Immunological relationship among hydrogenases
- 1 January 1989
- journal article
- research article
- Published by American Society for Microbiology in Journal of Bacteriology
- Vol. 171 (1) , 430-435
- https://doi.org/10.1128/jb.171.1.430-435.1989
Abstract
We examined the immunological cross-reactions of 11 different hydrogenase antigens with 9 different hydrogenase antibodies. Included were antibodies and antigens of both subunits of the hydrogenases of Bradyrhizobium japonicum and Thiocapsa roseopersicina. The results showed a strong relationship among the Ni-Fe dimeric hydrogenases. The two subunits of Ni-Fe dimeric hydrogenases appeared immunologically distinct: specific interactions occurred only when antibodies to the 60- and 30-kilodalton subunits reacted with the 60- and 30-kilodalton-subunit antigens. The interspecies cross-reactions suggested that at least one conserved protein region exists among the large subunits of these enzymes, whereas the small subunits are less conserved. Antibodies to the Fe-only bidirectional hydrogenase of Clostridium pasteurianum reacted with the Desulfovibrio vulgaris bidirectional hydrogenase. Surprisingly, antibodies to the clostridial uptake hydrogenase did not react with any of the Fe-only bidirectional hydrogenases but did react with several of the Ni-Fe dimeric hydrogenases. The two hydrogenases from C. pasteurianum were found to be quite different immunologically. The possible relationship of these findings to the structure and catalytic functions of hydrogenase are discussed.This publication has 28 references indexed in Scilit:
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