YLL056C Antibody

Introduction to YLL056C Antibody

The YLL056C antibody is a specialized immunological reagent designed to target the YLL056C protein in Saccharomyces cerevisiae. This protein, encoded by the YLL056C gene, is implicated in pleiotropic drug resistance and zinc homeostasis . The antibody enables researchers to study the protein’s localization, expression levels, and functional interactions through techniques such as Western blotting, immunoprecipitation, and fluorescence microscopy .

Biological Role of YLL056C Protein

The YLL056C protein is associated with:

• Zinc ion transmembrane transport: Deletion of YLL056C in yeast confers resistance to both high and low zinc concentrations, suggesting a regulatory role in zinc homeostasis .

• Detoxification: Exhibits NAD(P)H-dependent reductase activity, contributing to furfural and hydroxymethylfurfural (HMF) detoxification in lignocellulosic hydrolysates .

• Transcriptional regulation: Co-expressed with genes involved in drug resistance, though its direct molecular mechanisms remain under investigation .

Protein Localization and Quantification

The antibody has been used to track YLL056C-GFP fusion proteins via confocal microscopy, confirming its localization to the endoplasmic reticulum (ER) and plasma membrane under varying zinc conditions .

Enzyme Activity Assays

Comparative studies using crude cell extracts revealed that YLL056C overexpression enhances specific reductase activity (9.5 U/mg for furfural reduction), outperforming related enzymes like Ykl071wp (3.38 U/mg) .

Genetic Interaction Studies

The antibody aids in characterizing strains with YLL056C deletions or overexpression, particularly in stress-response pathways linked to oxidative damage and cell wall integrity .

Validation and Performance Metrics

The YLL056C antibody has been validated using:

Reductase Activity

Data adapted from furfural detoxification studies .

Stress Resistance

• YLL056C overexpression: Reduces intracellular reactive oxygen species (ROS) by 43% under furfural stress .

• YLL056C deletion: Increases susceptibility to zinc toxicity but enhances resistance to pleiotropic drugs .

Challenges and Future Directions

While the YLL056C antibody has proven reliable in S. cerevisiae studies, its cross-reactivity with orthologs in other fungi remains untested. Ongoing efforts focus on structural characterization of the protein’s zinc-binding domains and its interaction with transcription factors like Rim101 .

For rigorous experimental design, consult open antibody databases such as YCharOS and Addgene’s Antibody Data Hub, which provide standardized validation protocols .