A truncated species of apolipoprotein B (B67) in a kindred with familial hypobetalipoproteinemia.
A truncated species of apolipoprotein B (B67) in a kindred with familial hypobetalipoproteinemia.
复制标题
一种截短的载脂蛋白 B (B67),存在于家族性低β脂蛋白血症家族中。
DOI:
10.1172/jci115193
复制
发表时间:
1991
期刊:
影响因子:
--
通讯作者:
Young,SG
中科院分区:
文献类型:
--
作者:
Welty,FK;Hubl,ST;Pierotti,VR;Young,SG
We describe a kindred in which the proband and 6 of his 12 children have hypobetalipoproteinemia. The plasma lipoproteins of the affected subjects contained a unique species of apolipoprotein (apo) B, apo B67, in addition to the normal species, apo B100 and apo B48. The size of apo B67 and immunochemical studies with a panel of apo B-specific antibodies indicated that apo B67 was a truncated species of apo B that contained approximately the amino-terminal 3,000-3,100 amino acids of apo B100. Sequencing of genomic apo B clones revealed that affected family members were heterozygous for a mutant apo B allele containing a single nucleotide deletion in exon 26 (cDNA nucleotide 9327). This frameshift mutation is predicted to result in the synthesis of a truncated apo B containing 3,040 amino acids. Apo B67 is present in low levels in the plasma but is easily detectable within the very low density lipoprotein and low density lipoprotein fractions. Examination of the proband's immediate family revealed seven normolipidemic subjects and seven subjects with hypobetalipoproteinemia. In the affected subjects, the mean total and low density lipoprotein cholesterol levels were 120 and 42 mg/dl, respectively. A significantly higher mean high density lipoprotein cholesterol level was found in the affected subjects (75 vs. 55 mg/dl). We hypothesize that the elevated high density lipoprotein cholesterol levels in subjects heterozygous for the apo B67 mutation may be metabolically linked to the low levels of apo B-containing lipoproteins in their plasma.Images
登录
查看更多内容
DOI:
--
发表时间:
1983
期刊:
Arteriosclerosis
影响因子:
--
作者:
R. Milne;R. Theolis;R. Verdery;Y. Marcel
通讯作者:
Y. Marcel
DOI:
--
发表时间:
1987
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Young,SG;Peralta,FP;Dubois,BW;Curtiss,LK;Boyles,JK;Witztum,JL
通讯作者:
Witztum,JL
影响因子:
15.9
作者:
S. Young;S. Bertics;L. Curtiss;J. Witztum
通讯作者:
J. Witztum
DOI:
10.1016/s0021-9258(19)47176-7
发表时间:
1989
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
R. Milne;R. Theolis;R. Maurice;R. Pease;P. Weech;E. Rassart;J. Fruchart;James F. Scott;Y. Marcel
通讯作者:
Y. Marcel
DOI:
10.1016/0005-2760(81)90253-8
发表时间:
1981-01-01
期刊:
BIOCHIMICA ET BIOPHYSICA ACTA
影响因子:
--
作者:
BLANCHE, PJ;GONG, EL;NICHOLS, AV
通讯作者:
NICHOLS, AV