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Pubmed ID :10972874
Publication Date : //

Abscisic aldehyde oxidase in leaves of Arabidopsis thaliana.


Abscisic acid (ABA) is a plant hormone involved in seed development and responses to various environmental stresses. Oxidation of abscisic aldehyde is the last step of ABA biosynthesis and is catalysed by aldehyde oxidase (EC 1.2.3.1). We have reported the occurrence of three isoforms of aldehyde oxidase, AOalpha, AObeta and AOgamma, in Arabidopsis thaliana seedlings, but none oxidized abscisic aldehyde. Here we report a new isoform, AOdelta, found in rosette leaf extracts, which efficiently oxidizes abscisic aldehyde. AO delta was specifically recognized by antibodies raised against a recombinant peptide encoded by AAO3, one of four Arabidopsis aldehyde oxidase genes (AAO1, AAO2, AAO3 and AAO4). Functionally expressed AAO3 protein in the yeast Pichia pastoris showed a substrate preference very similar to that of rosette AOdelta. These results indicate that AOdelta is encoded by AAO3. AOdelta produced in P. pastoris exhibited a very low Km value for abscisic aldehyde (0.51 microM), and the oxidation product was determined by gas chromatography-mass spectrometry to be ABA. Northern analysis showed that AAO3 mRNA is highly expressed in rosette leaves. When the rosette leaves were detached and exposed to dehydration, AAO3 mRNA expression increased rapidly within 3 h of the treatment. These results suggest that AOdelta, the AAO3 gene product, acts as an abscisic aldehyde oxidase in Arabidopsis rosette leaves.

Authors : Seo M , Koiwai H , Akaba S , Komano T , Oritani T , Kamiya Y , Koshiba T ,

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Catalog number Product name Quantity
CSB-RP141574pl Recombinant Arabidopsis thaliana Abscisic acid receptor PYL1 500ug
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AS12 1862 Antibody: ABI3 | ABSCISIC ACID INSENSITIVE 3, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana
AS12 1871 Antibody: ABI2 | ABSCISIC ACID INSENSITIVE 2, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana
AS12 1863 Antibody: ABI5 | ABSCISIC ACID INSENSITIVE 5, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana
AS12 1872 Antibody: ABI4 | ABSCISIC ACID INSENSITIVE 4, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana
AS12 1861 Antibody: ABI1 | ABSCISIC ACID INSENSITIVE 1, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana
AS07 258 Antibody: LOX-C | chloroplastic lipoxygenase, Immunogen: recombinant Arabidopsis thaliana protein, loop (aa 257-450) P38418, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 100
AS09 477 Antibody: S14 | 40S ribosomal protein S14-1, Immunogen: KLH-conjugated synthetic peptide derived from Arabidopsis thaliana Q9SIH0, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 100
AS11 1783 Antibody: Acd1 | accelerated cell death 1 , Immunogen: recombinant PaO from Arabidopsis thaliana Q9FYC2, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 100
AS09 476 Antibody: AtArf2 | ADP ribosylation factor 2, Immunogen: synthetic peptide derived from Arabidopsis thaliana Q9SRC3, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 100
AS09 474 Antibody: AtMTP4 | metal tolerance protein B, Immunogen: synthetic peptide derived from Arabidopsis thaliana Q9SRC3, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 100
AS09 515 Antibody: KC1 | potassium channel KAT3 , Immunogen: KLH-conjugated peptide derived from Arabidopsis thaliana KC1 protein P92960, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 200
AS09 475 Antibody: Ligand-gated ion channel 1.3, Immunogen: KLH-conjugated synthetic peptide derived from Arabidopsis thaliana Q9FH75, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana, Raph 100
AS10 931 Antibody: AtPCaP1 | Arabidopsis thaliana plasma membrane cation-binding protein-1, Immunogen: KLH-conjugated peptide derived from Arabidopsis thaliana PCaP1 sequence Q96262, Host: rabbit, polyclonal, 100
AS10 651 Antibody: Enolase, Immunogen: recombinant Arabidopsis thaliana enolase At2g36530, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 200
AS10 671 Antibody: AGO5 | argonaute 5, Immunogen: peptide of Arabidopsis thaliana AGO5 Q9SJK3, AT2G27880, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 200
AS10 937 Antibody: CPLD11 , Immunogen: overexpressed fragment of recombinant Arabidopsis thaliana CPLD11 NP_566650, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 200
AS10 672 Antibody: AGO6 | argonaute 6, Immunogen: KLH-conjugated peptide derived from Arabidopsis thaliana AGO6 At2g32940, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 100
AS09 459 Antibody: ClpB-P | ClpB3, Immunogen: KLH-conjugated peptide derived from ClpB-P of Arabidopsis thaliana Q9LF37, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 200
AS11 1753 Antibody: HDT3 | histone deacetylase, Immunogen: recombinant part of Arabidopsis thaliana HDT3 Q9LZR5, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 100
AS06 116 Antibody: PGL35 | plastoglobulin 35, Immunogen: recombinant Arabidopsis thaliana PGL35 protein O81439 , Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana, Gossypium hirsutum cv. Del 200
AS10 721 Antibody: PHOT2 | phototropin-2, Immunogen: KLH-conjugated synthetic peptide derived from known Arabidopsis thaliana PHOT2 P93025, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 100
AS11 1628 Antibody: HSP18.5 | class IV heat shock protein, Immunogen: recombinant Arabidopsis thaliana Hsp18.5 , Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 200
AS10 720 Antibody: PHOT1 | phototropin-1, Immunogen: KLH-conjugated synthetic peptide derived from known Arabidopsis thaliana PHOT1 O48963, Host: rabbit, polyclonal, Confirmed reactivity: Arabidopsis thaliana 100


 

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