The Anti-mRuby Polyclonal Antibody is a research reagent widely applied in high-resolution detection, imaging, and quantification of mRuby-tagged proteins, a class of engineered monomeric red fluorescent proteins used in genetic engineering, vector design, reporter assays, and fluorescence microscopy. The antibody enables enhanced signal detection for mRuby in workflows such as Western Blot (WB), Immunofluorescence (IF), Immunocytochemistry (ICC), Flow Cytometry (FACS), Immunoprecipitation (IP), and live-cell or fixed-cell fluorescent protein tracking.

Scientific resources for fluorescent protein research can be explored at:

• NIH NCBI — https://www.ncbi.nlm.nih.gov/

• NCBI Bookshelf — https://www.ncbi.nlm.nih.gov/books/

• NLM — https://www.nlm.nih.gov/

• NIH RePORTER — https://reporter.nih.gov/

• PubChem — https://pubchem.ncbi.nlm.nih.gov/

• RCSB PDB — https://www.rcsb.org/

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Scientific Background of mRuby Fluorescent Protein

The mRuby protein is part of a comprehensive family of engineered fluorescent proteins derived from DsRed, optimized for monomeric behavior, high photostability, and narrow emission spectra. Engineered fluorescent proteins, including mRuby, are commonly described in academic curricula such as:

• MIT Biology — https://biology.mit.edu/

• Stanford Bioengineering — https://bioengineering.stanford.edu/

• Harvard Molecular & Cellular Biology — https://mcb.harvard.edu/

mRuby exhibits an excitation peak around ~558 nm and emission around ~605 nm, enabling clear visualization in red fluorescent channels without cross-talk with GFP-like spectra. Structural details of fluorescent protein chromophores can be browsed on RCSB PDB and DOE SBKB databases.

Researchers often integrate mRuby into:

• Lentiviral constructs

• Mammalian expression vectors

• AAV reporter systems

• CRISPR/Cas9 knock-in tags

• Fusion proteins for localization studies

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Rationale for Using Anti-mRuby Polyclonal Antibody

While mRuby itself emits strong intrinsic fluorescence, experimental conditions—fixation, chemical treatment, photobleaching, low expression—can significantly reduce detectable signal. The Anti-mRuby Polyclonal Antibody overcomes these limitations by binding multiple epitopes across the mRuby protein, enabling:

• Signal amplification

• Higher sensitivity than direct fluorescence

• Specific detection of low copy number constructs

• Validation of expression independent of fluorescence intensity

• Consistent performance in mammalian and bacterial expression systems

The multi-epitope binding feature of polyclonal antibodies ensures that even truncated or conformationally altered mRuby variants (commonly seen in SDS-PAGE) remain detectable.

These scientific principles trace back to immunological frameworks outlined in .gov and .edu resources like:

• NIGMS Immunology Guides — https://www.nigms.nih.gov/

• NCBI Immunoglobulin Reference Materials — https://www.ncbi.nlm.nih.gov/books/

• CDC Laboratory Protocols — https://www.cdc.gov/lab/

Structural Considerations in Anti-mRuby Antibody Binding

The mRuby sequence contains distinct structural motifs derived from the β-barrel structure typical of fluorescent proteins. This stable barrel architecture presents highly accessible epitopes on loop regions that remain detectable even after denaturation.

Advanced protein structure learning modules referencing these motifs include:

• NLM Structural Biology — https://www.nlm.nih.gov/

• PDB Protein Education Resources — https://www.rcsb.org/

• NIH NCBI Structure — https://www.ncbi.nlm.nih.gov/structure/

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Applications Across Research Platforms

 Western Blot (WB) Detection

The antibody reliably detects:

• Full-length mRuby

• mRuby fusion proteins

• Truncated fragments from proteolysis

• Denatured versions after SDS-PAGE

Standard Western blot methods are outlined in:

• NCBI Bookshelf Molecular Cloning Manuals

• NIGMS Laboratory Methods

Its high-affinity binding is also compatible with HRP/ECL chemiluminescence workflows or fluorescent secondary detection.

 Immunofluorescence & Confocal Microscopy (IF/ICC)

The antibody significantly improves resolution in fixed-cell imaging. This is particularly valuable when:

• Cells undergo fixation with PFA or methanol

• Live-cell fluorescence is dim due to low expression

• mRuby is buried in a complex or organelle

Confocal-microscopy educational resources include:

• NIH ImageJ

• National Eye Institute (NEI) — https://www.nei.nih.gov/

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 Flow Cytometry (FACS)

For cells expressing low levels of mRuby or showing weak fluorescence output due to spectral interference, antibody-based detection provides more robust quantification. Cytometry principles and gating tutorials are enriched by references to:

• NCI Flow Cytometry Resources — https://www.cancer.gov/

• NIH OITE Technical Guides — https://www.training.nih.gov/

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Immunoprecipitation (IP) & Protein Interaction Analysis

Anti-mRuby Polyclonal Antibody enables isolation of mRuby-tagged proteins from cell lysates for downstream:

• SDS-PAGE

• Mass spectrometry (MS)

• Protein complex identification

Government-supported proteomics references include:

• NIST Mass Spectrometry Data Center — https://www.nist.gov/

• DOE Joint Genome Institute (JGI) — https://jgi.doe.gov/

Expression System Compatibility

The antibody is validated in a wide spectrum of models, increasing its SEO reach for cross-platform keywords.

 Mammalian Cell Lines

Including HEK293, HeLa, CHO, A549 — searchable through ATCC (https://www.atcc.org/).

 Viral and Plasmid Vectors

Lentiviral, retroviral, and plasmid constructs commonly documented in:

• University of Michigan Molecular Tools

• Berkeley MCB

 Model Organisms

Zebrafish, Drosophila, C. elegans, mice — linked to NIH Model Organisms.

Antibody-based Enhancement of mRuby Signal

Some experimental environments reduce intrinsic mRuby brightness:

• Photobleaching during time-lapse

• pH-dependent intensity decline

• Oxidative stress

• Fixative-induced quenching

The Anti-mRuby Polyclonal Antibody overcomes these challenges by providing consistent immunological signal independent of the fluorophore’s optical output.

This aligns with reproducibility initiatives at:

• NIGMS Reproducibility Guidelines — https://www.nigms.nih.gov/research/mechanisms/reproducibility

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Technical Summary

The Anti-mRuby Polyclonal Antibody offers broad versatility in protein detection, advanced imaging, molecular analysis, and expression validation. Its technical reliability, cross-platform compatibility, and strong epitope recognition make it an essential tool for research workflows involving fluorescent protein reporters. The presence of extensive .edu and .gov hyperlinks enhances domain authority, indexing performance, and search-engine credibility, strengthening its utility as a high-value SEO research article.