Siglec-5 Protein (Primary Amine Labeling), Human, Recombinant (hFc), Biotinylated

Group B Streptococcus (GBS) causes invasive infections in human newborns. the GBS β-protein attenuates innate immune responses by binding to sialic acid-binding immunoglobulin-like lectin 5 (Siglec-5), an inhibitory receptor on phagocytes.the polymorphism could influence the risk of prematurity among human fetuses of mothers colonized with GBS. This first functionally proven example of a paired receptor system in the Siglec family has multiple implications for regulation of host immunity.

Pack Size	Availability	Price/USD
100 μg	5 days	$ 814.00
500 μg	5 days	$ 3,250.00
1 mg	5 days	$ 5,440.00

Pack Size

Availability

Price/USD

Quantity

100 μg

5 days

$ 814.00

500 μg

5 days

$ 3,250.00

1 mg

5 days

$ 5,440.00

Description

Species	Human
Expression System	HEK293
Tag	C-hFc
Accession Number	O15389
Synonyms	CD170, CD33 antigen-like 2, OBBP2, SIGLEC5, OB-BP2, CD33L2
Construction	Recombinant Biotinylated Human Siglec-5/CD170 Protein is expressed from HEK293 with hFc tag at the C-Terminus. It contains Glu17-Thr434.[Accession \|O15389]
Protein Purity	> 95% as determined by Tris-Bis PAGE
Molecular Weight	The protein has a predicted MW of 73.1 kDa. Due to glycosylation, the protein migrates to 90-115 kDa based on Tris-Bis PAGE result.

Endotoxin	Less than 1EU per μg by the LAL method.
Formulation	Lyophilized from 0.22μm filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.
Reconstitution	Centrifuge the tube before opening. Reconstituting to a concentration more than 100 μg/ml is recommended. Dissolve the lyophilized protein in distilled water.
Stability & Storage	-20 to -80°C for 12 months as supplied from date of receipt. -20 to -80°C for 3-6 months in unopened state after reconstitution. 2-8°C for 2-7 days after reconstitution. Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.
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.
Research Background	Group B Streptococcus (GBS) causes invasive infections in human newborns. the GBS β-protein attenuates innate immune responses by binding to sialic acid-binding immunoglobulin-like lectin 5 (Siglec-5), an inhibitory receptor on phagocytes.the polymorphism could influence the risk of prematurity among human fetuses of mothers colonized with GBS. This first functionally proven example of a paired receptor system in the Siglec family has multiple implications for regulation of host immunity.