Ras-associating (RA) domain found in Ras-association domain family members, RASSF7, RASSF8, RASSF9, and RASSF10
The RASSF family of proteins shares a conserved RalGDS/AF6 Ras association (RA) domain either in the C-terminus (RASSF1-6) or N-terminus (RASSF7-10). RASSF7-10 lacks a conserved SARAH (Salvador/RASSF/Hpo) motif adjacent to the RA domain that is found in members of the RASSF1-6 family. The structural differences between the C-terminus and N-terminus RASSF subgroups have led to the suggestion that they are two distinct families. RA domain has the beta-grasp ubiquitin-like (Ubl) fold with low sequence similarity to ubiquitin (Ub). Ras proteins are small GTPases that are involved in cellular signal transduction. The N-terminus RASSF proteins are potential Ras effectors that have been linked to key biological processes, including cell death, proliferation, microtubule stability, promoter methylation, vesicle trafficking and response to hypoxia.
Feature 1: key conserved lysine K48, 1 residue position
Conserved feature residue pattern:[KR]
Evidence:
Comment:K48/R (Ub numbering) is one of 7 lysines involved in chain linkage in ubiquitin (K6, K11, K27, K29, K33, K48, or K63, Ub numbering), the other 6 lysines are not conserved in this subfamily; may have other functions
Jiyao W et al.(2023). "The conserved domain database in 2023.",