Literature DB >> 7826334

Polyamines in chloroplasts: identification of their glutamyl and acetyl derivatives.

S Del Duca1, S Beninati, D Serafini-Fracassini.   

Abstract

Incubation of chloroplasts of Helianthus tuberosus with labelled putrescine and/or spermidine and proteolytic digestion of their trichloroacetate-soluble and -insoluble proteins revealed the presence of N-(gamma-glutamyl)-putrescine, N1,N4-bis-(gamma-glutamyl)-putrescine and N1,N8-bis-(gamma-glutamyl)spermidine. This finding may be regarded as unequivocal proof of the presence of transglutaminase activity in chloroplasts. In addition, the recovery of spermidine or putrescine and acetylspermidine from chloroplasts incubated with [3H]putrescine or [3H]spermidine respectively indicates the existence of biosynthetic and oxidative pathways. These results suggest that polyamines may have an important function in chloroplasts both in their free form and by covalently binding to proteins.

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Year:  1995        PMID: 7826334      PMCID: PMC1136454          DOI: 10.1042/bj3050233

Source DB:  PubMed          Journal:  Biochem J        ISSN: 0264-6021            Impact factor:   3.857


  18 in total

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5.  Oxidation of spermidine and spermine in rat liver: purification and properties of polyamine oxidase.

Authors:  E Hölttä
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7.  Presence of di- and polyamines covalently bound to protein in rat liver.

Authors:  S Beninati; M Piacentini; M P Argento-Cerù; S Russo-Caia; F Autuori
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8.  Gas chromatographic-mass spectrometric analysis of polyamines and polyamine conjugates.

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  17 in total

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7.  Suborganellar localisation and effect of light on Helianthus tuberosus chloroplast transglutaminases and their substrates.

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8.  Bridging the gap between plant and mammalian polyamine catabolism: a novel peroxisomal polyamine oxidase responsible for a full back-conversion pathway in Arabidopsis.

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9.  A Zea mays 39-kDa thylakoid transglutaminase catalyses the modification by polyamines of light-harvesting complex II in a light-dependent way.

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10.  Effects of polyamines on histone polymerization.

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