| Primary Identifier | IPR040859 | Type | Domain |
| Short Name | Midline-1_COS |
| description | This entry represents the COS domain found in the C-I subfamily of the tripartite motif (TRIM) family of E3 ubiquitin ligases.The C-1 subfamily includes MID1 (TRIM18), MID2 (TRIM1), TRIM9, TNL (TRIM67), TRIM36 and TRIFIC (TRIM46) [, , ]. The C-I subfamily contains C-terminal FNIII and B30.2 domains which are associated with microtubules [, ]. C-I subfamily members also contain a relatively conserved region of approximately 60 amino acids, termed the C-terminal subgroup One Signature (COS) domain []. The human Midline-1 (MID1) COS domain has a helix-loop-helix structure in which the N- and C-terminal ends are in close proximity []. Deletion of the human MID1 COS domain does not affect MID1 dimerisation but disrupts localisation to the microtubules [].The COS domain is also observed within the TRIM C-II subgroup, which consists of the MURF1-3 proteins that do not contain the FNIII and B30.2domains. MUF1-3 proteins are also associated with microtubules []. |
