ID   MOAE_ALKHC              Reviewed;         156 AA.
AC   Q9K8I7;
DT   11-FEB-2002, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2000, sequence version 1.
DT   03-AUG-2022, entry version 107.
DE   RecName: Full=Molybdopterin synthase catalytic subunit;
DE            EC=2.8.1.12;
DE   AltName: Full=MPT synthase subunit 2;
DE   AltName: Full=Molybdenum cofactor biosynthesis protein E;
DE   AltName: Full=Molybdopterin-converting factor large subunit;
DE   AltName: Full=Molybdopterin-converting factor subunit 2;
GN   Name=moaE; OrderedLocusNames=BH3019;
OS   Alkalihalobacillus halodurans (strain ATCC BAA-125 / DSM 18197 / FERM 7344
OS   / JCM 9153 / C-125) (Bacillus halodurans).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Alkalihalobacillus.
OX   NCBI_TaxID=272558;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-125 / DSM 18197 / FERM 7344 / JCM 9153 / C-125;
RX   PubMed=11058132; DOI=10.1093/nar/28.21.4317;
RA   Takami H., Nakasone K., Takaki Y., Maeno G., Sasaki R., Masui N., Fuji F.,
RA   Hirama C., Nakamura Y., Ogasawara N., Kuhara S., Horikoshi K.;
RT   "Complete genome sequence of the alkaliphilic bacterium Bacillus halodurans
RT   and genomic sequence comparison with Bacillus subtilis.";
RL   Nucleic Acids Res. 28:4317-4331(2000).
CC   -!- FUNCTION: Converts molybdopterin precursor Z into molybdopterin. This
CC       requires the incorporation of two sulfur atoms into precursor Z to
CC       generate a dithiolene group. The sulfur is provided by MoaD (By
CC       similarity). {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2 [molybdopterin-synthase sulfur-carrier protein]-C-terminal
CC         Gly-NH-CH2-C(O)SH + cyclic pyranopterin phosphate + H2O = 2
CC         [molybdopterin-synthase sulfur-carrier protein]-C-terminal Gly-Gly +
CC         4 H(+) + molybdopterin; Xref=Rhea:RHEA:26333, Rhea:RHEA-COMP:12160,
CC         Rhea:RHEA-COMP:12202, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:58698, ChEBI:CHEBI:59648, ChEBI:CHEBI:90619,
CC         ChEBI:CHEBI:90778; EC=2.8.1.12;
CC   -!- PATHWAY: Cofactor biosynthesis; molybdopterin biosynthesis.
CC   -!- SUBUNIT: Heterotetramer of 2 MoaD subunits and 2 MoaE subunits. Also
CC       stable as homodimer. The enzyme changes between these two forms during
CC       catalysis (By similarity). {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the MoaE family. {ECO:0000305}.
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DR   EMBL; BA000004; BAB06738.1; -; Genomic_DNA.
DR   PIR; C84027; C84027.
DR   RefSeq; WP_010899163.1; NC_002570.2.
DR   AlphaFoldDB; Q9K8I7; -.
DR   SMR; Q9K8I7; -.
DR   STRING; 272558.10175641; -.
DR   EnsemblBacteria; BAB06738; BAB06738; BAB06738.
DR   KEGG; bha:BH3019; -.
DR   eggNOG; COG0314; Bacteria.
DR   HOGENOM; CLU_089568_1_2_9; -.
DR   OMA; HERKSCC; -.
DR   OrthoDB; 1877633at2; -.
DR   UniPathway; UPA00344; -.
DR   Proteomes; UP000001258; Chromosome.
DR   GO; GO:0030366; F:molybdopterin synthase activity; IEA:UniProtKB-EC.
DR   GO; GO:0006777; P:Mo-molybdopterin cofactor biosynthetic process; IEA:UniProtKB-KW.
DR   CDD; cd00756; MoaE; 1.
DR   Gene3D; 3.90.1170.40; -; 1.
DR   InterPro; IPR036563; MoaE_sf.
DR   InterPro; IPR003448; Mopterin_biosynth_MoaE.
DR   Pfam; PF02391; MoaE; 1.
DR   SUPFAM; SSF54690; SSF54690; 1.
PE   3: Inferred from homology;
KW   Molybdenum cofactor biosynthesis; Reference proteome; Transferase.
FT   CHAIN           1..156
FT                   /note="Molybdopterin synthase catalytic subunit"
FT                   /id="PRO_0000163077"
FT   BINDING         36..38
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         46
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         102..103
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         118
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         125..127
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   156 AA;  17959 MW;  D5E9947AAD20948E CRC64;
     MTSKRFAIME QPIVIQQVID QVVHPHAGAI NTFIGTVREL TKGKRTLYLQ YEAYPSMAEK
     KLAQIGQEIQ ERWPEARVAI THRIGRLEIT DVAVVIAVST PHRADSYEAS RYAIERIKEI
     VPIWKKEHWE DGEMWVGDQL ETTSYPEGAP KMEEEE