ID S9TMB3_9TRYP Unreviewed; 485 AA.
AC S9TMB3;
DT 16-OCT-2013, integrated into UniProtKB/TrEMBL.
DT 16-OCT-2013, sequence version 1.
DT 24-JAN-2024, entry version 49.
DE RecName: Full=Inosine-5'-monophosphate dehydrogenase {ECO:0000256|HAMAP-Rule:MF_03156, ECO:0000256|RuleBase:RU003928};
DE Short=IMP dehydrogenase {ECO:0000256|HAMAP-Rule:MF_03156};
DE Short=IMPD {ECO:0000256|HAMAP-Rule:MF_03156};
DE Short=IMPDH {ECO:0000256|HAMAP-Rule:MF_03156};
DE EC=1.1.1.205 {ECO:0000256|HAMAP-Rule:MF_03156, ECO:0000256|RuleBase:RU003928};
GN ORFNames=STCU_01125 {ECO:0000313|EMBL:EPY35549.1}, STCU_06494
GN {ECO:0000313|EMBL:EPY25750.1}, STCU_08551
GN {ECO:0000313|EMBL:EPY21429.1}, STCU_08942
GN {ECO:0000313|EMBL:EPY20560.1}, STCU_09493
GN {ECO:0000313|EMBL:EPY19377.1};
OS Strigomonas culicis.
OC Eukaryota; Discoba; Euglenozoa; Kinetoplastea; Metakinetoplastina;
OC Trypanosomatida; Trypanosomatidae; Strigomonadinae; Strigomonas.
OX NCBI_TaxID=28005 {ECO:0000313|EMBL:EPY19377.1, ECO:0000313|Proteomes:UP000015354};
RN [1] {ECO:0000313|EMBL:EPY19377.1, ECO:0000313|Proteomes:UP000015354}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX PubMed=23560078;
RA Motta M.C., Martins A.C., de Souza S.S., Catta-Preta C.M., Silva R.,
RA Klein C.C., de Almeida L.G., de Lima Cunha O., Ciapina L.P., Brocchi M.,
RA Colabardini A.C., de Araujo Lima B., Machado C.R., de Almeida Soares C.M.,
RA Probst C.M., de Menezes C.B., Thompson C.E., Bartholomeu D.C., Gradia D.F.,
RA Pavoni D.P., Grisard E.C., Fantinatti-Garboggini F., Marchini F.K.,
RA Rodrigues-Luiz G.F., Wagner G., Goldman G.H., Fietto J.L., Elias M.C.,
RA Goldman M.H., Sagot M.F., Pereira M., Stoco P.H., de Mendonca-Neto R.P.,
RA Teixeira S.M., Maciel T.E., de Oliveira Mendes T.A., Urmenyi T.P.,
RA de Souza W., Schenkman S., de Vasconcelos A.T.;
RT "Predicting the Proteins of Angomonas deanei, Strigomonas culicis and Their
RT Respective Endosymbionts Reveals New Aspects of the Trypanosomatidae
RT Family.";
RL PLoS ONE 8:E60209-E60209(2013).
RN [2] {ECO:0000313|EMBL:EPY19377.1}
RP NUCLEOTIDE SEQUENCE.
RA Motta M.C.M., Martins A.C.A., Preta C.M.C.C., Silva R., de Souza S.S.,
RA Klein C.C., de Almeida L.G.P., Cunha O.L., Colabardini A.C., Lima B.A.,
RA Machado C.R., Soares C.M.A., de Menezes C.B.A., Bartolomeu D.C.,
RA Grisard E.C., Fantinatti-Garboggini F., Rodrigues-Luiz G.F., Wagner G.,
RA Goldman G.H., Fietto J.L.R., Ciapina L.P., Brocchi M., Elias M.C.,
RA Goldman M.H.S., Sagot M.-F., Pereira M., Stoco P.H., Teixeira S.M.R.,
RA de Mendonca-Neto R.P., Maciel T.E.F., Mendes T.A.O., Urmenyi T.P.,
RA Teixeira M.M.G., de Camargo E.F.P., de Sousa W., Schenkman S.,
RA de Vasconcelos A.T.R.;
RL Submitted (MAR-2013) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the conversion of inosine 5'-phosphate (IMP) to
CC xanthosine 5'-phosphate (XMP), the first committed and rate-limiting
CC step in the de novo synthesis of guanine nucleotides, and therefore
CC plays an important role in the regulation of cell growth.
