Recently it has been suggested that glyceraldehyde-3-phosphate dehydrogenase (GAPDH) play a role in nuclear tRNA export. As the structural basis of binding of GAPDH to tRNA is as yet unknown, we have employed Raman and CD spectroscopy as probes of the solution structures of GAPDH from rabbit and tRNA(Phe) from brewers yeast. Additionally, we have obtained the Raman and CD spectra of GAPDH when bound to tRNA(Phe). In the complex we find the following results: (a) The most part of the tRNA(Phe) structure is conserved, but with a slight perturbation toward a B-like form. (b) No significant changes in the secondary structure of the protein upon binding are observed. (c) The surface enhanced Raman spectra are consistent with a GAPDH-tRNA(Phe) complex molecular model that involves the insertion of TRNA(Phe) into the GAPDH tetramer groove containing the R and P axes. (d) The specific interactions that occur between GAPDH and the tRNA(Phe) involve, mainly, stacking between nucleobases and aromatic amino-acid residues, and ionic interactions of basic amino-acid residues with phosphate groups of the ribose-phosphate backbone. The above stacking interactions are also supported by the significant relatedness that we have found between an amino-acid sequence (residues 303-308) of GAPDH and RNP2 binding motifs of some RNA binding proteins.
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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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