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DLST

gene
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Also known as OGDC-E2KGD2

Summary

DLST (dihydrolipoamide S-succinyltransferase, HGNC:2911) is a protein-coding gene on chromosome 14q24.3, encoding Dihydrolipoyllysine-residue succinyltransferase component of 2-oxoglutarate dehydrogenase complex, mitochondrial (P36957). Dihydrolipoamide succinyltransferase (E2) component of the 2-oxoglutarate dehydrogenase complex. It is a selective cancer dependency (DepMap: 27.6% of cell lines).

This gene encodes a mitochondrial protein that belongs to the 2-oxoacid dehydrogenase family. This protein is one of the three components (the E2 component) of the 2-oxoglutarate dehydrogenase complex that catalyzes the overall conversion of 2-oxoglutarate to succinyl-CoA and CO(2). Alternatively spliced transcript variants have been found for this gene.

Source: NCBI Gene 1743 — RefSeq curated summary.

At a glance

  • Gene–disease (curated): hereditary pheochromocytoma-paraganglioma (Supportive, GenCC) — +2 more curated relationships
  • GWAS associations: 7
  • Clinical variants (ClinVar): 177 total
  • GTEx eGene: eQTL in 12 tissues, sQTL in 6 (q < 0.05)
  • Phenotypes (HPO): 55
  • Cancer dependency (DepMap): dependent in 27.6% of screened cell lines
  • Constraint (gnomAD): pLI 0.99 (loss-of-function intolerant), LOEUF 0.49 (moderately constrained)
  • MANE Select transcript: NM_001933
  • Interaction hub: 1,948 STRING partners (top 8% of genes corpus-wide)
  • Notable: 177 clinical variants but no curated precision-oncology (CIViC) evidence yet

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:2911
Approved symbolDLST
Namedihydrolipoamide S-succinyltransferase
Location14q24.3
Locus typegene with protein product
StatusApproved
AliasesOGDC-E2, KGD2
Ensembl geneENSG00000119689
Ensembl biotypeprotein_coding
OMIM126063
Entrez1743

Gene structure

Transcript identifiers

Ensembl transcripts: 35 — 21 protein_coding, 7 nonsense_mediated_decay, 6 retained_intron, 1 protein_coding_CDS_not_defined

MANE Select: ENST00000334220

Transcript support level (Ensembl TSL; 1 = fully mRNA-supported): TSL 1: 3, TSL 2: 4, TSL 3: 4, TSL 4: 3, TSL 5: 2

ENST00000334220, ENST00000238671, ENST00000550473, ENST00000554612, ENST00000554806, ENST00000555071, ENST00000555089, ENST00000555190, ENST00000555459, ENST00000555492, ENST00000555988, ENST00000556190, ENST00000556460, ENST00000556582, ENST00000557012, ENST00000626051, ENST00000875048, ENST00000875049, ENST00000875050, ENST00000875051, ENST00000875052, ENST00000875053, ENST00000875054, ENST00000875055, ENST00000875056, ENST00000875057, ENST00000875058, ENST00000875059, ENST00000875060, ENST00000875061, ENST00000987012, ENST00001068913, ENST00001116742, ENST00001116743, ENST00001140367

RefSeq mRNA: 2 — MANE Select: NM_001933 NM_001244883, NM_001933

CCDS: CCDS9833

Canonical transcript exons

ENST00000334220 — 15 exons

ExonStartEnd
ENSE000024305057490219674903743
ENSE000034632577488909574889147
ENSE000034838147488558674885634
ENSE000034927457488259174882624
ENSE000035048307488927574889349
ENSE000035756727489992374899996
ENSE000035794147490028974900372
ENSE000036231647490106674901233
ENSE000036316017489431274894409
ENSE000036446487488191674882016
ENSE000036623567489105674891167
ENSE000036647537489283474892986
ENSE000036800707488989774889952
ENSE000036828507489836974898499
ENSE000036841437489334874893424

Expression profiles

Bgee: expression breadth ubiquitous, 283 present calls, max score 97.50.

FANTOM5 (CAGE): breadth ubiquitous, TPM avg 66.3122 / max 472.9507, expressed in 1824 samples.

