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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
22/09/1992 |
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Data da última atualização: |
22/09/1992 |
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Autoria: |
KOHL, D. H.; SCHUBERT, K. R.; CARTER, M. B.; HAGEDORN, C. H.; SHEARER, G. |
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Afiliação: |
Department of Biology, Washington University, St. Louis, MO 63130. |
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Título: |
Proline metabolism in N2-fixing root nodules: Energy transfer and regulation of purine synthesis. |
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Ano de publicação: |
1988 |
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Fonte/Imprenta: |
Proceedings National Academy of Science, v.85, p.2036-2040. 1988. |
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Idioma: |
Inglês |
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Conteúdo: |
N2-fixing root nodules of soybean (Glycine max L. Merr.) convert atmospheric N2 to ammonia(um) in an energy-intensive enzymatic reaction. These nodules synthesize large quantities of purines because nitrogen fixed by bacteria contained within trhis tissue in transferred to the shoots in the form of ureides, which are degradation products of purines. In animal systems, it has been proposed that proline biosynthesis by pyrroline-5-carbosylate reductase (P5CR) is used to generate the NADP+ required for the synthesis of the purine precursor ribose 5-phosphate. We have examined the levels, properties, and location of P5CR and proline dehydrogenase (ProDH) in soybean nodules. Nodule PeCR was found in the plant cytosol. Its activity was substantially higher than that |
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Palavras-Chave: |
C; Fixacao; Fixation; N; N2; Purine; Soybean. |
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Thesagro: |
Bradyrhizobium Japonicum; Glycine Max; Metabolismo; Nodulação; Prolina; Purina; Soja. |
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Thesaurus Nal: |
metabolism; nodulation; proline. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01698naa a2200373 a 4500
001 1457857
005 1992-09-22
008 1988 bl --- 0-- u #d
100 1 $aKOHL, D. H.
245 $aProline metabolism in N2-fixing root nodules$bEnergy transfer and regulation of purine synthesis.
260 $c1988
520 $aN2-fixing root nodules of soybean (Glycine max L. Merr.) convert atmospheric N2 to ammonia(um) in an energy-intensive enzymatic reaction. These nodules synthesize large quantities of purines because nitrogen fixed by bacteria contained within trhis tissue in transferred to the shoots in the form of ureides, which are degradation products of purines. In animal systems, it has been proposed that proline biosynthesis by pyrroline-5-carbosylate reductase (P5CR) is used to generate the NADP+ required for the synthesis of the purine precursor ribose 5-phosphate. We have examined the levels, properties, and location of P5CR and proline dehydrogenase (ProDH) in soybean nodules. Nodule PeCR was found in the plant cytosol. Its activity was substantially higher than that
650 $ametabolism
650 $anodulation
650 $aproline
650 $aBradyrhizobium Japonicum
650 $aGlycine Max
650 $aMetabolismo
650 $aNodulação
650 $aProlina
650 $aPurina
650 $aSoja
653 $aC
653 $aFixacao
653 $aFixation
653 $aN
653 $aN2
653 $aPurine
653 $aSoybean
700 1 $aSCHUBERT, K. R.
700 1 $aCARTER, M. B.
700 1 $aHAGEDORN, C. H.
700 1 $aSHEARER, G.
773 $tProceedings National Academy of Science$gv.85, p.2036-2040. 1988.
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Registro original: |
Embrapa Soja (CNPSO) |
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