TBCB Antibody

Tubulin Folding Cofactor B, Mouse Anti Human
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Description

Definition and Biological Context

TBCB Antibody is an immunoglobulin developed to detect and study the TBCB protein (UniProt ID: Q99426), a chaperone involved in α-tubulin folding and microtubule assembly . Microtubules are essential for cell division, intracellular transport, and maintaining cell shape, making TBCB a protein of interest in cancer and neurodegenerative disease research.

Key Attributes:

  • Host Species: Rabbit .

  • Reactivity: Human, mouse, rat .

  • Molecular Weight: Predicted 27 kDa (observed ~32 kDa due to post-translational modifications) .

  • Immunogen: TBCB fusion protein (Ag8473) .

Applications:

ApplicationDilution RangeValidated Cell Lines/Tissues
Western Blot (WB)1:1,000–1:8,000HeLa, A431, mouse brain
Immunofluorescence (IF)1:200–1:800HeLa cells
Immunoprecipitation (IP)0.5–4.0 µg per 1–3 mg lysateHeLa lysates

Prognostic Value in Acute Myeloid Leukemia (AML)

A 2023 study analyzed TBCB expression in AML patients and found:

Technical Validation

  • Western Blot: Clear detection of TBCB in human cell lines (HeLa, A431) and rodent tissues .

  • Immunohistochemistry (IHC): Strong staining in paraffin-embedded human kidney tissues .

Limitations and Future Directions

  • Specificity Challenges: Observed molecular weight discrepancies suggest potential cross-reactivity with post-translationally modified isoforms .

  • Therapeutic Potential: No direct studies on TBCB antibodies as therapeutics exist, though its role in AML highlights diagnostic utility .

Product Specs

Introduction
TBCB, a member of the Microtubules family, plays a crucial role in the biosynthesis of functional microtubules. This process involves several chaperones known as Tubulin folding cofactors A (TBCA), B (TBCB), C (TBCC), D (TBCD), and E (TBCE), which act on folding intermediates downstream of the cytosolic chaperon TCP. TBCB, a 244 amino acid cytoplasmic protein, contains one CAP-Gly domain and is ubiquitously expressed. Its functions include regulating tubulin heterodimer dissociation and acting as a negative regulator of axonal growth.
Physical Appearance
Sterile, colorless solution.
Formulation
1 mg/ml in PBS, pH 7.4, with 10% Glycerol and 0.02% Sodium Azide.
Storage Procedures
Store at 4°C for up to 1 month. For longer storage periods, store at -20°C. Avoid repeated freeze-thaw cycles.
Stability / Shelf Life
Stable for 12 months at -20°C or 1 month at 4°C.
Applications
This antibody has been validated for ELISA and Western blot analysis to ensure its specificity and reactivity. However, optimal working dilutions should be determined empirically for each application. A starting dilution of 1:1500 is recommended.
Synonyms
Tubulin folding cofactor B, Cytoskeleton-associated protein CKAPI, cytoskeleton associated protein 1, CKAP1, CG22, Tubulin-specific chaperone B.
Purification Method
TBCB antibody was purified from mouse ascitic fluids by protein-A affinity chromatography.
Type
Mouse Anti Human Monoclonal.
Clone
PAT1F6AT.
Immunogen
Anti-human TBCB mAb, clone PAT1F6AT, is derived from hybridization of mouse F0 myeloma cells with spleen cells from BALB/c mice immunized with a recombinant human TBCB protein 1-244 amino acids purified from E. coli.
Ig Subclass
Mouse IgG2b heavy chain and k light chain.

Q&A

What is TBCB and why are antibodies against it significant in research?

TBCB (Tubulin Cofactor B) is a protein involved in microtubule dynamics and cell division, playing a crucial role in maintaining cell structure and function. TBCB antibodies serve as essential tools for detecting and analyzing this protein in various cell types, contributing significantly to studies in cell biology and cancer research . The high specificity of these antibodies allows researchers to investigate the intricate relationships between TBCB expression, microtubule regulation, and various disease states.

How do TBCB antibodies differ from other cytoskeletal protein antibodies in research applications?

Unlike antibodies targeting structural components like tubulin directly, TBCB antibodies target a regulatory cofactor that influences microtubule assembly. This provides researchers with the ability to study not just the cytoskeletal structure itself, but the regulatory machinery controlling its dynamics. TBCB antibodies, such as the rabbit polyclonal antibody CAB13248, have been specifically validated for human samples, making them particularly valuable for translational research between cellular models and clinical investigations .

What are the optimal western blot conditions when working with TBCB antibodies?

