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MTND_MONBE
ID   MTND_MONBE              Reviewed;         176 AA.
AC   A9VCM7;
DT   14-DEC-2011, integrated into UniProtKB/Swiss-Prot.
DT   05-FEB-2008, sequence version 1.
DT   03-AUG-2022, entry version 67.
DE   RecName: Full=Acireductone dioxygenase {ECO:0000255|HAMAP-Rule:MF_03154};
DE   AltName: Full=Acireductone dioxygenase (Fe(2+)-requiring) {ECO:0000255|HAMAP-Rule:MF_03154};
DE            Short=ARD' {ECO:0000255|HAMAP-Rule:MF_03154};
DE            Short=Fe-ARD {ECO:0000255|HAMAP-Rule:MF_03154};
DE            EC=1.13.11.54 {ECO:0000255|HAMAP-Rule:MF_03154};
DE   AltName: Full=Acireductone dioxygenase (Ni(2+)-requiring) {ECO:0000255|HAMAP-Rule:MF_03154};
DE            Short=ARD {ECO:0000255|HAMAP-Rule:MF_03154};
DE            Short=Ni-ARD {ECO:0000255|HAMAP-Rule:MF_03154};
DE            EC=1.13.11.53 {ECO:0000255|HAMAP-Rule:MF_03154};
GN   ORFNames=12562;
OS   Monosiga brevicollis (Choanoflagellate).
OC   Eukaryota; Choanoflagellata; Craspedida; Salpingoecidae; Monosiga.
OX   NCBI_TaxID=81824;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MX1 / ATCC 50154;
RX   PubMed=18273011; DOI=10.1038/nature06617;
RG   JGI Sequencing;
RA   King N., Westbrook M.J., Young S.L., Kuo A., Abedin M., Chapman J.,
RA   Fairclough S., Hellsten U., Isogai Y., Letunic I., Marr M., Pincus D.,
RA   Putnam N., Rokas A., Wright K.J., Zuzow R., Dirks W., Good M.,
RA   Goodstein D., Lemons D., Li W., Lyons J.B., Morris A., Nichols S.,
RA   Richter D.J., Salamov A., Bork P., Lim W.A., Manning G., Miller W.T.,
RA   McGinnis W., Shapiro H., Tjian R., Grigoriev I.V., Rokhsar D.;
RT   "The genome of the choanoflagellate Monosiga brevicollis and the origin of
RT   metazoans.";
RL   Nature 451:783-788(2008).
CC   -!- FUNCTION: Catalyzes 2 different reactions between oxygen and the
CC       acireductone 1,2-dihydroxy-3-keto-5-methylthiopentene (DHK-MTPene)
CC       depending upon the metal bound in the active site. Fe-containing
CC       acireductone dioxygenase (Fe-ARD) produces formate and 2-keto-4-
CC       methylthiobutyrate (KMTB), the alpha-ketoacid precursor of methionine
CC       in the methionine recycle pathway. Ni-containing acireductone
CC       dioxygenase (Ni-ARD) produces methylthiopropionate, carbon monoxide and
CC       formate, and does not lie on the methionine recycle pathway.
CC       {ECO:0000255|HAMAP-Rule:MF_03154}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=1,2-dihydroxy-5-(methylsulfanyl)pent-1-en-3-one + O2 = 4-
CC         methylsulfanyl-2-oxobutanoate + formate + 2 H(+);
CC         Xref=Rhea:RHEA:24504, ChEBI:CHEBI:15378, ChEBI:CHEBI:15379,
CC         ChEBI:CHEBI:15740, ChEBI:CHEBI:16723, ChEBI:CHEBI:49252;
CC         EC=1.13.11.54; Evidence={ECO:0000255|HAMAP-Rule:MF_03154};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=1,2-dihydroxy-5-(methylsulfanyl)pent-1-en-3-one + O2 = 3-
CC         (methylsulfanyl)propanoate + CO + formate + 2 H(+);
CC         Xref=Rhea:RHEA:14161, ChEBI:CHEBI:15378, ChEBI:CHEBI:15379,
CC         ChEBI:CHEBI:15740, ChEBI:CHEBI:17245, ChEBI:CHEBI:49016,
CC         ChEBI:CHEBI:49252; EC=1.13.11.53; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_03154};
CC   -!- COFACTOR:
CC       Name=Fe(2+); Xref=ChEBI:CHEBI:29033;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03154};
CC       Name=Ni(2+); Xref=ChEBI:CHEBI:49786;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_03154};
CC       Note=Binds either 1 Fe or Ni cation per monomer. Iron-binding promotes
CC       an acireductone dioxygenase reaction producing 2-keto-4-
CC       methylthiobutyrate, while nickel-binding promotes an acireductone
CC       dioxygenase reaction producing 3-(methylsulfanyl)propanoate.