Highest expression (Bgee): apex of heart, adrenal gland cortex, adrenal gland, heart left ventricle, gastrocnemius.

Genetic regulation across tissues (GTEx eQTL / sQTL)

DLST is an eGene in GTEx v10 — its expression is genetically regulated (eQTL) in 12 tissues and its splicing (sQTL) in 6 (q < 0.05). Strongest associations first; slope = normalized effect of the lead variant’s alternative allele.

18 significant tissue × QTL associations:

TissueQTLq-valueSlopeLead variant
Muscle Skeletaleqtl7.0e-103+0.4214:74901104:C:T
Heart Left Ventricleeqtl1.4e-06+0.1114:74863994:C:T
Brain Cerebellumsqtl3.9e-06+0.6514:74880338:A:G
Adipose Subcutaneoussqtl8.5e-06-0.2414:74785884:T:C
Esophagus Mucosaeqtl1.0e-05+0.1614:74695281:C:T
Heart Atrial Appendageeqtl1.7e-05+0.1114:74865571:G:A
Testiseqtl1.1e-04+0.0914:74844109:G:C
Nerve Tibialsqtl8.2e-04+0.1914:74856211:G:A
Brain Cerebellumeqtl1.4e-03+0.2414:74872747:A:G
Brain Cerebellar Hemispheresqtl1.5e-03+0.5414:74861544:T:C
Livereqtl1.1e-02+0.2914:74887695:C:G
Thyroideqtl1.3e-02+0.0914:74858077:A:G
Stomacheqtl2.0e-02+0.2014:74865977:C:G
Skin Not Sun Exposed Suprapubicsqtl2.3e-02-0.2514:74906772:T:C
Brain Hypothalamuseqtl2.6e-02-0.5314:75429503:C:T
Adipose Visceral Omentumsqtl2.7e-02+0.2614:74844626:C:T
Artery Coronaryeqtl2.8e-02-0.6914:75715388:A:G
Brain Caudate basal gangliaeqtl3.1e-02+0.1414:74928726:G:A

FANTOM5 promoters

2 alternative TSS:

Promoter IDTPM avgSamples expressed
14059064.24781824
1405892.06451459

Top tissues by expression

showing 100 of 297 tissues by Bgee expression score (0-100, higher = more expressed):

