Search
Invitrogen
Human CD19 His-tag Recombinant Protein
{{$productOrderCtrl.translations['antibody.pdp.commerceCard.promotion.promotions']}}
{{$productOrderCtrl.translations['antibody.pdp.commerceCard.promotion.viewpromo']}}
{{$productOrderCtrl.translations['antibody.pdp.commerceCard.promotion.promocode']}}: {{promo.promoCode}} {{promo.promoTitle}} {{promo.promoDescription}}. {{$productOrderCtrl.translations['antibody.pdp.commerceCard.promotion.learnmore']}}
Additional Information:
{{banner.description}}
产品信息
A42607
产品规格
种属
Human
Expression System
HEK293 cells
氨基酸序列
Human CD19, amino acids Met1-Lys291 (Accession # P15391-1) with a C-terminal His-tag
标签
His-tag
分子量
31.6 kDa
分类
Recombinant
类型
Protein
纯度
>90% by SDS-PAGE
内毒素浓度
<1.0 EU/µg
活性
Immobilized Human CD19 His-tag Recombinant Protein at 2 µg/mL (100 µL/well) can bind Monoclonal Anti-Human CD19 Antibody (IgG1) , the EC50 is 8-24 ng/mL.
偶联物
Unconjugated
Unconjugated
Unconjugated
形式
Lyophilized
Amount
50 µg
纯化类型
purified
保存液
PBS, pH 7.4, with 5% mannitol, 5% trehalose, 0.01% Tween 80
内含物
no preservative
保存条件
-20°C or -80°C if preferred
运输条件
Ambient
产品详细信息
Reconstitution: Dissolve the protein in sterile double-distilled water to a concentration of 0.2 mg/mL or lower. It is recommended that the protein be aliquoted and used as soon as possible. Store aliquots under sterile conditions at -20°C. Avoid repeated freeze-thaw cycles.
靶标信息
CD19 is a member of the immunoglobulin superfamily, characterized by two Ig-like domains, and is expressed on B cells throughout all stages of development, excluding terminally differentiated plasma cells. It is also expressed on follicular dendritic cells and has been observed on myeloid leukemia cells, particularly those of monocytic lineage. CD19 is considered the earliest and broadest B cell-restricted antigen, and its expression is found in all B cell precursor leukemias. CD19 forms a multimolecular complex with CD21, CD81, Leu13, MHC class II, and the B cell receptor (BCR), playing a crucial role in B cell signaling. As a signal-amplifying coreceptor for the BCR, CD19 lowers the threshold for antigen receptor-dependent stimulation, allowing B cells to respond specifically and sensitively to various antigens through low-affinity antigen receptors. Signaling through CD19 induces tyrosine phosphorylation, calcium flux, and proliferation of B cells. Beyond its role as a BCR coreceptor, CD19 can also signal independently of BCR co-ligation, serving as a central regulatory component upon which multiple signaling pathways converge. This makes CD19 an important functional regulator of both normal and malignant B cell proliferation. Mutations in the CD19 gene can result in hypogammaglobulinemia, a condition characterized by low levels of immunoglobulins, while CD19 overexpression can lead to B cell hyperactivity. CD19 is expressed on 100% of peripheral B cells, as defined by the expression of kappa or lambda light chains, underscoring its significance in B cell function and immune regulation.
仅用于科研。不用于诊断过程。未经明确授权不得转售。
篇参考文献 (0)
您是否在文献中引用过该产品？请点击下方按钮邮件告知我们。
生物信息学
蛋白别名: B-lymphocyte antigen CD19; B-lymphocyte surface antigen B4; CD19; CD19 differentiation antigen; Differentiation antigen CD19; Leu-12; T-cell surface antigen Leu-12; unnamed protein product
基因别名: B4; CD19; CVID3
UniProt ID: (Human) P15391
Entrez Gene ID: (Human) 930
Disclaimer
Clicking the images or links will redirect you to a website hosted by BenchSci that provides third-party scientific content. Neither the content nor the BenchSci technology and processes for selection have been evaluated by us; we are providing them as-is and without warranty of any kind, including for use or application of the Thermo Fisher Scientific products presented.
