相关产品推荐更多 >
万千商家帮你免费找货
0 人在求购买到急需产品
- 详细信息
- 技术资料
- 库存:
25
- 英文名:
Recombinant Human LILRB1 protein
- 保质期:
12个月
- 供应商:
上海帛科
- 保存条件:
-20 to -80 °C
- 规格:
50μg、100ug 、1mg
重组蛋白质的可溶性鉴定:
1. 将按上法诱导培养后收集的菌体重悬于裂解液 1 (Lysis buffer under native conditions )中,然后在-80 oC 低温冰箱中放置 10 min。
2. 冰中解冻。
3. 在冰浴上用超声破碎仪破菌 6 次, 每次 10 sec,间歇 10 sec,电压 200-300 V。
4. 10000g,4oC,离心 20min,取上清(为溶液 A), - 20 oC 保存; 另将沉淀用 同样裂解液 1 溶解(为溶液 B),同样 -20 oC 保存,供后继分析使用。
5. 将上述 A、B 溶液和诱导前后的细菌进行 SDS-PAGE 电泳, 考马斯亮蓝染色, 比较分析重组蛋白质的溶解性。如果诱导表达的蛋白质位于 A 溶液中, 则为可溶性蛋白;如果是在 B 溶液中,则为非可溶蛋白。
商品介绍:
内毒素: Please contact with the lab for this information.
蛋白构建: A DNA sequence encoding the human LILRB1 (Ser223-His410) was fused with His tag
制剂: Supplied as solution form in PBS pH 7.5 or lyophilized from PBS pH 7.5.
运输方式: In general, proteins are provided as lyophilized powder/frozen liquid. They are shipped out with dry ice/blue ice unless customers require otherwise.
稳定性&储存: Use a manual defrost freezer and avoid repeated freeze thaw cycles.Store at 2 to 8 °C for one week .Store at -20 to -80 °C for twelve months from the date of receipt.
复溶: Reconstitute in sterile water for a stock solution.A copy of datasheet will be provided with the products, please refer to it for details.
分子别名: Leukocyte immunoglobulin-like receptor subfamily B member 1,LIR-1,Leukocyte immunoglobulin-like receptor 1,CD85 antigen-like family member J,Immunoglobulin-like transcript 2,ILT-2,Monocyte/macrophage immunoglobulin-like receptor 7,MIR-7,CD85j.
背景介绍: Receptor for class I MHC antigens. Recognizes a broad spectrum of HLA-A, HLA-B, HLA-C, HLA-G and HLA-F alleles. Receptor for H301/UL18, a human cytomegalovirus class I MHC homolog. Ligand binding results in inhibitory signals and down-regulation of the immune response. Engagement of LILRB1 present on natural killer cells or T-cells by class I MHC molecules protects the target cells from lysis. Interaction with HLA-B or HLA-E leads to inhibition of FCER1A signaling and serotonin release. Inhibits FCGR1A-mediated phosphorylation of cellular proteins and mobilization of intracellular calcium ions . Recognizes HLA-G in complex with B2M/beta-2 microglobulin and a nonamer self-peptide. Upon interaction with peptide-bound HLA-G-B2M complex, triggers secretion of growth-promoting factors by decidual NK cells. Reprograms B cells toward an immune suppressive phenotype.
