ID   ERM_STRSA               Reviewed;         245 AA.
AC   P06573;
DT   01-JAN-1988, integrated into UniProtKB/Swiss-Prot.
DT   01-JAN-1988, sequence version 1.
DT   03-AUG-2022, entry version 88.
DE   RecName: Full=rRNA adenine N-6-methyltransferase;
DE            EC=2.1.1.184;
DE   AltName: Full=Macrolide-lincosamide-streptogramin B resistance protein;
OS   Streptococcus sanguinis.
OG   Plasmid pAM77.
OC   Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC   Streptococcus.
OX   NCBI_TaxID=1305;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=6406429; DOI=10.1128/jb.154.3.1252-1262.1983;
RA   Horinouchi S., Byeon W.-H., Weisblum B.;
RT   "A complex attenuator regulates inducible resistance to macrolides,
RT   lincosamides, and streptogramin type B antibiotics in Streptococcus
RT   sanguis.";
RL   J. Bacteriol. 154:1252-1262(1983).
CC   -!- FUNCTION: This protein produces a dimethylation of the adenine residue
CC       at position 2085 in 23S rRNA, resulting in reduced affinity between
CC       ribosomes and macrolide-lincosamide-streptogramin B antibiotics.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=adenosine(2085) in 23S rRNA + 2 S-adenosyl-L-methionine = 2
CC         H(+) + N(6)-dimethyladenosine(2085) in 23S rRNA + 2 S-adenosyl-L-
CC         homocysteine; Xref=Rhea:RHEA:42784, Rhea:RHEA-COMP:10237, Rhea:RHEA-
CC         COMP:10238, ChEBI:CHEBI:15378, ChEBI:CHEBI:57856, ChEBI:CHEBI:59789,
CC         ChEBI:CHEBI:74411, ChEBI:CHEBI:74493; EC=2.1.1.184;
CC   -!- SIMILARITY: Belongs to the class I-like SAM-binding methyltransferase
CC       superfamily. rRNA adenine N(6)-methyltransferase family.
CC       {ECO:0000255|PROSITE-ProRule:PRU01026}.
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DR   EMBL; K00551; AAA25527.1; -; Genomic_DNA.
DR   AlphaFoldDB; P06573; -.
DR   SMR; P06573; -.
DR   GO; GO:0052910; F:23S rRNA (adenine(2085)-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; IEA:InterPro.
DR   GO; GO:0046677; P:response to antibiotic; IEA:UniProtKB-KW.
DR   Gene3D; 1.10.8.100; -; 1.
DR   Gene3D; 3.40.50.150; -; 1.
DR   InterPro; IPR001737; KsgA/Erm.
DR   InterPro; IPR023165; rRNA_Ade_diMease-like_C.
DR   InterPro; IPR020596; rRNA_Ade_Mease_Trfase_CS.
DR   InterPro; IPR020598; rRNA_Ade_methylase_Trfase_N.
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   PROSITE; PS01131; RRNA_A_DIMETH; 1.
DR   PROSITE; PS51689; SAM_RNA_A_N6_MT; 1.
PE   3: Inferred from homology;
KW   Antibiotic resistance; Methyltransferase; Plasmid; RNA-binding;
KW   S-adenosyl-L-methionine; Transferase.
FT   CHAIN           1..245
FT                   /note="rRNA adenine N-6-methyltransferase"
FT                   /id="PRO_0000101691"
FT   BINDING         10
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01026"
FT   BINDING         12
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01026"
FT   BINDING         37
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01026"
FT   BINDING         58
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01026"
FT   BINDING         83
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01026"
FT   BINDING         100
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01026"
SQ   SEQUENCE   245 AA;  28796 MW;  8763C133D73309A5 CRC64;
     MKKNIKYSQN FLTNEKVLNQ IIKQLNLKET DTVYEIGTGK GHLTTKLAKI SKQVTSIELD
     SHLFNLSSEK LKLNIRVTLI HQDILQFQFP NKQRYKIVGS IPYHLSTQII KKVVFESHAS
     DIYLIVEEGF YKRTLDIHRS LGLLLHTQVS IQQLLKLPAE CFHPKPKVNS VLIKLTRHTT
     DVPDKYWKLY TYFVSKWVNR EYRQLFTKNQ FHQAMKHAKV NNLSTVTYEQ VLSIFNSYLL
     FNGRK