000 02869nab a22004337a 4500
001 G73895
003 MX-TxCIM
005 20211006080518.0
008 121211b |||p||p||||||| |z||| |
022 0 _a0027-8424
040 _aMX-TxCIM
082 0 4 _a93-064076
100 1 _aStraeten, D. van der
245 0 0 _aCloning, genetic mapping, and expression analysis of an Arabidopsis thaliana gene that encodes 1-aminocyclopropane-1-carboxylate synthase
260 _c1992
340 _aPrinted
500 _aill. references US (DNAL 500 N21P)
520 _aA genomic clone of one member of the Arabidopsis thaliana (L.) Heynh. 1-aminocyclopropane-1-carboxylate (ACC) synthase (S-adenosyl-L-methionine methylthioadenosine-lyase, EC 4.4.1.14) gene family (AT-ACC1) was isolated and sequenced. A region of homology was found in the 5'-untranslated region with the promoter of a zucchini and a tomato ACC synthase gene. Comparison of its primary structure with other ACC synthases revealed conservation of seven peptide regions as well as similarity with 11 amino acids of the catalytic site of aminotransferases. Genomic DNA gel blotting suggested the existence of an ACC synthase multigene family in Arabidopsis, possibly with three other members, none of which is very closely related to AT-ACC1. The existence of at least one other gene was confirmed by the isolation of a cDNA (AT-ACC2) from a flower-specific cDNA library. The AT-ACC1 gene was mapped on the Arabidopsis restriction fragment length polymorphism map and is located on the top of chromosome 1. This position does not correspond to any known mutation on the genetic map. Expression of the AT-ACC1 gene was studied by reverse transcription-PCR on total RNA. Messenger accumulation was strong in young leaves and flowers. The gene was not induced by wounding of young leaves or in seedlings in the presence of auxin. Ethylene exposure of mature plants led to an induction of AT-ACC1 gene expression. It is suggested that AT-ACC1 protein has a role in developmental control of ethylene synthesis
546 _aEnglish
595 _aAC
650 1 0 _aBiochemical reactions
650 1 0 _aCell structure
650 1 0 _aChemical reactions
650 1 0 _aChromosomes
650 1 0 _aEnzymes
650 1 7 _aGenomes
_gAGROVOC
_2
_91131
650 1 0 _aHydrocarbons
650 1 0 _aNucleus
650 1 7 _aPlant genetics and breeding
_gNOT IN AGROVOC
_2
_91208
650 1 0 _aPlant physiology and biochemistry
650 1 0 _91130
_aGenetics
_gAGROVOC
700 1 _aGoodman, H.M.,
_ecoaut.
700 1 _aHanley, S.,
_ecoaut.
700 1 _aMontagu, M. van,
_ecoaut.
700 1 _aRodrigues Pousada, R.A.,
_ecoaut.
700 1 _aVillarroel, R.,
_ecoaut.
773 0 _tProceedings of the National Academy of Sciences of the United States of America (USA). (15 Oct 1992). v. 89(20) p. 9969-9973
942 _cJA
999 _c21799
_d21799