R&D Systems代理AF2255 Mouse LDL R Affinity Purified Polyclonal Ab (100 UG)-试剂-金山科研平台

R&D Systems代理AF2255 Mouse LDL R Affinity Purified Polyclonal Ab (100 UG)

2025-06-27

货号：AF2255

品牌：R&D Systems

规格：100ug

目录价：￥5120.00

市场价格：￥4096.00

会员价格：￥4096.00

到货时间：3~4周

金山科研平台，产品价格货期咨询微信：jinshanbio Molecule Information: LDL R Long Name: Low Density Lipoprotein Receptor Entrez Gene IDs: 3949 (Human); 16835 (Mouse); 300438 (Rat) Background: LDL R

View LDL Receptor IHC images. The low density lipoprotein receptor (LDLR) is the founding member of the LDLR family of scavenger receptors. This family contains transmembrane molecules that are characterized by the presence of EGF repeats, complement-like repeats, and YWTD motifs that form beta-propellers. Although members of the family were originally thought to be endocytic receptors, it is now clear that some members interact with adjacent cell-surface molecules, expanding their range of activities. Human LDLR is synthesized as an 860 amino acid (aa) precursor that contains a 21 aa signal sequence, a 767 aa extracellular region, a 22 aa transmembrane segment and a 50 aa cytoplasmic tail. The extracellular region is complex. It consists of seven N-terminal complement-like cysteine-rich repeats that bind ligand. Cysteine residues in this region participate in intrachain disulfide bonds. This region is followed by three EGF-like repeats with a beta-propeller YWTD containing motif. The EGF-like repeats are responsible for ligand bonding and dissociation. Finally, there is a 50 aa membrane proximal Ser/Thr-rich region that serves as a carbohydrate attachment point. There is extensive O-linked and modest N-linked glycosylation. Thus the receptor's predicted molecular weight of 93 kDa is increased to a native molecular weight of 120 - 160 kDa. Within the 50 aa cytoplasmic tail, there is an NPXY motif that links the receptor to clathrin pits. The extracellular region of human LDLR is 51% aa identical to the extracellular region of human VLDLR, and 79% aa identical to the extracellular region of mouse LDL R. LDLR is constitutively expressed and binds apoB of LDL and apoE of VLDL. It is responsible for clearing 70% of plasma LDL in liver. Mutations in the LDLR gene cause the autosomal dominant disorder, familial hypercholesterolemia.

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