重组蛋白质的分离纯化:
1. 将菌体沉淀溶于适量裂解液 2(Lysis buffer under denaturing conditions )中,室温下搅拌和吹打沉淀,避免泡沫生成。
2. 10000g ,4 oC,离心 30 min,收集上清液。
3. 将 Ni-NTAAgarose 充填柱子,并连接于 Pharmarcia 低压液相层析系统,用 5 倍柱体积的裂解液 2 平衡 Ni-NTAAgarose,调节 A280 值至零线。
4. 将适量上清液上样到 Ni-NTAAgarose 柱子中, 并用 lysis buffer 冲洗至 A280 值低于 0.01。
5. 分别用 5 ~ 10 倍柱体积的清洗液 1 和清洗液 2(Washbuffer 1 and 2)清洗柱 子,直至 A280 值低于 0.01。
6. 用洗脱液(Elution buffer)洗脱重组蛋白质, 在 A280 值监测下,收集出现峰 线后含有重组蛋白的所有洗脱液。
表达载体在基因工程有以下几种元件:
(1)选择标志的编码序列;
(2)可控转录的启动子;
(3)转录调控序列(转录终止子,核糖体结合位点);
(4)一个多限制酶切位点接头;
(5)宿主体内自主复制的序列。
重组蛋白质的诱导表达:
1. 挑取转化有质粒的单菌落, 接种于 3ml 选择性 LB 液体培养基中, 37 oC,250 rpm/min 振摇培养过夜。
2. 次日将培养过夜的菌液 500 μl 再接种于 10ml(1:20)选择性 LB 液体培养基 中, 37 oC,250 rpm/min 振摇培养至光密度(OD600=0.6)时,取 1 ml 样本作 为诱导前标本, 10000g 离心 1min 收集菌体沉淀,-20 oC 冻存备用。
3. 加入 1 mol/L IPTG 于菌液中,使 IPTG 终浓度为 1 mM ,37 oC ,250 rpm/min 振摇培养 4 ~ 5 小时。取 1 ml 样本作为诱导后标本,同上法收集菌体沉淀, -20 oC 冻存备用。
4. 将诱导前后菌体沉淀用 20 ~ 40 μl PBS(pH= 8.0)重悬, 加入等体积的 2×SDS 上样缓冲液, 煮沸加热 5min,SDS 聚凝胶(SDS-PAGE)电泳分离 , 考马斯亮蓝染色 3 小时后,脱色观察结果。
5. 选取诱导成功的细菌克隆,扩大诱导规模,收集菌体沉淀,于- 20 oC 保存,准备做下一步分析及纯化。
公司出售的相关产品:
1. 将按上法诱导培养后收集的菌体重悬于裂解液 1 (Lysis buffer under native conditions )中,然后在-80 oC 低温冰箱中放置 10 min。
2. 冰中解冻。
3. 在冰浴上用超声破碎仪破菌 6 次, 每次 10 sec,间歇 10 sec,电压 200-300 V。
4. 10000g,4oC,离心 20min,取上清(为溶液 A), - 20 oC 保存; 另将沉淀用 同样裂解液 1 溶解(为溶液 B),同样 -20 oC 保存,供后继分析使用。
5. 将上述 A、B 溶液和诱导前后的细菌进行 SDS-PAGE 电泳, 考马斯亮蓝染色, 比较分析重组蛋白质的溶解性。如果诱导表达的蛋白质位于 A 溶液中, 则为可溶性蛋白;如果是在 B 溶液中,则为非可溶蛋白。
商品介绍:
| 货号 | BK-DB2950 | 用途 | 仅供科研研究实验 |
| 纯度 | >90% as determined by SDS-PAGE | 预测分子量 | 22.38 kDa |
| 表达宿主 | E.coli | 种属 | Homo sapiens (Human) |
蛋白构建: A DNA sequence encoding the human LILRB1 (Ser223-His410) was fused with His tag
制剂: Supplied as solution form in PBS pH 7.5 or lyophilized from PBS pH 7.5.
运输方式: In general, proteins are provided as lyophilized powder/frozen liquid. They are shipped out with dry ice/blue ice unless customers require otherwise.
稳定性&储存: Use a manual defrost freezer and avoid repeated freeze thaw cycles.Store at 2 to 8 °C for one week .Store at -20 to -80 °C for twelve months from the date of receipt.
复溶: Reconstitute in sterile water for a stock solution.A copy of datasheet will be provided with the products, please refer to it for details.
分子别名: Leukocyte immunoglobulin-like receptor subfamily B member 1,LIR-1,Leukocyte immunoglobulin-like receptor 1,CD85 antigen-like family member J,Immunoglobulin-like transcript 2,ILT-2,Monocyte/macrophage immunoglobulin-like receptor 7,MIR-7,CD85j.
背景介绍: Receptor for class I MHC antigens. Recognizes a broad spectrum of HLA-A, HLA-B, HLA-C, HLA-G and HLA-F alleles. Receptor for H301/UL18, a human cytomegalovirus class I MHC homolog. Ligand binding results in inhibitory signals and down-regulation of the immune response. Engagement of LILRB1 present on natural killer cells or T-cells by class I MHC molecules protects the target cells from lysis. Interaction with HLA-B or HLA-E leads to inhibition of FCER1A signaling and serotonin release. Inhibits FCGR1A-mediated phosphorylation of cellular proteins and mobilization of intracellular calcium ions . Recognizes HLA-G in complex with B2M/beta-2 microglobulin and a nonamer self-peptide. Upon interaction with peptide-bound HLA-G-B2M complex, triggers secretion of growth-promoting factors by decidual NK cells. Reprograms B cells toward an immune suppressive phenotype.
