PD-L1 重组蛋白, Canine (His)

PD-L1 Protein, Canine, Recombinant (His)

产品编号 TMPY-07244

PD-L1 Protein, Canine, Recombinant (His) is expressed in HEK293 Cells. The accession number is NP_001278901.1.

规格	价格	库存	数量
100 μg	¥ 3,820	期货
1 mg	待询	期货

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TargetMol 的所有产品仅用作科学研究或药证申报，不能被用于人体，我们不向个人提供产品和服务。请您遵守承诺用途，不得违反法律法规规定用于任何其他用途。

常见问题解答

问为什么某些重组蛋白溶液中还需要添加载体蛋白？

答载体蛋白通常被用于提高蛋白的稳定性，防止蛋白在冷冻或解冻过程中粘附在管壁上。塑料管对蛋白有一定的吸附能力，这可能导致蛋白和管壁之间难以分离，导致溶液中蛋白的实际浓度下降，从而影响其活性。为减少这种损失，在长期保存重组蛋白产品之前，建议添加常用的载体蛋白溶液，例如0.1% BSA（牛血清白蛋白）、5% HSA（人血清白蛋白）、10% FBS（胎牛血清）或 5% 海藻糖等。如果重组蛋白的浓度较低，强烈建议添加适量的载体蛋白。

问蛋白能保证活性吗？

答我们有现货的产品，有活性数据的话会展示在官网生物活性那栏，没有数据的也不代表就一定没有活性，是我们还没有建立活性检测方法，没有进行测试，但是我们的蛋白都是优先按照有活性的方法去表达纯化的。

问重组蛋白产品该如何保存？

答1) 存储条件:重组蛋白产品收到后，如不立即使用，应当保存在 -20℃ 至 -80℃ 的条件下。冻干粉可稳定保存 12 个月以上，液体类产品在 -80℃ 条件下可保存 6-12 个月。已复溶的重组蛋白样品需尽快用完，如果不能在一周内用完，需在 -20℃ 至 -80℃ 保存，可保存 3 个月以上\n2) 避免反复融冻:重组蛋白产品应注意避免反复冻融，建议将重组蛋白产品分装成多份。分装冻存时，建议选择含有一定浓度载体蛋白的溶液或培养基复溶产品。产品浓度不低于 100 ug/mL，且每管的体积不小于 20 uL。

问为什么重组蛋白的体积和质量与预期不符？

答蛋白冻干粉由蛋白原液冻干而来，冻干粉质量不等同于蛋白质量。由于冻⼲产品的体积大⼩受多种因素影响，包括冻⼲前缓冲液的组分、盐离⼦浓度以及产品本身的浓度等。冻⼲粉可能看上去很多，也可能肉眼不易观察到，这些都是正常现象，请您放心使用。在收到产品后，照常复溶、使用或分装储存即可。

问如何将冻干的重组蛋白配置为储备液？

答在打开盖⼦之前，先使用 10000-12000 rpm 的转速进行离心，20-30 秒，将附着在管盖或管壁上的冻⼲粉收集到管底，以避免损失。大多数蛋白可通过加入无菌蒸馏水来重新溶解。如果需要除水以外的其他稀释剂，产品 COA 中会对其进行说明。一般储备液浓度建议不要低于 100 μg/mL，分装储存避免反复冻融。

产品信息

生物活性	1. Immobilized Recombinant Canine PD-L1/B7-H1 Protein (ECD, His Tag) at 2 μg/mL (100 μL/well) can bind Recombinant Canine PD1/PDCD1/CD279 Protein (Fc Tag), the EC50 is 500-1400 ng/mL. 2. Loaded Recombinant Canine PD-L1/B7-H1 Protein, His Tag on NTA Biosensor, can bind Recombinant Canine PD-1 Protein, hFc Tag with an affinity constant of 44.1 nM as determined in BLI assay (Sartorius Octet RED384) (QC tested).
产品描述	PD-L1 Protein, Canine, Recombinant (His) is expressed in HEK293 Cells. The accession number is NP_001278901.1.
种属	Canine
表达系统	HEK293 Cells
标签	C-His
蛋白编号	NP_001278901.1
蛋白构建	A DNA sequence encoding the Canine CD274 (NP_001278901.1) (Met1-Arg236) was expressed with a polyhistidine tag at the C-terminus.
蛋白纯度	≥ 90% as determined by SDS-PAGE. ≥ 95% as determined by SEC-HPLC.
分子量	26.18 kDa (predicted); 48.1 kDa and 41.7 kDa (reducing contition, due to glycosylation)
内毒素	< 1.0 EU per μg of the protein as determined by the LAL method
缓冲液	Lyophilized from sterile PBS, pH 7.4. Please contact us for any concerns or special requirements. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween 80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hardcopy of datasheet or the lot-specific COA.
复溶方法	Please refer to the lot-specific COA.
存储	It is recommended to store recombinant proteins at -20°C to -80°C for future use. Lyophilized powders can be stably stored for over 12 months, while liquid products can be stored for 6-12 months at -80°C. For reconstituted protein solutions, the solution can be stored at -20°C to -80°C for at least 3 months. Please avoid multiple freeze-thaw cycles and store products in aliquots.
运输方式	In general, Lyophilized powders are shipping with blue ice.
研究背景	Programmed death-1 ligand-1 (PD-L1, CD274, B7-H1) has been identified as the ligand for the immunoinhibitory receptor programmed death-1(PD1/PDCD1) and has been demonstrated to play a role in the regulation of immune responses and peripheral tolerance. PD-L1/B7-H1 is a member of the growing B7 family of immune molecules and this protein contains one V-like and one C-like Ig domain within the extracellular domain, and together with PD-L2, are two ligands for PD1 which belongs to the CD28/CTLA4 family expressed on activated lymphoid cells. By binding to PD1 on activated T-cells and B-cells, PD-L1 may inhibit ongoing T-cell responses by inducing apoptosis and arresting cell-cycle progression. Accordingly, it leads to growth of immunogenic tumor growth by increasing apoptosis of antigen specific T cells and may contribute to immune evasion by cancers. PD-L1 thus is regarded as promising therapeutic target for human autoimmune disease and malignant cancers.Cancer ImmunotherapyCo-inhibitory Immune Checkpoint TargetsImmune CheckpointImmune Checkpoint Blockade: Blocking AntibodiImmune Checkpoint Blockade: PD-L1 / B7-H1 / CImmune Checkpoint Detection: AntibodiesImmune Checkpoint Detection: ELISA AntibodiesImmune Checkpoint Detection: FCM AntibodiesImmune Checkpoint Detection: ICC AntibodiesImmune Checkpoint Detection: IHC AntibodiesImmune Checkpoint Detection: WB AntibodiesImmune Checkpoint ProteinsImmune Checkpoint TargetsImmunotherapyPD-L1 / B7-H1 / CD274 Immune Checkpoint ProteTargeted Therapy

PD-L1 Protein, Canine, Recombinant (His)

PD-L1 Protein, Canine, Recombinant (His)

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