CD45 Protein, Human, Recombinant (aa 26-577, hFc)

PTPRC (also known as CD45),T cells require the protein tyrosine phosphatase CD45 to detect and respond to antigen because it activates the Src family kinase Lck, which phosphorylates the T cell antigen receptor (TCR) complex. CD45 ativates Lck by opposing the negative regulatory kinase Csk. Paradoxically, CD45 has also been implicated in suppressing TCR signaling by dephosphorylating the same signaling motifs within the TCR complex upon which Lck acts.

Pack Size	Availability	Price/USD
100 μg	5 days	$ 487.00
500 μg	5 days	$ 1,950.00
1 mg	5 days	$ 3,250.00

Pack Size

Availability

Price/USD

Quantity

100 μg

5 days

$ 487.00

500 μg

5 days

$ 1,950.00

1 mg

5 days

$ 3,250.00

Description

Species	Human
Expression System	HEK293
Tag	C-hFc
Accession Number	P08575-3
Synonyms	CD45, CD45R, LCA, PTPRC, L-CA, T200, B220, GP180, LY5, EC 3.1.3.48
Construction	Recombinant Human CD45/PTPRC Protein is expressed from HEK293 with hFc tag at the C-Terminus. It contains Gln26-Lys577.[Accession \|P08575-3]
Protein Purity	> 95% as determined by Tris-Bis PAGE; > 95% as determined by HPLC
Molecular Weight	The protein has a predicted MW of 87.53 kDa. Due to glycosylation, the protein migrates to 120-160 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	PTPRC (also known as CD45),T cells require the protein tyrosine phosphatase CD45 to detect and respond to antigen because it activates the Src family kinase Lck, which phosphorylates the T cell antigen receptor (TCR) complex. CD45 ativates Lck by opposing the negative regulatory kinase Csk. Paradoxically, CD45 has also been implicated in suppressing TCR signaling by dephosphorylating the same signaling motifs within the TCR complex upon which Lck acts.