Vitamin E biosynthesis: biochemistry meets cell biology.

Abstract

Vitamin E is thought to be involved in many essential processes in plants, but no functional proof has been reported. To study vitamin E deficiency in plants, a high-throughput biochemical screen for vitamin E quantification in Arabidopsis mutants has been developed, which has led to the identification of VTE1-encoding tocopherol cyclase. Interestingly, the corresponding maize mutation, sxd1, causes plasmodesmata malfunction, suggesting a link between tocopherol cyclase and plasmodesmata function.

• Authors: Daniel Hofius, Uwe Sonnewald
• Journal: Trends in plant science (Trends Plant Sci) Vol. 8 Issue 1 Pg. 6-8 (Jan 2003) ISSN: 1360-1385 [Print] England
• PMID: 12523993 (Publication Type: Journal Article)

Chemical References

• Plant Proteins
• Sxd1 protein, Zea mays
• Vitamin E
• gamma-Tocopherol
• beta-Tocopherol
• Intramolecular Transferases
• tocopherol cyclase
• alpha-Tocopherol
• Tocopherols

Topics

• Arabidopsis (enzymology, genetics, metabolism)
• Intramolecular Transferases (genetics, metabolism)
• Mutation
• Plant Proteins (genetics, metabolism)
• Plant Structures (physiology)
• Tocopherols (chemistry, metabolism)
• Vitamin E (biosynthesis, chemistry)
• Zea mays (genetics)
• alpha-Tocopherol (chemistry, metabolism)
• beta-Tocopherol (chemistry, metabolism)
• gamma-Tocopherol (chemistry, metabolism)