L2-form RubisCO of Rhodospirillum rubrum (63%) and the L4-form RubisCO from Rhodobacter sphaeroides (62%), but low similarity to other L8S8 form RubisCOs (under 40%).

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