Welcome to Acta Prataculturae Sinica ! Today is Share:

Acta Prataculturae Sinica ›› 2010, Vol. 19 ›› Issue (5): 1-8.

    Next Articles

Analysis of cloning and sequence characteristics of cDNA encoding the GBSS I gene from tubers of Solanum tuberosum

SHEN Bao-yun1,2, LIU Yu-hui1, ZHANG Jun-lian1,2, WANG Di1,2   

  1. 1.Gansu Key Laboratory of Crop Genetic &
    Germplasm Enhancement, Lanzhou 730070, China;

    2.Agronomic College of Gansu Agricultural University, Lanzhou 730070, China
  • Received:2009-09-14 Online:2010-05-25 Published:2010-10-20

Abstract: The cDNA clone encoding GBSSⅠwas obtained by extracting total RNA from tubers of Solanum tuberosum CV. Gannongshu NO.2 using an RNA isolation system, RT-PCR (reverse transcription-polymerase chain reaction), then measuring and analyzing the DNA sequence. The full-length of cDNA was 1 824 bp, which contained 607 amino acids and a termination codon: the homology was 99.78% compared with the original sequence (Accession Number X58453), but the homologies were very low compared with other families. The gene has the registration number EU403426 in GenBank. The protein function and structure of the GBSSⅠgene cDNA sequence were predicted and analyzed using related software of bioinformatics. The protein had three completely conserved domains as in other GBSS proteins of 15 plants and it had a number of important functional sites. It also had a tertiary structure similar to starch synthase of Agrobacterium, which suggests that the protein functioned in starch synthesis.

CLC Number: