Recombinant Human BIP Protein is a Human Full Length protein, in the 19 to 654 aa range, <= 0.005 EU/µg endotoxin level and suitable for SDS-PAGE, MS, HPLC.
Images
Key facts
- Purity
- SDS-PAGE
- Endotoxin level
- <= 0.005 EU/µg
- Tags
- Tag free
- Applications
- SDS-PAGE, MS, HPLC
- Biologically active
- No
Amino acid sequence
E E E D K K E D V G T V V G I D L G T T Y S C V G V F K N G R V E I I A N D Q G N R I T P S Y V A F T P E G E R L I G D A A K N Q L T S N P E N T V F D A K R L I G R T W N D P S V Q Q D I K F L P F K V V E K K T K P Y I Q V D I G G G Q T K T F A P E E I S A M V L T K M K E T A E A Y L G K K V T H A V V T V P A Y F N D A Q R Q A T K D A G T I A G L N V M R I I N E P T A A A I A Y G L D K R E G E K N I L V F D L G G G T F D V S L L T I D N G V F E V V A T N G D T H L G G E D F D Q R V M E H F I K L Y K K K T G K D V R K D N R A V Q K L R R E V E K A K R A L S S Q H Q A R I E I E S F Y E G E D F S E T L T R A K F E E L N M D L F R S T M K P V Q K V L E D S D L K K S D I D E I V L V G G S T R I P K I Q Q L V K E F F N G K E P S R G I N P D E A V A Y G A A V Q A G V L S G D Q D T G D L V L L D V C P L T L G I E T V G G V M T K L I P R N T V V P T K K S Q I F S T A S D N Q P T V T I K V Y E G E R P L T K D N H L L G T F D L T G I P P A P R G V P Q I E V T F E I D V N G I L R V T A E D K G T G N K N K I T I T N D Q N R L T P E E I E R M V N D A E K F A E E D K K L K E R I D T R N E L E S Y A Y S L K N Q I G D K E K L G G K L S S E D K E T M E K A V E E K I E W L E S H Q D A D I E D F K A K K K E L E E I V Q P I I S K L Y G S A G P P P T G E E D T A E K D E
Reactivity data
| Application | Reactivity | Dilution info | Notes |
|---|---|---|---|
Application SDS-PAGE | Reactivity Reacts | Dilution info - | Notes - |
Application MS | Reactivity Reacts | Dilution info - | Notes - |
Application HPLC | Reactivity Reacts | Dilution info - | Notes - |
Target data
Function
Endoplasmic reticulum chaperone that plays a key role in protein folding and quality control in the endoplasmic reticulum lumen (PubMed:2294010, PubMed:23769672, PubMed:23990668, PubMed:28332555). Involved in the correct folding of proteins and degradation of misfolded proteins via its interaction with DNAJC10/ERdj5, probably to facilitate the release of DNAJC10/ERdj5 from its substrate (By similarity). Acts as a key repressor of the EIF2AK3/PERK and ERN1/IRE1-mediated unfolded protein response (UPR) (PubMed:1550958, PubMed:11907036, PubMed:19538957). In the unstressed endoplasmic reticulum, recruited by DNAJB9/ERdj4 to the luminal region of ERN1/IRE1, leading to disrupt the dimerization of ERN1/IRE1, thereby inactivating ERN1/IRE1 (By similarity). Also binds and inactivates EIF2AK3/PERK in unstressed cells (PubMed:11907036). Accumulation of misfolded protein in the endoplasmic reticulum causes release of HSPA5/BiP from ERN1/IRE1 and EIF2AK3/PERK, allowing their homodimerization and subsequent activation (PubMed:11907036). Plays an auxiliary role in post-translational transport of small presecretory proteins across endoplasmic reticulum (ER). May function as an allosteric modulator for SEC61 channel-forming translocon complex, likely cooperating with SEC62 to enable the productive insertion of these precursors into SEC61 channel. Appears to specifically regulate translocation of precursors having inhibitory residues in their mature region that weaken channel gating. May also play a role in apoptosis and cell proliferation (PubMed:26045166). (Microbial infection) Plays an important role in viral binding to the host cell membrane and entry for several flaviruses such as Dengue virus, Zika virus and Japanese encephalitis virus (PubMed:15098107, PubMed:28053106, PubMed:33432092). Acts as a component of the cellular receptor for Dengue virus serotype 2/DENV-2 on human liver cells (PubMed:15098107). (Microbial infection) Acts as a receptor for CotH proteins expressed by fungi of the order mucorales, the causative agent of mucormycosis, which plays an important role in epithelial cell invasion by the fungi (PubMed:20484814, PubMed:24355926, PubMed:32487760). Acts as a receptor for R.delemar CotH3 in nasal epithelial cells, which may be an early step in rhinoorbital/cerebral mucormycosis (RCM) disease progression (PubMed:32487760).
