It includes the complete first exon(1~61?bp),first intron(62~703?bp) and partial sequence of exon 2(704~732?bp) in the 732 base pairs of FSHβ gene sequence,and the content of A+T(66.12%) is higher than G+C(33.88%).
The lengthes of the first intron and the second intron were 1 833 bp and 2 018 bp respectively. The full length of Mongolian horse MSTN gene was 4 979 bp and firstly submitted to Genbank.
Sanhe horse, Wuzhumuqin horseand Xinihe horse lay in a same evolution branch, it was different from other branches of horse. 7、The polymorphisms of PCR-SSCP existed only in the fifth exon, but not in the 5'flanking region, first intron, and second exon.
7、PCR-SSCP 分析结果表明,在所检测的 5'端侧翼区、第一内含子、第二外显子和第五外显子四个位点中,仅第五外显子检测到多态,该多态位点由 A 和 B 两种等位基因控制。
The porcine growth hormone cDNA with first intron was constructed in our lab. In order to learn the effect of the first intron on gene expression,the expression vector of pGHcDNA with first intron(pGH cDNAin)under the control of CMV prompter was constructed. By transient expression mediated with DEAEDextran in COS7 cells and detection with PP95 biological method,the pGH cDNAin could be secretary expressed in eucaryotic cells,and expressed pGH showed biological activity.
The lengthes of the first intron and the second intron were 1 833 bp and 2 018 bp respectively. The full length of Mongolian horse MSTN gene was 4 979 bp and firstly submitted to Genbank.
The porcine growth hormone cDNA with first intron was constructed in our lab. In order to learn the effect of the first intron on gene expression,the expression vector of pGHcDNA with first intron(pGH cDNAin)under the control of CMV prompter was constructed. By transient expression mediated with DEAEDextran in COS7 cells and detection with PP95 biological method,the pGH cDNAin could be secretary expressed in eucaryotic cells,and expressed pGH showed biological activity.
Bioinformatic analysis indicated that putative promoter sequence of the cloned Xinong Saanen Dairy Goat β-casein 5' flanking sequence shared 96%~98% homology with other goat β-casein gene promoters. Xinong Saanen Dairy Goat β-casein 5' flanking sequence region contained promoter sequences and putative recognition sites for several transcriptional factors, including HOXF, Oct1, AP1, CEBP, STAT, NFKB, GR, ER, PR, ETS and the intron 1, exon 1 and exon 2 of the goat β-casein gene.
The results of PCR-SSCP analysis indicate that there is polymorphism only in 5′flanking region site among 4 sites which are 5′flanking region, intron 1, exon 2 and exon 5. As the result, there are mutations in two base sites of horse GH gene sequence: T replaced C at 1719 site, G replaced A at 1743 site.
3、PCR-SSCP 分析结果表明,在所检测的 5′端侧翼区、第一内含子、第二外显子和第五外显子四个位点中,仅第五外显子检测到多态,该多态位点由 A 和 B 两种等位基因控制。 GH 基因第 1719 处一个 T→C 的突变和 1743 处 G→A 的突变,导致等位基因 B变为等位基因 A。
4. A new mutation site of intron 1, T→ C translation, was detected. The mutation maybe affects the GH expression and decreases the later daily weight gain.
The results showed:The all sequence of Mongolian horse MSTN gene was cloned and sequenced and submitted in GenBank (accession AY840554). The result showed: the all sequence was 4979bp including 3 exons and 2 introns, the size of the exons were: 373bp,374bp,381bp; the size of the introns were:1833bp and 2018bp.
In order to construct oviduct-specific expression vectors, we cut thesequence of 5'-flanking region of chiken ovalbumin promoter, whichcontains the 5'-f1anking sequence and the first extron and the sequenceencoding first l40 amino acids.
And then the present study selected MSTN as a candidate gene to identify any difference in 2512 bp fragment included one intron and three extrons of MSTN among Wushen, Wuzhumuqin, Xinihe, Sanhe, Thorougnbred and Short Horse by PCR-SSCP, PCR-RFLP.
As shown by nitrocellulose filtration assays with RNA fragments transcribed from various regions of the human ribosomal protein (rp) S26 gene, proteins of the 40S ribosome subunit bind to the first intron of the rpS26 pre-mRNA.
Small-subunit proteins did not affect the efficiency of in vitro splicing of a pre-mRNA fragment corresponding to the first intron, second exon, second intron, and a part of the third exon of the rpS26 gene.
Immunoassays with specific antibodies showed that rpS26 contained in the nuclear extract of HeLa cells binds to the first intron of its pre-mRNA and, less efficiently, to its mRNA.
As shown by nitrocellulose filtration assays with RNA fragments transcribed from various regions of the human ribosomal protein (rp) S26 gene, proteins of the 40S ribosome subunit bind to the first intron of the rpS26 pre-mRNA.
Small-subunit proteins did not affect the efficiency of in vitro splicing of a pre-mRNA fragment corresponding to the first intron, second exon, second intron, and a part of the third exon of the rpS26 gene.
Immunoassays with specific antibodies showed that rpS26 contained in the nuclear extract of HeLa cells binds to the first intron of its pre-mRNA and, less efficiently, to its mRNA.
Male-specific DNA-protein complexes were revealed with labeled oligonucleotides corresponding to fragments +1150/+1449, +1358/+1449, +1397/+1449, and +1417/+1449 of intron 1 of the Ste1 gene.
RET exons 8, 10, 11, 13, 14, 15, and 16 and intron 1 along with the GFRA1 5'-UTR were screened by PCR and subsequent direct sequencing or RFLP analysis.