{"rfam": {"acc": "RF00618", "id": "U4atac", "description": "U4atac minor spliceosomal RNA", "comment": "U4atac is an essential component of the minor U12-type spliceosome complex which is required for removal of the rarer class of eukaryotic introns (AT-AC, U12-type) [1]. U4atac snRNA is proposed to form a base-paired complex with another spliceosomal RNA U6atac via two stem loop regions. These interacting stem loops have been shown to be required for in vivo splicing [2]. U4atac also contains an 3' Sm protein binding site which has been shown to be essential for splicing activity [2]. U4atac is the functional analog of U4 (Rfam:RF00015) in the major U2-type spliceosomal complex [2]. The drosophila U4atac snRNA has an additional predicted 3' stem loop terminal to the Sm binding site [3] which is not included in this model.", "curation": {"author": "Daub J, Gardner PP, Marz M", "seed_source": "PMID:19030770; Gardner PP", "num_seed": 61, "num_full": 1648, "num_species": 818, "type": "Gene; snRNA; splicing;", "structure_source": "Published; PMID:11911359"}, "cm": {"build_command": "cmbuild -F CM SEED", "calibrate_command": "cmcalibrate --mpi CM", "search_command": "cmsearch --cpu 4 --verbose --nohmmonly -T 27.00 -Z 2958934 CM SEQDB", "cutoffs": {"gathering": 53.0, "trusted": 53.0, "noise": 52.9}}, "release": {"date": "2026-01-16", "number": "15.1"}, "clan": {"acc": "CL00007", "id": "U4"}}}