PsbO,PsbP, and PsbQ of photosystem II are encoded by gene families in <Emphasis Type="Italic">Nicotiana benthamiana</Emphasis>. Structure and functionality of their isoforms |
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Authors: | Email author" target="_blank">M?L?Pérez-BuenoEmail author M?Barón I?García-Luque |
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Institution: | (1) Department of Biology, Washington University, St. Louis, MO 63130, USA; |
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Abstract: | The extrinsic proteins of photosystem II in plants (PsbO, PsbP and PsbQ) are known to be targets of stress. In previous work,
differential regulation of hypothetical isoforms of these proteins was observed in Nicotiana benthamiana upon viral infection. Each of these proteins is encoded by a multigene family in this species: there are at least four genes
encoding PsbO and PsbP and two encoding PsbQ. The results of structural and functional analyses suggest that PsbO and PsbP
isoforms could show differences in activity, based on significant substitutions in their primary structure. Two psbQ sequences
were isolated which encode identical mature proteins. |
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Keywords: | |
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