Recombinant Rat Beta-defensin 4 (rRtBD-4)
英文全名
Recombinant Rat Beta-defensin 4 (rRtBD-4)
英文别名
Defensin beta4
蛋白结构
氨基酸序列
QSINNPITCL TKGGVCWGPC TGGFRQIGTC GLPRVRCCKK K
Accession
Gene ID
产品英文概述
Defensins (alpha and beta) are cationic peptides with antimicrobial activity against Gram-negative and Gram-positive bacteria, fungi, and enveloped viruses. They are 2-6 kDa proteins and take important roles in innate immune system. On the basis of their size and pattern of disulfide bonding, mammalian defensins are classified into alpha, beta and theta categories. β-Defensins are expressed on some leukocytes and at epithelial surfaces. They contain a six-cysteine motif that forms three intra-molecular disulfide bonds. Because β-defensins are cationic peptides, they can therefore interact with the membrane of invading microbes, which are negative due to lipopolysaccharides (LPS) and lipoteichoic acid (LTA) found in the cell membrane. Especially, they have higher affinity to the binding site compared to Ca2+ and Mg2+ ions. Furthermore, they can affect the stability of the membrane. Additionally, they are not only have the ability to strengthen the innate immune system but can also enhance the adaptive immune system by chemotaxis of monocytes, T-lymphocytes, dendritic cells and mast cells to the infection site.
来源
Escherichia coli.
分子量
Approximately 4.4 kDa, a single non-glycosylated polypeptide chain containing 41 amino acids.
生物活性
Fully biologically active when compared to standard. The biologically active determined by a chemotaxis bioassay using human monocytes is in a concentration range of 0.1-100.0 ng/ml.
外观
Sterile filtered white lyophilized (freeze-dried) powder.
配方
Lyophilized from a 0.2 um filtered concentrated solution in 10 mM PB, pH 7.4, 500 mM NaCl.
内毒素
Less than 1 EU/ug of rRtBD-4 as determined by LAL method.
溶解说明
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1 % BSA to a concentration of 0.1-1.0 mg/ml. Stock solutions should be apportioned into working aliquots and stored at ≤ -20 °C. Further dilutions should be made in appropriate buffered solutions.
储存条件
Use 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.- 3 months, -20 to -70 °C under sterile conditions after reconstitution.
参考资料
纯度
> 95 % by SDS-PAGE and HPLC analyses.
SDS-PAGE电泳
包装规格
5ug/100ug/500ug
安全数据表下载 (SDS)
技术参数表下载 (TDS)
品牌链接
Recombinant Rat Beta-defensin 4是ChemWhat品牌授权产品并通过沃尔森销售，下面是ChemWhat上的该产品链接 Recombinant Rat Beta-defensin 4 (rRtBD-4)
