MOCS3_XENLA
ID MOCS3_XENLA Reviewed; 451 AA.
AC Q58E95;
DT 14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT 26-APR-2005, sequence version 1.
DT 03-AUG-2022, entry version 81.
DE RecName: Full=Adenylyltransferase and sulfurtransferase MOCS3 {ECO:0000255|HAMAP-Rule:MF_03049};
DE AltName: Full=Molybdenum cofactor synthesis protein 3 {ECO:0000255|HAMAP-Rule:MF_03049};
DE Includes:
DE RecName: Full=Molybdopterin-synthase adenylyltransferase {ECO:0000255|HAMAP-Rule:MF_03049};
DE EC=2.7.7.80 {ECO:0000255|HAMAP-Rule:MF_03049};
DE AltName: Full=Adenylyltransferase MOCS3 {ECO:0000255|HAMAP-Rule:MF_03049};
DE AltName: Full=Sulfur carrier protein MOCS2A adenylyltransferase {ECO:0000255|HAMAP-Rule:MF_03049};
DE Includes:
DE RecName: Full=Molybdopterin-synthase sulfurtransferase {ECO:0000255|HAMAP-Rule:MF_03049};
DE EC=2.8.1.11 {ECO:0000255|HAMAP-Rule:MF_03049};
DE AltName: Full=Sulfur carrier protein MOCS2A sulfurtransferase {ECO:0000255|HAMAP-Rule:MF_03049};
DE AltName: Full=Sulfurtransferase MOCS3 {ECO:0000255|HAMAP-Rule:MF_03049};
GN Name=mocs3; Synonyms=uba4;
OS Xenopus laevis (African clawed frog).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Amphibia;
OC Batrachia; Anura; Pipoidea; Pipidae; Xenopodinae; Xenopus; Xenopus.
OX NCBI_TaxID=8355;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC TISSUE=Egg;
RG NIH - Xenopus Gene Collection (XGC) project;
RL Submitted (MAR-2005) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Plays a central role in 2-thiolation of mcm(5)S(2)U at tRNA
CC wobble positions of cytosolic tRNA(Lys), tRNA(Glu) and tRNA(Gln). Also
CC essential during biosynthesis of the molybdenum cofactor. Acts by
CC mediating the C-terminal thiocarboxylation of sulfur carriers urm1 and
CC mocs2a. Its N-terminus first activates urm1 and mocs2a as acyl-
CC adenylates (-COAMP), then the persulfide sulfur on the catalytic
CC cysteine is transferred to urm1 and mocs2a to form thiocarboxylation (-
CC COSH) of their C-terminus. The reaction probably involves hydrogen
CC sulfide that is generated from the persulfide intermediate and that
CC acts as nucleophile towards urm1 and mocs2a. Subsequently, a transient
CC disulfide bond is formed. Does not use thiosulfate as sulfur donor;
CC nfs1 probably acting as a sulfur donor for thiocarboxylation reactions
CC (By similarity). {ECO:0000250}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=[molybdopterin-synthase sulfur-carrier protein]-C-terminal
CC Gly-Gly + ATP + H(+) = [molybdopterin-synthase sulfur-carrier
CC protein]-C-terminal Gly-Gly-AMP + diphosphate; Xref=Rhea:RHEA:43616,
CC Rhea:RHEA-COMP:12159, Rhea:RHEA-COMP:12202, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:30616, ChEBI:CHEBI:33019, ChEBI:CHEBI:90618,
CC ChEBI:CHEBI:90778; EC=2.7.7.80; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_03049};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=[molybdopterin-synthase sulfur-carrier protein]-C-terminal
CC Gly-Gly-AMP + AH2 + S-sulfanyl-L-cysteinyl-[cysteine desulfurase] =
CC [molybdopterin-synthase sulfur-carrier protein]-C-terminal Gly-NH-
CC CH2-C(O)SH + A + AMP + H(+) + L-cysteinyl-[cysteine desulfurase];
CC Xref=Rhea:RHEA:48612, Rhea:RHEA-COMP:12157, Rhea:RHEA-COMP:12158,
CC Rhea:RHEA-COMP:12159, Rhea:RHEA-COMP:12160, ChEBI:CHEBI:13193,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:17499, ChEBI:CHEBI:29950,
CC ChEBI:CHEBI:61963, ChEBI:CHEBI:90618, ChEBI:CHEBI:90619,
CC ChEBI:CHEBI:456215; EC=2.8.1.11; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_03049};
CC -!- COFACTOR:
CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_03049};
CC Note=Binds 1 zinc ion per subunit. {ECO:0000255|HAMAP-Rule:MF_03049};
CC -!- PATHWAY: tRNA modification; 5-methoxycarbonylmethyl-2-thiouridine-tRNA
CC biosynthesis. {ECO:0000255|HAMAP-Rule:MF_03049}.
CC -!- PATHWAY: Cofactor biosynthesis; molybdopterin biosynthesis.
CC {ECO:0000255|HAMAP-Rule:MF_03049}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_03049}.
CC -!- SIMILARITY: In the N-terminal section; belongs to the HesA/MoeB/ThiF
CC family. UBA4 subfamily. {ECO:0000255|HAMAP-Rule:MF_03049}.
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DR EMBL; BC092020; AAH92020.1; -; mRNA.
DR RefSeq; NP_001089319.1; NM_001095850.1.
DR AlphaFoldDB; Q58E95; -.
DR SMR; Q58E95; -.
DR MaxQB; Q58E95; -.
DR DNASU; 734369; -.
DR GeneID; 734369; -.
DR KEGG; xla:734369; -.
DR CTD; 734369; -.
DR Xenbase; XB-GENE-5804203; mocs3.L.
DR OMA; GTIGAMQ; -.
DR OrthoDB; 1445129at2759; -.
DR UniPathway; UPA00344; -.
DR UniPathway; UPA00988; -.
DR Proteomes; UP000186698; Chromosome 5L.
DR Bgee; 734369; Expressed in egg cell and 19 other tissues.
DR GO; GO:0005829; C:cytosol; ISS:UniProtKB.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0061605; F:molybdopterin-synthase adenylyltransferase activity; IEA:UniProtKB-EC.
DR GO; GO:0061604; F:molybdopterin-synthase sulfurtransferase activity; IEA:UniProtKB-EC.
DR GO; GO:0016779; F:nucleotidyltransferase activity; ISS:UniProtKB.
DR GO; GO:0016783; F:sulfurtransferase activity; ISS:UniProtKB.
DR GO; GO:0004792; F:thiosulfate sulfurtransferase activity; ISS:UniProtKB.
DR GO; GO:0042292; F:URM1 activating enzyme activity; ISS:UniProtKB.
DR GO; GO:0006777; P:Mo-molybdopterin cofactor biosynthetic process; ISS:UniProtKB.
DR GO; GO:0034227; P:tRNA thio-modification; ISS:UniProtKB.
DR GO; GO:0002143; P:tRNA wobble position uridine thiolation; IEA:InterPro.
DR GO; GO:0002098; P:tRNA wobble uridine modification; ISS:UniProtKB.
DR Gene3D; 3.40.250.10; -; 1.
DR HAMAP; MF_03049; MOCS3_Uba4; 1.
DR InterPro; IPR028885; MOCS3/Uba4.
DR InterPro; IPR001763; Rhodanese-like_dom.
DR InterPro; IPR036873; Rhodanese-like_dom_sf.
DR InterPro; IPR045886; ThiF/MoeB/HesA.
DR InterPro; IPR000594; ThiF_NAD_FAD-bd.
DR InterPro; IPR035985; Ubiquitin-activating_enz.
DR PANTHER; PTHR10953; PTHR10953; 1.
DR Pfam; PF00581; Rhodanese; 1.
DR Pfam; PF00899; ThiF; 1.
DR SMART; SM00450; RHOD; 1.
DR SUPFAM; SSF69572; SSF69572; 1.
DR PROSITE; PS50206; RHODANESE_3; 1.
PE 2: Evidence at transcript level;
KW ATP-binding; Cytoplasm; Disulfide bond; Metal-binding;
KW Molybdenum cofactor biosynthesis; Multifunctional enzyme;
KW Nucleotide-binding; Reference proteome; Transferase; tRNA processing; Zinc.
FT CHAIN 1..451
FT /note="Adenylyltransferase and sulfurtransferase MOCS3"
FT /id="PRO_0000369196"
FT DOMAIN 341..449
FT /note="Rhodanese"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03049"
FT ACT_SITE 233
FT /note="Glycyl thioester intermediate; for
FT adenylyltransferase activity"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03049"
FT ACT_SITE 405
FT /note="Cysteine persulfide intermediate; for
FT sulfurtransferase activity"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03049"
FT BINDING 86
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03049"
FT BINDING 107
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03049"
FT BINDING 114..118
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03049"
FT BINDING 131
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03049"
FT BINDING 175..176
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03049"
FT BINDING 216
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03049"
FT BINDING 219
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03049"
FT BINDING 291
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03049"
FT BINDING 294
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03049"
FT DISULFID 310..318
FT /note="Alternate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03049"
SQ SEQUENCE 451 AA; 49732 MW; 99C0EA7DD7D8EE88 CRC64;
MDETDSQITC ADSSVDKLSH LKRNEVKSCP LPELHGADEM LPELNKSCLT NPDILRYSRQ
LVLPDLGVQG QLKLSKASVL VIGCGGLGCP VAQYLAASGI GRLGLLDYDV VEMSNLHRQV
LHGENRLGMS KSVSVAKTLR KLNSAVVYLP YHISLNPENA LQIIQQYDII ADCSDNVPTR
YLVNDTCVLA GKPLVSASAL RWEGQLTVYN YHQGPCYRCL FPKPPPSETV TNCADGGVLG
IVPGIIGSLQ ALEVLKIASG MAPSYSGVLL MFDALEGRFR NIKIRGKKND CAACSNPSET
AILQDYEAFC GSSASDKCRM LRLLSRDERL SVEEYKRLLD DHVPHILMDV RPQPEVDICR
LPHSIHIPLK GLEEKNEKWV SFLRTKIAEL ITAGNRTEKT VITICKLGND SQIAVKILQD
LFGKEDLFIA KDVQGGLMAW AENIDPMFPR Y
