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238055 Ensembl ENSG00000084674 ENSMUSG00000020609 UniProt P04114 E9Q414 RefSeq (mRNA) NM_000384 NM_009693 RefSeq (protein) NP_000375 NP_033823 Location (UCSC) Chr 2: 21 – 21.04 Mb Chr 12: 8.03 – 8.07 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Apolipoprotein B (ApoB) is a protein that in humans is encoded by the APOB gene. Its measurement is commonly used to detect risk of ...
ApoB is an integral apoprotein whereas the others are peripheral apoproteins. Apolipoprotein synthesis such as ApoA4 in hypothalamus involves in the integration of signals for regulation of food intake [ 5 ] which is regulated by vagal nerve and cholecystokinin .
Apolipoprotein B mRNA editing enzyme, catalytic polypeptide 1 also known as C->U-editing enzyme APOBEC-1 is a protein that in humans is encoded by the APOBEC1 gene. [ 5 ] This gene encodes a member of the APOBEC protein family and the cytidine deaminase enzyme family.
APOBEC3G (apolipoprotein B mRNA editing enzyme, catalytic subunit 3G) is a human enzyme encoded by the APOBEC3G gene that belongs to the APOBEC superfamily of proteins. [4] This family of proteins has been suggested to play an important role in innate anti-viral immunity. [5]
Chylomicron structure ApoA, ApoB, ApoC, ApoE (apolipoproteins); T (triacylglycerol); C (cholesterol); green (phospholipids). Chylomicrons transport lipids absorbed from the intestine to adipose, cardiac, and skeletal muscle tissue, where their triglyceride components are hydrolyzed by the activity of the lipoprotein lipase, allowing the released free fatty acids to be absorbed by the tissues.
Binding of ApoB requires repeats 2-7 while binding ApoE requires only repeat 5 (thought to be the ancestral repeat). Next to the ligand binding domain is an EGF precursor homology domain (EGFP domain). This shows approximately 30% homology with the EGF precursor gene. There are three "growth factor" repeats; A, B and C.
These enzymes, when misregulated, are a major source of mutation in numerous cancer types. [5] [6] [8] When the expression of APOBEC family proteins is triggered, accidental mutations in somatic cells can lead to the development of oncogenes, cells which have the potential to develop into a tumor.
The effect of C-to-U RNA editing on the human ApoB gene. The editing involves cytidine deaminase that deaminates a cytidine base into a uridine base. An example of C-to-U editing is with the apolipoprotein B gene in humans. Apo B100 is expressed in the liver and apo B48 is expressed in the intestines. In the intestines, the mRNA has a CAA ...
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