Abstract:

The mitochondrial tRNApro and tRNAthr gene of altogether 25 individuals in 6 breeds of Chinese goose and 2 breeds of domestic Europe goose were extractioned and sequenced. The results showed this tRNApro and tRNAthr gene sequence contained 69bp and 68bp respectively. Sequence and structure analysis of mitochondrial tRNApro and tRNAthr gene in domestic goose breeds first were reported by way of study of goose mitochondrial genomic.sequences and the cloverleaf structure of tRNApro and tRNAthr gene in domestic goose breeds was described and analysed ,and too was compared between three domestic goose breeds as well as between Anseriformes (Anser cygnoides )and Galliformes （Gallus gallus domesticus，Genbank accession number NC001323）in the paper. The results indicated as follow:The goose breeds tRNApro and tRNAthr gene both have norm cloverleaf secondary structures;The amino acid arm and anticodon loop of cloverleaf structure of tRNApro and tRNAthr gene is very conservative among Anser albifrons and Anser anser and Anser cygnoides. The gene sequences sequenced sequences in this study were deposited in GenBank under accession numbers from AY427800～AY427805 and AY427812～AY427814。

Key words: tRNA^thrgene;tRNA^progene, cloverleaf stucture