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Human VAPB / VAMP-associated protein B/C Protein (His Tag)

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Human VAPB Protein Product Information
Synonym:RP5-1018E9.1, ALS8, VAMP-B, VAP-B
Protein Construction:A DNA sequence encoding the human VAPB (O95292-1) N-terminal fragment (Met 1-Pro 132) was fused with a polyhistidine tag at the C-terminus.
Expressed Host:E. coli
Shipping:In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.
Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
Human VAPB Protein QC Testing
Purity:> 97 % as determined by SDS-PAGE
Bio-Activity:Measured by its ability to bind recombinant human EphB2 in a functional ELISA.
Endotoxin:Please contact us for more information.
Stability:Samples are stable for up to twelve months from date of receipt at -70℃
Predicted N Terminal:Met
Molecule Mass:The recombinant human VAPB consisting of 142 amino acids and has a calculated molecular mass of 16.3 kDa. It migrates as an approximately 18 kDa band in SDS-PAGE under reducing conditions.
Formulation:Lyophilized from sterile PBS, pH 8.0
1. Normally 5 % - 8 % trehalose and mannitol are added as protectants before lyophilization. Specific concentrations are included in the hardcopy of COA.
2. Please contact us for any concerns or special requirements.
Human VAPB Protein Usage Guide
Storage:Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
Reconstitution:A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.
Other VAPB Recombinant Protein Products
VAPB/VAP-B Background

Vesicle-associated membrane protein-associated protein B / C, also known as VAMP-B/VAMP-C, VAMP-associated protein B/C, VAP-B/VAP-C and VAPB, is a single-pass type IV membrane protein which belongs to the VAMP-associated protein ( VAP ) family. VAPB contains one MSP domain. VAPB may play a role in vesicle trafficking. VAPB forms a heterodimer with VAPA. VAPB interacts with VAMP1 and VAMP2. Defects in VAPB are the cause of amyotrophic lateral sclerosis type 8 ( ALS8 ) which is a familial form of amyotrophic lateral sclerosis, a neurodegenerative disorder affecting upper and lower motor neurons and resulting in fatal paralysis. Defects in VAPB are also a cause of spinal muscular atrophy autosomal dominant Finkel type ( SMAF ) which is characterized by proximal muscle weakness that begins in the lower limbs and then progresses to upper limbs.

Human VAPB/VAP-B References
  • Nishimura Y., et al., 1999, Biochem. Biophys. Res. Commun. 254:21-26.
  • Gevaert K., et al., 2003, Nat. Biotechnol. 21:566-569.
  • Hamamoto I., et al., 2005, J. Virol. 79:13473-13482.
  • Choudhary C. et al., 2009, Science 325:834-840.
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    Catalog: 10754-H08E-50
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