ArticleProtein science : a publication of the Protein Society2005
Understanding the relationship between the primary structure of proteins and its propensity to be soluble on overexpression in Escherichia coli.
Article in Protein science : a publication of the Protein Society, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 67 papers.
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67 citing papers in PubMed, 173 citations in OpenAlex.
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7 more citing papers are in PubMed but not listed here.
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2 authors at 1 institution in 1 country.
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Abstract
Solubility of proteins on overexpression in Escherichia coli is a manifestation of the net effect of several sequence-dependent and sequence-independent factors. This study aims to delineate the relationship between the primary structure and solubility on overexpression. The amino acid sequences of proteins reported to be soluble or to form inclusion bodies on overexpression in E. coli under normal growth conditions were analyzed. The results show a positive correlation between thermostability and solubility of proteins, and an inverse correlation between the in vivo half-life of proteins and solubility. The amino acid (Asn, Thr, Tyr) composition and the tripeptide frequency of the protein were also found to influence its solubility on overexpression. The amino acids that were seen to be present in a comparatively higher frequency in inclusion body-forming proteins have a higher sheet propensity, whereas those that are seen more in soluble proteins have a higher helix propensity; this is indicative of a possible correlation between sheet propensity and inclusion body formation. Thus, the present analysis shows that thermostability, in vivo half-life, Asn, Thr, and Tyr content, and tripeptide composition of a protein are correlated to the propensity of a protein to be soluble on overexpression in E. coli. The precise mechanism by which these properties affect the solubility status of the overexpressed protein remains to be understood.
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