- Species ReactivityHuman
- SpecificityDetects human NTB‑A/SLAMF6 in direct ELISAs. In direct ELISAs, no cross-reactivity with recombinant human (rh) BLAME or rhCRACC is observed.
- SourceMonoclonal Mouse IgG2A Clone # 292811
- PurificationProtein A or G purified from hybridoma culture supernatant
- ImmunogenMouse myeloma cell line NS0-derived recombinant human NTB‑A/SLAMF6
Leu28-Lys225
Accession # Q96DU3 - FormulationLyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
- LabelUnconjugated
- Flow Cytometry0.25 µg/106 cellsSee below
- CyTOF-readyReady to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.
- ReconstitutionReconstitute at 0.5 mg/mL in sterile PBS.
- ShippingThe product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
- Stability & StorageUse a manual defrost freezer and avoid repeated freeze-thaw cycles.
- 12 months from date of receipt, -20 to -70 °C as supplied.
- 1 month, 2 to 8 °C under sterile conditions after reconstitution.
- 6 months, -20 to -70 °C under sterile conditions after reconstitution.
- Veillette, A. (2006) Immunol. Rev. 214:22.
- Bottino, C. et al. (2001) J. Exp. Med. 194:235.
- Fraser, C.C. et al. (2002) Immunogenetics 53:843.
- Munitz, A. et al. (2005) J. Immunol. 174:110.
- Valdez, P.A. et al. (2004) J. Biol. Chem. 279:18662.
- Flaig, R.M. et al. (2004) J. Immunol. 172:6524.
- Cao, E. et al. (2006) Immunity 25:559.
- Stark, S. and C. Watzl (2006) Int. Immunol. 18:241.
- Eissmann, P. and C. Watzl (2006) J. Immunol. 177:3170.
- Howie, D. et al. (2005) J. Immunol. 174:5931.
- Kumar, K.R. et al. (2006) Science 312:1665.
- Long Name:NK-T-B Antigen/SLAM Family Member 6
- Entrez Gene IDs:114836 (Human)
- Alternate Names:Activating NK receptor; CD352 antigen; CD352; KALIFLJ50657; Ly108; NK-T-B-antigen; NTBA receptor; NTBA; NTB-A; NTB-AMGC104953; NTBAT- and B-cell antigen; SF2000; SLAM family member 6; SLAMF6
Background:
NTB-A (NK-T-B-antigen), also known as Ly108 and SLAMF6, is a 60 kDa type I transmembrane glycoprotein that belongs to the SLAM subgroup of the CD2 family (1). Mature human NTB-A contains a 205 amino acid (aa) extracellular domain (ECD) with one Ig-like V-set and one Ig-like C2-set domain. It also contains a 21 aa transmembrane segment and an 84 aa cytoplasmic domain with two immunoreceptor tyrosine-based switch motifs (ITSMs) (2, 3). An alternately spliced isoform is truncated in the cytoplasmic domain and lacks the two ITSMs. Within the ECD, human NTB-A shares 48% aa sequence identity with mouse and rat NTB-A. The ECD of human NTB-A shares 19%‑34% aa sequence identity with comparable regions of human 2B4, BLAME, CD2F-10, CD84, CD229, CRACC, and SLAM. NTB-A is expressed on the surface of NK, T, and B lymphocytes as well as eosinophils (2, 4, 5). It interacts homophilically through weak associations between the Ig-V domains (2, 5‑7). NTB-A functions as an activating coreceptor on NK and T cells (2, 5, 6, 8). Tyrosine phosphorylation in the membrane proximal ITSM enables specific association with EAT-2, an interaction that is required for NTB-A mediated cytotoxicity of NK cells (9). Phosphorylation-dependent NTB-A association with SAP is required for full production of IFN-gammaby NK cells (5, 9). This interaction is independent of EAT-2 binding and appears to involve the membrane distal ITSM (5, 9). NTB-A deficient mice show weakened Th2 responses and elevated levels of neutrophil-derived inflammatory mediators (10). On B cells, NTB-A modulates immunoglobulin class switching and the balance between tolerance and autoimmunity (5, 11).
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1.标准曲线的标准品是否一定要梯度稀释,为什么?我试过非梯度稀释的,也可以达到线性R2=0.99.
2.我用了CurveExpert做标曲,自动搜索后发现有10种提供的方程,各种形式的,其中一个十分适合我的实验结果(LogisticModel),而其他的感觉又不适合,因为结果常常为负值。这又是为啥捏?
3.实验的酶标仪最大OD值可以测到4,如果我的测量结果在1.3,是否像其他人所说的>1了就不准确了。
4.利用夹心法进行定量分析是否一定要使用线性方程?
不好意思啊,一下问了这么多问题,最近做了一个月的ELISA,完全摸不清头脑啊。谢谢各位了
在这种测定方法中有3种必要的试剂:①固相的抗原或抗体(免疫吸附剂) ②酶标记的抗原或抗体(标记物)③酶作用的底物(显色剂)
测量时,抗原(抗体)先结合在固相载体上,但仍保留其免疫活性,然后加一种抗体(抗原)与酶结合成的偶联物(标记物),此偶联物仍保留其原免疫活性与酶活性,当偶联物与固相载体上的抗原(抗体)反应结合后,再加上酶的相应底物,即起催化水解或氧化还原反应而呈颜色。
其所生成的颜色深浅与欲测的抗原(抗体)含量成正比。 这种有色产物可用肉眼、光学显微镜、电子显微镜观察,也可以用分光光度计(酶标仪)加以测定。其方法简单,方便迅速,特异性强。向左转|向右转
ELISA双抗体夹心法(enzyme linked immunosorbent assay——sandwich technique)的原理是将特异性抗体结合到固相载体上形成固相抗体,然后和待检血清中的相应抗原结合形成免疫复合物,洗涤后再加酶标记抗体,与免疫复合物中抗原结合形成酶标抗体-抗原-固相抗体复合物,加底物显色,判断抗原含量。
生物帮有相关介绍。编码RNA http://doc.bio1000.com/show-3399.html

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