TTCA_ANADF
ID TTCA_ANADF Reviewed; 303 AA.
AC A7H8W2;
DT 02-SEP-2008, integrated into UniProtKB/Swiss-Prot.
DT 11-SEP-2007, sequence version 1.
DT 03-AUG-2022, entry version 71.
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};
GN OrderedLocusNames=Anae109_0949;
OS Anaeromyxobacter sp. (strain Fw109-5).
OC Bacteria; Proteobacteria; Deltaproteobacteria; Myxococcales;
OC Cystobacterineae; Anaeromyxobacteraceae; Anaeromyxobacter;
OC unclassified Anaeromyxobacter.
OX NCBI_TaxID=404589;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Fw109-5;
RX PubMed=25614562; DOI=10.1128/genomea.01449-14;
RA Hwang C., Copeland A., Lucas S., Lapidus A., Barry K., Glavina Del Rio T.,
RA Dalin E., Tice H., Pitluck S., Sims D., Brettin T., Bruce D.C.,
RA Detter J.C., Han C.S., Schmutz J., Larimer F.W., Land M.L., Hauser L.J.,
RA Kyrpides N., Lykidis A., Richardson P., Belieav A., Sanford R.A.,
RA Loeffler F.E., Fields M.W.;
RT "Complete genome sequence of Anaeromyxobacter sp. Fw109-5, an anaerobic,
RT metal-reducing bacterium isolated from a contaminated subsurface
RT environment.";
RL Genome Announc. 3:0-0(2015).
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; CP000769; ABS25158.1; -; Genomic_DNA.
DR AlphaFoldDB; A7H8W2; -.
DR SMR; A7H8W2; -.
DR STRING; 404589.Anae109_0949; -.
DR EnsemblBacteria; ABS25158; ABS25158; Anae109_0949.
DR KEGG; afw:Anae109_0949; -.
DR eggNOG; COG0037; Bacteria.
DR HOGENOM; CLU_026481_0_0_7; -.
DR OMA; MNLDQKQ; -.
DR Proteomes; UP000006382; 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..303
FT /note="tRNA-cytidine(32) 2-sulfurtransferase"
FT /id="PRO_0000348660"
FT MOTIF 49..54
FT /note="PP-loop motif"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01850"
FT BINDING 124
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01850"
FT BINDING 127
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01850"
FT BINDING 215
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01850"
SQ SEQUENCE 303 AA; 33484 MW; FBF87957166FCBDE CRC64;
MRAPRRRCYR VRPMHDVSKL EKRLLRAAAN AIRDFELIGD GDRIMVAVSG GKDSYTLLHV
LMRLRERAPI DFDLVAVNLD QGQPGYPAEI VERHFQAVGV PHRMLYADTY SIVRRLVPEG
KTTCPVCSRL RRGVLYNAAA EMGCTKIALG HHRDDLVETL LLSALYSGAL KSMPPKLRSD
DGRNVVVRPL CYAAEEDIAA FATAMRFPIV PCDLCGSQPN LRRKRVKALL AELSDEHPAV
KGNLLNALGH VVPSHLLDRD LHRLVASTGR DPWLDGDEDE DGGCLQGEVA DALVKLAGAR
EDA
