GRP78/HSPA5 Antibody (1H11-1H7) [DyLight 650]

• Reactivity: Hu, Mu, Rt, Bv, Fu, Ha, Pm, Rb, Xp
• Applications: WB, ICC/IF
• Clone: 1H11-1H7
• Clonality: Monoclonal
• Host: Mouse
• Conjugate: DyLight 650

GRP78/HSPA5 Antibody (1H11-1H7) [DyLight 650] Summary

• Description: This conjugate is made on demand and is not held in inventory. Each order represents a unique lot. All conjugates are generated using validated conjugation protocols and meet strict degree of labeling (F/P) specifications; additional information is available upon request. The antibody concentration is provided on the individual product label.
  
  For specialized conjugation needs, like large quantities, specific concentrations, and defined F/P ratios, bulk and custom antibody conjugation services are available.
• Immunogen: His-tagged human GRP78
• Localization: Endoplasmic Reticulum , Endoplasmic Reticulum Lumen , Melanosome
• Marker: ER Stress Marker
• Specificity: Detects a protein with a mass of approx. 78kDa corresponding to GRP78
• Isotype: IgG2b
• Clonality: Monoclonal
• Host: Mouse
• Gene: HSPA5
• Purity: Protein G purified

Applications/Dilutions

• Dilutions:
  • Immunocytochemistry/ Immunofluorescence
  • Western Blot
• Application Notes: Recommended applications are based on validated applications from the unconjugated base product NBP2-12888. This conjugated antibody is not kept in inventory and is made to order using validated conjugation protocols.

Packaging, Storage & Formulations

• Storage: Store at 4C in the dark.
• Buffer: 50mM Sodium Borate
• Preservative: 0.05% Sodium Azide
• Purity: Protein G purified

Alternate Names for GRP78/HSPA5 Antibody (1H11-1H7) [DyLight 650]

• 78 kDa glucose-regulated protein
• BIP
• Endoplasmic reticulum lumenal Ca(2+)-binding protein grp78
• FLJ26106
• GRP78
• GRP-78
• GRP78BIP
• Heat shock 70 kDa protein 5
• heat shock 70kD protein 5 (glucose-regulated protein, 78kD)
• heat shock 70kDa protein 5 (glucose-regulated protein, 78kDa)
• HSP70-5
• HSPA5
• Immunoglobulin heavy chain-binding protein
• MIF2

Background

Within the ER, misfolded proteins are detected by Bip (GPR78). In the presence of misfolded proteins, GPR78 disscociates from PERK, allowing it to homodimerize and autophosphoyate. In its dimerized phosphorylated form, PERK phosphorylates eIF2. The phosphorylation of eIF2 blocks the majority of translation to prevent the continued accumulation of protein in the ER. GRP78 also binds to IRE1 and ATF6 under normal ER conditions, but dissociates upon accumulation of misfolded proteins. Unbound ATF6 is translocated to the gogli where it is converted into a cleaved, active form. The cleaved form of ATF6 is then able to up regulate transcription of UPR genes including XBP1. Activated IRE1 acts as an endoribonuclease to an intron from XBP1 transcripts. The XBP1 splice variant codes for an active transcription factor which activates transcription of P58IPK. P58IPK is a HSP40 protein which binds to and inhibits PERK. Thus, if the accumulated misfolded proteins have been removed, P58IPK acts to shut down the UPR by removing the block to translation.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

Bioinformatics

• Gene Symbol: HSPA5