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Literature summary extracted from

  • Yang, Y.; Xu, J.; Huang, L.; Leng, Y.; Dai, L.; Rao, Y.; Chen, L.; Wang, Y.; Tu, Z.; Hu, J.; Ren, D.; Zhang, G.; Zhu, L.; Guo, L.; Qian, Q.; Zeng, D.
    PGL, encoding chlorophyllide a oxygenase 1, impacts leaf senescence and indirectly affects grain yield and quality in rice (2016), J. Exp. Bot., 67, 1297-1310 .
    View publication on PubMedView publication on EuropePMC

Cloned(Commentary)

EC Number Cloned (Comment) Organism
1.14.13.122 gene pgl, recombinant expression of truncated protein OsCAO1pgl fused with GFP (35S::OsCAO1pgl-GFP) and transformed into Nicotiana benthamiana via Agrobacterium sp., specific expression in chloroplasts although the truncated enzyme lacks the signal sequence Oryza sativa Japonica Group

Protein Variants

EC Number Protein Variants Comment Organism
1.14.13.122 additional information generation of the truncated enzyme mutant OsCAO1pgl. The premature translational termination of OsCAO1 in mutant pgl does not affect OsCAO1 localization, the mutation nevertheless results in the pale-green phenotype. Expression levels of Chl synthesis-associated genes in mutant pgl, and phenotype, overview Oryza sativa Japonica Group

Localization

EC Number Localization Comment Organism GeneOntology No. Textmining
1.14.13.122 chloroplast the chloroplast localization signal of OsCAO1 likely exists in the N-terminus Oryza sativa Japonica Group 9507
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Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
1.14.13.122 chlorophyllide a + 2 O2 + 2 NADPH + 2 H+ Oryza sativa Japonica Group
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 chlorophyllide b + 3 H2O + 2 NADP+
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 ?

Organism

EC Number Organism UniProt Comment Textmining
1.14.13.122 Oryza sativa Japonica Group Q8S7E1 CAO1
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Source Tissue

EC Number Source Tissue Comment Organism Textmining
1.14.13.122 chlorenchyma PGL, encoding chlorophyllide a oxygenase 1, is mainly expressed in the chlorenchyma Oryza sativa Japonica Group
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1.14.13.122 culm
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 Oryza sativa Japonica Group
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1.14.13.122 leaf blade
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 Oryza sativa Japonica Group
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1.14.13.122 leaf sheath
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 Oryza sativa Japonica Group
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1.14.13.122 panicle
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 Oryza sativa Japonica Group
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1.14.13.122 root very low enzyme content Oryza sativa Japonica Group
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Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
1.14.13.122 chlorophyllide a + 2 O2 + 2 NADPH + 2 H+
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 Oryza sativa Japonica Group chlorophyllide b + 3 H2O + 2 NADP+
-
 ?

Synonyms

EC Number Synonyms Comment Organism
1.14.13.122 CAO
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 Oryza sativa Japonica Group
1.14.13.122 chlorophyllide a oxygenase 1
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 Oryza sativa Japonica Group
1.14.13.122 OsCAO1
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 Oryza sativa Japonica Group
1.14.13.122 PGL
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 Oryza sativa Japonica Group

Cofactor

EC Number Cofactor Comment Organism Structure
1.14.13.122 NADPH
-
 Oryza sativa Japonica Group

Expression

EC Number Organism Comment Expression
1.14.13.122 Oryza sativa Japonica Group PGL, encoding chlorophyllide a oxygenase 1, is induced in the light-dependent chlorophyll synthesis process up

General Information

EC Number General Information Comment Organism
1.14.13.122 malfunction rice mutant pale green leaf (pgl) exhibits a lower chlorophyll content with a reduced and disorderly thylakoid ultrastructure, which decreases the photosynthesis rate and results in reduced grain yield and quality compared to the wild-type. In addition, mutant pgl exhibits premature senescence in both natural and dark-induced conditions and more severe chlorophyll degradation and reactive oxygen species accumulation than does the wild-type. Mutant pgl is sensitive to heat stress. The pgl plants exhibit a pale-green leaf in the paddy field and present a severe withered phenotype in the leaf tip Oryza sativa Japonica Group
1.14.13.122 physiological function PGL, encoding chlorophyllide a oxygenase 1, impacts leaf senescence and indirectly affects grain yield and quality in rice. The enzyme is required for the light-dependent Chl synthesis during greening of etiolated plants. PGL might also affects the ROS scavenging system under low light Oryza sativa Japonica Group