Alternative names
GRP78, HSPA5, Endoplasmic reticulum chaperone BiP, 78 kDa glucose-regulated protein, Binding-immunoglobulin protein, Heat shock protein 70 family protein 5, Heat shock protein family A member 5, Immunoglobulin heavy chain-binding protein, GRP-78, BiP, HSP70 family protein 5
Recommended products
Recombinant Human BIP Protein is a Human Full Length protein, in the 19 to 654 aa range, <= 0.005 EU/µg endotoxin level and suitable for SDS-PAGE, MS, HPLC.
Key facts
- Purity
- SDS-PAGE
- Endotoxin level
- <= 0.005 EU/µg
- Tags
- Tag free
- Applications
- SDS-PAGE, MS, HPLC
- Biologically active
- No
- Accession
- P11021-1
- Animal free
- No
- Species
- Human
- Reconstitution
- Reconstitute in PBS
- Concentration
- Storage buffer
pH: 7.4
Constituents: 10.26% Trehalose, 0.727% Dibasic monohydrogen potassium phosphate, 0.248% Potassium phosphate monobasic
Sequence info
Amino acid sequence
- E E E D K K E D V G T V V G I D L G T T Y S C V G V F K N G R V E I I A N D Q G N R I T P S Y V A F T P E G E R L I G D A A K N Q L T S N P E N T V F D A K R L I G R T W N D P S V Q Q D I K F L P F K V V E K K T K P Y I Q V D I G G G Q T K T F A P E E I S A M V L T K M K E T A E A Y L G K K V T H A V V T V P A Y F N D A Q R Q A T K D A G T I A G L N V M R I I N E P T A A A I A Y G L D K R E G E K N I L V F D L G G G T F D V S L L T I D N G V F E V V A T N G D T H L G G E D F D Q R V M E H F I K L Y K K K T G K D V R K D N R A V Q K L R R E V E K A K R A L S S Q H Q A R I E I E S F Y E G E D F S E T L T R A K F E E L N M D L F R S T M K P V Q K V L E D S D L K K S D I D E I V L V G G S T R I P K I Q Q L V K E F F N G K E P S R G I N P D E A V A Y G A A V Q A G V L S G D Q D T G D L V L L D V C P L T L G I E T V G G V M T K L I P R N T V V P T K K S Q I F S T A S D N Q P T V T I K V Y E G E R P L T K D N H L L G T F D L T G I P P A P R G V P Q I E V T F E I D V N G I L R V T A E D K G T G N K N K I T I T N D Q N R L T P E E I E R M V N D A E K F A E E D K K L K E R I D T R N E L E S Y A Y S L K N Q I G D K E K L G G K L S S E D K E T M E K A V E E K I E W L E S H Q D A D I E D F K A K K K E L E E I V Q P I I S K L Y G S A G P P P T G E E D T A E K D E
- Accession
- P11021
- Protein length
- Full Length
- Predicted molecular weight
- 72 kDa
- Amino acids
- 19 to 654
- Nature
- Recombinant
Specifications
- Form
- Lyophilized
General info
- Function
Endoplasmic reticulum chaperone that plays a key role in protein folding and quality control in the endoplasmic reticulum lumen (PubMed:2294010, PubMed:23769672, PubMed:23990668, PubMed:28332555). Involved in the correct folding of proteins and degradation of misfolded proteins via its interaction with DNAJC10/ERdj5, probably to facilitate the release of DNAJC10/ERdj5 from its substrate (By similarity). Acts as a key repressor of the EIF2AK3/PERK and ERN1/IRE1-mediated unfolded protein response (UPR) (PubMed:1550958, PubMed:11907036, PubMed:19538957). In the unstressed endoplasmic reticulum, recruited by DNAJB9/ERdj4 to the luminal region of ERN1/IRE1, leading to disrupt the dimerization of ERN1/IRE1, thereby inactivating ERN1/IRE1 (By similarity). Also binds and inactivates EIF2AK3/PERK in unstressed cells (PubMed:11907036). Accumulation of misfolded protein in the endoplasmic reticulum causes release of HSPA5/BiP from ERN1/IRE1 and EIF2AK3/PERK, allowing their homodimerization and subsequent activation (PubMed:11907036). Plays an auxiliary role in post-translational transport of small presecretory proteins across endoplasmic reticulum (ER). May function as an allosteric modulator for SEC61 channel-forming translocon complex, likely cooperating with SEC62 to enable the productive insertion of these precursors into SEC61 channel. Appears to specifically regulate translocation of precursors having inhibitory residues in their mature region that weaken channel gating. May also play a role in apoptosis and cell proliferation (PubMed:26045166).
