TTCA_ERWT9
ID TTCA_ERWT9 Reviewed; 309 AA.
AC B2VKN8;
DT 28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT 01-JUL-2008, sequence version 1.
DT 03-AUG-2022, entry version 73.
DE RecName: Full=tRNA-cytidine(32) 2-sulfurtransferase {ECO:0000255|HAMAP-Rule:MF_01850};
DE EC=2.8.1.- {ECO:0000255|HAMAP-Rule:MF_01850};
DE AltName: Full=Two-thiocytidine biosynthesis protein A {ECO:0000255|HAMAP-Rule:MF_01850};
DE AltName: Full=tRNA 2-thiocytidine biosynthesis protein TtcA {ECO:0000255|HAMAP-Rule:MF_01850};
GN Name=ttcA {ECO:0000255|HAMAP-Rule:MF_01850}; OrderedLocusNames=ETA_16550;
OS Erwinia tasmaniensis (strain DSM 17950 / CFBP 7177 / CIP 109463 / NCPPB
OS 4357 / Et1/99).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC Erwiniaceae; Erwinia.
OX NCBI_TaxID=465817;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 17950 / CFBP 7177 / CIP 109463 / NCPPB 4357 / Et1/99;
RX PubMed=18462403; DOI=10.1111/j.1462-2920.2008.01639.x;
RA Kube M., Migdoll A.M., Mueller I., Kuhl H., Beck A., Reinhardt R.,
RA Geider K.;
RT "The genome of Erwinia tasmaniensis strain Et1/99, a non-pathogenic
RT bacterium in the genus Erwinia.";
RL Environ. Microbiol. 10:2211-2222(2008).
CC -!- FUNCTION: Catalyzes the ATP-dependent 2-thiolation of cytidine in
CC position 32 of tRNA, to form 2-thiocytidine (s(2)C32). The sulfur atoms
CC are provided by the cysteine/cysteine desulfurase (IscS) system.
CC {ECO:0000255|HAMAP-Rule:MF_01850}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=AH2 + ATP + cytidine(32) in tRNA + S-sulfanyl-L-cysteinyl-
CC [cysteine desulfurase] = 2-thiocytidine(32) in tRNA + A + AMP +
CC diphosphate + H(+) + L-cysteinyl-[cysteine desulfurase];
CC Xref=Rhea:RHEA:57048, Rhea:RHEA-COMP:10288, Rhea:RHEA-COMP:12157,
CC Rhea:RHEA-COMP:12158, Rhea:RHEA-COMP:14821, ChEBI:CHEBI:13193,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:17499, ChEBI:CHEBI:29950,
CC ChEBI:CHEBI:30616, ChEBI:CHEBI:33019, ChEBI:CHEBI:61963,
CC ChEBI:CHEBI:82748, ChEBI:CHEBI:141453, ChEBI:CHEBI:456215;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01850};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:57049;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01850};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01850};
CC -!- COFACTOR:
CC Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01850};
CC Note=Binds 1 [4Fe-4S] cluster per subunit. The cluster is chelated by
CC three Cys residues, the fourth Fe has a free coordination site that may
CC bind a sulfur atom transferred from the persulfide of IscS.
CC {ECO:0000255|HAMAP-Rule:MF_01850};
CC -!- PATHWAY: tRNA modification. {ECO:0000255|HAMAP-Rule:MF_01850}.
CC -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01850}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01850}.
CC -!- MISCELLANEOUS: The thiolation reaction likely consists of two steps: a
CC first activation step by ATP to form an adenylated intermediate of the
CC target base of tRNA, and a second nucleophilic substitution step of the
CC sulfur (S) atom supplied by the hydrosulfide attached to the Fe-S
CC cluster. {ECO:0000255|HAMAP-Rule:MF_01850}.
CC -!- SIMILARITY: Belongs to the TtcA family. {ECO:0000255|HAMAP-
CC Rule:MF_01850}.
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DR EMBL; CU468135; CAO96701.1; -; Genomic_DNA.
DR RefSeq; WP_012441394.1; NC_010694.1.
DR AlphaFoldDB; B2VKN8; -.
DR SMR; B2VKN8; -.
DR STRING; 465817.ETA_16550; -.
DR EnsemblBacteria; CAO96701; CAO96701; ETA_16550.
DR KEGG; eta:ETA_16550; -.
DR eggNOG; COG0037; Bacteria.
DR HOGENOM; CLU_026481_0_0_6; -.
DR OMA; MNLDQKQ; -.
DR OrthoDB; 1051352at2; -.
DR Proteomes; UP000001726; Chromosome.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-UniRule.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0016783; F:sulfurtransferase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0000049; F:tRNA binding; IEA:UniProtKB-KW.
DR GO; GO:0034227; P:tRNA thio-modification; IEA:UniProtKB-UniRule.
DR Gene3D; 3.40.50.620; -; 1.
DR HAMAP; MF_01850; TtcA; 1.
DR InterPro; IPR014729; Rossmann-like_a/b/a_fold.
DR InterPro; IPR011063; TilS/TtcA_N.
DR InterPro; IPR012089; tRNA_Cyd_32_2_STrfase.
DR InterPro; IPR035107; tRNA_thiolation_TtcA_Ctu1.
DR Pfam; PF01171; ATP_bind_3; 1.
DR PIRSF; PIRSF004976; ATPase_YdaO; 1.
PE 3: Inferred from homology;
KW 4Fe-4S; ATP-binding; Cytoplasm; Iron; Iron-sulfur; Magnesium;
KW Metal-binding; Nucleotide-binding; Reference proteome; RNA-binding;
KW Transferase; tRNA processing; tRNA-binding.
FT CHAIN 1..309
FT /note="tRNA-cytidine(32) 2-sulfurtransferase"
FT /id="PRO_1000188642"
FT MOTIF 47..52
FT /note="PP-loop motif"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01850"
FT BINDING 122
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01850"
FT BINDING 125
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01850"
FT BINDING 213
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01850"
SQ SEQUENCE 309 AA; 35219 MW; EDE24466AD22551D CRC64;
MQSNQENSKK GQYNLNKLQK RLRRNVGEAI ADFNMIEEGD RIMVCLSGGK DSYTMLEILR
NLQQSAPISF SLVAVNLDQK QPGFPAHILP EYLEQQGVEY KIVDEDTYSI VKEKIPEGKT
TCSLCSRLRR GILYRTASEL GCTKIALGHH RDDILQTLFL NMFYGGKMKG MPPKLMSDDG
QHIVIRPLAY CREKDIERFA IARQYPIIPC NLCGSQPNLQ RQVIGDMLRD WDKRYPGRIE
TMFTAMQNVV PSHLADADLF DFKQIRHGSE VIDGGDLAFD RETLPLQPSA WQPEEDEATP
ARLDVVQIR