For western blot applications using TBCB antibodies such as CAB13248, researchers should optimize several key parameters:

  • Sample preparation: Use standardized cell lysis protocols that preserve protein integrity

  • Protein loading: 20-40 μg total protein per lane is typically appropriate

  • Dilution ratios: Start with 1:1000 dilution and adjust based on signal intensity

  • Incubation conditions: Primary antibody incubation at 4°C overnight often yields optimal results

  • Detection systems: HRP-conjugated secondary antibodies with enhanced chemiluminescence detection provide suitable sensitivity

The high specificity of rabbit-generated TBCB antibodies for human samples makes them particularly valuable for western blot applications investigating human cell lines or tissue samples .

How can researchers validate TBCB antibody specificity in their experimental systems?

Validation of TBCB antibody specificity should include:

  • Positive controls: Known TBCB-expressing cell lines (e.g., HeLa, HEK293)

  • Negative controls: TBCB-knockdown or knockout samples

  • Pre-absorption tests: Pre-incubating the antibody with recombinant TBCB protein

  • Cross-reactivity assessment: Testing against related tubulin cofactors

  • Molecular weight verification: Confirming detection at the expected molecular weight

These validation steps ensure that observed signals genuinely represent TBCB protein rather than non-specific binding, which is crucial for meaningful interpretation of results.

How can TBCB antibodies be employed to investigate microtubule dynamics in neurodegenerative disorders?

TBCB antibodies provide valuable tools for investigating the role of microtubule regulation in neurodegenerative conditions. Methodological approaches include:

  • Immunohistochemistry of brain tissue sections to compare TBCB expression patterns between healthy and diseased samples

  • Co-immunoprecipitation studies to identify altered interactions between TBCB and other cytoskeletal regulators

  • Live-cell imaging combined with immunofluorescence to track TBCB dynamics in neuronal models

  • Proximity ligation assays to detect changes in TBCB-tubulin interactions in disease states

Understanding TBCB function is vital for unraveling mechanisms underlying neurodegenerative disorders, as microtubule dysregulation is implicated in conditions like Alzheimer's disease and amyotrophic lateral sclerosis .

What role do TBCB antibodies play in cancer research and how can they inform novel therapeutic approaches?

TBCB antibodies serve as critical tools in cancer research through several methodological applications:

  • Expression profiling across cancer cell lines to identify correlations between TBCB levels and malignant phenotypes

  • Immunohistochemical analysis of tumor biopsies to establish prognostic biomarker potential

  • Functional studies using paired antibody detection and genetic manipulation to determine causative roles

  • Mechanistic investigations of TBCB's influence on mitotic spindle formation and cancer cell division

These approaches help elucidate TBCB's role in cancer pathogenesis, potentially revealing novel therapeutic targets within the microtubule regulatory network .

What are common obstacles when using TBCB antibodies for immunofluorescence, and how can they be overcome?

When using TBCB antibodies for immunofluorescence, researchers should address these common challenges:

  • High background signal:

    • Optimize blocking conditions (try 5% BSA or 10% normal serum)

    • Increase washing steps (4-5 washes of 5-10 minutes each)

    • Titrate antibody concentration to minimize non-specific binding

  • Weak or absent signal:

    • Test different fixation methods (paraformaldehyde vs. methanol)

    • Try antigen retrieval techniques if using fixed tissues

    • Extend primary antibody incubation time (overnight at 4°C)

  • Inconsistent results:

    • Standardize cell culture conditions across experiments

    • Maintain consistent imaging parameters

    • Include positive controls in each experimental run

The high specificity of rabbit-generated TBCB antibodies makes them valuable for immunofluorescence applications, particularly in human samples .

How should researchers interpret variations in TBCB detection patterns across different experimental conditions?

Variations in TBCB detection patterns may reflect:

  • Biological factors:

    • Cell cycle-dependent expression (higher during mitosis)

    • Stress-induced alterations in microtubule dynamics

    • Differentiation-related changes in cytoskeletal organization

  • Technical factors:

    • Antibody lot-to-lot variations

    • Differences in sample preparation techniques

    • Detection system sensitivity thresholds

Researchers should systematically test each variable while keeping others constant to identify the source of variation and implement appropriate controls for meaningful data interpretation.

How do antibody approaches for studying TBCB compare with antibodies used in infectious disease research?

While TBCB antibodies target a host cell protein involved in cytoskeletal regulation , antibodies in infectious disease research typically target pathogen-specific proteins. For example, in tuberculosis research, antibodies target Mycobacterium tuberculosis proteins like PstS1 . Key methodological differences include:

ParameterTBCB AntibodiesInfectious Disease Antibodies (e.g., anti-PstS1)
Target originHost proteinPathogen protein
Primary research applicationsCell biology, cancer researchDiagnosis, vaccine development, pathogen inhibition
Validation methodsWestern blot, knockout controlsBacterial growth inhibition assays, epitope mapping
Experimental systemsCell cultures, tissue samplesWhole blood assays, animal infection models
Therapeutic potentialLimited (intracellular target)Direct (accessible extracellular targets)

The methodological approaches differ significantly, with infectious disease antibodies often evaluated for their direct inhibitory effects on pathogens, as demonstrated with anti-PstS1 antibodies that reduced M. tuberculosis levels by 50% in mouse models .