CC {ECO:0000256|HAMAP-Rule:MF_03156}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + IMP + NAD(+) = H(+) + NADH + XMP; Xref=Rhea:RHEA:11708,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:57464,
CC ChEBI:CHEBI:57540, ChEBI:CHEBI:57945, ChEBI:CHEBI:58053;
CC EC=1.1.1.205; Evidence={ECO:0000256|ARBA:ARBA00024264,
CC ECO:0000256|HAMAP-Rule:MF_03156, ECO:0000256|RuleBase:RU003928};
CC -!- COFACTOR:
CC Name=K(+); Xref=ChEBI:CHEBI:29103;
CC Evidence={ECO:0000256|ARBA:ARBA00001958,
CC ECO:0000256|HAMAP-Rule:MF_03156};
CC -!- ACTIVITY REGULATION: Mycophenolic acid (MPA) is a non-competitive
CC inhibitor that prevents formation of the closed enzyme conformation by
CC binding to the same site as the amobile flap. In contrast, mizoribine
CC monophosphate (MZP) is a competitive inhibitor that induces the closed
CC conformation. MPA is a potent inhibitor of mammalian IMPDHs but a poor
CC inhibitor of the bacterial enzymes. MZP is a more potent inhibitor of
CC bacterial IMPDH. {ECO:0000256|HAMAP-Rule:MF_03156}.
CC -!- PATHWAY: Purine metabolism; XMP biosynthesis via de novo pathway; XMP
CC from IMP: step 1/1. {ECO:0000256|HAMAP-Rule:MF_03156,
CC ECO:0000256|RuleBase:RU003928}.
CC -!- SUBUNIT: Homotetramer. {ECO:0000256|HAMAP-Rule:MF_03156}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_03156}.
CC -!- SIMILARITY: Belongs to the IMPDH/GMPR family.
CC {ECO:0000256|ARBA:ARBA00005502, ECO:0000256|HAMAP-Rule:MF_03156,
CC ECO:0000256|RuleBase:RU003927}.
CC -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {ECO:0000256|HAMAP-Rule:MF_03156}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:EPY19377.1}.
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DR EMBL; ATMH01009493; EPY19377.1; -; Genomic_DNA.
DR EMBL; ATMH01008942; EPY20560.1; -; Genomic_DNA.
DR EMBL; ATMH01008551; EPY21429.1; -; Genomic_DNA.
DR EMBL; ATMH01006494; EPY25750.1; -; Genomic_DNA.
DR EMBL; ATMH01001125; EPY35549.1; -; Genomic_DNA.
DR AlphaFoldDB; S9TMB3; -.
DR EnsemblProtists; EPY19377; EPY19377; STCU_09493.
DR EnsemblProtists; EPY20560; EPY20560; STCU_08942.
DR EnsemblProtists; EPY21429; EPY21429; STCU_08551.
DR EnsemblProtists; EPY25750; EPY25750; STCU_06494.
DR EnsemblProtists; EPY35549; EPY35549; STCU_01125.
DR OrthoDB; 5472229at2759; -.
DR UniPathway; UPA00601; UER00295.
DR Proteomes; UP000015354; Unassembled WGS sequence.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0003938; F:IMP dehydrogenase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0000166; F:nucleotide binding; IEA:UniProtKB-UniRule.
DR GO; GO:0006177; P:GMP biosynthetic process; IEA:UniProtKB-UniRule.
DR CDD; cd04601; CBS_pair_IMPDH; 1.
DR CDD; cd00381; IMPDH; 1.
DR Gene3D; 3.20.20.70; Aldolase class I; 1.
DR HAMAP; MF_01964; IMPDH; 1.
DR InterPro; IPR013785; Aldolase_TIM.
DR InterPro; IPR000644; CBS_dom.
DR InterPro; IPR046342; CBS_dom_sf.
DR InterPro; IPR005990; IMP_DH.
DR InterPro; IPR015875; IMP_DH/GMP_Rdtase_CS.
DR InterPro; IPR001093; IMP_DH_GMPRt.
DR NCBIfam; TIGR01302; IMP_dehydrog; 1.
DR PANTHER; PTHR11911:SF111; INOSINE-5'-MONOPHOSPHATE DEHYDROGENASE; 1.
DR PANTHER; PTHR11911; INOSINE-5-MONOPHOSPHATE DEHYDROGENASE RELATED; 1.
DR Pfam; PF00571; CBS; 2.
DR Pfam; PF00478; IMPDH; 1.
DR PIRSF; PIRSF000130; IMPDH; 1.
DR SMART; SM00116; CBS; 2.
DR SMART; SM01240; IMPDH; 1.
DR SUPFAM; SSF54631; CBS-domain pair; 1.
DR SUPFAM; SSF51412; Inosine monophosphate dehydrogenase (IMPDH); 1.
DR PROSITE; PS51371; CBS; 2.
DR PROSITE; PS00487; IMP_DH_GMP_RED; 1.
PE 3: Inferred from homology;
KW CBS domain {ECO:0000256|ARBA:ARBA00023122, ECO:0000256|PROSITE-
KW ProRule:PRU00703}; Cytoplasm {ECO:0000256|HAMAP-Rule:MF_03156};
KW GMP biosynthesis {ECO:0000256|ARBA:ARBA00022749, ECO:0000256|HAMAP-
KW Rule:MF_03156};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_03156};
KW NAD {ECO:0000256|ARBA:ARBA00023027, ECO:0000256|HAMAP-Rule:MF_03156};
KW Oxidoreductase {ECO:0000256|HAMAP-Rule:MF_03156,
KW ECO:0000256|RuleBase:RU003927};
KW Potassium {ECO:0000256|ARBA:ARBA00022958, ECO:0000256|HAMAP-Rule:MF_03156};
KW Purine biosynthesis {ECO:0000256|ARBA:ARBA00022755, ECO:0000256|HAMAP-
KW Rule:MF_03156}; Reference proteome {ECO:0000313|Proteomes:UP000015354}.
