- Family of the major cold-shock protein, CspA (CS7.4), of Escherichia coli, whose members show a high sequence similarity with the eukaryotic Y-box binding proteins. Lee, S.J., Xie, A., Jiang, W., Etchegaray, J.P., Jones, P.G., Inouye, M. Mol. Microbiol. (1994)