Recombinant Human Small COPII coat GTPase SAR1B (SAR1B SARA2 SARB)

Code CSB-YP020703HU
MSDS
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Source Yeast
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Code CSB-EP020703HU
MSDS
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Source E.coli
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Code CSB-EP020703HU-B
MSDS
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Source E.coli
Conjugate Avi-tag Biotinylated
E. coli biotin ligase (BirA) is highly specific in covalently attaching biotin to the 15 amino acid AviTag peptide. This recombinant protein was biotinylated in vivo by AviTag-BirA technology, which method is BriA catalyzes amide linkage between the biotin and the specific lysine of the AviTag.
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Code CSB-BP020703HU
MSDS
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Source Baculovirus
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Code CSB-MP020703HU
MSDS
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Source Mammalian cell
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Product Details

Purity
>85% (SDS-PAGE)
Target Names
Uniprot No.
Alternative Names
Small COPII coat GTPase SAR1B; EC 3.6.5.2; GTP-binding protein B; GTBPB; Secretion-associated Ras-related GTPase 1B; SAR1B SARA2 SARB
Species
Homo sapiens (Human)
Tag Info
Tag type will be determined during the manufacturing process.
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Form
Liquid or Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
Buffer before Lyophilization
Tris/PBS-based buffer, 6% Trehalose.
Reconstitution
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.
Troubleshooting and FAQs
Storage Condition
Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time
Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
Notes
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet
Please contact us to get it.

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Target Background

Function
GTP-binding protein involved in transport from the endoplasmic reticulum to the Golgi apparatus. Activated by the guanine nucleotide exchange factor PREB. Involved in the selection of the protein cargo and the assembly of the COPII coat complex. Synergizes with the cargo receptor SURF4 to mediate the export of lipoproteins from the endoplasmic reticulum, thereby regulating lipoprotein delivery and the maintenance of lipid homeostasis.
Gene References into Functions
  1. Study data suggest that SAR1A and SAR1B are the critical regulators of trafficking of Nav1.5. Moreover, SAR1A and SAR1B interact with MOG1, and are required for MOG1-mediated cell surface expression and function of Nav1.5. PMID: 30251687
  2. Targeted next generation DNA sequencing revealed several rare heterozygous missense variants in both MTTP and APOB genes known or predicted to be deleterious, in addition to a novel heterozygous missense variant in SAR1B, which encodes the gene causing chylomicron retention disease PMID: 29540175
  3. Report compensatory Sar1a elevation after Sar1b gene deletion in Caco-2/15 cells prevents chylomicron collapse. PMID: 28982670
  4. SAR1B polymorphisms were associated with Alzheimer's disease (AD) risk; results were not significant after correction for multiple tests. Simultaneous screening using SAR1B rs11948613 and ApoE epsilon4 status offered a better sensitivity for AD screening. PMID: 25703997
  5. Our data also suggest that Sar1B overexpression contributes to regulation of CHOL transport and metabolism by facilitating rapid uptake and transport of CHOL. PMID: 25826777
  6. although Sar1A antagonizes the lipoprotein secretion-promoting activity of Sar1B, both isoforms modulate the expression of genes encoding cholesterol biosynthetic enzymes and the synthesis of cholesterol de novo. PMID: 24338480
  7. the behavior of the human of Sar1A and Sar1B, a key component of the COPII family of vesicle coat proteins, was examined. PMID: 22974979
  8. Sar1b expression may promote intestinal lipid transport with the involvement of the coat protein complex II network and the processing of SREBP-1c. PMID: 21836065
  9. Variable phenotypic expression of chylomicron retention disease in a kindred carrying a mutation of the Sara2 gene. PMID: 19846172
  10. identify eight mutations in SARA2 that are associated with three severe disorders of fat malabsorption PMID: 12692552
  11. Sara2 is an important gene in processes involving erythroid cell proliferation and differentiation. PMID: 15943909
  12. Five mutations in the SAR1B gene causing Anderson disease. PMID: 17945526
  13. muscular as well as cardiac abnormalities that could be related to the reported expression of SARA2 in these tissues PMID: 18786134

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Involvement in disease
Chylomicron retention disease (CMRD)
Subcellular Location
Endoplasmic reticulum membrane; Peripheral membrane protein. Golgi apparatus, Golgi stack membrane; Peripheral membrane protein.
Protein Families
Small GTPase superfamily, SAR1 family
Tissue Specificity
Expressed in many tissues including small intestine, liver, muscle and brain.
Database Links

HGNC: 10535

OMIM: 246700

KEGG: hsa:51128

STRING: 9606.ENSP00000385432

UniGene: Hs.432984

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