Recombinant Human XAF1 protein is a Human Fragment protein, in the 1 to 125 aa range, expressed in Escherichia coli, with >90% purity and suitable for SDS-PAGE.
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Key facts
- Purity
- >90% SDS-PAGE
- Expression system
- Escherichia coli
- Tags
- His tag N-Terminus
- Applications
- SDS-PAGE
- Biologically active
- No
Amino acid sequence
M R G S H H H H H H G M A S M T G G Q Q M G R D L Y D D D D K D R W G S M E G D F S V C R N C K R H V V S A N F T L H E A Y C L R F L V L C P E C E E P V P K E T M E E H C K L E H Q Q V G C T M C Q Q S M Q K S S L E F H K A N E C Q E R P V E C K F C K L D M Q L S K L E L H E S Y C G S R T E L C Q G C G Q F I M H R M L A
Reactivity data
| Application | Reactivity | Dilution info | Notes |
|---|---|---|---|
Application SDS-PAGE | Reactivity Reacts | Dilution info - | Notes - |
Target data
Function
Seems to function as a negative regulator of members of the IAP (inhibitor of apoptosis protein) family. Inhibits anti-caspase activity of BIRC4. Induces cleavage and inactivation of BIRC4 independent of caspase activation. Mediates TNF-alpha-induced apoptosis and is involved in apoptosis in trophoblast cells. May inhibit BIRC4 indirectly by activating the mitochondrial apoptosis pathway. After translocation to mitochondria, promotes translocation of BAX to mitochondria and cytochrome c release from mitochondria. Seems to promote the redistribution of BIRC4 from the cytoplasm to the nucleus, probably independent of BIRC4 inactivation which seems to occur in the cytoplasm. The BIRC4-XAF1 complex mediates down-regulation of BIRC5/survivin; the process requires the E3 ligase activity of BIRC4. Seems to be involved in cellular sensitivity to the proapoptotic actions of TRAIL. May be a tumor suppressor by mediating apoptosis resistance of cancer cells.
Alternative names
BIRC4BP, XIAPAF1, XAF1, XIAP-associated factor 1, BIRC4-binding protein
Recommended products
Recombinant Human XAF1 protein is a Human Fragment protein, in the 1 to 125 aa range, expressed in Escherichia coli, with >90% purity and suitable for SDS-PAGE.
Key facts
- Purity
- >90% SDS-PAGE
- Expression system
- Escherichia coli
- Tags
- His tag N-Terminus
- Applications
- SDS-PAGE
- Biologically active
- No
- Accession
- Q6GPH4-1
- Animal free
- No
- Species
- Human
- Concentration
- Storage buffer
pH: 8
Constituents: 30% Glycerol (glycerin, glycerine), 0.88% Sodium chloride, 0.32% Tris HCl
Sequence info
Amino acid sequence
- M R G S H H H H H H G M A S M T G G Q Q M G R D L Y D D D D K D R W G S M E G D F S V C R N C K R H V V S A N F T L H E A Y C L R F L V L C P E C E E P V P K E T M E E H C K L E H Q Q V G C T M C Q Q S M Q K S S L E F H K A N E C Q E R P V E C K F C K L D M Q L S K L E L H E S Y C G S R T E L C Q G C G Q F I M H R M L A
- Accession
- Q6GPH4
- Protein length
- Fragment
- Predicted molecular weight
- 18.66 kDa
- Amino acids
- 1 to 125
- Nature
- Recombinant
- Tags
- His tag N-Terminus
Specifications
- Form
- Liquid
General info
- Function
Seems to function as a negative regulator of members of the IAP (inhibitor of apoptosis protein) family. Inhibits anti-caspase activity of BIRC4. Induces cleavage and inactivation of BIRC4 independent of caspase activation. Mediates TNF-alpha-induced apoptosis and is involved in apoptosis in trophoblast cells. May inhibit BIRC4 indirectly by activating the mitochondrial apoptosis pathway. After translocation to mitochondria, promotes translocation of BAX to mitochondria and cytochrome c release from mitochondria. Seems to promote the redistribution of BIRC4 from the cytoplasm to the nucleus, probably independent of BIRC4 inactivation which seems to occur in the cytoplasm. The BIRC4-XAF1 complex mediates down-regulation of BIRC5/survivin; the process requires the E3 ligase activity of BIRC4. Seems to be involved in cellular sensitivity to the proapoptotic actions of TRAIL. May be a tumor suppressor by mediating apoptosis resistance of cancer cells.
- Subcellular localisation
- Nucleus, Mitochondrion
Storage
- Shipped at conditions
- Blue Ice
- Appropriate short-term storage duration
- 1-2 weeks
- Appropriate short-term storage conditions
- +4°C
- Appropriate long-term storage conditions
- -20°C
- Aliquoting information
- Upon delivery aliquot
- Storage information
- Avoid freeze / thaw cycle
Supplementary info
- This supplementary information is collated from multiple sources and compiled automatically.
- Activity summary
The XAF1 protein also known as XIAP associated factor 1 plays a role in apoptosis regulation. It weighs approximately 34 kDa and exists in multiple isoforms. The protein is broadly expressed in various tissues including the liver pancreas and heart. XAF1 interacts directly with XIAP (X-linked inhibitor of apoptosis) counteracting its anti-apoptotic effects. XAF1's activity centers on promoting apoptosis by binding to XIAP and inhibiting its function.
- Biological function summary
XAF1 functions in promoting cell death through apoptosis. It forms part of the apoptosome a large protein complex important for the intrinsic pathway of apoptosis. XAF1 exerts its influence by destabilizing XIAP's interaction with caspases releasing them to activate. These interactions trigger a cascade that leads to programmed cell death vital for maintaining cellular balance and response to stress.
- Pathways
XAF1 plays significant role in the apoptosis and cell survival pathways. Within the intrinsic pathway XAF1 associates with Bax and caspase-3 directly impacting mitochondrial membrane permeability and caspase activation. These pathways ensure proper cell turnover and reaction to cellular damage often involving Bcl-2 family proteins and Smac/DIABLO protein for regulation as well.
- Associated diseases and disorders
XAF1's role in cancer and neurological disorders is noteworthy. In several cancer types such as colon and gastric cancers decreased XAF1 expression associates with increased cancer cell survival due to impaired apoptosis. Meanwhile abnormal regulation of XAF1 links to neurodegenerative diseases involving proteins like XIAP and caspase-9 where inhibited apoptosis can lead to accumulation of damaged cells contributing to disease progression.
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1 product image
SDS-PAGE - Recombinant Human XAF1 protein (ab180297)
15% SDS-PAGE analysis of ab180297 (3μg).
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