Peroxisomal targeting signals (PTS), including PTS1 and PTS2, were proposed to play an important role in introducing proteins into the peroxisomal matrix. Pex7, the PTS2 receptor, is crucial to the import of PTS2 proteins. Based on the sequence of a fragment (F010) recovered from cDNA-AFLP, the full-length cDNA sequence was obtained by RACE and the contig in cotton ESTs, and the coding sequence was further cloned. The GhPex7 cDNA, 1314 bp in length, contained 5 non-coding (77 bp) upstream, 3 complete downstream with polyA signal tail and ORF of 954 bp, which coded for a deduced protein of 317 amino acids. The deduced protein had a predicted MW 35.57 kDa and a pI of 5.603. Homology analysis demonstrated that GhPex7 protein contained three highly conserved domains and three G-bata domains of WD-40 proteins family. The sequence of nucleotides and amino acids shared 83% and 76% identity with known Arabidopsis AtPex7, respectively, and its amino acid sequence shared from 28% to 42% identity with those of Drosophila melanogaster, Saccach, cerevisiae, Mus musculus and Homo sapiens. Southern blotting suggested that at least two copies of GhPex7 gene existed in Gossypium hirstum genome. By Northern blotting and RT-PCR analysis, expression of the GhPex7 was detected in roots, stems, leaves, buds, ovules and fibers, however it was stronger in leaves and stems than in other tissues. At the stage of cotton's ovules and fibers development, RT-PCR analysis also indicated that expression activity of GhPex7 in ovule at 0DPA mutant plant (no-fiber) was stronger than in wild type plant, its expression in wild type fiber at 23DPA was stronger than at 12, 16 DPA too.
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Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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Site | Modification | Modifier | Source | Reference |
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Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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