- Sequence similarities
Belongs to the heat shock protein 70 family.
- Post-translational modifications
AMPylated by FICD (PubMed:25601083). In unstressed cells, AMPylation at Thr-518 by FICD inactivates the chaperome activity: AMPylated form is locked in a relatively inert state and only weakly stimulated by J domain-containing proteins (By similarity). In response to endoplasmic reticulum stress, de-AMPylation by the same protein, FICD, restores the chaperone activity (By similarity).
Storage
- Shipped at conditions
- Blue Ice
- Appropriate short-term storage conditions
- -20°C
- Appropriate long-term storage conditions
- -20°C
Supplementary info
- This supplementary information is collated from multiple sources and compiled automatically.
- Activity summary
GRP78 also known as BiP or HSPA5 is a protein that plays an important role in protein folding and assembly within the endoplasmic reticulum (ER). It weighs approximately 78 kDa hence the name GRP78. This chaperone protein binds to hydrophobic regions of nascent polypeptides to prevent aggregation and misfolding. GRP78 is expressed in high levels in the ER of cells where it monitors cellular stress and aids in maintaining ER homeostasis.
- Biological function summary
GRP78/BiP is important in the unfolded protein response (UPR) a cellular stress response related to the ER. It is part of a complex that manages protein load inside the ER by regulating the fold of nascent proteins and interacting with other ER stress sensors like IRE1 PERK and ATF6. This function is essential for maintaining proper protein conformation in the ER especially during physiological stress ensuring that only correctly folded proteins proceed to the Golgi apparatus.
- Pathways
GRP78/BiP significantly affects the UPR and apoptosis pathways. By controlling protein folding and quality in the ER GRP78 helps prevent cell death under stress conditions. It works closely with other proteins like ATF6 which activates stress response genes. In normal conditions GRP78 keeps stress transducers inactivated but during stress it dissociates allowing UPR signaling to occur.
- Associated diseases and disorders
GRP78/BiP has been implicated in cancer and neurodegenerative diseases. Overexpression of GRP78 is associated with tumor proliferation and poor prognosis in various cancers as cancer cells heavily rely on its protein-folding capacity to survive. Additionally in neurodegenerative diseases misfolded proteins can accumulate leading GRP78 to attempt counteracting these toxic aggregations highlighting its connection with proteins like tau and amyloid-beta in diseases such as Alzheimer's.
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3 product images
Mass Spectrometry - Recombinant Human BIP Protein (ab287939)
Mass determination by ESI-TOF.
Predicted MW is 70535 Da. (+/- 10 Da by ESI-TOF). Observed MW is 70538.10 Da.
HPLC - Recombinant Human BIP Protein (ab287939)
HPLC analysis of ab287939
SDS-PAGE - Recombinant Human BIP Protein (ab287939)
SDS-PAGE analysis of ab287939
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