The PreA4(695) precursor protein of Alzheimer's disease A4 amyloid is encoded by 16 exons.
Alzheimer's disease (AD) is characterized by the cerebral deposition of fibrillar aggregates of the amyloid A4 protein. Complementary DNA's coding for the precursor of the amyloid A4 protein have been described. In order to identify the structure of the precursor gene relevant clones from several human genomic libraries were isolated. Sequence analysis of the various clones revealed 16 exons to encode the 695 residue precursor protein (PreA4(695] of Alzheimer's disease amyloid A4 protein. The DNA sequence coding for the amyloid A4 protein is interrupted by an intron. This finding supports the idea that amyloid A4 protein arises by incomplete proteolysis of a larger precursor, and not by aberrant splicing.
Lemaire
H G
HG
Institute für Genetik, Universität Köln, FRG.
Salbaum
J M
JM
Multhaup
G
G
Kang
J
J
Bayney
R M
RM
Unterbeck
A
A
Beyreuther
K
K
Müller-Hill
B
B
D000544:Alzheimer Disease / Q000235:genetics*; D000595:Amino Acid Sequence; D001483:Base Sequence; D003001:Cloning, Molecular; D015252:Deoxyribonucleases, Type II Site-Specific; D005091:Exons; D005784:Gene Amplification; D006801:Humans; D007438:Introns; D008969:Molecular Sequence Data; D011498:Protein Precursors / Q000235:genetics* / Q000302:isolation & purification; D000685:Serum Amyloid A Protein / Q000235:genetics* / Q000302:isolation & purification
D011498:Protein Precursors; D000685:Serum Amyloid A Protein; D015252:Deoxyribonucleases, Type II Site-Specific; C027046:TCGA-specific type II deoxyribonucleases