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Protein

Inosine-5'-monophosphate dehydrogenase 2

Gene

impdh2

Organism
Xenopus tropicalis (Western clawed frog) (Silurana tropicalis)
Status
Reviewed-Annotation score: Annotation score: 4 out of 5-Protein inferred from homologyi

Functioni

Catalyzes the conversion of inosine 5'-phosphate (IMP) to xanthosine 5'-phosphate (XMP), the first committed and rate-limiting step in the de novo synthesis of guanine nucleotides, and therefore plays an important role in the regulation of cell growth.UniRule annotation

Catalytic activityi

Inosine 5'-phosphate + NAD+ + H2O = xanthosine 5'-phosphate + NADH.UniRule annotation

Cofactori

K+UniRule annotation

Enzyme regulationi

Mycophenolic acid (MPA) is a non-competitive inhibitor that prevents formation of the closed enzyme conformation by binding to the same site as the amobile flap. In contrast, mizoribine monophosphate (MZP) is a competitive inhibitor that induces the closed conformation. MPA is a potent inhibitor of mammalian IMPDHs but a poor inhibitor of the bacterial enzymes. MZP is a more potent inhibitor of bacterial IMPDH.UniRule annotation

Pathwayi: XMP biosynthesis via de novo pathway

This protein is involved in step 1 of the subpathway that synthesizes XMP from IMP.UniRule annotation
Proteins known to be involved in this subpathway in this organism are:
  1. Inosine-5'-monophosphate dehydrogenase (impdh2), Inosine-5'-monophosphate dehydrogenase 1 (impdh1), Inosine-5'-monophosphate dehydrogenase (impdh1), Inosine-5'-monophosphate dehydrogenase (impdh1), Inosine-5'-monophosphate dehydrogenase (impdh2), Inosine-5'-monophosphate dehydrogenase 2 (impdh2)
This subpathway is part of the pathway XMP biosynthesis via de novo pathway, which is itself part of Purine metabolism.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes XMP from IMP, the pathway XMP biosynthesis via de novo pathway and in Purine metabolism.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi327Potassium; via carbonyl oxygenUniRule annotation1
Metal bindingi329Potassium; via carbonyl oxygenUniRule annotation1
Binding sitei330IMPUniRule annotation1
Active sitei332Thioimidate intermediateUniRule annotation1
Metal bindingi332Potassium; via carbonyl oxygenUniRule annotation1
Active sitei430Proton acceptorUniRule annotation1
Binding sitei442IMPUniRule annotation1
Metal bindingi501Potassium; via carbonyl oxygen; shared with tetrameric partnerUniRule annotation1
Metal bindingi502Potassium; via carbonyl oxygen; shared with tetrameric partnerUniRule annotation1
Metal bindingi503Potassium; via carbonyl oxygen; shared with tetrameric partnerUniRule annotation1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Nucleotide bindingi275 – 277NADUniRule annotation3
Nucleotide bindingi325 – 327NADUniRule annotation3

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Oxidoreductase

Keywords - Biological processi

GMP biosynthesis, Purine biosynthesis

Keywords - Ligandi

Metal-binding, NAD, Potassium

Enzyme and pathway databases

ReactomeiR-XTR-6798695. Neutrophil degranulation.
R-XTR-73817. Purine ribonucleoside monophosphate biosynthesis.
UniPathwayiUPA00601; UER00295.

Names & Taxonomyi

Protein namesi
Recommended name:
Inosine-5'-monophosphate dehydrogenase 2UniRule annotation (EC:1.1.1.205UniRule annotation)
Short name:
IMP dehydrogenase 2UniRule annotation
Short name:
IMPD 2UniRule annotation
Short name:
IMPDH 2UniRule annotation
Gene namesi
Name:impdh2
OrganismiXenopus tropicalis (Western clawed frog) (Silurana tropicalis)
Taxonomic identifieri8364 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiAmphibiaBatrachiaAnuraPipoideaPipidaeXenopodinaeXenopusSilurana
Proteomesi
  • UP000008143 Componenti: Unassembled WGS sequence

Subcellular locationi

  • Cytoplasm UniRule annotation
  • Nucleus UniRule annotation

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm, Nucleus

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00004156791 – 515Inosine-5'-monophosphate dehydrogenase 2Add BLAST515

Proteomic databases

PaxDbiF7CYY5.

Expressioni

Gene expression databases

BgeeiENSXETG00000009343.
ExpressionAtlasiF7CYY5. differential.

Interactioni

Subunit structurei

Homotetramer.UniRule annotation

Protein-protein interaction databases

STRINGi8364.ENSXETP00000059998.

Structurei

3D structure databases

ProteinModelPortaliF7CYY5.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini114 – 173CBS 1UniRule annotationAdd BLAST60
Domaini179 – 238CBS 2UniRule annotationAdd BLAST60

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni365 – 367IMP bindingUniRule annotation3
Regioni388 – 389IMP bindingUniRule annotation2
Regioni412 – 416IMP bindingUniRule annotation5

Sequence similaritiesi

Belongs to the IMPDH/GMPR family.UniRule annotation
Contains 2 CBS domains.UniRule annotation

Keywords - Domaini

CBS domain, Repeat

Phylogenomic databases

eggNOGiKOG2550. Eukaryota.
COG0516. LUCA.
COG0517. LUCA.
GeneTreeiENSGT00530000062923.
InParanoidiF7CYY5.

