Key Product Details

Species Reactivity

Human, Mouse, Rat

Applications

Western Blot

Label

Janelia Fluor 669

Antibody Source

Polyclonal Goat IgG

Concentration

Please see the vial label for concentration. If unlisted please contact technical services.

View all GRP78/HSPA5 Antibodies »

Product Specifications

Immunogen

E. coli-derived recombinant human GRP78/HSPA5
Met1-Leu654
Accession # P11021

Specificity

Detects endogenous human, mouse and rat GRP78 in Western blots.

Clonality

Polyclonal

Host

Goat

Isotype

IgG

Applications for GRP78/HSPA5 Antibody [Janelia Fluor® 669]

Application
Recommended Usage

Western Blot

Optimal dilutions of this antibody should be experimentally determined.
Application Notes
Optimal dilution of this antibody should be experimentally determined.

Formulation, Preparation, and Storage

Purification

Antigen Affinity-purified

Formulation

50mM Sodium Borate

Preservative

0.05% Sodium Azide

Concentration

Please see the vial label for concentration. If unlisted please contact technical services.

Shipping

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Store at 4C in the dark.

Background: GRP78/HSPA5

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.

Long Name

75 KD Glucose Regulated Protein

Alternate Names

BIP, HSP70-5, HSPA5

Gene Symbol

HSPA5

Additional GRP78/HSPA5 Products

Product Documents for GRP78/HSPA5 Antibody [Janelia Fluor® 669]

Product Datasheets

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Download SDS

Product Specific Notices for GRP78/HSPA5 Antibody [Janelia Fluor® 669]



Sold under license from the Howard Hughes Medical Institute, Janelia Research Campus.

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.

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