Mouse Ubiquitin Monoclonal Antibody | anti-UBB antibody

Ubiquitin Antibody: Alkaline Phosphatase

Cat. Num. AAA803099

• Reactivity: Human, Mouse, Rat, Bovine
• Applications: Western Blot, ELISA
• Synonyms: Ubiquitin; Monoclonal Antibody; Ubiquitin Antibody: Alkaline Phosphatase; Polyubiquitin B; RPS27A; UBA52; UBB; UBC; ubiquitin B; anti-UBB antibody

• Host: Mouse
• Reactivity: Human, Mouse, Rat, Bovine
• Clonality: Monoclonal
• Isotype: IgG2a Kappa
• Clone Number: 6C11-B3
• Form/Format: Protein G Purified
• Concentration: 1mg/mL (varies by lot)
• Sequence Length: 305

• Applicable Applications for anti-UBB antibody: Western Blot (WB), ELISA (EIA)
• Application Notes: 1:1000 (WB)
• Conjugate: Alkaline Phosphatase
• Storage Buffer: PBS pH7.4, 50% glycerol, 0.09% sodium azide
• Preparation and Storage: -20 degree C

Western Blot (WB)

(Western Blot analysis of Human Cell lysates showing detection of Ubiquitin protein using Mouse Anti-Ubiquitin Monoclonal Antibody, Clone 6C11-B3. Load: 15 ug. Block: 1.5% BSA for 30 minutes at RT. Primary Antibody: Mouse Anti-Ubiquitin Monoclonal Antibody at 1:1000 for 2 hours at RT. Secondary Antibody: Sheep Anti-Mouse IgG: HRP for 1 hour at RT.)

Related Product Information for anti-UBB antibody

Background Info: This antibody recognizes ~10kDa corresponding to free ubiquitin

Scientific Background: Ubiquitin is a small protein that occurs in all eukaryotic cells. The ubiquitin protein itself consists of 76 amino acids and has a molecular mass of about 8.5kDa. Key features include its C-terminal tail and the 7 Lys residues. It is highly conserved among eukaryotic species: Human and yeast ubiquitin share 96% sequence identity (1). The main function of Ubiquitin is to clear abnormal, foreign and improperly folded proteins by targeting them for degradation by the 26S proteosome (2). Ubiquitination represents an essential cellular process affected by a multi-enzyme cascade involving classes of enzymes known as ubiquitin-activating enzymes (E1s), ubiquitin-conjugating enzymes (E2s or Ubcs) and ubiquitin-protein ligases (E3s). Ubiquitin is activated in a two-step reaction by an E1 ubiquitin-activating enzyme in a process requiring ATP as an energy source. The initial step involves production of an ubiquitin-adenylate intermediate. The second step transfers ubiquitin to the E1 active site cysteine residue, with release of AMP. This step results in a thioester linkage between the C-terminal carboxyl group of ubiquitin and the E1 cysteine sulfhydryl group. The third step is a transfer of ubiquitin from E1 to the active site cysteine of a ubiquitin-conjugating enzyme E2 via a trans(thio)esterification reaction. And the final step of the ubiquitylation cascade creates an isopeptide bond between a lysine of the target protein and the C-terminal glycine of ubiquitin. In general, this step requires the activity of one of the hundreds of E3 ubiquitin-protein ligases (often termed simply ubiquitin ligase). E3 enzymes function as the substrate recognition modules of the system and are capable of interaction with both E2 and substrate(2, 3). Ubiquitination also participates in the internalization and degradation of plasma membrane proteins such as some of the TCR subunits while still ER-membrane associated (4). Ubiquitin also plays a role in regulating signal transduction cascades through the elimination inhibitory proteins, such as IkappaBalpha and p27 (5).

Product Categories/Family for anti-UBB antibody

Apoptosis; Cell Signaling

References

1. Wilkinson K.D. (1995) Annu. Rev. Nutr. 15:161-189. 2. Bonifacino J.S., et al. (1998) Annu Rev Cell Dev Biol. 14: 19-57. 3. Boston Biochem: "Ubiquitin Proteasome Pathway Overview" http://www.bostonbiochem.com/upp.php 4. Yang M., et al. (1998) J Exp Med. 187: 1835-1846. 5. Chen Z.J., et al. (1996) Cell 84: 853-862.

NCBI and Uniprot Product Information

• NCBI GI #: 27806505
• NCBI GeneID: 281370
• NCBI Accession #: NP_776558.1
• NCBI GenBank Nucleotide #: NM_174133.2
• UniProt Accession #: P0CG53; O97577; P02248; P02249; P02250; P62990; P80169; Q01235; Q24K23; Q28169; Q28170; Q29120
• Molecular Weight: 34,308 Da
• NCBI Official Full Name: polyubiquitin-B
• NCBI Official Synonym Full Names: ubiquitin B<
• NCBI Official Symbol: UBB
• NCBI Protein Information: polyubiquitin-B
• UniProt Protein Name: Polyubiquitin-B
• Protein Family: Ubiquitin
• UniProt Gene Name: UBB
• UniProt Entry Name: UBB_BOVIN

Uniprot Description

UBB: Ubiquitin 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 Lys residues of the ubiquitin (polyubiquitin chains) or a linear polymer linked via the initiator Met of the ubiquitin (linear polyubiquitin chains). Polyubiquitin chains, when attached to a target protein, have different functions depending on the Lys residue of the ubiquitin that is linked: Lys-6-linked may be involved in DNA repair; Lys-11-linked is involved in ERAD (endoplasmic reticulum-associated degradation) and in cell-cycle regulation; Lys-29-linked is involved in lysosomal degradation; Lys-33-linked is involved in kinase modification; Lys-48-linked is involved in protein degradation via the proteasome; Lys-63-linked is involved in endocytosis, DNA-damage responses as well as in signaling processes leading to activation of the transcription factor NF-kappa-B. Linear polymer chains formed via attachment by the initiator Met lead to cell signaling. Ubiquitin is usually conjugated to Lys residues of target proteins, however, in rare cases, conjugation to Cys or Ser residues has been observed. When polyubiquitin is free (unanchored-polyubiquitin), it also has distinct roles, such as in activation of protein kinases, and in signaling. Belongs to the ubiquitin family.

Protein type: Transcription regulation; Ubiquitin-like modifier; Cell cycle regulation; Motility/polarity/chemotaxis; Cell development/differentiation; Apoptosis

Cellular Component: cytoplasm; nucleus

Molecular Function: protein binding