Abstract
A cDNA clone of the gene Lhca2 encoding a photosystem I (PSI) type II chlorophyll a/b-binding protein was isolated from Arabidopsis thaliana. The isolation of this, the fourth PSI cab gene from Arabidopsis, confirms a previous report [1] that indicated Arabidopsis may contain all four PSI cab genes identified in other plant species. Lhca2 is a single-copy gene as are the other known Arabidopsis PSI cab genes. The patterns of developmental expression and tissue-specific regulation of Lhca2 are similar to those of other PSI and PSII cab genes, but the light induction pattern and the steady-state mRNA level of Lhca2 are distinct. This suggests that a different mechanism may be employed to regulate the expression of Lhca2.
Publication types
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Comparative Study
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Research Support, Non-U.S. Gov't
MeSH terms
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Amino Acid Sequence
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Arabidopsis / genetics*
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Arabidopsis / radiation effects
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Arabidopsis Proteins*
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Chlorophyll
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Chlorophyll Binding Proteins
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Genes, Plant / genetics*
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Light
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Light-Harvesting Protein Complexes*
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Molecular Sequence Data
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Multigene Family / genetics
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Photosynthetic Reaction Center Complex Proteins / genetics*
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Photosynthetic Reaction Center Complex Proteins / radiation effects
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Photosystem I Protein Complex
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Plant Proteins / genetics*
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RNA, Messenger / analysis
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Sequence Homology, Amino Acid
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Tissue Distribution
Substances
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Arabidopsis Proteins
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Chlorophyll Binding Proteins
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Lhca2 protein, Arabidopsis
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Light-Harvesting Protein Complexes
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Photosynthetic Reaction Center Complex Proteins
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Photosystem I Protein Complex
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Plant Proteins
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RNA, Messenger
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Chlorophyll