TTCA_CUPPJ
ID TTCA_CUPPJ Reviewed; 312 AA.
AC Q476S4;
DT 02-SEP-2008, integrated into UniProtKB/Swiss-Prot.
DT 13-SEP-2005, sequence version 1.
DT 03-AUG-2022, entry version 88.
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=Reut_A0227;
OS Cupriavidus pinatubonensis (strain JMP 134 / LMG 1197) (Cupriavidus necator
OS (strain JMP 134)).
OC Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales;
OC Burkholderiaceae; Cupriavidus.
OX NCBI_TaxID=264198;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=JMP134 / LMG 1197;
RX PubMed=20339589; DOI=10.1371/journal.pone.0009729;
RA Lykidis A., Perez-Pantoja D., Ledger T., Mavromatis K., Anderson I.J.,
RA Ivanova N.N., Hooper S.D., Lapidus A., Lucas S., Gonzalez B.,
RA Kyrpides N.C.;
RT "The complete multipartite genome sequence of Cupriavidus necator JMP134, a
RT versatile pollutant degrader.";
RL PLoS ONE 5:E9729-E9729(2010).
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; CP000090; AAZ59609.1; -; Genomic_DNA.
DR RefSeq; WP_011296417.1; NC_007347.1.
DR AlphaFoldDB; Q476S4; -.
DR SMR; Q476S4; -.
DR STRING; 264198.Reut_A0227; -.
DR EnsemblBacteria; AAZ59609; AAZ59609; Reut_A0227.
DR KEGG; reu:Reut_A0227; -.
DR eggNOG; COG0037; Bacteria.
DR HOGENOM; CLU_026481_0_0_4; -.
DR OMA; MNLDQKQ; -.
DR OrthoDB; 1051352at2; -.
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 Pfam; PF01171; ATP_bind_3; 1.
PE 3: Inferred from homology;
KW 4Fe-4S; ATP-binding; Cytoplasm; Iron; Iron-sulfur; Magnesium;
KW Metal-binding; Nucleotide-binding; RNA-binding; Transferase;
KW tRNA processing; tRNA-binding.
FT CHAIN 1..312
FT /note="tRNA-cytidine(32) 2-sulfurtransferase"
FT /id="PRO_0000348811"
FT MOTIF 39..44
FT /note="PP-loop motif"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01850"
FT BINDING 114
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01850"
FT BINDING 117
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01850"
FT BINDING 205
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01850"
SQ SEQUENCE 312 AA; 34742 MW; 20452BEF2A0D97FF CRC64;
MSHSNNFYRL ETRLQSQTGK AIGDFGMIED GDTVLVCMSG GKDSYTMLSV LMALQKRAPI
QFKLIAMNLD QKQPGFPEHV LPEYLKSTGV EYVIVEADTY SIVKEKVPEG KTTCSLCSRL
RRGVIYRTAK ELGANKIALG HHRDDIVNTF FLNMFFGGKM KAMPPKLATD DGAHIVIRPL
AYCSEKDIAA YARAMEFPII PCNLCGSQEN LQRKKVSEML QAWERENPGR IDNIFASLRN
VVPSHLADTD LFPFTGLATG LAKVDEASLF GETTFTQQPL VFAGSSDENR LEFVRFERPP
QTSATVQQAS IE
