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PMID:18419821

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Citation

Funck, D, Stadelhofer, B and Koch, W (2008) Ornithine-delta-aminotransferase is essential for arginine catabolism but not for proline biosynthesis. BMC Plant Biol. 8:40

Abstract

Like many other plant species, Arabidopsis uses arginine (Arg) as a storage and transport form of nitrogen, and proline (Pro) as a compatible solute in the defence against abiotic stresses causing water deprivation. Arg catabolism produces ornithine (Orn) inside mitochondria, which was discussed controversially as a precursor for Pro biosynthesis, alternative to glutamate (Glu).

Links

PubMed PMC2377265 Online version:10.1186/1471-2229-8-40

Keywords

Arabidopsis/cytology; Arabidopsis/drug effects; Arabidopsis/enzymology; Arginine/metabolism; Genetic Complementation Test; Green Fluorescent Proteins/metabolism; Mitochondria/drug effects; Mitochondria/enzymology; Models, Biological; Mutation/genetics; Ornithine/metabolism; Ornithine-Oxo-Acid Transaminase/metabolism; Phenotype; Proline/biosynthesis; Protein Transport/drug effects; Recombinant Fusion Proteins/metabolism; Sodium Chloride/pharmacology; Urea/metabolism

Significance

Annotations

Gene product Qualifier GO Term Evidence Code with/from Aspect Extension Notes Status

ARATH:OAT

acts_upstream_of_or_within

GO:0019544: arginine catabolic process to glutamate

ECO:0000315: mutant phenotype evidence used in manual assertion

P

Seeded From UniProt

complete

ARATH:OAT

acts_upstream_of_or_within

GO:0006593: ornithine catabolic process

ECO:0000315: mutant phenotype evidence used in manual assertion

P

Seeded From UniProt

complete

ARATH:OAT

located_in

GO:0005739: mitochondrion

ECO:0000314: direct assay evidence used in manual assertion

C

Seeded From UniProt

complete

ARATH:OAT

GO:0051646: mitochondrion localization

ECO:0000314:

P

Figure 1: Leaf tissue from Arabidopsis was transformed with delta-OAT-GFP. GFP florescence was observed localized in mitochondria.

complete
CACAO 9783

ARATH:OAT

enables

GO:0004587: ornithine-oxo-acid transaminase activity

ECO:0000315: mutant phenotype evidence used in manual assertion

F

Seeded From UniProt

complete

ARATH:OAT

part_of

GO:0005739: mitochondrion

ECO:0000314: direct assay evidence used in manual assertion

C

Seeded From UniProt

complete

ARATH:OAT

NOT|involved_in

GO:0006561: proline biosynthetic process

ECO:0000315: mutant phenotype evidence used in manual assertion

P

Seeded From UniProt

complete

ARATH:OAT

involved_in

GO:0006593: ornithine catabolic process

ECO:0000315: mutant phenotype evidence used in manual assertion

P

Seeded From UniProt

complete

ARATH:OAT

involved_in

GO:0019544: arginine catabolic process to glutamate

ECO:0000315: mutant phenotype evidence used in manual assertion

P

Seeded From UniProt

complete

ARATH:OAT

involved_in

GO:0051646: mitochondrion localization

ECO:0000314: direct assay evidence used in manual assertion

P

Seeded From UniProt

complete


See also

References

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