TissueAnatomy IDExpression scoreQuality
apex of heartUBERON:000209897.50gold quality
right adrenal gland cortexUBERON:003582797.38gold quality
right adrenal glandUBERON:000123397.30gold quality
heart left ventricleUBERON:000208497.20gold quality
gastrocnemiusUBERON:000138897.19gold quality
left adrenal glandUBERON:000123497.16gold quality
cardiac ventricleUBERON:000208297.15gold quality
muscle of legUBERON:000138397.03gold quality
left adrenal gland cortexUBERON:003582596.98gold quality
right atrium auricular regionUBERON:000663196.90gold quality
lower esophagus muscularis layerUBERON:003583396.87gold quality
lower esophagusUBERON:001347396.86gold quality
secondary oocyteCL:000065596.83gold quality
hindlimb stylopod muscleUBERON:000425296.78gold quality
skin of legUBERON:000151196.75gold quality
rectumUBERON:000105296.74gold quality
skin of abdomenUBERON:000141696.70gold quality
mucosa of stomachUBERON:000119996.67gold quality
transverse colonUBERON:000115796.65gold quality
esophagogastric junction muscularis propriaUBERON:003584196.57gold quality
heartUBERON:000094896.40gold quality
small intestine Peyer’s patchUBERON:000345496.39gold quality
muscle layer of sigmoid colonUBERON:003580596.37gold quality
adrenal cortexUBERON:000123596.36gold quality
adrenal glandUBERON:000236996.31gold quality
endocervixUBERON:000045896.30gold quality
metanephros cortexUBERON:001053396.24gold quality
cardiac atriumUBERON:000208196.19gold quality
body of stomachUBERON:000116196.17gold quality
omental fat padUBERON:001041496.10gold quality
peritoneumUBERON:000235896.08gold quality
stromal cell of endometriumCL:000225596.03gold quality
small intestineUBERON:000210895.97gold quality
body of uterusUBERON:000985395.97gold quality
right ovaryUBERON:000211895.85gold quality
esophagusUBERON:000104395.84gold quality
heart right ventricleUBERON:000208095.82gold quality
ectocervixUBERON:001224995.82gold quality
tibial nerveUBERON:000132395.81gold quality
right lungUBERON:000216795.81gold quality
mucosa of transverse colonUBERON:000499195.80gold quality
popliteal arteryUBERON:000225095.78gold quality
tibial arteryUBERON:000761095.78gold quality
left ovaryUBERON:000211995.77gold quality
left uterine tubeUBERON:000130395.76gold quality
upper lobe of left lungUBERON:000895295.62gold quality
gall bladderUBERON:000211095.61gold quality
descending thoracic aortaUBERON:000234595.54gold quality
left coronary arteryUBERON:000162695.52gold quality
aortaUBERON:000094795.49gold quality
minor salivary glandUBERON:000183095.48gold quality
right coronary arteryUBERON:000162595.44gold quality
adipose tissue of abdominal regionUBERON:000780895.38gold quality
right lobe of thyroid glandUBERON:000111995.37gold quality
sigmoid colonUBERON:000115995.37gold quality
stomachUBERON:000094595.27gold quality
colonUBERON:000115595.24gold quality
thoracic aortaUBERON:000151595.22gold quality
ascending aortaUBERON:000149695.19gold quality
adult mammalian kidneyUBERON:000008295.17gold quality
intestineUBERON:000016095.14gold quality
left lobe of thyroid glandUBERON:000112095.12gold quality
colonic epitheliumUBERON:000039795.10gold quality
muscle organUBERON:000163095.05gold quality
skeletal muscle organUBERON:001489295.05gold quality
right uterine tubeUBERON:000130295.04gold quality
left ventricle myocardiumUBERON:000656695.03gold quality
right lobe of liverUBERON:000111495.02gold quality
coronary arteryUBERON:000162195.02gold quality
esophagus mucosaUBERON:000246994.97gold quality
body of pancreasUBERON:000115094.95gold quality
large intestineUBERON:000005994.94gold quality
islet of LangerhansUBERON:000000694.90gold quality
vaginaUBERON:000099694.89gold quality
lower esophagus mucosaUBERON:003583494.86gold quality
oocyteCL:000002394.80gold quality
granulocyteCL:000009494.78gold quality
zone of skinUBERON:000001494.74gold quality
subcutaneous adipose tissueUBERON:000219094.70gold quality
upper lobe of lungUBERON:000894894.52gold quality
thyroid glandUBERON:000204694.43gold quality
body of tongueUBERON:001187694.38gold quality
smooth muscle tissueUBERON:000113594.29gold quality
ganglionic eminenceUBERON:000402394.21gold quality
right hemisphere of cerebellumUBERON:001489094.17gold quality
triceps brachiiUBERON:000150994.04gold quality
duodenumUBERON:000211493.96gold quality
cerebellar hemisphereUBERON:000224593.94gold quality
adipose tissueUBERON:000101393.81gold quality
fundus of stomachUBERON:000116093.78gold quality
deciduaUBERON:000245093.72gold quality
cerebellar cortexUBERON:000212993.70gold quality
ventricular zoneUBERON:000305393.62gold quality
saliva-secreting glandUBERON:000104493.60gold quality
adenohypophysisUBERON:000219693.54gold quality
cortical plateUBERON:000534393.54gold quality
ovaryUBERON:000099293.48gold quality
pancreasUBERON:000126493.46gold quality
mouth mucosaUBERON:000372993.46gold quality
monocyteCL:000057693.40gold quality

Single-cell (SCXA)

Detected in 1 experiment(s), a significant marker in 1.

