ID A0A135VSP5_9ARCH Unreviewed; 429 AA.
AC A0A135VSP5;
DT 11-MAY-2016, integrated into UniProtKB/TrEMBL.
DT 11-MAY-2016, sequence version 1.
DT 24-JAN-2024, entry version 20.
DE RecName: Full=tRNA-t(6)A37 methylthiotransferase {ECO:0000256|RuleBase:RU368081};
DE EC=2.8.4.5 {ECO:0000256|RuleBase:RU368081};
GN ORFNames=AM326_08710 {ECO:0000313|EMBL:KXH75695.1};
OS Candidatus Thorarchaeota archaeon SMTZ-45.
OC Archaea; Asgard group; Candidatus Thorarchaeota.
OX NCBI_TaxID=1706443 {ECO:0000313|EMBL:KXH75695.1, ECO:0000313|Proteomes:UP000070599};
RN [1] {ECO:0000313|EMBL:KXH75695.1, ECO:0000313|Proteomes:UP000070599}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=SMTZ-45 {ECO:0000313|EMBL:KXH75695.1};
RX PubMed=26824177;
RA Seitz K.W., Lazar C.S., Hinrichs K.U., Teske A.P., Baker B.J.;
RT "Genomic reconstruction of a novel, deeply branched sediment archaeal
RT phylum with pathways for acetogenesis and sulfur reduction.";
RL ISME J. 0:0-0(2016).
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:0000256|ARBA:ARBA00002399, ECO:0000256|RuleBase:RU368081}.
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:0000256|ARBA:ARBA00000730,
CC ECO:0000256|RuleBase:RU368081};
CC -!- COFACTOR:
CC Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC Evidence={ECO:0000256|RuleBase:RU368081};
CC Note=Binds 1 or 2 [4Fe-4S] cluster. One cluster is coordinated with 3
CC cysteines and an exchangeable S-adenosyl-L-methionine.
CC {ECO:0000256|RuleBase:RU368081};
CC -!- SIMILARITY: Belongs to the methylthiotransferase family. CDKAL1
CC subfamily. {ECO:0000256|ARBA:ARBA00008616,
CC ECO:0000256|RuleBase:RU368081}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:KXH75695.1}.
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DR EMBL; LRSM01000079; KXH75695.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A135VSP5; -.
DR Proteomes; UP000070599; Unassembled WGS sequence.
DR GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-UniRule.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0035598; F:N6-threonylcarbomyladenosine methylthiotransferase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0061712; F:tRNA (N(6)-L-threonylcarbamoyladenosine(37)-C(2))-methylthiotransferase; IEA:UniProtKB-UniRule.
DR Gene3D; 3.40.50.12160; Methylthiotransferase, N-terminal domain; 1.
DR Gene3D; 3.80.30.20; tm_1862 like domain; 1.
DR InterPro; IPR006638; Elp3/MiaA/NifB-like_rSAM.
DR InterPro; IPR005839; Methylthiotransferase.
DR InterPro; IPR020612; Methylthiotransferase_CS.
DR InterPro; IPR013848; Methylthiotransferase_N.
DR InterPro; IPR038135; Methylthiotransferase_N_sf.
DR InterPro; IPR006466; MiaB-like_arc_euk.
DR InterPro; IPR007197; rSAM.
DR InterPro; IPR023404; rSAM_horseshoe.
DR InterPro; IPR002792; TRAM_dom.
DR NCBIfam; TIGR01578; MiaB-like-B; 1.
DR NCBIfam; TIGR00089; MiaB/RimO family radical SAM methylthiotransferase; 1.
DR PANTHER; PTHR11918; RADICAL SAM PROTEINS; 1.
DR PANTHER; PTHR11918:SF45; THREONYLCARBAMOYLADENOSINE TRNA METHYLTHIOTRANSFERASE; 1.
DR Pfam; PF04055; Radical_SAM; 1.
DR Pfam; PF01938; TRAM; 1.
DR Pfam; PF00919; UPF0004; 1.
DR SFLD; SFLDG01082; B12-binding_domain_containing; 1.
DR SFLD; SFLDS00029; Radical_SAM; 1.
DR SMART; SM00729; Elp3; 1.
DR SUPFAM; SSF102114; Radical SAM enzymes; 1.
DR PROSITE; PS51449; MTTASE_N; 1.
DR PROSITE; PS01278; MTTASE_RADICAL; 1.
DR PROSITE; PS51918; RADICAL_SAM; 1.
DR PROSITE; PS50926; TRAM; 1.
PE 3: Inferred from homology;
KW 4Fe-4S {ECO:0000256|ARBA:ARBA00022485, ECO:0000256|RuleBase:RU368081};
KW Iron {ECO:0000256|ARBA:ARBA00023004, ECO:0000256|RuleBase:RU368081};
KW Iron-sulfur {ECO:0000256|ARBA:ARBA00023014, ECO:0000256|RuleBase:RU368081};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723,
KW ECO:0000256|RuleBase:RU368081};
KW S-adenosyl-L-methionine {ECO:0000256|ARBA:ARBA00022691,
KW ECO:0000256|RuleBase:RU368081};
KW Transferase {ECO:0000256|RuleBase:RU368081};
KW tRNA processing {ECO:0000256|RuleBase:RU368081}.
FT DOMAIN 3..114
FT /note="MTTase N-terminal"
FT /evidence="ECO:0000259|PROSITE:PS51449"
FT DOMAIN 136..366
FT /note="Radical SAM core"
FT /evidence="ECO:0000259|PROSITE:PS51918"
FT DOMAIN 369..429
FT /note="TRAM"
FT /evidence="ECO:0000259|PROSITE:PS50926"
SQ SEQUENCE 429 AA; 47732 MW; 3CD4E2DFC3A63121 CRC64;
MGLKYYLETY GCSLNAADSD IIVGRLDAID GHRVKDIEEA ELILLNTCGV KEPTEDKIIH
RLEELGQRTL PVIVTGCLPK ISIDRVEKAI PGYAALLGPQ SIETLASIIP RIMGGERGIR
HIESDDAYKL KWFAGPPDSV ICTIPICEGC LGSCAYCAVR FARGKVRSYS IADLHQIIKR
CVHLGYREIR LTSQDAAVFG SDTGETLSGL MQSIGSIEGP HKFRLGMFNP NIVMSSIDGL
LKSMDNEHFF KFFHIPLQSG SDRLLKTMKR RYIVSEWESI VQRVRKRFKN ATIATDIIVG
FPGENESDFE QTLELIQRVK PSVTNISKYG DRPNTLASRS KEKVETSLKK ERSRILTKIV
NQILKESNES WIGWSGPIII TENGPKGGML GRNEAYKTVI VHKDLSPGTI VDVEITSSDR
THLNGEVIS
//
