TTCA_NEIG1
ID TTCA_NEIG1 Reviewed; 319 AA.
AC Q5F956;
DT 02-SEP-2008, integrated into UniProtKB/Swiss-Prot.
DT 15-MAR-2005, sequence version 1.
DT 03-AUG-2022, entry version 80.
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=NGO0547;
OS Neisseria gonorrhoeae (strain ATCC 700825 / FA 1090).
OC Bacteria; Proteobacteria; Betaproteobacteria; Neisseriales; Neisseriaceae;
OC Neisseria.
OX NCBI_TaxID=242231;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 700825 / FA 1090;
RA Lewis L.A., Gillaspy A.F., McLaughlin R.E., Gipson M., Ducey T.F.,
RA Ownbey T., Hartman K., Nydick C., Carson M.B., Vaughn J., Thomson C.,
RA Song L., Lin S., Yuan X., Najar F., Zhan M., Ren Q., Zhu H., Qi S.,
RA Kenton S.M., Lai H., White J.D., Clifton S., Roe B.A., Dyer D.W.;
RT "The complete genome sequence of Neisseria gonorrhoeae.";
RL Submitted (MAR-2003) to the EMBL/GenBank/DDBJ databases.
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; AE004969; AAW89281.1; -; Genomic_DNA.
DR RefSeq; WP_003692918.1; NC_002946.2.
DR RefSeq; YP_207693.1; NC_002946.2.
DR AlphaFoldDB; Q5F956; -.
DR SMR; Q5F956; -.
DR STRING; 242231.NGO_0547; -.
DR DNASU; 3282109; -.
DR EnsemblBacteria; AAW89281; AAW89281; NGO_0547.
DR KEGG; ngo:NGO_0547; -.
DR PATRIC; fig|242231.10.peg.645; -.
DR HOGENOM; CLU_026481_0_0_4; -.
DR OMA; MNLDQKQ; -.
DR Proteomes; UP000000535; 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..319
FT /note="tRNA-cytidine(32) 2-sulfurtransferase"
FT /id="PRO_0000348771"
FT REGION 272..297
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT MOTIF 43..48
FT /note="PP-loop motif"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01850"
FT BINDING 118
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01850"
FT BINDING 121
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01850"
FT BINDING 209
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01850"
SQ SEQUENCE 319 AA; 35969 MW; 3E4032CE727A36C2 CRC64;
MSKKTKQELE NNKLSKRLRH AVGDTINDFN MIEPGDKIMV CLSGGKDSYA LLDILRRLQA
SAPIDFELVA VNLDQKQPGF PEEVLPTYLE SIGVPYKIVE EDTYSTVKRV LDEGKTTCSL
CSRLRRGILY RTAKELGCTK IALGHHRDDI LATMFLNMFY GGKLKAMPPK LVSDNGEHIV
IRPLAYVKEK DLIKYAELKQ FPIIPCNLCG SQPNLQRQVI GDMLRDWDKR FPGRIESMFS
ALQNVVPSHL ADTELFDFAG LERGQNLKHG GDLAFDSEKM PERFSDGSEE DESEIKIEPQ
KAERKVINIL ANKPKTCGP
