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Article Abstract
The zinc finger protein is one of the proteins with finger-like domain. Some of them are transcription factors which play important role in plant growth and plant resistance to abiotic stresses. In this paper, a novel C2H2-type zinc finger protein gene SCTF-1 (GenBank accession number JQ692081) was isolated from soybean (Glycine max (L.) Merr.) This gene has a 699 bp ORF (open reading frame) with no intron and encodes a 24.9 kDa protein with 233 amino acids. Its isoelectric point (pI) is 8.33. The SCTF-1 protein contains two typical C2H2-type zinc finger domains. Both of them have highly conserved amino acid sequence-QALGGH which is a particular characteristic of plant. Transient expression of the GFP-SCTF-1 protein in onion epidermal cell showed that SCTF-1 was localized in cell nuclei. RT-PCR results showed that SCTF-1 gene was expressed with high levels in flowers and leaves in soybean, but low in roots and stems. The expression of SCTF-1 gene was strongly induced by low temperature in the soybean seedlings. Overexpression of SCTF-1 enhanced cold tolerance of transgenic tobacco (Nicotiana tabacum L.) compared to the control.
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| http://dx.doi.org/10.3724/sp.j.1005.2012.00749 | DOI Listing |
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