CC       {ECO:0000255|HAMAP-Rule:MF_03154};
CC   -!- PATHWAY: Amino-acid biosynthesis; L-methionine biosynthesis via salvage
CC       pathway; L-methionine from S-methyl-5-thio-alpha-D-ribose 1-phosphate:
CC       step 5/6. {ECO:0000255|HAMAP-Rule:MF_03154}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_03154}.
CC       Nucleus {ECO:0000255|HAMAP-Rule:MF_03154}.
CC   -!- SIMILARITY: Belongs to the acireductone dioxygenase (ARD) family.
CC       {ECO:0000255|HAMAP-Rule:MF_03154}.
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DR   EMBL; CH991582; EDQ84713.1; -; Genomic_DNA.
DR   RefSeq; XP_001750499.1; XM_001750447.1.
DR   AlphaFoldDB; A9VCM7; -.
DR   SMR; A9VCM7; -.
DR   STRING; 81824.XP_001750499.1; -.
DR   EnsemblProtists; EDQ84713; EDQ84713; MONBRDRAFT_12562.
DR   GeneID; 5895756; -.
DR   KEGG; mbr:MONBRDRAFT_12562; -.
DR   eggNOG; KOG2107; Eukaryota.
DR   InParanoid; A9VCM7; -.
DR   OMA; RGQEDEW; -.
DR   UniPathway; UPA00904; UER00878.
DR   Proteomes; UP000001357; Unassembled WGS sequence.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005634; C:nucleus; IEA:UniProtKB-SubCell.
DR   GO; GO:0010308; F:acireductone dioxygenase (Ni2+-requiring) activity; IEA:RHEA.
DR   GO; GO:0010309; F:acireductone dioxygenase [iron(II)-requiring] activity; IBA:GO_Central.
DR   GO; GO:0005506; F:iron ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0019509; P:L-methionine salvage from methylthioadenosine; IEA:UniProtKB-UniRule.
DR   GO; GO:0006555; P:methionine metabolic process; IBA:GO_Central.
DR   CDD; cd02232; cupin_ARD; 1.
DR   Gene3D; 2.60.120.10; -; 1.
DR   HAMAP; MF_03154; Salvage_MtnD_euk; 1.
DR   InterPro; IPR004313; ARD.
DR   InterPro; IPR027496; ARD_euk.
DR   InterPro; IPR014710; RmlC-like_jellyroll.
DR   InterPro; IPR011051; RmlC_Cupin_sf.
DR   PANTHER; PTHR23418; PTHR23418; 1.
DR   Pfam; PF03079; ARD; 1.
DR   SUPFAM; SSF51182; SSF51182; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Cytoplasm; Dioxygenase; Iron; Metal-binding;
KW   Methionine biosynthesis; Nickel; Nucleus; Oxidoreductase;
KW   Reference proteome.
FT   CHAIN           1..176
FT                   /note="Acireductone dioxygenase"
FT                   /id="PRO_0000414340"
FT   BINDING         87
FT                   /ligand="Fe(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29033"
FT                   /ligand_note="for iron-dependent acireductone dioxygenase
FT                   activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03154"
FT   BINDING         87
FT                   /ligand="Ni(2+)"
FT                   /ligand_id="ChEBI:CHEBI:49786"
FT                   /ligand_note="for nickel-dependent acireductone dioxygenase
FT                   activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03154"
FT   BINDING         89
FT                   /ligand="Fe(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29033"
FT                   /ligand_note="for iron-dependent acireductone dioxygenase
FT                   activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03154"
FT   BINDING         89
FT                   /ligand="Ni(2+)"
FT                   /ligand_id="ChEBI:CHEBI:49786"
FT                   /ligand_note="for nickel-dependent acireductone dioxygenase
FT                   activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03154"
FT   BINDING         93
FT                   /ligand="Fe(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29033"
FT                   /ligand_note="for iron-dependent acireductone dioxygenase
FT                   activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03154"
FT   BINDING         93
FT                   /ligand="Ni(2+)"
FT                   /ligand_id="ChEBI:CHEBI:49786"
FT                   /ligand_note="for nickel-dependent acireductone dioxygenase
FT                   activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03154"
FT   BINDING         132
FT                   /ligand="Fe(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29033"
FT                   /ligand_note="for iron-dependent acireductone dioxygenase
FT                   activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03154"
FT   BINDING         132
FT                   /ligand="Ni(2+)"
FT                   /ligand_id="ChEBI:CHEBI:49786"
FT                   /ligand_note="for nickel-dependent acireductone dioxygenase
FT                   activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_03154"
SQ   SEQUENCE   176 AA;  20729 MW;  56C6F30D63F293AE CRC64;
     MKSWYMADVP EGGDPREPYM TDPLQEVSAE QLKALGVLYW HIPVEDHEEK LKAVCDERNY
     AAQDMITCSR EKLPNYEDKL KTFFTEHLHE DEEIRYVTAG TGYFDVRSKD DRWIRIQVQP
     GDLLILPSGI YHRFTLDTDN YIQAKRLFQA EPKWTPINRP ADDNSFRVEY LKALQN
 
 
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