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NEP1_THEAC
ID   NEP1_THEAC              Reviewed;         222 AA.
AC   Q9HJ48;
DT   10-MAY-2002, integrated into UniProtKB/Swiss-Prot.
DT   10-MAY-2002, sequence version 2.
DT   03-AUG-2022, entry version 92.
DE   RecName: Full=Ribosomal RNA small subunit methyltransferase Nep1 {ECO:0000255|HAMAP-Rule:MF_00554};
DE            EC=2.1.1.- {ECO:0000255|HAMAP-Rule:MF_00554};
DE   AltName: Full=16S rRNA (pseudouridine-N1-)-methyltransferase Nep1 {ECO:0000255|HAMAP-Rule:MF_00554};
GN   Name=nep1; OrderedLocusNames=Ta1124;
OS   Thermoplasma acidophilum (strain ATCC 25905 / DSM 1728 / JCM 9062 / NBRC
OS   15155 / AMRC-C165).
OC   Archaea; Candidatus Thermoplasmatota; Thermoplasmata; Thermoplasmatales;
OC   Thermoplasmataceae; Thermoplasma.
OX   NCBI_TaxID=273075;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 25905 / DSM 1728 / JCM 9062 / NBRC 15155 / AMRC-C165;
RX   PubMed=11029001; DOI=10.1038/35035069;
RA   Ruepp A., Graml W., Santos-Martinez M.-L., Koretke K.K., Volker C.,
RA   Mewes H.-W., Frishman D., Stocker S., Lupas A.N., Baumeister W.;
RT   "The genome sequence of the thermoacidophilic scavenger Thermoplasma
RT   acidophilum.";
RL   Nature 407:508-513(2000).
CC   -!- FUNCTION: Methyltransferase involved in ribosomal biogenesis.
CC       Specifically catalyzes the N1-methylation of the pseudouridine
CC       corresponding to position 914 in M.jannaschii 16S rRNA.
CC       {ECO:0000255|HAMAP-Rule:MF_00554}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a pseudouridine in 16S/18S rRNA + S-adenosyl-L-methionine = an
CC         N(1)-methylpseudouridine in 16S/18S rRNA + H(+) + S-adenosyl-L-
CC         homocysteine; Xref=Rhea:RHEA:46696, Rhea:RHEA-COMP:11633, Rhea:RHEA-
CC         COMP:11634, ChEBI:CHEBI:15378, ChEBI:CHEBI:57856, ChEBI:CHEBI:59789,
CC         ChEBI:CHEBI:65314, ChEBI:CHEBI:74890; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00554};
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00554}.
CC   -!- SIMILARITY: Belongs to the NEP1 family. {ECO:0000255|HAMAP-
CC       Rule:MF_00554}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=CAC12251.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; AL445066; CAC12251.1; ALT_INIT; Genomic_DNA.
DR   RefSeq; WP_010901534.1; NC_002578.1.
DR   AlphaFoldDB; Q9HJ48; -.
DR   SMR; Q9HJ48; -.
DR   STRING; 273075.Ta1124m; -.
DR   EnsemblBacteria; CAC12251; CAC12251; CAC12251.
DR   GeneID; 1457078; -.
DR   KEGG; tac:Ta1124; -.
DR   eggNOG; arCOG04122; Archaea.
DR   HOGENOM; CLU_055846_1_3_2; -.
DR   OMA; VYVHTRN; -.
DR   OrthoDB; 72065at2157; -.
DR   Proteomes; UP000001024; Chromosome.
DR   GO; GO:0070037; F:rRNA (pseudouridine) methyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0019843; F:rRNA binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0070475; P:rRNA base methylation; IEA:InterPro.
DR   CDD; cd18088; Nep1-like; 1.
DR   Gene3D; 3.40.1280.10; -; 1.
DR   HAMAP; MF_00554; NEP1; 1.
DR   InterPro; IPR029028; Alpha/beta_knot_MTases.
DR   InterPro; IPR005304; Rbsml_bgen_MeTrfase_EMG1/NEP1.
DR   InterPro; IPR023503; Ribosome_NEP1_arc.
DR   InterPro; IPR029026; tRNA_m1G_MTases_N.
DR   PANTHER; PTHR12636; PTHR12636; 1.
DR   Pfam; PF03587; EMG1; 1.
DR   SUPFAM; SSF75217; SSF75217; 1.
PE   3: Inferred from homology;
KW   Methyltransferase; Reference proteome; Ribosome biogenesis; RNA-binding;
KW   rRNA processing; rRNA-binding; S-adenosyl-L-methionine; Transferase.
FT   CHAIN           1..222
FT                   /note="Ribosomal RNA small subunit methyltransferase Nep1"
FT                   /id="PRO_0000158624"
FT   BINDING         177
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00554"
FT   BINDING         182
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00554"
FT   BINDING         197..202
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00554"
FT   SITE            62
FT                   /note="Interaction with substrate rRNA"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00554"
FT   SITE            64
FT                   /note="Stabilizes Arg-62"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00554"
FT   SITE            103
FT                   /note="Interaction with substrate rRNA"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00554"
FT   SITE            106
FT                   /note="Interaction with substrate rRNA"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00554"
FT   SITE            110
FT                   /note="Interaction with substrate rRNA"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00554"
SQ   SEQUENCE   222 AA;  25939 MW;  5EE70F05E4D15BB6 CRC64;
     MLHLVIADAE LETIPEEMQA DPAIRRFAKK RNKRVDRMIL DSNYMHTSID RYFPNESKRR
     GRPDIIYLLL EMTQESILNH KNQLRTYVHT RNNQVIRISP ITRMPKSYNR FIGLFEDLFE
     KRIITNNGKE LLSMEESSLG DLINSIRRDR TILLHPKGEM RKPSEFISNA NILIVIGGFS
     EGDFISDTSF INERYAIFDQ ELTIWSVANE MVANYERAVG LT
 
 
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