CLiP Chlamydomonas

CLiP Chlamydomonas provides a genome-wide collection of mapped insertion mutants in Chlamydomonas reinhardtii tagged with unique DNA barcodes to enable pooled high-throughput genetic screens for studying photosynthesis, chloroplast biology, cilia/flagella function, eyespot formation, and lipid accumulation.

Key Features:

• Genome-wide mutant library: 62,389 mapped insertion mutants covering approximately 83% of nuclear protein-coding genes in Chlamydomonas reinhardtii.
• Unique DNA barcodes: Each mutant strain is tagged with unique DNA barcodes to facilitate identification in pooled screens.
• Pooled high-throughput screening: Supports quantitative screening of mutant pools via barcode-based assays.
• Photosynthesis gene discovery: A genome-wide survey using the resource identified 303 candidate genes required for photosynthesis, including 21 higher-confidence novel genes.
• Specific functional insights: Discovery of CPL3, a conserved predicted phosphatase required for accumulation of multiple photosynthetic protein complexes.
• Accelerated gene characterization: Enables rapid functional characterization of previously uncharacterized genes in photosynthetic organisms.

Scientific Applications:

• Photosynthesis research: Identification and functional analysis of genes required for photosynthetic processes and complex assembly.
• Chloroplast biology: Genetic dissection of chloroplast-related functions and components.
• Cilia/flagella function: Investigation of genes involved in cilia and flagella structure and motility.
• Eyespot formation: Genetic studies of eyespot development and function.
• Lipid accumulation: Identification of genes influencing lipid metabolism and accumulation.
• Comparative functional genomics: Inferring gene functions with broader relevance to plants and animals through conserved gene studies.

Methodology:

Insertion sites were mapped and strains were tagged with unique DNA barcodes to enable pooled high-throughput barcode-based screens and a genome-wide survey to identify photosynthesis candidate genes.