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Aim. To gain more insights into properties of the human translation elongation factor eEF1Bγ and its interaction with partners we intended to produce the full-length protein and its truncated forms. Methods. cDNAs encoding truncated forms of eEF1Bγ were generated by PCR amplification with respective primers and cloned into vectors providing polyhistidine, glutathione S-transferase or maltose binding protein tags. The recombinant proteins were expressed in Escherichia coli and purified by affinity chromatography. An aggregation state of the proteins was analyzed by analytical gel filtration. Results. The expression, purification and storage conditions for the full-length recombinant His-eEF1Bγ were optimized. Several truncated forms of eEF1Bγ were also expressed and purified to homogeneity. Two short variants of C-terminal domain comprising amino acids 263–437 or 228–437 were obtained in monomeric state. Two short variants of N-terminal domain comprising amino acids 1–33 or 1–230, fused with glutathione S-transferase, were obtained and estimated to be dimers by gel filtration. The mutants of N-terminal domain comprising amino acids 1–93 or 1–165, fused with maltose binding protein, were obtained as soluble high molecular weight aggregates only. Conclusions. The purified recombinant His-eEF1Bγ and several truncated forms of the protein were obtained and characterized. These protein variants will be used for further studies on the protein-protein interaction.\u

biopolymers and cell

Structural dissection of human translation elongation factor 1B&amp;gamma; (eEF1B&amp;gamma;): expression of full-length protein and its truncated forms