| Field | Specification |
|---|---|
| Mfr No | |
| Alternative Names | RNA polymerase sigma factor sigB (Sigma factor B) (Sigma-B) (Protein ABERRANT CHLOROPLAST 1) (RNA polymerase sigma factor sig1) (Atsig1) (Sigma factor 1) (RNA polymerase sigma factor sig2) (Atsig2) (Sigma factor 2) (RNA polymerase sigma factor sigA) (Sigma factor A) (Sigma-A) SIGB ABC1 SIG1 SIG2 SIGA At1g08540 F22O13.2 T27G7.22 |
| Clonality | |
| Conjugate | |
| Form | Liquid |
| Host | |
| Immunogen | Recombinant Arabidopsis thaliana SIGB protein (40-310aa) |
| Isotype | |
| Product Type | |
| Reactivity | |
| Source | This product is a polyclonal antibody purified from rabbit antiserum. |
| Storage | |
| Target | |
| UniProt # |
Overview
This is a polyclonal anti-SIGB antibody raised in Rabbit, with confirmed utility in ELISA, WB. It is designed to detect SIGB protein in Arabidopsis thaliana and supports researchers working in others contexts.
Key elements and design rationale
- Immunogen: Recombinant Arabidopsis thaliana SIGB protein (40-310aa) — determines the epitope region; confirm compatibility with sample preparation and expected post-translational modifications.
- Host species (Rabbit): Requires anti-rabbit-IgG secondary reagents for indirect detection.
- Polyclonal format: Recognizes multiple epitopes for robust signal; inherent lot-to-lot variability requires appropriate controls.
- Isotype (IgG): Matched secondary antibodies and isotype controls required. Compatible with standard Protein A/G purification workflows.
- Purification (Affinity chromatography): Enriches for specific immunoglobulin classes; reduces non-specific background vs. crude antisera.
Biological background
SIGB (also referred to as RNA polymerase sigma factor sigB (Sigma factor B) (Sigma-B) (Protein ABERRANT CHLOROPLAST 1) (RNA polymerase sigma factor sig1) (Atsig1) (Sigma factor 1) (RNA polymerase sigma factor sig2) (Atsig2) (Sigma factor 2) (RNA polymerase sigma factor sigA) (Sigma factor A) (Sigma-A) SIGB ABC1 SIG1 SIG2 SIGA At1g08540 F22O13.2 T27G7.22) is a protein target studied in Arabidopsis thaliana (Mouse-ear cress) systems. Expression, subcellular localization, and post-translational modifications vary across cell types and disease states — factors critical to antibody-based detection design. Consult UniProt, NCBI Gene, and primary literature for current annotation of SIGB biology in others.
Common research applications
- ELISA: Quantification of soluble target in biological fluids or culture supernatants. Ensure samples are within the linear detection range.
- WB: Confirms target molecular weight and distinguishes isoforms under denaturing conditions.
Notes for experimental interpretation
- Isotype controls: Use an isotype-matched (IgG from Rabbit) control at equivalent concentration to assess non-specific background.
- Cross-reactivity: Polyclonal preparations may cross-react with related proteins. Orthogonal validation (siRNA, KO lysate) is recommended.
- Matrix effects: Sample matrix can affect performance; pilot dilution linearity and spike-recovery experiments are advised for quantitative studies.
- Species reactivity: Confirmed for Arabidopsis thaliana. Extrapolation to untested species requires empirical validation.
This product is a polyclonal antibody purified from rabbit antiserum.
SIGB is a protein target in Arabidopsis thaliana biology. This polyclonal antibody raised in Rabbit is designed to detect SIGB in ELISA, WB applications, with IgG isotype.
Reported reactive against Arabidopsis thaliana. Immunogen derived from Arabidopsis thaliana (Mouse-ear cress). Cross-reactivity with other species should not be assumed without documented data or empirical testing.
Reported for ELISA, WB. Each format requires independent dilution optimization and appropriate controls. Unlisted applications require empirical testing.
This non-conjugated IgG antibody requires a compatible secondary. Select anti-rabbit IgG secondary conjugated to your preferred reporter (HRP, AP, fluorophore, or biotin), matched to IgG.
(1) Isotype control — IgG from Rabbit at matching concentration; (2) Positive control — known SIGB-expressing cell/tissue; (3) Negative control — knockdown/knockout sample for specificity; (4) Dilution linearity — verify proportional signal decrease in your matrix.
Customization & Add-ons: Can’t find the antibody you need—or require a custom format for your assay? We can help you source the best match or support custom antibody solutions for diverse research needs, including species and isotype selection, conjugations and labeling (e.g., HRP/AP, biotin, fluorophores), purification grade options (Protein A/G, affinity purified), formulation preferences (buffer selection, carrier-free, glycerol-free), custom concentrations and aliquoting, low-endotoxin options for cell-based work, and application-focused QC/validation support (project dependent). Click Talk to a Scientist to submit a request, email us at support@biohippo.com, or explore our Research Services for additional support—our team will follow up with feasibility details and next steps.
