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Protein

Isocitrate dehydrogenase [NAD] subunit beta, mitochondrial

Gene

IDH3B

Organism
Pongo abelii (Sumatran orangutan) (Pongo pygmaeus abelii)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at transcript leveli

Functioni

Catalytic activityi

Isocitrate + NAD+ = 2-oxoglutarate + CO2 + NADH.

Cofactori

Mg2+By similarity, Mn2+By similarityNote: Binds 1 Mg(2+) or Mn2+ ion per subunit.By similarity

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Binding sitei133 – 1331SubstrateBy similarity
Binding sitei164 – 1641SubstrateBy similarity
Sitei218 – 2181Critical for catalysisBy similarity
Metal bindingi251 – 2511Magnesium or manganeseBy similarity
Binding sitei251 – 2511SubstrateBy similarity

GO - Molecular functioni

  1. isocitrate dehydrogenase (NAD+) activity Source: UniProtKB-EC
  2. magnesium ion binding Source: InterPro
  3. NAD binding Source: InterPro

GO - Biological processi

  1. tricarboxylic acid cycle Source: UniProtKB-KW
Complete GO annotation...

Keywords - Molecular functioni

Oxidoreductase

Keywords - Biological processi

Tricarboxylic acid cycle

Keywords - Ligandi

Magnesium, Manganese, Metal-binding, NAD

Names & Taxonomyi

Protein namesi
Recommended name:
Isocitrate dehydrogenase [NAD] subunit beta, mitochondrial (EC:1.1.1.41)
Alternative name(s):
Isocitric dehydrogenase subunit beta
NAD(+)-specific ICDH subunit beta
Gene namesi
Name:IDH3B
OrganismiPongo abelii (Sumatran orangutan) (Pongo pygmaeus abelii)
Taxonomic identifieri9601 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaePongo
ProteomesiUP000001595 Componenti: Unplaced

Subcellular locationi

  1. Mitochondrion By similarity

GO - Cellular componenti

  1. mitochondrion Source: UniProtKB-SubCell
Complete GO annotation...

Keywords - Cellular componenti

Mitochondrion

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transit peptidei1 – 3434MitochondrionBy similarityAdd
BLAST
Chaini35 – 385351Isocitrate dehydrogenase [NAD] subunit beta, mitochondrialPRO_0000014446Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Modified residuei199 – 1991N6-acetyllysineBy similarity

Keywords - PTMi

Acetylation

Interactioni

Subunit structurei

Heterooligomer of subunits alpha, beta, and gamma in the apparent ratio of 2:1:1.By similarity

Protein-protein interaction databases

IntActiQ5RBT4. 1 interaction.
MINTiMINT-6732825.

Structurei

3D structure databases

ProteinModelPortaliQ5RBT4.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Keywords - Domaini

Transit peptide

Phylogenomic databases

HOVERGENiHBG052080.
InParanoidiQ5RBT4.
KOiK00030.

Family and domain databases

Gene3Di3.40.718.10. 1 hit.
InterProiIPR019818. IsoCit/isopropylmalate_DH_CS.
IPR001804. Isocitrate/isopropylmalate_DH.
IPR004434. Isocitrate_DH_NAD.
IPR024084. IsoPropMal-DH-like_dom.
[Graphical view]
PANTHERiPTHR11835. PTHR11835. 1 hit.
PfamiPF00180. Iso_dh. 1 hit.
[Graphical view]
TIGRFAMsiTIGR00175. mito_nad_idh. 1 hit.
PROSITEiPS00470. IDH_IMDH. 1 hit.
[Graphical view]

Sequences (2)i

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

This entry describes 2 isoformsi produced by alternative splicing. AlignAdd to basket

