Influenza A H12N5 (A/green-winged teal/ALB/199/1991) Hemagglutinin / HA Protein (His Tag)

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Influenza A H12N5 (A/green-winged teal/ALB/199/1991) Hemagglutinin / HA Protein (His Tag): 产品信息

纯度
> 97 % as determined by SDS-PAGE
内毒素
< 1.0 EU per μg of the protein as determined by the LAL method
生物活性
Testing in progress
蛋白构建
A DNA sequence encoding the extracellular domain (Met 1-Lys 527) of the influenza hemagglutinin (A/green-winged teal/ALB/199/1991 (H12N5)) (ABB88110.1) (HA1+HA2,uncleaved), was fused with a C-terminal polyhistidine tag.
GenBank No.
表达宿主
HEK293 Cells
种属
H12N5
预测 N 端
Asp 18
分子量
The secreted recombinant influenza A H12N5 HA (A/green-winged teal/ALB/199/1991 (H12N5)) comprises 521 amino acids and has a predicted molecular mass of 59.3 kDa. As a result of glycosylation, the apparent molecular mass of the protein is approximately 80-90 kDa in SDS-PAGE under reducing conditions.
缓冲液
Lyophilized from sterile PBS, pH 7.4
1. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 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.
Please refer to the specific buffer information in the hard copy of CoA.
运输方式
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.
稳定性 & 储存条件
Samples are stable for up to twelve months from date of receipt at -70℃
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.
复溶
A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.

Influenza A H12N5 (A/green-winged teal/ALB/199/1991) Hemagglutinin / HA Protein (His Tag): 图片

Hemagglutinin / HA 背景信息

The influenza viral Hemagglutinin (HA) protein is a homo trimer with a receptor binding pocket on the globular head of each monomer.HA has at least 18 different antigens. These subtypes are named H1 through H18.HA has two functions. Firstly, it allows the recognition of target vertebrate cells, accomplished through the binding to these cells' sialic acid-containing receptors. Secondly, once bound it facilitates the entry of the viral genome into the target cells by causing the fusion of host endosomal membrane with the viral membrane.The influenza virus Hemagglutinin (HA) protein is translated in cells as a single protein, HA, or hemagglutinin precursor protein. For viral activation, hemagglutinin precursor protein (HA) must be cleaved by a trypsin-like serine endoprotease at a specific site, normally coded for by a single basic amino acid (usually arginine) between the HA1 and HA2 domains of the protein. After cleavage, the two disulfide-bonded protein domains produce the mature form of the protein subunits as a prerequisite for the conformational change necessary for fusion and hence viral infectivity.
全称
Harvey rat sarcoma viral oncogene homolog
参考文献
  • White JM, Hoffman LR, Arevalo JH, et al. (1997). ""Attachment and entry of influenza virus into host cells. Pivotal roles of hemagglutinin"". In Chiu W, Burnett RM, Garcea RL. Structural Biology of Viruses.
  • Suzuki Y (March 2005). ""Sialobiology of influenza: molecular mechanism of host range variation of influenza viruses"". Biol. Pharm. Bull. 28 (3): 399–408.
  • Senne DA, Panigrahy B, Kawaoka Y, et al. (1996). ""Survey of the hemagglutinin (HA) cleavage site sequence of H5 and H7 avian influenza viruses: amino acid sequence at the HA cleavage site as a marker of pathogenicity potential"". Avian Dis. 40 (2): 425–37

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H3N2 Hemagglutinin / HA 蛋白

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