Bovine αs2 -casein D is generated by exon VIII skipping
Bovine α s2 -casein D (CasD) differs from the common type A by the deletion of a stretch of 9 amino acids (aa) starting at a position not precisely known, either at aa 50, 51, or 52. The sequence of cloned PCR-amplified genomic DNA from three homozygous cows, two unrelated females carrying the CasD...
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Published in | Gene Vol. 128; no. 2; pp. 289 - 293 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Lausanne
Elsevier B.V
30.06.1993
Amsterdam Elsevier New York, NY |
Subjects | |
Online Access | Get full text |
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Summary: | Bovine
α
s2
-casein D (CasD) differs from the common type A by the deletion of a stretch of 9 amino acids (aa) starting at a position not precisely known, either at aa 50, 51, or 52. The sequence of cloned PCR-amplified genomic DNA from three homozygous cows, two unrelated females carrying the
CasD allele and one carrying the
CasA allele, did not reveal any deletion and showed two identical nucleotide (nt) substitutions in the 1.7-kb region of both
CasD alleles encompassing codons 43–75 in the cDNA encoding
α
s2
-CasA. This strongly suggests that the deleted bovine
α
s2
-CasD arises from skipping the 27-nt exon, now identified as exon VIII, which encodes aa 51–59 of
α
s2
-CasA. The G→T transversion (allele A→D) affecting the last nt of exon VIII, i.e., the 5' consensus splicing site, might be responsible for the altered splicing of the primary transcript of
α
s2
-
CasD. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0378-1119 1879-0038 |
DOI: | 10.1016/0378-1119(93)90577-P |