DIM1_DICDI
ID DIM1_DICDI Reviewed; 314 AA.
AC Q54QK7;
DT 29-APR-2008, integrated into UniProtKB/Swiss-Prot.
DT 24-MAY-2005, sequence version 1.
DT 03-AUG-2022, entry version 100.
DE RecName: Full=Probable dimethyladenosine transferase;
DE EC=2.1.1.183 {ECO:0000250|UniProtKB:Q9UNQ2};
DE AltName: Full=DIM1 dimethyladenosine transferase 1 homolog;
DE AltName: Full=Probable 18S rRNA (adenine(1779)-N(6)/adenine(1780)-N(6))-dimethyltransferase;
DE AltName: Full=Probable 18S rRNA dimethylase;
DE AltName: Full=Probable S-adenosylmethionine-6-N',N'-adenosyl(rRNA) dimethyltransferase;
GN Name=dimt1; Synonyms=dimt1l; ORFNames=DDB_G0283789;
OS Dictyostelium discoideum (Slime mold).
OC Eukaryota; Amoebozoa; Evosea; Eumycetozoa; Dictyostelia; Dictyosteliales;
OC Dictyosteliaceae; Dictyostelium.
OX NCBI_TaxID=44689;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=AX4;
RX PubMed=15875012; DOI=10.1038/nature03481;
RA Eichinger L., Pachebat J.A., Gloeckner G., Rajandream M.A., Sucgang R.,
RA Berriman M., Song J., Olsen R., Szafranski K., Xu Q., Tunggal B.,
RA Kummerfeld S., Madera M., Konfortov B.A., Rivero F., Bankier A.T.,
RA Lehmann R., Hamlin N., Davies R., Gaudet P., Fey P., Pilcher K., Chen G.,
RA Saunders D., Sodergren E.J., Davis P., Kerhornou A., Nie X., Hall N.,
RA Anjard C., Hemphill L., Bason N., Farbrother P., Desany B., Just E.,
RA Morio T., Rost R., Churcher C.M., Cooper J., Haydock S., van Driessche N.,
RA Cronin A., Goodhead I., Muzny D.M., Mourier T., Pain A., Lu M., Harper D.,
RA Lindsay R., Hauser H., James K.D., Quiles M., Madan Babu M., Saito T.,
RA Buchrieser C., Wardroper A., Felder M., Thangavelu M., Johnson D.,
RA Knights A., Loulseged H., Mungall K.L., Oliver K., Price C., Quail M.A.,
RA Urushihara H., Hernandez J., Rabbinowitsch E., Steffen D., Sanders M.,
RA Ma J., Kohara Y., Sharp S., Simmonds M.N., Spiegler S., Tivey A.,
RA Sugano S., White B., Walker D., Woodward J.R., Winckler T., Tanaka Y.,
RA Shaulsky G., Schleicher M., Weinstock G.M., Rosenthal A., Cox E.C.,
RA Chisholm R.L., Gibbs R.A., Loomis W.F., Platzer M., Kay R.R.,
RA Williams J.G., Dear P.H., Noegel A.A., Barrell B.G., Kuspa A.;
RT "The genome of the social amoeba Dictyostelium discoideum.";
RL Nature 435:43-57(2005).
CC -!- FUNCTION: Specifically dimethylates two adjacent adenosines in the loop
CC of a conserved hairpin near the 3'-end of 18S rRNA in the 40S particle.
CC Involved in the pre-rRNA processing steps leading to small-subunit rRNA
CC production independently of its RNA-modifying catalytic activity.
CC {ECO:0000250|UniProtKB:Q9UNQ2}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=adenosine(1779)/adenosine(1780) in 18S rRNA + 4 S-adenosyl-L-
CC methionine = 4 H(+) + N(6)-dimethyladenosine(1779)/N(6)-
CC dimethyladenosine(1780) in 18S rRNA + 4 S-adenosyl-L-homocysteine;
CC Xref=Rhea:RHEA:42780, Rhea:RHEA-COMP:10234, Rhea:RHEA-COMP:10236,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:57856, ChEBI:CHEBI:59789,
CC ChEBI:CHEBI:74411, ChEBI:CHEBI:74493; EC=2.1.1.183;
CC Evidence={ECO:0000250|UniProtKB:Q9UNQ2};
CC -!- SUBCELLULAR LOCATION: Nucleus, nucleoplasm
CC {ECO:0000250|UniProtKB:Q9UNQ2}. Nucleus, nucleolus
CC {ECO:0000250|UniProtKB:Q9UNQ2}.
