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EC Tree
IUBMB Comments A cytochrome P-450 (heme-thiolate) protein found in plants. The enzyme is involved in the synthesis of sporopollenin - a complex polymer found at the outer layer of spores and pollen. It can also act on decanoate (C10), myristate (C14), and palmitate (C16) with lower activity. The enzyme also produces a small amount of products that are hydroxylated at neighboring positions (C-6, C-8 and C-9).
The enzyme appears in viruses and cellular organisms
Synonyms
CYP703A2, CYP703A3,
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CYP703A2
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dodecanoate + [reduced NADPH-hemoprotein reductase] + O2 = 7-hydroxydodecanoate + [oxidized NADPH-hemoprotein reductase] + H2O
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dodecanoate,[reduced NADPH-hemoprotein reductase]:oxygen oxidoreductase (7-hydroxylating)
A cytochrome P-450 (heme-thiolate) protein found in plants. The enzyme is involved in the synthesis of sporopollenin - a complex polymer found at the outer layer of spores and pollen. It can also act on decanoate (C10), myristate (C14), and palmitate (C16) with lower activity. The enzyme also produces a small amount of products that are hydroxylated at neighboring positions (C-6, C-8 and C-9).
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dodecanoate + [reduced NADPH-hemoprotein reductase] + O2
7-hydroxydodecanoate + [oxidized NADPH-hemoprotein reductase] + H2O
lauric acid + [reduced NADPH-hemoprotein reductase] + O2
12-hydroxydodecanoic acid + [oxidized NADPH-hemoprotein reductase] + H2O
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dodecanoate + [reduced NADPH-hemoprotein reductase] + O2
7-hydroxydodecanoate + [oxidized NADPH-hemoprotein reductase] + H2O
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dodecanoate + [reduced NADPH-hemoprotein reductase] + O2
7-hydroxydodecanoate + [oxidized NADPH-hemoprotein reductase] + H2O
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specific substrate
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dodecanoate + [reduced NADPH-hemoprotein reductase] + O2
7-hydroxydodecanoate + [oxidized NADPH-hemoprotein reductase] + H2O
dodecanoate + [reduced NADPH-hemoprotein reductase] + O2
7-hydroxydodecanoate + [oxidized NADPH-hemoprotein reductase] + H2O
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dodecanoate + [reduced NADPH-hemoprotein reductase] + O2
7-hydroxydodecanoate + [oxidized NADPH-hemoprotein reductase] + H2O
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specific substrate
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Infertility
The Rice Floral Repressor Early flowering1 Affects Spikelet Fertility By Modulating Gibberellin Signaling.
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UniProt
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developing flower
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developinmg anther
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malfunction
Arabidopsis CYP703A2 knockout lines show impaired pollen development and a partial male-sterile phenotype through impaired pollen wall development with absence of exine
physiological function
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the enzyme is essential for development of anther cuticle and pollen exine
physiological function
the enzyme provides building blocks for sporopollenin synthesis in pollen
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CP4Z1_HUMAN
505
2
59086
Swiss-Prot
Secretory Pathway (Reliability: 1 )
C70A2_ARATH
510
1
57854
Swiss-Prot
Secretory Pathway (Reliability: 3 )
C70A3_ORYSJ
525
0
59631
Swiss-Prot
Secretory Pathway (Reliability: 5 )
A0A346RPE6_9LILI
523
2
59447
TrEMBL
Secretory Pathway (Reliability: 1 )
A0A346RPF8_9LILI
524
2
59577
TrEMBL
Secretory Pathway (Reliability: 1 )
A0A346RPE8_9LILI
523
2
59403
TrEMBL
Secretory Pathway (Reliability: 1 )
A0A346RPE4_ELAGV
522
2
59562
TrEMBL
Secretory Pathway (Reliability: 2 )
A0A346RPF5_9LILI
523
2
59367
TrEMBL
Secretory Pathway (Reliability: 1 )
A0A346RPE5_PHODC
527
2
59739
TrEMBL
Secretory Pathway (Reliability: 1 )
A0A346RPF3_9LILI
523
2
59321
TrEMBL
Secretory Pathway (Reliability: 1 )
A0A346RPE9_PHORE
527
2
59581
TrEMBL
Secretory Pathway (Reliability: 1 )
A0A346RPF6_9LILI
527
2
59739
TrEMBL
Secretory Pathway (Reliability: 1 )
A0A346RPF4_9LILI
523
2
59387
TrEMBL
Secretory Pathway (Reliability: 1 )
A0A346RPF2_9LILI
523
2
59323
TrEMBL
Secretory Pathway (Reliability: 1 )
A0A346RPF9_9LILI
524
2
59567
TrEMBL
Secretory Pathway (Reliability: 1 )
A0A346RPE7_9LILI
523
2
59323
TrEMBL
Secretory Pathway (Reliability: 1 )
A0A346RPF0_9LILI
523
2
59360
TrEMBL
Secretory Pathway (Reliability: 1 )
A0A346RPF7_9LILI
527
2
59739
TrEMBL
Secretory Pathway (Reliability: 1 )
A0A346RPF1_9LILI
523
2
59347
TrEMBL
Secretory Pathway (Reliability: 1 )
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expressed in Saccharomyces cerevisiae strain WAT1
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CYP703A3 expression is directly regulated by TDR
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Dobritsa, A.A.; Shrestha, J.; Morant, M.; Pinot, F.; Matsuno, M.; Swanson, R.; Moller, B.L.; Preuss, D.
CYP704B1 is a long-chain fatty acid omega-hydroxylase essential for sporopollenin synthesis in pollen of Arabidopsis
Plant Physiol.
151
574-589
2009
Arabidopsis thaliana
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Yang, X.; Wu, D.; Shi, J.; He, Y.; Pinot, F.; Grausem, B.; Yin, C.; Zhu, L.; Chen, M.; Luo, Z.; Liang, W.; Zhang, D.
Rice CYP703A3, a cytochrome P450 hydroxylase, is essential for development of anther cuticle and pollen exine
J. Integr. Plant Biol.
56
979-994
2014
Oryza sativa
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Morant, M.; Jorgensen, K.; Schaller, H.; Pinot, F.; Moller, B.L.; Werck-Reichhart, D.; Bak, S.
CYP703 is an ancient cytochrome P450 in land plants catalyzing in-chain hydroxylation of lauric acid to provide building blocks for sporopollenin synthesis in pollen
Plant Cell
19
1473-1487
2007
Arabidopsis thaliana (Q9LNJ4), Arabidopsis thaliana
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