Isoform 1 (identifier: Q5RBT4-1) [UniParc]FASTAAdd to basket

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

« Hide

        10         20         30         40         50
MAAVSGVRWL TRALVSAGNP GAWRGLSTSA AAHAASRSQA EDVRVEGSFP
60 70 80 90 100
VTMLPGDGVG PELMHAVKEV FKAAAVPVEF QEHHLSEVQN MASEEKLEQV
110 120 130 140 150
LSSMKENKVA IIGKIHTPME YKGELASYDM RLRRKLDLFA NVVHVKSLPG
160 170 180 190 200
YMTRHNNLDL VIIREQTEGE CSSLEHESAR GVIECLKIVT RAKSQRIAKF
210 220 230 240 250
AFDYATKKGR SKVIAVHKAN IMKLGDGLFL QCCEEVAELY PKIKFETMII
260 270 280 290 300
DNCCMQLVQN PYQFDVLVMP NLYGNIIDNL AAGLVGGAGV VPGESYSAEY
310 320 330 340 350
AVFETGARHP FAQAVGRNIA NPTAMLLSAS NMLRHLNLEY HSSMIADAVK
360 370 380
KVIKVGKVRT RDMGGYSTTT DFIKSVIGHL HPHGS
Length:385
Mass (Da):42,166
Last modified:December 21, 2004 - v1
Checksum:i6341167AD11A7615
GO
Isoform 2 (identifier: Q5RBT4-2) [UniParc]FASTAAdd to basket

The sequence of this isoform differs from the canonical sequence as follows:
     367-385: STTTDFIKSVIGHLHPHGS → ATCHDFTEAVIAALPHP

Note: No experimental confirmation available.

Show »
Length:383
Mass (Da):41,924
Checksum:iF83A0BB37A3BC6D1
GO

Experimental Info

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Sequence conflicti171 – 1711C → Y in CAH90776 (Ref. 1) Curated
Sequence conflicti361 – 3611R → S in CAH91961 (Ref. 1) Curated

Alternative sequence

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Alternative sequencei367 – 38519STTTD…HPHGS → ATCHDFTEAVIAALPHP in isoform 2. 1 PublicationVSP_014101Add
BLAST

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CR858549 mRNA. Translation: CAH90776.1.
CR859803 mRNA. Translation: CAH91961.1.
RefSeqiNP_001125436.1. NM_001131964.1.

Genome annotation databases

GeneIDi100172344.
KEGGipon:100172344.

Keywords - Coding sequence diversityi

Alternative splicing

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CR858549 mRNA. Translation: CAH90776.1.
CR859803 mRNA. Translation: CAH91961.1.
RefSeqiNP_001125436.1. NM_001131964.1.

3D structure databases

ProteinModelPortaliQ5RBT4.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

IntActiQ5RBT4. 1 interaction.
MINTiMINT-6732825.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi100172344.
KEGGipon:100172344.

Organism-specific databases

CTDi3420.

Phylogenomic databases

HOVERGENiHBG052080.
InParanoidiQ5RBT4.
KOiK00030.

Family and domain databases

Gene3Di3.40.718.10. 1 hit.
InterProiIPR019818. IsoCit/isopropylmalate_DH_CS.
IPR001804. Isocitrate/isopropylmalate_DH.
IPR004434. Isocitrate_DH_NAD.
IPR024084. IsoPropMal-DH-like_dom.
[Graphical view]
PANTHERiPTHR11835. PTHR11835. 1 hit.
PfamiPF00180. Iso_dh. 1 hit.
[Graphical view]
TIGRFAMsiTIGR00175. mito_nad_idh. 1 hit.
PROSITEiPS00470. IDH_IMDH. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. The German cDNA consortium
    Submitted (NOV-2004) to the EMBL/GenBank/DDBJ databases
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORMS 1 AND 2).
    Tissue: Heart.

Entry informationi

Entry nameiIDH3B_PONAB
AccessioniPrimary (citable) accession number: Q5RBT4
Secondary accession number(s): Q5R8E9
Entry historyi
Integrated into UniProtKB/Swiss-Prot: June 21, 2005
Last sequence update: December 21, 2004
Last modified: March 4, 2015
This is version 65 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. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

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 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.