The KH domain occurs in a diverse set of RNA‐binding proteins that include the antiterminator NusA and is probably involved in binding to nucleic acid

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Abstract
New findings are presented for the ~ 50 residue KH motif, a domain recently discovered in RNA-binding proteins. The conserved sequence is ~ 10 residues larger than previously reported. Profile searches have revealed new members of this family, including two, E. coli NusA and human GAP-associated p62 phosphoprotein, for which RNA-binding data exists. A nus A homolog was detected in the RNA polymerase gene complex of six archaebacterial species and may encode an antiterminator. All KH-containing proteins are linked with RNA and the KH motif most probably functions as a nucleic acid binding domain.