ExperimentMarker?Max mean expression
E-ANND-3yes4.04

HPA expression

RNA tissue specificity: Low tissue specificity

showing 60 of 80 HPA tissues / cells by nTPM:

Tissue / cellAxisnTPMProtein (IHC)
Tonguetissue209.4
Skeletal muscletissue135.5medium
Heart muscletissue104.6medium
Kidneytissue93.8high
Frontal cortextissue80.4
Parathyroid glandtissue74.0high
Bone marrowtissue70.8medium
Caudate putamentissue69.8
Livertissue64.5high
Cervixtissue58.5high
Adrenal glandtissue57.9high
Adipose tissuetissue57.1medium
Rectumtissue55.7high
Duodenumtissue55.3medium
Choroid plexustissue54.5
Cerebral cortextissue52.8medium
Colontissue52.8medium
Small intestinetissue52.8medium
Somatosensory cortextissue52.8
Superior colliculitissue52.5
Thalamustissue51.8
Smooth muscletissue48.7low
Occipital cortextissue48.7
Ponstissue48.5
Midbraintissue48.2
Vaginatissue48.1medium
Spinal cordtissue46.8
Medulla oblongatatissue45.9
Motor cortextissue44.9
Esophagustissue44.2medium
Tonsiltissue42.8medium
Prefrontal cortextissue42.7
Placentatissue42.1medium
Temporal cortextissue42.0
Substantia nigratissue41.6
Hippocampal formationtissue41.4
Entorhinal cortextissue41.4
Urinary bladdertissue41.2medium
Seminal vesicletissue40.9high
Epididymistissue40.7medium
Putamentissue40.6
Retrosplenial and cingulate cortextissue40.2
Fallopian tubetissue40.1high
Skin 1tissue39.9medium
Thymustissue39.6
Retrosplenial cortextissue39.6
Stomach 1tissue39.4medium
Ventral forebraintissue39.3
Ovarytissue37.8medium
Insular cortextissue37.7
Thyroid glandtissue37.4medium
Breasttissue37.2
Hypothalamustissue36.4
Septumtissue36.1
Basal gangliatissue36.0medium
Periaqueductal graytissue35.5
Cerebellumtissue35.2high
Endometrium 1tissue34.7medium
Lymph nodetissue34.6high
Lungtissue34.6medium

Brain sub-regions (HPA Brain Atlas): detected in 192; highest nTPM — Blood vessel (56.5), Ventral spinal cord (46.8), Dorsal hippocampus (40.7), Anterior thalamic nucleus, ventral (40.6), Posterior thalamic nucleus (40.6).

Regulation

Is transcription factor: no

Upstream regulators (CollecTRI, top): AHR, AP1, AR, ARID4A, BMAL1, CEBPB, CEBPG, CLOCK, CREB1, E2F1, E2F3, ELK1, ESR1, ESR2, ETS1, FOXL2, GLI2, HES1, HSF2, ID1, ISL1, JUN, MYBL2, MYC, MYOD1, NCOA1, NFIL3, NFKB1, NFKB, NFYA, NR1I3, NR2F1, NR3C1, NR4A1, RARB, RELA, SNAI1, SP1, SP3, SREBF1

miRNA regulators (miRDB)

Targeting DLST by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific).

showing 30 of 38 miRNAs:

miRNAMax scoreAvg scoremiRNA target_count
HSA-MIR-3163100.0077.238605
HSA-MIR-5011-5P100.0083.465820
HSA-MIR-428299.9975.366408
HSA-MIR-3667-3P99.9967.171636
HSA-MIR-548AT-5P99.9670.832666
HSA-MIR-205-3P99.9269.923165
HSA-MIR-30A-3P99.8769.742928
HSA-MIR-30D-3P99.8769.922917
HSA-MIR-30E-3P99.8769.682942
HSA-MIR-6875-3P99.8270.262983
HSA-MIR-313399.8170.923506
HSA-MIR-129099.5969.902079
HSA-MIR-3942-3P99.5769.032854
HSA-MIR-432899.5771.064094
HSA-MIR-5004-3P99.5468.271371
HSA-MIR-122B-5P99.4670.811457
HSA-MIR-140-5P99.4467.20792
HSA-MIR-4797-5P99.3968.011354
HSA-MIR-446099.3768.52615
HSA-MIR-7158-5P99.2567.95796
HSA-MIR-397899.2468.392201
HSA-MIR-510099.1167.521098
HSA-MIR-1207-3P98.9966.221532
HSA-MIR-5001-3P98.9167.281394
HSA-MIR-4712-3P98.5265.39822
HSA-MIR-477398.3567.301710
HSA-MIR-4436B-3P98.2565.261494
HSA-MIR-6735-5P98.2465.361488
HSA-MIR-7843-5P98.1265.261421
HSA-MIR-4632-5P97.8265.381470

