RNA-binding GUCT domain found in plant DEAD-box ATP-dependent RNA helicase 7 (RH7) and similar proteins
This subfamily corresponds to the Gu C-terminal (GUCT) domain of RH7 and similar proteins. RH7, also termed plant RNA helicase 75 (PRH75), is a new nucleus-localized member of the DEAD-box protein family from higher plants. It displays a weak ATPase activity which is barely stimulated by RNA ligands. RH7 contains an N-terminal KDES domain rich in lysine, glutamic acid, aspartic acid, and serine residues, seven highly conserved helicase motifs in the central region, a GUCT domain, and a C-terminal GYR domain harboring a large number of glycine residues interrupted by either arginines or tyrosines. RH7 is RNA specific and harbors two possible RNA-binding motifs, the helicase motif VI (HRIGRTGR) and the C-terminal glycine-rich GYR domain.
Jiyao W et al.(2023). "The conserved domain database in 2023.",