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Information on EC 2.5.1.130 - 2-carboxy-1,4-naphthoquinone phytyltransferase and Organism(s) Arabidopsis thaliana and UniProt Accession Q0WUA3

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IUBMB Comments
This enzyme, found in plants and cyanobacteria, catalyses a step in the synthesis of phylloquinone (vitamin K1), an electron carrier associated with photosystem I. The enzyme catalyses the transfer of the phytyl chain synthesized by EC 1.3.1.83, geranylgeranyl diphosphate reductase, to 2-carboxy-1,4-naphthoquinone.
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This record set is specific for:
Arabidopsis thaliana
UNIPROT: Q0WUA3
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The taxonomic range for the selected organisms is: Arabidopsis thaliana
The expected taxonomic range for this enzyme is: Bacteria, Eukaryota
Synonyms
1,4-dihydroxy-2-naphthoate polyprenyltransferase, 1,4-diketo-2-naphthoate phytyltransferase, 1,4-dioxo-2-naphthoate phytyltransferase, ABC4, MenA, more
SYNONYM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
1,4-dihydroxy-2-naphthoate polyprenyltransferase
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1,4-diketo-2-naphthoate phytyltransferase
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-
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1,4-dioxo-2-naphthoate phytyltransferase
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-
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ABC4
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MenA
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SYSTEMATIC NAME
IUBMB Comments
phytyl-diphosphate:2-carboxy-1,4-naphthoquinone phytyltransferase
This enzyme, found in plants and cyanobacteria, catalyses a step in the synthesis of phylloquinone (vitamin K1), an electron carrier associated with photosystem I. The enzyme catalyses the transfer of the phytyl chain synthesized by EC 1.3.1.83, geranylgeranyl diphosphate reductase, to 2-carboxy-1,4-naphthoquinone.
ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
LOCALIZATION
ORGANISM
UNIPROT
COMMENTARY hide
GeneOntology No.
LITERATURE
SOURCE
GENERAL INFORMATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
physiological function
mutant plants show pale-green young leaves and white old leaves. The ABC4 mutant plants contain no phylloquinone, and only about 3% plastoquinone. Photooxidation of P700 of PSI in the mutant is not observed, and the mutant has no P700. The maximum quantum yield of photosystem II in the ABc4 mutant is much decreased, and the electron transfer from PSII to PSI does not occur. The ultrastructure of the chloroplasts is almost the same as that of the wild-type plant. However, the chloroplasts in the albino leaves of the mutant are smaller and have a lot of grana thylakoids and few stroma thylakoids. The amounts of PSI and PSII core subunits in the mutant are significantly decreased
UNIPROT
ENTRY NAME
ORGANISM
NO. OF AA
NO. OF TRANSM. HELICES
MOLECULAR WEIGHT[Da]
SOURCE
SEQUENCE
LOCALIZATION PREDICTION?
MENA_ARATH
382
8
42037
Swiss-Prot
other Location (Reliability: 5)
REF.
AUTHORS
TITLE
JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
Shimada, H.; Ohno, R.; Shibata, M.; Ikegami, I.; Onai, K.; Ohto, M.A.; Takamiya, K.
Inactivation and deficiency of core proteins of photosystems I and II caused by genetical phylloquinone and plastoquinone deficiency but retained lamellar structure in a T-DNA mutant of Arabidopsis
Plant J.
41
627-637
2005
Arabidopsis thaliana (Q0WUA3)
Manually annotated by BRENDA team