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Human ILT3 Protein, Fc Tag

Human ILT3 Protein, Fc Tag

产品编号

KMP2278

别名

白细胞免疫球蛋白样受体 B 亚家族成员 4, Leukocyte immunoglobulin-like receptor subfamily B member 4, ILT3

规格
  • 50ug
  • 100ug
  • 200ug
产品介绍
Catalog NumberKMP2278
Alias白细胞免疫球蛋白样受体 B 亚家族成员 4, Leukocyte immunoglobulin-like receptor subfamily B member 4, ILT3
Size50ug, 100ug, 200ug
Product DescriptionThe Human ILT3 Protein(KMP2278) is produced in HEK293 Cells and the target gene encoding Gln22-Glu259 is expressed with a Fc tag at the C-terminus.
Molecular NameILT3
Product IntroductionILT3(LILRB4):免疫球蛋白样转录抑制受体,以跨膜形式参与免疫抑制信号的传递。
Molecular Weight19.13 kDa
Expression SystemHEK293 Cells
SpeciesHuman
Purity>90%
PurificationAffinity Purification
Uniprot IDQ8NHJ6
Storage ConditionAliquot and store at -20℃ to -80℃. Avoid repeated freezing and thawing cycles.
FormulationPBS, pH7.4
Shipping ConditionIn general, the proteins are provided as lyophilized powder which are shipped at ambient temperature. They are shipped out in dry ice if supplied in liquid form.
BackgroundMouse Leukocyte Immunoglobulin-like Receptor Subfamily B Member 4(LILRB4/CD85k/ILT3) is an approximately transmembrane glycoprotein that negatively regulates immune cell activation. Mouse LILRB4 consists of a 215 amino acid(aa) extracellular domain with two Ig-like domains, a 22 aa transmembrane segment, and a 75 aa cytoplasmic domain with 3 immunoreceptor tyrosine-based inhibitory motifs(ITIM). Within the ECD, mouse LILRB4 shares 45% and 77% aa sequence identity with human and rat LILRB4, respectively. Alternative splicing of mouse LILRB4 generates a potentially soluble isoform that lacks the transmembrane segment. LILRB4 is expressed on dendritic cells(DC), monocytes, macrophages, and vascular endothelial cells(EC). Ligation of LILRB4 triggers ITIM-mediated inhibition of cellactivating signaling, leading to enhanced immune tolerance and reduced allogeneic graft rejection. Soluble LILRB4 induces the differentiation of CD8+ T suppressor cells(Ts) that can inhibit the effector functions of CD4+ Th cells and CD8+ CTL. In turn, CD8+ Ts cells induce LILRB4 up-regulation and a tolerogenic phenotype in monocytes, DC, and EC.
Endotoxin<1.0 EU/ug determined by the LAL method
Product Declaration该产品仅供科研使用,不可直接用于人体或注射。
FAQ
  • 蛋白溶解后浓度偏低,如何调整?:低速离心:12,000 rpm, 5分钟,去除不溶物。缓冲液置换:使用超滤离心管(如10 kDa截留分子量)浓缩。

  • 如何提高重组蛋白的可溶性表达?:可优化表达条件(如降低诱导温度、调整IPTG浓度)、使用促溶标签(如SUMO、GST)、共表达分子伴侣,或尝试不同宿主系统(如哺乳动物细胞或昆虫细胞)以提高可溶性蛋白产量。

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