A minisatellite polymorphism in intron III of the barramundi (Lates calcarifer) growth hormone gene
This paper describes the detection of a polymorphism within the growth hormone (GH) gene of the fish barramundi (Lates calcarifer). PCR amplification of barramundi genomic DNA generated three different sized products: A, 409 bp; B, 478 bp; and H, 520 bp. Each barramundi isolate displayed one of four...
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Published in | Genome Vol. 39; no. 5; p. 934 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Canada
01.10.1996
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Abstract | This paper describes the detection of a polymorphism within the growth hormone (GH) gene of the fish barramundi (Lates calcarifer). PCR amplification of barramundi genomic DNA generated three different sized products: A, 409 bp; B, 478 bp; and H, 520 bp. Each barramundi isolate displayed one of four different types of profiles, which contained specific combinations of these PCR products. Sequence analysis confirmed that products A and B are different forms of the barramundi GH gene, and studies showed that product H was an artifact due to heteroduplex formation between the two smaller-sized molecules. The polymorphic nature of these PCR products was due to differences in the number of repeat monomers within the 5' end of the barramundi decaminisatellite, an AT-rich repetitive sequence that was identified within intron III of this gene. The barramundi decaminisatellite consisted of 24 or 28 10-nucleotide imperfect direct repeat monomers in a tandem array. The monomers were grouped into one of three different families and evidence for monomer homogenization by crossover fixation was presented. The barramundi decaminisatellite differed from previously reported AT- or GC-rich minisatellites, although a similar decaminisatellite has been identified in intron III of the tilapia GH gene. |
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AbstractList | This paper describes the detection of a polymorphism within the growth hormone (GH) gene of the fish barramundi (Lates calcarifer). PCR amplification of barramundi genomic DNA generated three different sized products: A, 409 bp; B, 478 bp; and H, 520 bp. Each barramundi isolate displayed one of four different types of profiles, which contained specific combinations of these PCR products. Sequence analysis confirmed that products A and B are different forms of the barramundi GH gene, and studies showed that product H was an artifact due to heteroduplex formation between the two smaller-sized molecules. The polymorphic nature of these PCR products was due to differences in the number of repeat monomers within the 5' end of the barramundi decaminisatellite, an AT-rich repetitive sequence that was identified within intron III of this gene. The barramundi decaminisatellite consisted of 24 or 28 10-nucleotide imperfect direct repeat monomers in a tandem array. The monomers were grouped into one of three different families and evidence for monomer homogenization by crossover fixation was presented. The barramundi decaminisatellite differed from previously reported AT- or GC-rich minisatellites, although a similar decaminisatellite has been identified in intron III of the tilapia GH gene. |
Author | Epping, R J Yowe, D L |
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BackLink | https://www.ncbi.nlm.nih.gov/pubmed/8890520$$D View this record in MEDLINE/PubMed |
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CitedBy_id | crossref_primary_10_1016_j_aquaculture_2010_10_006 crossref_primary_10_1016_j_ygcen_2005_09_023 crossref_primary_10_1111_raq_12764 crossref_primary_10_5657_fas_2003_6_4_180 crossref_primary_10_1111_j_1444_2906_2005_00991_x crossref_primary_10_1139_g00_051 crossref_primary_10_1111_jai_12428 |
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Snippet | This paper describes the detection of a polymorphism within the growth hormone (GH) gene of the fish barramundi (Lates calcarifer). PCR amplification of... |
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SubjectTerms | Animals Base Sequence Fishes - genetics Genes Growth Hormone - genetics Introns Minisatellite Repeats Molecular Sequence Data Polymerase Chain Reaction Sequence Alignment |
Title | A minisatellite polymorphism in intron III of the barramundi (Lates calcarifer) growth hormone gene |
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