Gene: AT1G69500 (Arabidopsis thaliana)

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Gene Identifier
Transcript Identifier
Gene Type
Coding gene
1 : 26123960-26125909 : positive


Gene family
(512 genes in 16 species)
specific family
Duplication type
Block duplicate

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cytochrome P450, family 704, subfamily B, polypeptide 1
Curated Summary
Encodes a cytochrome P450, designated CYP704B1. Expressed in the developing anthers. Essential for pollen exine development. Mutations in CYP704B1 result in impaired pollen walls that lack a normal exine layer and exhibit a characteristic striped surface, termed zebra phenotype. Heterologous expression of CYP704B1 in yeast cells demonstrated that it catalyzes omega-hydroxylation of long-chain fatty acids, implicating these molecules in sporopollenin synthesis.
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Identifier Name
alias'cytochrome P450, family 704, subfamily B, polypeptide 1'





Biological Process

GO termEvidence(s)ProviderDescriptionSource
GO:0010584IMP, RCAGene Ontologypollen exine formation1 2
GO:0080110IMPGene Ontologysporopollenin biosynthetic process1
GO:0055114IEAInterProoxidation-reduction process
GO:0044699IEAPLAZA Homologysingle-organism processHOM03M000087
GO:0044710IEAPLAZA Homologysingle-organism metabolic processHOM03M000087

Molecular Function

GO termEvidence(s)ProviderDescriptionSource
GO:0019825ISSGene Ontologyoxygen binding1
GO:0018685IDAGene Ontologyalkane 1-monooxygenase activity1
GO:0005506IEAInterProiron ion binding
GO:0016705IEAInterProoxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen
GO:0020037IEAInterProheme binding
GO:0043169IEAPLAZA Homologycation bindingHOM03M000087
GO:0043167IEAPLAZA Homologyion bindingHOM03M000087
GO:0046914IEAPLAZA Homologytransition metal ion bindingHOM03M000087
GO:0046906IEAPLAZA Homologytetrapyrrole bindingHOM03M000087
GO:0046872IEAPLAZA Homologymetal ion bindingHOM03M000087
GO:1901363IEAPLAZA Homologyheterocyclic compound bindingHOM03M000087
GO:0016491IEAPLAZA Homologyoxidoreductase activityHOM03M000087
GO:0097159IEAPLAZA Homologyorganic cyclic compound bindingHOM03M000087

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Experimental Evidence
Electronic Evidence
Computational Reviewed Evidence
GO Sources:   Primary     Orthology     Homology  
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InterPro Description
IPR002401Cytochrome P450, E-class, group I
IPR001128Cytochrome P450

Mapman id Description
26.10misc.cytochrome P450
SignalP Description
SignalP-noTMSignal Peptide detected using noTM network