- SynonymLysyl oxidase homolog 2,LOXL2
- SourceBiotinylated Human LOXL2, His,Avitag (LO2-H82E3) is expressed from human 293 cells (HEK293). It contains AA Gln 26 - Gln 774 (Accession # Q9Y4K0-1).Predicted N-terminus: Gln 26
- Molecular Characterization

This protein carries a polyhistidine tag at the C-terminus, followed by an Avi tag.
The protein has a calculated MW of 87.8 kDa.
- BiotinylationBiotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.
- Endotoxin
- Formulation
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4. Normally trehalose is added as protectant before lyophilization.
Contact us for customized product form or formulation.
- Reconstitution
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
- Storage
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
- -20°C to -70°C for 12 months in lyophilized state;
- -70°C for 3 months under sterile conditions after reconstitution.
- BackgroundLysyl oxidase homolog 2 is also known as LOXL2, Lysyl oxidase-like protein 2, which is expressed in many tissues, highest expression in reproductive tissues, placenta, uterus and prostate, Up-regulated in a number of cancers cells and tissues. LOXL2 mediates the post-translational oxidative deamination of lysine residues on target proteins leading to the formation of deaminated lysine (allysine). When secreted in extracellular matrix, promotes cross-linking of extracellular matrix proteins by mediating oxidative deamination of peptidyl lysine residues in precursors to fibrous collagen and elastin. LOXL2 acts as a regulator of sprouting angiogenesis, probably via collagen IV scaffolding. When nuclear, acts as a transcription corepressor and specifically mediates deamination of trimethylated "Lys-4" of histone H3 (H3K4me3), a specific tag for epigenetic transcriptional activation. LOXL2 acts as a regulator of chondrocyte differentiation, probably by regulating expression of factors that control chondrocyte differentiation.
- References
- (1)Ota T.,we al.,2004, Nat. Genet. 36:40-45.
- (2)Jourdan-Le Saux C.,et al., 1999, J. Biol. Chem. 274:12939-12944.
- (3)Lugassy J.,et al., 2012, J. Biol. Chem. 287:3541-3549.
Please contact us via TechSupport@acrobiosystems.com if you have any question on this product.
ebiomall.com
>
>
>
>
>
>
>
>
>
>
>
>
文章原文链接http://www.jbc.org/content/282/23/16776.long
本试验根据《中国药典》2015年版紫外分光光度法吸收系数法进行制定,本试验方法采用的方法学验证内容如下:
1.线性及范围
取IgG标准品配制5个不同浓度被测样品,并进行测定,绘制标准曲线,得到回归方程及范围。
2.准确度
已回收率对准确度进行验证。以已知含量的IgG标准品配制供试品,配制三个浓度,每个浓度平均测定三次。计算回收率。
3.精密度
IgG标准品配制供试品,平行测定六次。
4.溶液稳定性试验
至少持续2h的溶液稳定性考察。
5.干扰试验
空白溶液中加入辅料,在280nm处测定吸收,确定辅料是否对样品的吸收造成干扰。
以上,请大神指正。
补充问题,在专属性验证上,仅做辅料干扰是不是太少了?是否再进行强降解实验呢?因为其中包含了蛋白质A、外源性DNA及宿主细胞蛋白残留。我是否应该针对这三种杂质进行专属性试验?该如何进行呢?
问题分析:单纯疱疹是由单纯疱疹病毒感染引起的.单纯疱疹病毒最大的特点是,这种病毒很难被“斩尽杀绝”,总有一少部分病毒在体内潜伏下来,伺机作乱.这些病毒何时再次致病很难预料,一般情况下发热,情绪紧张,月经,妊娠等因素都可能引起发病或复发.发病后即使不经治疗,患者2--4周后也可自愈,只是部分病毒仍然潜伏在体内.目前对这种由单纯疱疹病毒引起的疾病,没有很好的药物治疗,发作时主要使用各种洛韦类抗病毒药,如阿昔洛韦等.主要还是要保持良好的情绪,避免劳累等.
指导建议:IGG和IGM是两种不同的免疫球蛋白,两者产生的先后顺序不一样,一般来说IGM阳性提示在急性感染期,IGG阳 性有可能与以前曾经有过感染有关的。aware可自测不用抽血祝您健康天 猫!
2-IgM也是一种特异性感染指标,但在人体内持续时间不长(有时是30天更短),往往是传染病的近期感染指标。呈阴性是指:你近期没有感染过结核杆菌。

