BF, Dept. of Animal Science, Ljubljana (BFZOO)
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Polymorphisms in the kappa casein (CSN3) gene in horse and comparative analysis of its promoter and coding regionHobor, Sebastijan ; Kunej, Tanja, biologinja ; Dovč, Peter, 1958-The major parts of the coding region and promoter of the equine kappa casein (CSN3) gene were sequenced and compared among several species. Four SNPs were identified in the CSN3 gene: two in exon 1 ... and two in exon 4. The SNPs were genotyped in six Slovenian horse breeds using RFLP and two different PCR-based methods. The highest variation in genotype frequencies was found in the Slovenian cold-blood breed. The SNPs in exon 4 may cause a change in the amino acid sequences and may alter chemical/functional properties of the protein. Using horse-specific primers, we obtained 400 bp of exon 4 sequence from zebra and donkey. Two SNPs within the zebra exon 4 sequence were discovered: both presumably caused amino acid substitutions. Within the equine promoter sequence, 15 SNPs were found and 12 of them could be involved in the gain/loss of potential transcription factor (TF) binding sites. Using a comparative genomics approach, we obtained 1482 bp of the promoter sequence from zebra and donkey. Sequence alignment revealed highly conserved blocks of promoter sequence among nine species (sheep, goat, cow, zebra, donkey, horse, chimp, macaque and human) and clustered these species in three distinct groups. Consensus binding sites for TFs STAT5, C/EBP, NF1 and STAT6, previously demonstrated to be associated with expression, were located within conserved regions. Four promoter regions were tested for specific binding of TFs using electrophoretic mobility shift assays. Predicted binding sites for C/EBP and NF1 were confirmed and one conserved region was specifically detected by a yet-uncharacterized TF.Source: Animal genetics. - ISSN 0268-9146 (Vol. 39, no. 5, 2008, str. 520-530)Type of material - article, component partPublish date - 2008Language - englishCOBISS.SI-ID - 2344328
Author
Hobor, Sebastijan |
Kunej, Tanja, biologinja |
Dovč, Peter, 1958-
Topics
konji |
molekularna genetika |
kapa kazein |
geni |
CSN 3 |
polimorfizem
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Database name | Field | Year |
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Hobor, Sebastijan | 25515 |
Kunej, Tanja, biologinja | 16361 |
Dovč, Peter, 1958- | 05098 |
Source: Personal bibliographies
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