Functional genomics

gnomAD constraint: pLI 0.989, LOEUF 0.489, missense Z 1.25 — population loss-of-function intolerance (pLI ≥ 0.9 = LoF-intolerant; lower LOEUF = more constrained). gnomAD

Regional missense constraint (gnomAD)

ENST00000334220 splits into 4 regions with different missense tolerance; 0 are missense-constrained. Missense variants in a constrained region (low observed/expected) are more likely to be pathogenic. gnomAD

Region (GRCh38)Missense obs / expo/eConstrained
14:74,881,954–74,889,290129 / 90.91.42no
14:74,889,291–74,891,11835 / 70.50.50no
14:74,891,119–74,894,400162 / 162.01.00no
14:74,894,401–74,902,327186 / 260.40.71no
DepMap (CRISPR cell-line fitness): dependent in 27.6% of screened cell lines.

Most-dependent cell lines (DepMap gene-effect, lower = stronger; ≤ −0.5 shown): ES5 (-1.609), LP-1 (-1.502), KMS-11 (-1.459), RL95-2 (-1.445), SU-DHL-8 (-1.437), WSU-NHL (-1.297), YCUB-2 (-1.277), F-36P (-1.251), C32 (-1.185), KMCH-1 (-1.18), OCI-LY-19 (-1.176), HB11;19 (-1.167), RPMI 8226 (-1.154), CMS (-1.146), CHRF-288-11 (-1.144).

Literature-anchored findings (GeneRIF, showing 8)

  • Data show that the dihydrolipoamide succinyltransferase gene is bifunctional, and truncated mRNA transcribed from it contributes to the biogenesis of the mitochondrial respiratory complexes. (PMID:12805207)
  • Association between late-onset Alzheimer disease shows strong linkage disequilibrium across the DLST locus. (PMID:15038610)
  • 2-oxoglutarate dehydrogenase complex (OGDHC), the key regulatory enzyme of Krebs cycle. [review] (PMID:22235656)
  • ATP consumption is demonstrated in respiration-impaired isolated and in situ neuronal somal mitochondria from transgenic mice that exhibit a 20-48% decrease in alpha-ketoglutarate dehydrogenase activity. (PMID:23475850)
  • RNAi knockdown of DLST led to decreased cell viability and induction of apoptosis in human T-ALL cell lines (PMID:26876595)
  • five germline variants affecting DLST in eight unrelated individuals were identified; all except one were diagnosed with multiple pheochromocytomas and paragangliomas (PMID:30929736)
  • Germline DLST Variants Promote Epigenetic Modifications in Pheochromocytoma-Paraganglioma. (PMID:33180916)
  • Metabolic Enzyme DLST Promotes Tumor Aggression and Reveals a Vulnerability to OXPHOS Inhibition in High-Risk Neuroblastoma. (PMID:34233924)

Cross-species orthologs

5 orthologs

OrganismSymbolGene ID
danio_reriodlstENSDARG00000014230
mus_musculusDlstENSMUSG00000004789
rattus_norvegicusDlstENSRNOG00000005061
drosophila_melanogasterCG5214FBGN0037891
caenorhabditis_elegansWBGENE00020950

Paralogs (3): PDHX (ENSG00000110435), DBT (ENSG00000137992), DLAT (ENSG00000150768)

Mouse-model phenotypes

Observed phenotypes of the mouse ortholog (MGI:1926170) from MGI (Alliance of Genome Resources) — knockout/mutant phenotypes, ranked by annotation count. 1 distinct phenotype terms.