Family and domain databases

CDDicd00381. IMPDH. 1 hit.
Gene3Di3.20.20.70. 1 hit.
HAMAPiMF_01964. IMPDH. 1 hit.
InterProiIPR013785. Aldolase_TIM.
IPR000644. CBS_dom.
IPR005990. IMP_DH.
IPR015875. IMP_DH/GMP_Rdtase_CS.
IPR001093. IMP_DH_GMPRt.
[Graphical view]
PfamiPF00571. CBS. 1 hit.
PF00478. IMPDH. 1 hit.
[Graphical view]
PIRSFiPIRSF000130. IMPDH. 1 hit.
SMARTiSM00116. CBS. 2 hits.
[Graphical view]
TIGRFAMsiTIGR01302. IMP_dehydrog. 1 hit.
PROSITEiPS51371. CBS. 2 hits.
PS00487. IMP_DH_GMP_RED. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

F7CYY5-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MADYLISGGT SYVPDDGLTA QQLFGAGDGL TYNDFLILPG YIDFTADQVD
60 70 80 90 100
LTSALTKKIT LKTPMVSSPM DTVTEASMAI AMALTGGIGI MHHNCTPEFQ
110 120 130 140 150
ANEVRKVKKY EQGFITDPVV LSPKHRVRDV FEAKARHGFC GIPITENGKM
160 170 180 190 200
GSKLAGIISS RDIDFLKSEE HDLALSEIMT RREDLVVAPA GVTLKEANEI
210 220 230 240 250
LQRSKKGKLL PIVNGNDELV AIIARTDLKK NRDYPLASKD AKKQLLCGAA
260 270 280 290 300
IGTHEDDKYR LDLLVQAGVD AVVLDSSQGN SIFQINMIKF IKEKYQDLQV
310 320 330 340 350
IAGNVVTAAQ AKNLIDAGAD ALRVGMGSGS ICITQEVLAC GRPQATAVYK
360 370 380 390 400
VSEYARRFGV PVIADGGIQT VGHIAKALAL GASTVMMGSL LAATTEAPGE
410 420 430 440 450
YFFSDGIRLK KYRGMGSLDA MDKNVSSQKR YFSEADKIKV AQGVSGAVQD
460 470 480 490 500
KGSIHKFIPY LIAGIQHSCQ DIGAKSLTQV RAMMYSGELK FEKRTMSAQV
510
EGGVHGLHSY EKRLF
Length:515
Mass (Da):55,625
Last modified:July 27, 2011 - v1
Checksum:iB99CBB519C5BA1DA
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AAMC01018809 Genomic DNA. No translation available.

Genome annotation databases

EnsembliENSXETT00000020581; ENSXETP00000020581; ENSXETG00000009343.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AAMC01018809 Genomic DNA. No translation available.

3D structure databases

ProteinModelPortaliF7CYY5.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi8364.ENSXETP00000059998.

Proteomic databases

PaxDbiF7CYY5.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsembliENSXETT00000020581; ENSXETP00000020581; ENSXETG00000009343.

Phylogenomic databases

eggNOGiKOG2550. Eukaryota.
COG0516. LUCA.
COG0517. LUCA.
GeneTreeiENSGT00530000062923.
InParanoidiF7CYY5.

Enzyme and pathway databases

UniPathwayiUPA00601; UER00295.
ReactomeiR-XTR-6798695. Neutrophil degranulation.
R-XTR-73817. Purine ribonucleoside monophosphate biosynthesis.

Gene expression databases

BgeeiENSXETG00000009343.
ExpressionAtlasiF7CYY5. differential.

Family and domain databases

CDDicd00381. IMPDH. 1 hit.
Gene3Di3.20.20.70. 1 hit.
HAMAPiMF_01964. IMPDH. 1 hit.
InterProiIPR013785. Aldolase_TIM.
IPR000644. CBS_dom.
IPR005990. IMP_DH.
IPR015875. IMP_DH/GMP_Rdtase_CS.
IPR001093. IMP_DH_GMPRt.
[Graphical view]
PfamiPF00571. CBS. 1 hit.
PF00478. IMPDH. 1 hit.
[Graphical view]
PIRSFiPIRSF000130. IMPDH. 1 hit.
SMARTiSM00116. CBS. 2 hits.
[Graphical view]
TIGRFAMsiTIGR01302. IMP_dehydrog. 1 hit.
PROSITEiPS51371. CBS. 2 hits.
PS00487. IMP_DH_GMP_RED. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiIMDH2_XENTR
AccessioniPrimary (citable) accession number: F7CYY5
Entry historyi
Integrated into UniProtKB/Swiss-Prot: February 22, 2012
Last sequence update: July 27, 2011
Last modified: November 30, 2016
This is version 35 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.