FT DOMAIN 92..147
FT /note="CBS"
FT /evidence="ECO:0000259|PROSITE:PS51371"
FT DOMAIN 151..209
FT /note="CBS"
FT /evidence="ECO:0000259|PROSITE:PS51371"
FT ACT_SITE 303
FT /note="Thioimidate intermediate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03156,
FT ECO:0000256|PIRSR:PIRSR000130-1"
FT ACT_SITE 399
FT /note="Proton acceptor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03156,
FT ECO:0000256|PIRSR:PIRSR000130-1"
FT BINDING 246..248
FT /ligand="NAD(+)"
FT /ligand_id="ChEBI:CHEBI:57540"
FT /evidence="ECO:0000256|PIRSR:PIRSR000130-3"
FT BINDING 246
FT /ligand="NAD(+)"
FT /ligand_id="ChEBI:CHEBI:57540"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03156"
FT BINDING 296..298
FT /ligand="NAD(+)"
FT /ligand_id="ChEBI:CHEBI:57540"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03156,
FT ECO:0000256|PIRSR:PIRSR000130-3"
FT BINDING 298
FT /ligand="K(+)"
FT /ligand_id="ChEBI:CHEBI:29103"
FT /ligand_note="ligand shared between two tetrameric
FT partners"
FT /note="in other chain"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03156,
FT ECO:0000256|PIRSR:PIRSR000130-4"
FT BINDING 300
FT /ligand="K(+)"
FT /ligand_id="ChEBI:CHEBI:29103"
FT /ligand_note="ligand shared between two tetrameric
FT partners"
FT /note="in other chain"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03156,
FT ECO:0000256|PIRSR:PIRSR000130-4"
FT BINDING 301
FT /ligand="IMP"
FT /ligand_id="ChEBI:CHEBI:58053"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03156,
FT ECO:0000256|PIRSR:PIRSR000130-2"
FT BINDING 303
FT /ligand="K(+)"
FT /ligand_id="ChEBI:CHEBI:29103"
FT /ligand_note="ligand shared between two tetrameric
FT partners"
FT /note="in other chain"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03156,
FT ECO:0000256|PIRSR:PIRSR000130-4"
FT BINDING 336..338
FT /ligand="IMP"
FT /ligand_id="ChEBI:CHEBI:58053"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03156,
FT ECO:0000256|PIRSR:PIRSR000130-2"
FT BINDING 359..360
FT /ligand="IMP"
FT /ligand_id="ChEBI:CHEBI:58053"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03156,
FT ECO:0000256|PIRSR:PIRSR000130-2"
FT BINDING 383..387
FT /ligand="IMP"
FT /ligand_id="ChEBI:CHEBI:58053"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03156,
FT ECO:0000256|PIRSR:PIRSR000130-2"
FT BINDING 413
FT /ligand="IMP"
FT /ligand_id="ChEBI:CHEBI:58053"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03156,
FT ECO:0000256|PIRSR:PIRSR000130-2"
FT BINDING 467
FT /ligand="K(+)"
FT /ligand_id="ChEBI:CHEBI:29103"
FT /ligand_note="ligand shared between two tetrameric
FT partners"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03156"
FT BINDING 468
FT /ligand="K(+)"
FT /ligand_id="ChEBI:CHEBI:29103"
FT /ligand_note="ligand shared between two tetrameric
FT partners"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03156"
FT BINDING 469
FT /ligand="K(+)"
FT /ligand_id="ChEBI:CHEBI:29103"
FT /ligand_note="ligand shared between two tetrameric
FT partners"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03156"
SQ SEQUENCE 485 AA; 51798 MW; 846A92468A9E63B5 CRC64;
MRISKKALTF DDVLLVPSYS EVLPKDASLL TKLTKNISLN IPLVSAAMDT VTESSLAIAL
AQEGGIGIVH KNLTIEEQAK EVSCVKRHEF GIVIDPITVT PEMKVGDAIS LQKKFGISGL
PVVENDTVIG IITNRDLRFE DNLSQPLRNI MTPKERLVIM KEGATLEEAK SLMHKHRLER
VLIVNDDFKL RGLATVKDIV KNTEHPIASK DSRGQLIVGA AVGINPGTEE RVEALVVSGV
DVIVVDTAHG HSRGVLDRIK WIKNNFPNLE VIGGNVATGA AAKSLIEHGA DGIKVGIGPG
SICTTRIISG VGIPQITAIS DVSKAIKGSN IPIIADGGIR YSGDIAKSIA AGASSCMMGS
IFAGTEEAPG EITIFKGRTY KSYRGMGSIG AMADGSADRY FQSNKSTDKL VPEGVEGRVA
YKGSVISIIY QLIGGLRASM GYCGCSSIND MQENTEFVEI TSSGIYESHV HDINITKEAP
NYRSD
//