CC -!- SIMILARITY: Belongs to the class I-like SAM-binding methyltransferase
CC superfamily. rRNA adenine N(6)-methyltransferase family. {ECO:0000305}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; AAFI02000057; EAL65509.1; -; Genomic_DNA.
DR RefSeq; XP_638864.1; XM_633772.1.
DR AlphaFoldDB; Q54QK7; -.
DR SMR; Q54QK7; -.
DR STRING; 44689.DDB0266789; -.
DR PaxDb; Q54QK7; -.
DR EnsemblProtists; EAL65509; EAL65509; DDB_G0283789.
DR GeneID; 8624262; -.
DR KEGG; ddi:DDB_G0283789; -.
DR dictyBase; DDB_G0283789; dimt1l.
DR eggNOG; KOG0820; Eukaryota.
DR HOGENOM; CLU_041220_2_3_1; -.
DR InParanoid; Q54QK7; -.
DR OMA; KEEEPYF; -.
DR PhylomeDB; Q54QK7; -.
DR PRO; PR:Q54QK7; -.
DR Proteomes; UP000002195; Chromosome 4.
DR GO; GO:0005730; C:nucleolus; IEA:UniProtKB-SubCell.
DR GO; GO:0005654; C:nucleoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0052909; F:18S rRNA (adenine(1779)-N(6)/adenine(1780)-N(6))-dimethyltransferase activity; IEA:UniProtKB-EC.
DR GO; GO:0003723; F:RNA binding; IEA:UniProtKB-KW.
DR GO; GO:0000179; F:rRNA (adenine-N6,N6-)-dimethyltransferase activity; IBA:GO_Central.
DR GO; GO:0031167; P:rRNA methylation; IBA:GO_Central.
DR Gene3D; 3.40.50.150; -; 1.
DR HAMAP; MF_00607; 16SrRNA_methyltr_A; 1.
DR InterPro; IPR001737; KsgA/Erm.
DR InterPro; IPR020596; rRNA_Ade_Mease_Trfase_CS.
DR InterPro; IPR020598; rRNA_Ade_methylase_Trfase_N.
DR InterPro; IPR011530; rRNA_adenine_dimethylase.
DR InterPro; IPR029063; SAM-dependent_MTases_sf.
DR PANTHER; PTHR11727; PTHR11727; 1.
DR Pfam; PF00398; RrnaAD; 1.
DR SMART; SM00650; rADc; 1.
DR SUPFAM; SSF53335; SSF53335; 1.
DR TIGRFAMs; TIGR00755; ksgA; 1.
DR PROSITE; PS01131; RRNA_A_DIMETH; 1.
DR PROSITE; PS51689; SAM_RNA_A_N6_MT; 1.
PE 3: Inferred from homology;
KW Methyltransferase; Nucleus; Reference proteome; RNA-binding;
KW rRNA processing; S-adenosyl-L-methionine; Transferase.
FT CHAIN 1..314
FT /note="Probable dimethyladenosine transferase"
FT /id="PRO_0000331366"
FT BINDING 36
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000250"
FT BINDING 38
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000250"
FT BINDING 63
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000250"
FT BINDING 84
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000250"
FT BINDING 112
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000250"
FT BINDING 127
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000250"
SQ SEQUENCE 314 AA; 35341 MW; 6E926C32B37E381E CRC64;
MVKPVKIGVD AKVEKTKSAT AARHHEFQMN KSYGQHLLKN PLIIDAIVDK SQLKSTDTVL
EIGPGTGNLT MKLLENCKKV IAIEVDPRMA AELQKRVAAS PYAQHLQIIL GDFLKVDLPY
FDVCVANVPY QISSPLTFKL LAHRPIFRTA VLMFQKEFAL RLGAKPGDSL YCRLSVNTQL
LSKVTHLMKV GKNNFLPPPK VESAVVRIEP FNPPPPINFV EWDGLVKLCF SRKNKTLSGI
FRVSSVIETL NQNYKTYCAL EGKMNTDGSD EQMKELIIKT LTDNDFLDSR SSKLDINDFL
KLLNKFHETG IHFK
