Human RBX1 Antibody

Catalog # Availability Size / Price Qty
MAB11499-100
MAB11499-SP
Detection of Human RBX1 by Western Blot.
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Human RBX1 Antibody Summary

Species Reactivity
Human
Specificity
Detects human RBX1 in Western blots.
Source
Monoclonal Mouse IgG2B Clone # 1076128
Purification
Protein A or G purified from hybridoma culture supernatant
Immunogen
Spodoptera frugiperda, Sf 21 (baculovirus)-derived human CUL1/RBX1 Complex
Met1-His108
Accession # P62877
Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. See Certificate of Analysis for details.
*Small pack size (-SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
Label
Unconjugated

Applications

Recommended Concentration
Sample
Western Blot
2 µg/mL
K562 human chronic myelongenous leukemia cell line
Simple Western
100 µg/mL
HEK293T human embryonic kidney cell line and K562 human chronic myelogenous leukemia cell line
Immunohistochemistry
3-25 µg/mL
Immersion fixed paraffin-embedded sections of prostate tumor
Immunocytochemistry
3-25 µg/mL
fixed MCF‑7 human breast cancer cell line (Positive) and absent in Jurkat human acute T cell leukemia cell line (Negative)

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Western Blot View Larger

Detection of Human RBX1 by Western Blot. Western Blot shows lysates of K562 human chronic myelogenous leukemia cell line. PVDF membrane was probed with 2 µg/ml of Mouse Anti-Human RBX1 Monoclonal Antibody (Catalog # MAB11499) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF018). A specific band was detected for RBX1 at approximately 15 kDa (as indicated). This experiment was conducted under reducing conditions and using Western Blot Buffer Group 1.

Immunohistochemistry View Larger

Detection of RBX1 in Prostate Tumor. RBX1 was detected in immersion fixed paraffin-embedded sections of prostate tumor using Mouse Anti-Human RBX1 Monoclonal Antibody (Catalog # MAB11499) at 5 µg/ml for 1 hour at room temperature followed by incubation with the HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF007) or the Anti-Mouse IgG VisUCyte™ HRP Polymer Antibody (Catalog # VC001). Before incubation with the primary antibody, tissue was subjected to heat-induced epitope retrieval using VisUCyte Antigen Retrieval Reagent-Basic (Catalog # VCTS021). Tissue was stained using DAB (brown) and counterstained with hematoxylin (blue). Specific staining was localized to the nucleus. View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.

Immunocytochemistry View Larger

Detection of RBX1 in MCF-7 cells (Positive) and Jurkat cells (Negative). RBX1 was detected in fixed MCF‑7 human breast cancer cell line (Positive) and absent in Jurkat human acute T cell leukemia cell line (Negative) using Mouse Anti-Human RBX1 Monoclonal Antibody (Catalog # MAB11499) at 8 µg/ml for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Mouse IgG Secondary Antibody (red; Catalog # NL007) and counterstained with DAPI (blue). Specific staining was localized to the nucleus and cytoplasm. View our protocol for Fluorescent ICC Staining of Cells on Coverslips.

Simple Western View Larger

Detection of Human RBX1 by Simple WesternTM. Simple Western shows lysates of HEK293T human embryonic kidney cell line and K562 human chronic myelogenous leukemia cell line, loaded at 0.5 mg/ml. A specific band was detected for RBX1 at approximately 19 kDa (as indicated) using 100 µg/mL of Mouse Anti-Human RBX1 Monoclonal Antibody (Catalog # MAB11499). This experiment was conducted under reducing conditions and using the 12‑230 kDa separation system.

Reconstitution Calculator

Reconstitution Calculator

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Preparation and Storage

Reconstitution
Reconstitute at 0.5 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.
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Shipping
Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: RBX1

RBX1 is a constitutively expressed RING-box protein that interacts with cullins. The human RBX1 gene consists of 5 exons and 4 introns and encodes 108 amino acids with a molecular weight of about 14kda. It is a major component of E3 ubiquitin ligase. A characteristic feature of RBX1 structure is that it contains a RING-H2 finger domain at the carboxyl terminus.  RBX1 is overexpressed in many primary tumors and is associated with overall survival and lymph node metastasis. In humans, RBX1 has high expression in the heart, skeletal muscle, and testis with less expression in the brain, lung, kidney, and placenta.

References
  1. Shao J, Feng Q, Jiang W, Yang Y, Liu Z, Li L, Yang W, Zou Y. E3 ubiquitin ligase RBX1 drives the metastasis of triple negative breast cancer through a FBXO45-TWIST1-dependent degradation mechanism. Aging (Albany NY). 2022 Jul 8;14(13):5493-5510. doi: 10.18632/aging.204163. Epub 2022 Jul 8. PMID: 35802537; PMCID: PMC9320552. 
  2. Wei D, Sun Y. Small RING Finger Proteins RBX1 and RBX2 of SCF E3 Ubiquitin Ligases: The Role in Cancer and as Cancer Targets. Genes Cancer. 2010 Jul;1(7):700-7. doi: 10.1177/1947601910382776. PMID: 21103004; PMCID: PMC2983490.
Long Name
Ring-Box 1
Entrez Gene IDs
9978 (Human); 56438 (Mouse); 300084 (Rat)
Alternate Names
BA554C12.1; EC 6.3.2.-; FLJ60363; MGC13357; Protein ZYP; RBX1; Regulator of cullins 1; Ring Box 1; RING box protein 1; RING finger protein 75; ring-box 1; ring-box 1, E3 ubiquitin protein ligase; RING-box protein 1; RNF75; RNF75MGC1481; ROC1E3 ubiquitin-protein ligase RBX1; ZYP Protein

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