Human

Human Kidney Gene DataBase

Name apolipoprotein A-I
Symbol APOA1
Aliases
Gene Product
  • apolipoprotein A-I precursor
Category
UniGene Hs.93194 
Reference Sequence
mRNA: NM_000039 Protein: NP_000030
OMIM and SNP
OMIM: 107680 SNP: NCBI SNP
Locus
LocusLink: 335Chromosome: 11Cytoband: 11q23-q24 UCSC Genome Map Eesembl Genome Map
SummaryAPOA1 promotes cholesterol efflux from tissues to the liver for excretion. Apolipoprotein A-I is the major protein component of high density lipoprotein (HDL) in the plasma. Synthesized in the liver and small intestine, it consists of two identical chains of 77 amino acids; an 18-amino acid signal peptide is removed co-translationally and a 6-amino acid propeptide is cleaved post-translationally. Variation in the latter step, in addition to modifications leading to so-called isoforms, is responsible for some of the polymorphism observed. APOA1 is a cofactor for lecithin cholesterolacyltransferase (LCAT) which is responsible for the formation of most plasma cholesteryl esters. The APOA1, APOC3 and APOA4 genes are closely linked in both rat and human genomes. The A-I and A-IV genes are transcribed from the same strand, while the C-III gene is transcribed convergently in relation to A-I. Defects in the apolipoprotein A-1 gene are associated with HDL deficiency and Tangier disease.
Gene Ontology
Expression
EST (557 ESTs, 58 libraries)
Tissue Breadth ? CPM ?
brainBreadth of expression: 2 out of  759 libraries express this gene (0.26%)Average CPM:0.20
colonBreadth of expression: 2 out of  930 libraries express this gene (0.22%)Average CPM:2.24
germ cellBreadth of expression: 3 out of  6 libraries express this gene (50.00%)Average CPM:0.20
heartBreadth of expression: 1 out of  26 libraries express this gene (3.85%)Average CPM:0.15
liverBreadth of expression: 16 out of  65 libraries express this gene (24.62%)Average CPM:13.01
lungBreadth of expression: 2 out of  334 libraries express this gene (0.60%)Average CPM:1.48
muscleBreadth of expression: 1 out of  83 libraries express this gene (1.20%)Average CPM:0.17
ovaryBreadth of expression: 3 out of  170 libraries express this gene (1.76%)Average CPM:0.74
pancreasBreadth of expression: 1 out of  20 libraries express this gene (5.00%)Average CPM:1.60
placentaBreadth of expression: 4 out of  358 libraries express this gene (1.12%)Average CPM:1.18
spleenBreadth of expression: 3 out of  15 libraries express this gene (20.00%)Average CPM:8.72
testisBreadth of expression: 4 out of  180 libraries express this gene (2.22%)Average CPM:0.28
thymusBreadth of expression: 1 out of  23 libraries express this gene (4.35%)Average CPM:0.57
uncharacterized tissueBreadth of expression: 13 out of  1739 libraries express this gene (0.75%)Average CPM:0.92
whole bodyBreadth of expression: 2 out of  12 libraries express this gene (16.67%)Average CPM:0.15
SAGE (1264119 tags, 24 libraries)
Tissue Breadth ? CPM ?
brainBreadth of expression: 1 out of  30 libraries express this gene (3.33%)Average CPM:18.99
colonBreadth of expression: 1 out of  8 libraries express this gene (12.50%)Average CPM:535.13
heartBreadth of expression: 1 out of  1 libraries express this gene (100.00%)Average CPM:82.98
kidneyBreadth of expression: 1 out of  3 libraries express this gene (33.33%)Average CPM:22.97
liverBreadth of expression: 1 out of  1 libraries express this gene (100.00%)Average CPM:2677.20
mammary glandBreadth of expression: 3 out of  20 libraries express this gene (15.00%)Average CPM:44.36
ovaryBreadth of expression: 1 out of  10 libraries express this gene (10.00%)Average CPM:41.19
prostateBreadth of expression: 1 out of  14 libraries express this gene (7.14%)Average CPM:30.60
skinBreadth of expression: 1 out of  7 libraries express this gene (14.29%)Average CPM:86.48
stomachBreadth of expression: 2 out of  4 libraries express this gene (50.00%)Average CPM:28.87
uncharacterized tissueBreadth of expression: 6 out of  20 libraries express this gene (30.00%)Average CPM:162.72
vascularBreadth of expression: 1 out of  3 libraries express this gene (33.33%)Average CPM:13.13
EvidenceMutation in Renal Amyloidosis

Other key publications related to this gene


© 2004, KGDB, All Rights Reserved.
Department of Urology
University of California, San Francisco