重组蛋白质的分离纯化:
1. 将菌体沉淀溶于适量裂解液 2(Lysis buffer under denaturing conditions )中,室温下搅拌和吹打沉淀,避免泡沫生成。
2. 10000g ,4 oC,离心 30 min,收集上清液。
3. 将 Ni-NTAAgarose 充填柱子,并连接于 Pharmarcia 低压液相层析系统,用 5 倍柱体积的裂解液 2 平衡 Ni-NTAAgarose,调节 A280 值至零线。
4. 将适量上清液上样到 Ni-NTAAgarose 柱子中, 并用 lysis buffer 冲洗至 A280 值低于 0.01。
5. 分别用 5 ~ 10 倍柱体积的清洗液 1 和清洗液 2(Washbuffer 1 and 2)清洗柱 子,直至 A280 值低于 0.01。
6. 用洗脱液(Elution buffer)洗脱重组蛋白质, 在 A280 值监测下,收集出现峰 线后含有重组蛋白的所有洗脱液。
表达载体在基因工程有以下几种元件:
(1)选择标志的编码序列;
(2)可控转录的启动子;
(3)转录调控序列(转录终止子,核糖体结合位点);
(4)一个多限制酶切位点接头;
(5)宿主体内自主复制的序列。
重组蛋白质的诱导表达:
1. 挑取转化有质粒的单菌落, 接种于 3ml 选择性 LB 液体培养基中, 37 oC,250 rpm/min 振摇培养过夜。
2. 次日将培养过夜的菌液 500 μl 再接种于 10ml(1:20)选择性 LB 液体培养基 中, 37 oC,250 rpm/min 振摇培养至光密度(OD600=0.6)时,取 1 ml 样本作 为诱导前标本, 10000g 离心 1min 收集菌体沉淀,-20 oC 冻存备用。
3. 加入 1 mol/L IPTG 于菌液中,使 IPTG 终浓度为 1 mM ,37 oC ,250 rpm/min 振摇培养 4 ~ 5 小时。取 1 ml 样本作为诱导后标本,同上法收集菌体沉淀, -20 oC 冻存备用。
4. 将诱导前后菌体沉淀用 20 ~ 40 μl PBS(pH= 8.0)重悬, 加入等体积的 2×SDS 上样缓冲液, 煮沸加热 5min,SDS 聚凝胶(SDS-PAGE)电泳分离 , 考马斯亮蓝染色 3 小时后,脱色观察结果。
5. 选取诱导成功的细菌克隆,扩大诱导规模,收集菌体沉淀,于- 20 oC 保存,准备做下一步分析及纯化。
公司出售的相关产品:
| Recombnant Human ATP1A1, N-H | KCTD1 Antibody Blocking Peptide |
| Recombinant Human Proteasome subunit alpha type 6 | Recombinant Human CALM1, N-His |
| PTPN12 Antibody Blocking Peptide | Recombinant Sumatran orangutan HSPA1(R72A,V82A,Y149A,D206A,T226A) protein,C-His Tag |
| HTRA1 Antibody Blocking Peptide | Recombinant Human CNTFR, N-His |
| FEM1A Antibody Blocking Peptide | Recombinant Human PROZ, N-GST |
| MTR Antibody Blocking Peptide | Recombinant Human RIPK4 protein , N- GST Tag |
| SPINT2 Antibody Blocking Peptide | Recombinant Human CXCL6 protein |
| WDR26 Antibody Blocking Peptide | DOCK9蛋白封闭多肽 |
| EMX2 Antibody Blocking Peptide | Recombinant Human GSK3A, N-GST |
| Agrin Antibody Blocking Peptide | Recombinant Human BIRC5 protein |
| EFHA2 Antibody Blocking Peptide | Recombinant Human HSP90b1 protein |
| DQX1 Antibody Blocking Peptide | Recombinant Human TGFA/TGF-alpha, N-GST |
| OSBPL5 Antibody Blocking Peptide | Recombinant Human LILRB1 proteinRecombinant Human NT-proBNP protein ,N- His & Flag Tag |
| ZP2 Antibody Blocking Peptide | Recombinant Human ADAM10 protein |
| PLEK2 Antibody Blocking Peptide | Recombinant Human ADAM8 protein |
风险提示:丁香通仅作为第三方平台,为商家信息发布提供平台空间。用户咨询产品时请注意保护个人信息及财产安全,合理判断,谨慎选购商品,商家和用户对交易行为负责。对于医疗器械类产品,请先查证核实企业经营资质和医疗器械产品注册证情况。
技术资料暂无技术资料 索取技术资料
Recombinant Human LILRB1 protein
¥1290 - 3960









