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Key Specifications Table
| Species Reactivity | Key Applications | Host | Format | Antibody Type |
|---|---|---|---|---|
| H, B | WB | Rb | Affinity Purified | Polyclonal Antibody |
| Description | |
|---|---|
| Catalogue Number | 07-375 |
| Replaces | 04-454 |
| Brand Family | Upstate |
| Trade Name |
|
| Description | Anti-Ubiquitin Antibody |
| Alternate Names |
|
| Background Information | Ubiquitin (Ub) is initially produced as a 229 amino acids Polyubiquitin-B (UniProt: P0CG47) precursor protein encoded by the UBB gene (Gene ID: 7314) or a 685 amino acids Polyubiquitin-C precursor protein (UniProt: P0CG48) encoded by the UBC gene (Gene ID: 7316) in human. Ub exists either covalently attached to another protein, or free (unanchored). When covalently bound, it is conjugated to target proteins via an isopeptide bond either as a monomer (monoubiquitin), a polymer linked via different lysine residues of the ubiquitin (polyubiquitin chains) or a linear polymer linked via the initiator methionine (Met) of the ubiquitin (linear polyubiquitin chains). Ub is linked covalently via its carboxyl terminus (Gly76) to lysine residues in target proteins. In a given target lysine residue can be linked to one single Ub molecule (monoubiquitylated) or to a chain of Ub molecules (polyubiquitylated). In a polyUb chain, Ub molecules can be linked through one of the seven lysine residues (K6, K11, K27, K29, K33, K48, and K63). Polyubiquitin chains, when attached to a target protein, have different functions depending on the lysine residue of the ubiquitin that is linked. For example, lysine 6-linked may be involved in DNA repair; lysine 11-linked is involved in endoplasmic reticulum-associated degradation (ERAD) and in cell-cycle regulation, and lysine 29-linked is involved in lysosomal degradation. Lysine 48-linked chains mark proteins for proteasomal degradation, while lysine 63-linked chains are involved in endocytosis, DNA-damage responses, and in signaling leading to activation of the transcription factor NF- B. Ubiquitin undergoes phosphorylation at the serine 57 by a ubiquitin kinase and this phosphorylation is an important modifier of ubiquitin function, particularly in response to proteotoxic stress. This phosphorylation may also be a deciding factor whether ubiquitin is recycled or degraded during multi-vesicular body sorting on endosomes. (Ref.: Hepowit, NL., et al (2020). eLife 9; e58155; Lee, S., et al. (2017) eLife. 6; e29176). |
| Product Information | |
|---|---|
| Format | Affinity Purified |
| Control |
|
| Presentation | Purified rabbit polyclonal antibody in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide with 30% glycerol. |
| Quality Level | MQ100 |
| Applications | |
|---|---|
| Application | Anti-Ubiquitin, Cat. No. 07-375, is a rabbit polyclonal antibody that detects ubiquitin and ubiquitinylated proteins and is tested for use in Western Blotting. |
| Key Applications |
|
| Application Notes | Western Blotting Analysis: A 1:2,000 dilution from a representative lot detected ubiquitin in HeLa cells acid extract. |
| Biological Information | |
|---|---|
| Immunogen | Full-length ubiquitin isolated from bovine erythrocytes. |
| Concentration | Please refer to the Certificate of Analysis for the lot-specific concentration. |
| Host | Rabbit |
| Specificity | This rabbit polyclonal antibody specifically detects Ubiquitin. |
| Isotype | IgG |
| Species Reactivity |
|
| Species Reactivity Note | Bovine, Human. Predicted to react with Vertebrates. |
| Antibody Type | Polyclonal Antibody |
| Entrez Gene Number |
|
| Entrez Gene Summary | This gene encodes ubiquitin, one of the most conserved proteins known. Ubiquitin is required for ATP-dependent, nonlysosomal intracellular protein degradation of abnormal proteins and normal proteins with a rapid turnover. Ubiquitin is covalently bound to proteins to be degraded, and presumably labels these proteins for degradation. Ubiquitin also binds to histone H2A in actively transcribed regions but does not cause histone H2A degradation, suggesting that ubiquitin is also involved in regulation of gene expression. This gene consists of three direct repeats of the ubiquitin coding sequence with no spacer sequence. Consequently, the protein is expressed as a polyubiquitin precursor with a final amino acid after the last repeat. Aberrant form of this protein has been noticed in patients with Alzheimers and Down syndrome. |
| Gene Symbol |
|
| Purification Method | Protein A Purfied |
| UniProt Number |
|
| UniProt Summary | FUNCTION: SwissProt: P62988 # Protein modifier which can be covalently attached to target lysines either as a monomer or as a lysine-linked polymer. Attachment to proteins as a Lys-48-linked polymer usually leads to their degradation by proteasome. Attachment to proteins as a monomer or as an alternatively linked polymer does not lead to proteasomal degradation and may be required for numerous fonctions, including maintenance of chromatin structure, regulation of gene expression, stress response, ribosome biogenesis and DNA repair. SIZE: 76 amino acids; 8565 Da SUBCELLULAR LOCATION: Cytoplasm. Nucleus. PTM: Several types of polymeric chains can be formed, depending on the lysine used for the assembly. SIMILARITY: SwissProt: P62988 ## Belongs to the ubiquitin family. MISCELLANEOUS: Ubiquitin is synthesized as a polyubiquitin precursor with exact head to tail repeats, the number of repeats differ between species and strains. In some species there is a final amino-acid after the last repeat, here in human a Val. Some ubiquitin genes contain a single copy of ubiquitin fused to a ribosomal protein (either L40 or S27a). |
| Molecular Weight | ~8 kDa observed. Uncharacterized bands may be observed in some lysate(s). |
| Product Usage Statements | |
|---|---|
| Quality Assurance | Evaluated by Western Blotting in lysate from bovine erythrocytes. Western Blotting Analysis: A 1:2,000 dilution of this antibody detected Ubiquitin isolated from bovine erythrocytes. |
| Usage Statement |
|
| Storage and Shipping Information | |
|---|---|
| Storage Conditions | Store at -10°C to -25°C. Handling Recommendations: Upon receipt and prior to removing the cap, centrifuge the vial and gently mix the solution. Aliquot into microcentrifuge tubes and store at -20°C. Avoid repeated freeze/thaw cycles, which may damage IgG and affect product performance. |
| Packaging Information | |
|---|---|
| Material Size | 200 µg |