The use of genetics to cross different mutant lines should play an increasing role in further development of this technology. In our view, a mutant expressing a more O2-tolerant hydrogenase, such as the Clostridium acetobutylicum Ca1, the pgrl1 mutation, a truncated antenna, and an inducible Fd/hydrogenase fusion, represents one of the most promising genetic combinations to achieve long-term high-efficiency H2-producing activity, selleckchem at this juncture. Obviously, other mutant constructs, containing for instance O2 sequesters
and other proton gradient dissipators, are equally promising and worth pursuing. This research area is expanding rapidly, based on the premise and promise of a cost-effective carbon-neutral energy technology. Acknowledgments We thank Dr. Matt Wecker for Fig. 2 courtesy, Al Hicks for
his help with Defactinib clinical trial Fig. 1, and Tami Baldwin for formatting the document. This work was supported by the Office of Science (BER), U. S. Department of Energy (MLG and AD). Open AccessThis article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. References Antal T, Mattila H, Hakala-Yatkin M, Tyystjarvi T, Tyystjarvi E (2010) Acclimation of photosynthesis to nitrogen deficiency
in Phaseolus vulgaris. Planta 232(4):887–898. doi:10.1007/s00425-010-1227-5 PubMedCrossRef Chang C, King P, Ghirardi M, Kim K (2007) Atomic resolution Modeling of the ferredoxin :[FeFe] hydrogenase complex from Chlamydomonas reinhardtii. Biophys J 93(9):3034–3045. doi:10.1529/Selleck MDV3100 biophysj.107.108589 PubMedCentralPubMedCrossRef Chen H, Newton A, Melis A (2005) Role of SulP, a nuclear-encoded chloroplast sulfate Silibinin permease, in sulfate transport and H-2 evolution in Chlamydomonas reinhardtii. Photosynth Res 84(1–3):289–296. doi:10.1007/s11120-004-7157-y PubMedCrossRef Chien L, Kuo T, Liu B, Lin H, Feng T, Huang C (2012) Solar-to-bioH2 production enhanced by homologous overexpression of hydrogenase in green alga Chlorella sp. DT. Int J Hydrogen Energy 37(23):17738–17748CrossRef Chochois V, Constans L, Dauvillée D, Beyly A, Solivérès M, Ball S, Peltier G, Cournac L (2010) Relationships between PSII-independent hydrogen bioproduction and starch metabolism as evidenced from isolation of starch catabolism mutants in the green alga Chlamydomonas reinhardtii. Int J Hydrogen Energy 35(19):10731–10740CrossRef Chu H, Nguyen A, Debus R (1995) Amino acid residues that influence the binding of manganese or calcium to photosystem II. 1. The luminal inter-helical domains of the D1 polypeptide.