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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
2
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pubmed:dateCreated |
2010-6-29
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pubmed:abstractText |
Etiolated Avena sativa L. seedlings grown in the presence of gabaculine (5-amino-1,3-cyclohexadienylcarboxylic acid) contained reduced levels of phytochrome as shown by spectrophotometric and immunochemical assays. Photochromic phytochrome levels in gabaculine-grown plants were estimated to be 20% of control plants, while immunoblot analysis showed that the phytochrome protein moiety was present at approximately 50% of control levels. Gabaculine-grown seedlings administered either 5-aminolevulinic acid or biliverdin exhibited a rapid increase of spectrophotometrically detectable phytochrome. Phytochrome concentrations estimated immunochemically did not similarly increase throughout treatment with either compound. Similar experiments with 5-amino[4-(14)C] levulinic acid showed radiolabeling of phytochrome with kinetics that paralleled the spectrally detected increase. These results are consistent with (a) the intermediacy of both 5-aminolevulinic acid and biliverdin in the biosynthetic pathway of the phytochrome chromophore and (b) the lack of coordinate regulation of chromophore and apoprotein synthesis in Avena seedlings.
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pubmed:commentsCorrections |
http://linkedlifedata.com/resource/pubmed/commentcorrection/16665435-16578769,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16665435-16656178,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16665435-16662156,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16665435-16662257,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16665435-16664094,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16665435-16664935,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16665435-3882693,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16665435-388439,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16665435-5432063,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16665435-6161559,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16665435-6295446,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16665435-6416181,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16665435-6743252,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16665435-6847617,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16665435-6855600,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16665435-6885811,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16665435-7072935,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16665435-7304986,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16665435-7458909,
http://linkedlifedata.com/resource/pubmed/commentcorrection/16665435-972233
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pubmed:language |
eng
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pubmed:journal |
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pubmed:status |
PubMed-not-MEDLINE
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pubmed:month |
Jun
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pubmed:issn |
0032-0889
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pubmed:author |
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pubmed:issnType |
Print
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pubmed:volume |
84
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
304-10
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pubmed:dateRevised |
2010-9-15
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pubmed:year |
1987
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pubmed:articleTitle |
Phytochrome Chromophore Biosynthesis : Both 5-Aminolevulinic Acid and Biliverdin Overcome Inhibition by Gabaculine in Etiolated Avena sativa L. Seedlings.
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pubmed:affiliation |
Department of Biochemistry and Biophysics, University of California, Davis, California 95616.
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pubmed:publicationType |
Journal Article
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