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Suppression of receptor-binding domain of LRP LDLR is due to overexpression of LRPAP (the protein product of LRPAP gene). [13] LRP gives protection across LDL by LRPAP and its downregulation may be subjected for an elevation of LDL and Ab-related neuronal toxicity as LRP supports in binding of ligand and internalization of LRP ligands like apo ...
This protein belongs to the LDLR family and is made up of a number of functionally distinct domains, including 3 EGF-like domains, 7 LDL-R class A domains, and 6 LDL-R class B repeats. [14] The N-terminal domain of the LDL receptor, which is responsible for ligand binding, is composed of seven sequence repeats (~50% identical).
[8] [10] [11] As a member of the LDLR family, LRP1 contains cysteine-rich complement-type repeats, EGF (gene) repeats, β-propeller domains, a transmembrane domain, and a cytoplasmic domain. [9] The extracellular domain of LRP1 is the alpha-chain, which comprises four ligand -binding domains (numbered I-IV) containing two, eight, ten, and ...
The direct Coombs test is used to detect antibodies or complement proteins attached to the surface of red blood cells. To perform the test, a blood sample is taken and the red blood cells are washed (removing the patient's plasma and unbound antibodies from the red blood cells) and then incubated with anti-human globulin ("Coombs reagent").
LDLR pathway Schematic representation of the LDL receptor protein. The LDL receptor gene is located on the short arm of chromosome 19 (19p13.1-13.3). [9] It comprises 18 exons and spans 45 kb, and the protein gene product contains 839 amino acids in mature form. A single abnormal copy (heterozygote) of FH causes cardiovascular disease by the ...
A clinically significant antibody is an antibody that is capable of causing in vitro hemolysis or a decreased survival of transfused donor red blood cells. [7] Antibodies to high frequency antigens can be assessed for clinical significance using the monocyte monolayer assay.
A single antibody molecule has two antigen receptors and therefore contains twelve CDRs total. There are three CDR loops per variable domain in antibodies. Sixty CDRs can be found on a pentameric IgM molecule, which is composed of five antibodies and has increased avidity as a result of the collective affinity of all antigen-binding sites combined.
Normal SRE-1 sequences, like those found in LDLR, are characterized by two repeats of the codon CAC separated by two intervening C nucleotides (5’-CACCCCAC-3’). The sterol regulatory element-binding protein -1 (SREBP-1), a transcription factor , targets the CAC repeats of SRE-1 to regulate the protein’s transcription.
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