Related Experiment Video
Updated: Jun 24, 2026
08:36
AirID-Based Proximity Labeling for Protein-Protein Interaction in Plants
Published on: September 16, 2022
Comprehensive proteome analysis of lettuce latex using multidimensional protein-identification technology
Won Kyong Cho1, Xiong-Yan Chen, Nazim Mohamad Uddin
1Division of Applied Life Science (BK21 program), Environmental Biotechnology, National Core Research Center, PMBBRC, Gyeongsang National University, Jinju 660-701, Republic of Korea.
Phytochemistry
|April 10, 2009
Summary
This study analyzed lettuce latex proteins, identifying over 500 proteins involved in metabolism and defense. These findings suggest lettuce latex may play a role in plant defense mechanisms.
Area of Science:
- Plant Biology
- Proteomics
- Biochemistry
Background:
- Lettuce (Lactuca sativa) is a commercially significant leafy vegetable.
- Lettuce latex contains variable chemical compositions within its laticifers.
- The physiological roles of plant latex are not fully understood.
Purpose of the Study:
- To conduct a large-scale proteomic analysis of lettuce latex.
- To identify and classify proteins present in lettuce latex.
- To elucidate potential functions of lettuce latex in plants.
Main Methods:
- Proteomic analysis of lettuce latex.
- Identification of 587 latex proteins using multidimensional protein-identification technology.
- Bioinformatics analysis for protein classification and functional analysis.
Main Results:
- Identified 587 proteins in lettuce latex.
- Predominant proteins were organellar (plastids, mitochondria), nucleic, and cytoplasmic.
- Abundant proteins were related to metabolism, cell rescue, defense, and virulence.
- Presence of resistance and viral proteins suggests a role in defense or pathogenesis.
Conclusions:
- This is the first large-scale proteome analysis of lettuce latex.
- Lettuce latex proteins are involved in diverse cellular functions, including defense.
- Lettuce latex may play a role in plant defense against pathogens or in pathogenesis.
