MTAB_CHLPN
ID MTAB_CHLPN Reviewed; 421 AA.
AC Q9Z874; Q9JS09;
DT 11-JUL-2001, integrated into UniProtKB/Swiss-Prot.
DT 11-JUL-2001, sequence version 2.
DT 03-AUG-2022, entry version 136.
DE RecName: Full=Threonylcarbamoyladenosine tRNA methylthiotransferase MtaB;
DE EC=2.8.4.5;
DE AltName: Full=tRNA-t(6)A37 methylthiotransferase;
GN Name=mtaB; OrderedLocusNames=CPn_0477, CP_0277, CPj0477, CpB0496;
OS Chlamydia pneumoniae (Chlamydophila pneumoniae).
OC Bacteria; Chlamydiae; Chlamydiales; Chlamydiaceae;
OC Chlamydia/Chlamydophila group; Chlamydia.
OX NCBI_TaxID=83558;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CWL029;
RX PubMed=10192388; DOI=10.1038/7716;
RA Kalman S., Mitchell W.P., Marathe R., Lammel C.J., Fan J., Hyman R.W.,
RA Olinger L., Grimwood J., Davis R.W., Stephens R.S.;
RT "Comparative genomes of Chlamydia pneumoniae and C. trachomatis.";
RL Nat. Genet. 21:385-389(1999).
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=AR39;
RX PubMed=10684935; DOI=10.1093/nar/28.6.1397;
RA Read T.D., Brunham R.C., Shen C., Gill S.R., Heidelberg J.F., White O.,
RA Hickey E.K., Peterson J.D., Utterback T.R., Berry K.J., Bass S.,
RA Linher K.D., Weidman J.F., Khouri H.M., Craven B., Bowman C., Dodson R.J.,
RA Gwinn M.L., Nelson W.C., DeBoy R.T., Kolonay J.F., McClarty G.,
RA Salzberg S.L., Eisen J.A., Fraser C.M.;
RT "Genome sequences of Chlamydia trachomatis MoPn and Chlamydia pneumoniae
RT AR39.";
RL Nucleic Acids Res. 28:1397-1406(2000).
RN [3]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=J138;
RX PubMed=10871362; DOI=10.1093/nar/28.12.2311;
RA Shirai M., Hirakawa H., Kimoto M., Tabuchi M., Kishi F., Ouchi K.,
RA Shiba T., Ishii K., Hattori M., Kuhara S., Nakazawa T.;
RT "Comparison of whole genome sequences of Chlamydia pneumoniae J138 from
RT Japan and CWL029 from USA.";
RL Nucleic Acids Res. 28:2311-2314(2000).
RN [4]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=TW-183;
RA Geng M.M., Schuhmacher A., Muehldorfer I., Bensch K.W., Schaefer K.P.,
RA Schneider S., Pohl T., Essig A., Marre R., Melchers K.;
RT "The genome sequence of Chlamydia pneumoniae TW183 and comparison with
RT other Chlamydia strains based on whole genome sequence analysis.";
RL Submitted (MAY-2002) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the methylthiolation of N6-
CC threonylcarbamoyladenosine (t(6)A), leading to the formation of 2-
CC methylthio-N6-threonylcarbamoyladenosine (ms(2)t(6)A) at position 37 in
CC tRNAs that read codons beginning with adenine.
CC {ECO:0000250|UniProtKB:P54462}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=[sulfur carrier]-SH + AH2 + N(6)-L-
CC threonylcarbamoyladenosine(37) in tRNA + 2 S-adenosyl-L-methionine =
CC 2-methylsulfanyl-N(6)-L-threonylcarbamoyladenosine(37) in tRNA + 5'-
CC deoxyadenosine + [sulfur carrier]-H + A + 2 H(+) + L-methionine + S-
CC adenosyl-L-homocysteine; Xref=Rhea:RHEA:37075, Rhea:RHEA-COMP:10163,
CC Rhea:RHEA-COMP:11092, Rhea:RHEA-COMP:14737, Rhea:RHEA-COMP:14739,
CC ChEBI:CHEBI:13193, ChEBI:CHEBI:15378, ChEBI:CHEBI:17319,
CC ChEBI:CHEBI:17499, ChEBI:CHEBI:29917, ChEBI:CHEBI:57844,
CC ChEBI:CHEBI:57856, ChEBI:CHEBI:59789, ChEBI:CHEBI:64428,
CC ChEBI:CHEBI:74418, ChEBI:CHEBI:74420; EC=2.8.4.5;
CC Evidence={ECO:0000250|UniProtKB:P54462};
CC -!- COFACTOR:
CC Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC Evidence={ECO:0000255|PROSITE-ProRule:PRU00780};
CC Note=Binds 2 [4Fe-4S] clusters. One cluster is coordinated with 3
CC cysteines and an exchangeable S-adenosyl-L-methionine.
CC {ECO:0000255|PROSITE-ProRule:PRU00780};
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|PROSITE-ProRule:PRU00780}.
CC -!- SIMILARITY: Belongs to the methylthiotransferase family. MtaB
CC subfamily. {ECO:0000305}.
