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| Content Provider | Springer Nature Link |
|---|---|
| Author | Wang, Qian Wu, Xiaobing Yan, Peng Zheng, Shuai |
| Copyright Year | 2008 |
| Abstract | The variation of the exon 2 of the major histo-compatibility complex (MHC) class II gene DRB locus in three feline species were examined on clouded leopard (Neofelis nebulosa), leopard (Panthera pardus) and Amur tiger (Panthera tigris altaica). A pair of degenerated primers was used to amplify DRB locus covering almost the whole exon 2. Exon 2 encodes the β1 domain which is the most variable fragments of the MHC class II molecule. Single-strand conformational polymorphism (SSCP) analysis was applied to detect different MHC class II DRB haplotypes. Fifteen recombinant plasmids for each individual were screened out, isolated, purified and sequenced finally. Totally eight distinct haplotypes of exon 2 were obtained in four individuals. Within 237 bp nucleotide sequences from four samples, 30 variable positions were found, and 21 putative peptide-binding positions were disclosed in 79 amino acid residues. The ratio of nonsynonymous substitutions (d $_{ N }$) was much higher than that of synonymous substitutions (d $_{ S }$), which indicated that balancing selection probably maintain the variation of exon 2. MEGA neighbor joining (NJ) and PAUP maximum parsimony (MP) methods were used to reconstruct phylogenetic trees among species, respectively. Results displayed a more close relationship between leopard and tiger; however, clouded leopard has a comparatively distant relationship form the other two. |
| Starting Page | 55 |
| Ending Page | 62 |
| Page Count | 8 |
| File Format | |
| ISSN | 16733509 |
| Journal | Frontiers in Biology |
| Volume Number | 3 |
| Issue Number | 1 |
| e-ISSN | 16733622 |
| Language | English |
| Publisher | Higher Education Press |
| Publisher Date | 2008-01-01 |
| Publisher Institution | Chinese Universities |
| Publisher Place | Beijing |
| Access Restriction | Subscribed |
| Subject Keyword | major histocompatibility complex (MHC) DRB locus exon 2 feline variability Life Sciences |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ecology Genetics Ecology, Evolution, Behavior and Systematics Biotechnology |
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