MedicCyc: a biochemical pathway database for Medicago truncatula
Ewa Urbanczyk-Wochniak1, Lloyd W Sumner
1The Samuel Roberts Noble Foundation, Inc., Ardmore, OK 73401, USA.
Bioinformatics (Oxford, England)
|March 9, 2007
Summary
A new database, MedicCyc, was created for Medicago truncatula to visualize functional genomics data within metabolic pathways. This systems biology approach integrates genomic information for a comprehensive understanding of plant metabolism.
Area of Science:
- Plant Systems Biology
- Functional Genomics
- Metabolic Pathway Engineering
Background:
- Integrating functional genomics data is crucial for a comprehensive systems biology understanding.
- Visualizing this data within the context of metabolic pathways is an effective approach.
- Metabolic pathway reconstruction aids in predicting and understanding plant metabolic composition.
Purpose of the Study:
- To reconstruct metabolic pathways for Medicago truncatula.
- To engineer these pathways for visualizing integrated functional genomics data.
- To create a comprehensive systems biology view of Medicago truncatula.
Main Methods:
- Metabolic pathway reconstruction using Pathway Tools and MetaCyc database.
- Assembly from Medicago truncatula ESTs and genomic sequences.
- Manual curation and integration of literature and experimental data.
Main Results:
- MedicCyc database developed with over 250 pathways for M. truncatula.
- Database assembled from >225,000 ESTs and genomic sequences.
- Verified pathways and identified missing enzymes through comparison with AraCyc and RiceCyc.
Conclusions:
- MedicCyc enables visualization of functional genomics data in a biological context.
- The database aids in understanding Medicago truncatula's metabolic capabilities.
- MedicCyc is a valuable resource for plant systems biology research.
Related Concept Videos
Amino Acid Biosynthetic Pathways
Amino acid biosynthesis is essential for cell growth, protein synthesis, and metabolic regulation. Cells generate essential and non-essential amino acids from metabolic intermediates to sustain vital biological functions. These intermediates originate from key metabolic pathways: glycolysis, the tricarboxylic acid (TCA) cycle, and the pentose phosphate pathway. Important precursors include α-ketoglutarate, pyruvate, oxaloacetate, phosphoenolpyruvate, and erythrose-4-phosphate, which provide...
C4 Pathway and CAM
Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy.
C4 Pathway
The C4 pathway is used by plants such as...
C4 Pathway
The C4 pathway is used by plants such as...