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DR EMBL; AE001363; AAD18617.1; -; Genomic_DNA.
DR EMBL; AE002161; AAF38135.1; -; Genomic_DNA.
DR EMBL; BA000008; BAA98683.1; -; Genomic_DNA.
DR EMBL; AE009440; AAP98427.1; -; Genomic_DNA.
DR PIR; A86550; A86550.
DR PIR; G72074; G72074.
DR PIR; G81594; G81594.
DR RefSeq; NP_224673.1; NC_000922.1.
DR RefSeq; WP_010892011.1; NZ_LN846995.1.
DR AlphaFoldDB; Q9Z874; -.
DR SMR; Q9Z874; -.
DR STRING; 115711.CP_0277; -.
DR EnsemblBacteria; AAD18617; AAD18617; CPn_0477.
DR EnsemblBacteria; AAF38135; AAF38135; CP_0277.
DR GeneID; 45050522; -.
DR KEGG; cpa:CP_0277; -.
DR KEGG; cpj:yqeV; -.
DR KEGG; cpn:CPn_0477; -.
DR KEGG; cpt:CpB0496; -.
DR PATRIC; fig|115713.3.peg.534; -.
DR eggNOG; COG0621; Bacteria.
DR HOGENOM; CLU_018697_2_0_0; -.
DR Proteomes; UP000000583; Chromosome.
DR Proteomes; UP000000801; Chromosome.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-KW.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0061712; F:tRNA (N(6)-L-threonylcarbamoyladenosine(37)-C(2))-methylthiotransferase; IEA:UniProtKB-EC.
DR GO; GO:0006400; P:tRNA modification; IEA:InterPro.
DR Gene3D; 3.40.50.12160; -; 1.
DR Gene3D; 3.80.30.20; -; 1.
DR InterPro; IPR006638; Elp3/MiaB/NifB.
DR InterPro; IPR005839; Methylthiotransferase.
DR InterPro; IPR020612; Methylthiotransferase_CS.
DR InterPro; IPR013848; Methylthiotransferase_N.
DR InterPro; IPR038135; Methylthiotransferase_N_sf.
DR InterPro; IPR006467; MiaB-like_C.
DR InterPro; IPR007197; rSAM.
DR InterPro; IPR023404; rSAM_horseshoe.
DR Pfam; PF04055; Radical_SAM; 1.
DR Pfam; PF00919; UPF0004; 1.
DR SFLD; SFLDG01061; methylthiotransferase; 1.
DR SFLD; SFLDS00029; Radical_SAM; 1.
DR SMART; SM00729; Elp3; 1.
DR TIGRFAMs; TIGR01579; MiaB-like-C; 1.
DR TIGRFAMs; TIGR00089; TIGR00089; 1.
DR PROSITE; PS51449; MTTASE_N; 1.
DR PROSITE; PS01278; MTTASE_RADICAL; 1.
DR PROSITE; PS51918; RADICAL_SAM; 1.
PE 3: Inferred from homology;
KW 4Fe-4S; Cytoplasm; Iron; Iron-sulfur; Metal-binding;
KW S-adenosyl-L-methionine; Transferase; tRNA processing.
FT CHAIN 1..421
FT /note="Threonylcarbamoyladenosine tRNA
FT methylthiotransferase MtaB"
FT /id="PRO_0000141733"
FT DOMAIN 8..121
FT /note="MTTase N-terminal"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00780"
FT DOMAIN 131..358
FT /note="Radical SAM core"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01266"
FT BINDING 17
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00780"
FT BINDING 54
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00780"
FT BINDING 85
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00780"
FT BINDING 145
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="2"
FT /ligand_note="4Fe-4S-S-AdoMet"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00780"
FT BINDING 149
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="2"
FT /ligand_note="4Fe-4S-S-AdoMet"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00780"
FT BINDING 152
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="2"
FT /ligand_note="4Fe-4S-S-AdoMet"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00780"
FT CONFLICT 210
FT /note="Q -> R (in Ref. 1; AAD18617)"
FT /evidence="ECO:0000305"
SQ SEQUENCE 421 AA; 47190 MW; 6FEBB7F79023AA54 CRC64;
MTVAEVKGTF KLVCLGCRVN QYEVQAYRDQ LTILGYQEVL DSEIPADLCI INTCAVTASA
ESSGRHAVRQ LCRQNPTAHI VVTGCLGESD KEFFASLDRQ CTLVSNKEKS RLIEKIFSYD
TTFPEFKIHS FEGKSRAFIK VQDGCNSFCS YCIIPYLRGR SVSRPAEKIL AEIAGVVDQG
YREVVIAGIN VGDYCDGERS LASLIEQVDQ IPGIERIRIS SIDPDDITED LHRAITSSRH
TCPSSHLVLQ SGSNSILKRM NRKYSRGDFL DCVEKFRASD PRYAFTTDVI VGFPGESDQD
FEDTLRIIED VGFIKVHSFP FSARRRTKAY TFDNQIPNQV IYERKKYLAE VAKRVGQKEM
MKRLGETTEV LVEKVTGQVA TGHSPYFEKV SFPVVGTVAI NTLVSVRLDR VEEEGLIGEI
V
