puf-6 Antibody
Product Specs
Constituents: 50% Glycerol, 0.01M PBS, pH 7.4
Target Background
This antibody targets PUF-6, an RNA-binding protein. PUF-6 binds to the consensus sequence 5'-CUCUGUAUCUUGU-3' within mRNA 3'-UTRs, thereby modulating mRNA expression and stability. It functions redundantly with puf-5 and puf-7 in several key processes: oocyte formation and organization, early embryonic cell divisions, and repression of maternal mRNA expression (including glp-1) during late oogenesis.
Studies indicate that for several PUF proteins (Puf3p, FBF-2, PUF-6, and PUF-11), the upstream pockets and a cytosine residue are crucial for optimal RNA binding. However, the degree to which these elements affect binding affinity varies among the proteins. (PMID: 22205700)
Q&A
FAQs for Researchers on PUF-6 Antibody in Academic Research
What experimental designs are optimal for studying PUF-6’s role in ribosomal biogenesis?
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Temperature-shift assays: puf6Δ mutants exhibit impaired 60S subunit export at low temperatures (20°C), making temperature-controlled growth experiments critical .
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Co-sedimentation and ChIP-chip: Pellet ribosomes via ultracentrifugation and use chromatin immunoprecipitation to map PUF6 binding to mRNAs encoding cell wall biogenesis factors .
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Ortholog rescue experiments: Human Pum3 (PUF6 ortholog) can rescue yeast puf6Δ phenotypes, providing evolutionary insights .
How do anti-PUF60 autoantibodies correlate with disease activity in idiopathic inflammatory myopathies (IIMs)?
Use enzyme-linked immunosorbent assays (ELISAs) validated by immunoblotting to quantify anti-PUF60 levels in longitudinal cohorts .
What contradictions exist in PUF-6’s functional interplay with Loc1?
While PUF6 and Loc1 bind concurrently to pre-60S subunits, deletions reveal non-redundant roles:
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loc1Δ elevates PUF6 levels by 1.3–1.7-fold .
These data suggest interdependent roles in subunit maturation but independent binding mechanisms. Resolve contradictions using sequential IP and quantitative mass spectrometry .
Can anti-PUF60 antibodies serve as biomarkers for early-stage cancers?
In colorectal cancer (CRC):
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Diagnostic accuracy: Anti-PUF60 antibodies show an AUC of 0.85 (ROC analysis), outperforming CA19-9 and anti-p53 .
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Postoperative monitoring: Levels decline significantly after tumor resection (p < 0.01) .
Combine with RNA-seq to detect FIRΔexon2 splice variants, which are overexpressed in CRC and linked to c-myc dysregulation .
What advanced techniques resolve PUF-6’s dual roles in mRNA localization and translation?
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Co-transcriptional ChIP-chip: Identifies PUF6 binding to mRNAs (e.g., ASH1, WSC2) during transcription .
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Ribosome profiling: Differentiate between translational repression (via Khd1 interaction) and mRNA transport roles .
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Single-molecule FISH: Track PUF6-associated mRNAs in bud-localized compartments .
Why are anti-PUF60 antibodies nonspecific to myositis?
Anti-PUF60 antibodies are detected in systemic lupus erythematosus (17.3%), rheumatoid arthritis (14.5%), and Sjögren’s syndrome (10.1%) . This cross-reactivity may stem from shared epitopes in FIR/PUF60 splice variants or molecular mimicry in autoimmune disorders. Use epitope mapping and structural analysis to identify antigenic regions .
