《英文msh詞典》Hook,AT
[入口詞] Hook,AT
[主題詞] AT-Hook Motifs
[英文釋義] DNA-binding motifs,first described in one of the HMGA PROTEINS,HMG-I(Y). They consist of positively charged sequences of nine amino acids centered on the invariant tripeptide glycine-arginine-proline. They act to fasten the protein to an AT RICH SEQUENCE in the DNA.