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Human BTLA Protein

Human BTLA Protein

CAT#: ICP-A025

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Overview Specification

Species	Human
Tag	C-His-Avi
Expression Systems	Expi293
Keywords	Human; C-His-Avi; Expi293

Synonyms	CD272; BTLA; BTLA1; FLJ16065; MGC129743
Background	B- and T-lymphocyte attenuator (BTLA; CD272) is a 35 kDa type I transmembrane glycoprotein in the CD28 family of T cell costimulatory molecules. BTLA is an inhibitory receptor on lymphocytes that negatively regulates antigen receptor signaling via PTPN6/SHP-1 and PTPN11/SHP-2. BTLA may interact in cis (on the same cell) or trans (on other cells) with TNFRSF14.
Source	Recombinant Human BTLA Protein is expressed from Expi293 with His tag and Avi tag at the C-terminal. It contains Lys31-Ser150.
Molecular Weight	The protein has a predicted MW of 16.7 kDa. Due to glycosylation, the protein migrates to 35-45 kDa based on Tris-Bis PAGE result.
Endotoxin	Less than 1 EU per μg by the LAL method.
Purity	>95% as determined by Tris-Bis PAGE. >95% as determined by HPLC.
Formulation	Lyophilized from 0.22 μm filtered solution in PBS (pH 7.4). Normally 5% trehalose is added as protectant before lyophilization.
Reconstitution	Centrifuge tubes before opening. Reconstituting to a concentration more than 100 μg/ml is recommended. Dissolve the lyophilized protein in distilled water.
Storage	-20 to -80℃ for 12 months as supplied from the date of receipt. -20 to -80℃ for 3-6 months in an unopened state after reconstitution. 2-8℃ for 2-7 days after reconstitution.
Notes	Recommend to aliquot the protein into smaller quantities for optimal storage. Please avoid freeze-thaw cycles.

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