What insights from structural studies of antibody-antigen complexes can inform TBCB antibody design?

Structural studies of antibody-antigen complexes, such as those determining crystal structures of antibodies bound to bacterial proteins at 2.1Å and 2.4Å resolution , provide valuable insights for TBCB antibody design:

  • Epitope identification: Crystal structures reveal specific binding sites, allowing for more precise antibody targeting

  • Binding optimization: Understanding interaction interfaces enables engineering of higher-affinity antibodies

  • Cross-reactivity prediction: Structural information helps predict and minimize unwanted binding to related proteins

  • Functional correlation: Structure-function relationships can explain why some antibodies demonstrate functional effects while others merely bind without consequence

These principles, derived from infectious disease antibody research, can be applied to develop more effective research tools for studying TBCB and its role in cellular processes.

How might TBCB antibodies contribute to emerging single-cell analysis technologies?

TBCB antibodies could enhance single-cell analysis through several methodological approaches:

  • Mass cytometry (CyTOF) integration:

    • Metal-conjugated TBCB antibodies could enable simultaneous detection with dozens of other cellular markers

    • This would allow correlation of TBCB expression with cell cycle status, differentiation state, and signaling pathway activation

  • Spatial transcriptomic combinations:

    • Pairing TBCB immunolabeling with spatial transcriptomics could map cytoskeletal regulation patterns within tissue architecture

    • This would reveal microenvironmental influences on TBCB function

  • Single-cell proteomics:

    • TBCB antibodies could serve as capture reagents for single-cell Western blot or proteomic technologies

    • This would enable assessment of TBCB expression heterogeneity within seemingly homogeneous populations

These applications would significantly advance our understanding of how TBCB regulation varies at the single-cell level, potentially revealing new insights into cell division heterogeneity and cytoskeletal dynamics .

What potential exists for developing TBCB antibodies as diagnostic or prognostic biomarkers?

While current research focuses on TBCB antibodies as laboratory tools , their potential as biomarkers warrants investigation through several methodological approaches:

  • Expression correlation studies:

    • Systematic analysis of TBCB levels across tissue microarrays from various disease states

    • Correlation of expression patterns with patient outcomes and treatment responses

  • Liquid biopsy applications:

    • Development of sensitive ELISA or other immunoassays for detecting TBCB in circulating tumor cells or exosomes

    • Longitudinal monitoring to assess correlation with disease progression

  • Multiparameter biomarker panels:

    • Integration of TBCB detection with other cytoskeletal and cell cycle markers

    • Machine learning approaches to identify diagnostic or prognostic signatures

Understanding TBCB's role in cell division and cytoskeletal organization provides the foundation for exploring its potential as a biomarker for conditions involving these cellular processes .

Product Science Overview

Introduction

Tubulin Folding Cofactor B (TBCB) is a protein that plays a crucial role in the proper folding and assembly of tubulin, which is a key component of the microtubule cytoskeleton. Microtubules are essential for various cellular processes, including cell division, intracellular transport, and maintenance of cell shape.

Gene and Protein Information

The TBCB gene, also known as CKAP1 (Cytoskeleton-Associated Protein 1), encodes the TBCB protein. This gene is located on chromosome 19 in humans . The TBCB protein is involved in the folding of alpha-tubulin intermediates after their interaction with cytosolic chaperonin, leading to the formation of properly folded tubulin heterodimers .

Function and Mechanism

TBCB binds to alpha-tubulin folding intermediates and is involved in the regulation of tubulin heterodimer dissociation . It may also function as a negative regulator of axonal growth . The protein is part of a group of cofactors (TBCA-TBCE) that play a role in microtubule biosynthesis . Specifically, TBCB enhances the folding of alpha-tubulin and contributes to the polymerization of microtubules .

Clinical Significance

Mutations or dysregulation of the TBCB gene have been associated with various diseases, including Primary Ciliary Dyskinesia and Acrorenal Syndrome . These conditions highlight the importance of TBCB in maintaining proper cellular function and structure.

Research and Applications

The mouse anti-human TBCB antibody is commonly used in research to study the expression and function of TBCB in various biological contexts. This antibody is suitable for applications such as Western Blot (WB), Immunoprecipitation (IP), Immunohistochemistry (IHC), and Immunocytochemistry (ICC) . It reacts with both mouse and human samples, making it a versatile tool for studying TBCB in different model systems .

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