- SynonymGFRA2,GDNFRB,NRTNR-ALPHA,NTNRA,RETL2,TRNR2
- SourceHuman GFR alpha-2, His Tag (GF2-H5225) is expressed from human 293 cells (HEK293). It contains AA Ser 22 - Ser 441 (Accession # NP_001486.4).Predicted N-terminus: Ser 22Request for sequence
- Molecular Characterization

This protein carries a polyhistidine tag at the C-terminus.
The protein has a calculated MW of 47.6 kDa. The protein migrates as 60-70 KDaunder reducing (R) condition (SDS-PAGE) due to glycosylation.
- EndotoxinLess than 1.0 EU per μg by the LAL method.
- Purity
>97% as determined by SDS-PAGE.
- 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.

Human GFR alpha-2, His Tag on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 97%.
- BackgroundGDNF family receptor alpha-2 (GFRA2) isalso known as GDNF receptor beta, Neurturin receptor alpha, RET ligand 2, TGF-beta-related neurotrophic factor receptor 2, is a cell membrane protein which belongs to the GDNFR family. Glial cell line-derived neurotrophic factor (GDNF) and neurturin (NTN) are two structurally related, potent neurotrophic factors that play key roles in the control of neuron survival and differentiation. GDNF is a glycosylated, disulfide-bonded homodimer that is distantly related to the TGF-beta superfamily of growth factors. Three receptors for these factors, GFRα-1, GFRα-2 and GFRα-3 have been identified. The isoform 1 of GFRA2 is found in both brain and placenta. GFRA2 mediates the NRTN-induced autophosphorylation and activation of the RET receptor and also able to mediate GDNF signaling through the RET tyrosine kinase receptor. GFRA2 mediates the NRTN-induced autophosphorylation and activation of the RET receptor. It can also mediate GDNF signaling through the RET tyrosine kinase receptor.
- References
- (1)Sanicola M., et al., 1997, Proc Natl Acad Sci U S A 94 (12): 6238–6243.
- (2)Hisasue S.,et al., 2006, Neurobiol Aging. 27 (10): 1524-1530.
- (3)Souza RP., et al., 2010, Psychopharmacology. 210 (3): 347-354.
Please contact us via TechSupport@acrobiosystems.com if you have any question on this product.
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最好能说得具体点,小弟对此几乎一窍不通
谢谢
1. 粗纯:将制备抗体的血清或是腹水,细胞上清,直接用盐析法进行处理,这样可以将这些物质里面的其他杂质去掉,获得蛋白的成分,但是由于是粗纯,里面会混有大量的其他蛋白,这样获得的抗体,纯度较低,用于实验中背景比较高。
2.通用型纯化:用抗体结合蛋白Protein A,Protein G或者Protein L。因为不同来源的抗体和这些抗体结合蛋白的结合能力不同,所以需要根据抗体来源选择使用哪种抗体将诶和蛋白最好。对于有一些单链抗体,则多半使用protein L来进行纯化。经过抗体结合蛋白的亲和纯化后,溶液中基本只保留了抗体的成分,其他蛋白都去掉了,抗体纯度可以比较高。相对来说,这种方法是大规模抗体制备中,用得最多的纯化方法,很多抗体公司都采用这种方法来对抗体进行纯化。
3.特异型纯化:但是有些抗体,需要纯度特别高,特异性特别好,就不能简单采用上述两种方法进行纯化了。必须要通过将抗原固定制备成特异的亲和纯化柱,再纯化抗体。这个时候得到的就全是针对一种抗原的抗体了,特异性最好。当然,由于牵涉到抗原固定等操作,成本相应是最高的。
1. 粗纯:将制备抗体的血清或是腹水,细胞上清,直接用盐析法进行处理,这样可以将这些物质里面的其他杂质去掉,获得蛋白的成分,但是由于是粗纯,里面会混有大量的其他蛋白,这样获得的抗体,纯度较低,用于实验中背景比较高。
2.通用型纯化:用抗体结合蛋白Protein A,Protein G或者Protein L。因为不同来源的抗体和这些抗体结合蛋白的结合能力不同,所以需要根据抗体来源选择使用哪种抗体将诶和蛋白最好。对于有一些单链抗体,则多半使用protein L来进行纯化。经过抗体结合蛋白的亲和纯化后,溶液中基本只保留了抗体的成分,其他蛋白都去掉了,抗体纯度可以比较高。相对来说,这种方法是大规模抗体制备中,用得最多的纯化方法,很多抗体公司都采用这种方法来对抗体进行纯化。
3.特异型纯化:但是有些抗体,需要纯度特别高,特异性特别好,就不能简单采用上述两种方法进行纯化了。必须要通过将抗原固定制备成特异的亲和纯化柱,再纯化抗体。这个时候得到的就全是针对一种抗原的抗体了,特异性最好。当然,由于牵涉到抗原固定等操作,成本相应是最高的。