Mouse phenotype (MP)Records
preweaning lethality, complete penetrance1

Additional cross-species homologs

Sequence homologs in species beyond Ensembl Compara’s model organisms, by Diamond local protein alignment (% sequence identity; best hit per species). Lower-identity rows are more distant homologs. The matched accessions’ gene symbols aren’t in biobtree yet, so each row shows the UniProt accession.

OrganismUniProtIdentityMethod
Escherichia coli K-12P0AFG6100.0%Diamond
Escherichia coli O157:H7P0AFG7100.0%Diamond
Mycobacterium tuberculosis variant bovis AF2122/97P65634100.0%Diamond
Mycobacterium tuberculosis CDC1551P9WIS6100.0%Diamond
Mycobacterium tuberculosis H37RvP9WIS7100.0%Diamond
Staphylococcus aureus subsp. aureus USA300Q2FH26100.0%Diamond
Staphylococcus aureus subsp. aureus NCTC 8325Q2FYM2100.0%Diamond
Staphylococcus aureus subsp. aureus COLQ5HG07100.0%Diamond
Staphylococcus aureus subsp. aureus MSSA476Q6G9E9100.0%Diamond
Staphylococcus aureus subsp. aureus N315Q7A5N4100.0%Diamond
Staphylococcus aureus subsp. aureus MW2Q8NWR7100.0%Diamond
Staphylococcus aureus subsp. aureus Mu50Q99U75100.0%Diamond
Staphylococcus epidermidis RP62AQ5HQ7499.8%Diamond
Staphylococcus epidermidis ATCC 12228Q8CT1399.8%Diamond
Staphylococcus aureus RF122Q2YY0698.8%Diamond
Staphylococcus aureus subsp. aureus MRSA252Q6GGZ698.8%Diamond
Rickettsia felis Marseille-URRWFXCal2Q4UKI793.0%Diamond
Rickettsia conorii str. Malish 7Q92J4393.0%Diamond
Rickettsia typhi str. WilmingtonQ68XI892.5%Diamond
Rickettsia prowazekii str. Madrid EQ9ZDY492.5%Diamond
Bos taurusP1117991.0%Diamond
Sus scrofaQ9N0F188.4%Diamond
Chlamydia trachomatis D/UW-3/CXO8412587.8%Diamond
Rickettsia bellii RML369-CQ1RHI587.1%Diamond
Azotobacter vinelandiiP2070886.8%Diamond
Pseudomonas aeruginosa PAO1Q9I3D286.6%Diamond
Bartonella quintana str. ToulouseQ6FYD486.1%Diamond
Bartonella vinsonii subsp. berkhoffiiQ8GCY186.1%Diamond
Pseudomonas putidaP3105184.5%Diamond
Mesocricetus auratusP8619782.6%Diamond
Haemophilus influenzae Rd KW20P4530281.0%Diamond
Staphylococcus haemolyticus JCSC1435Q4L6C377.6%Diamond
Takifugu rubripesQ9051276.5%Diamond
Staphylococcus saprophyticus subsp. saprophyticus ATCC 15305 = NCTC 7292Q49XM475.5%Diamond
Geobacillus stearothermophilusP1196174.2%Diamond
Bacillus subtilis subsp. subtilis str. 168P2188373.5%Diamond
Buchnera aphidicola str. Sg (Schizaphis graminum)Q8K9N272.4%Diamond
Mycoplasmoides pneumoniae M129P7539271.2%Diamond
Fusarium oxysporum f. sp. lycopersici 4287A0A0D2Y5A770.9%Diamond
Arabidopsis thalianaQ9FLQ470.7%Diamond

Genomic neighbors (locus context)

Genes flanking this one on the chromosome (NCBI/Entrez gene neighborhood). Positional context only — some neighbors share regulatory elements (bidirectional promoters, antisense/overlapping transcripts), but chromosomal adjacency is not itself a functional relationship (see Interactions for that).

SymbolTypeEntrez
PROX2protein-coding283571
RPS6KL1protein-coding83694
MLH3protein-coding27030
PGFprotein-coding5228
EIF2B2protein-coding8892
YLPM1protein-coding56252

Protein

Protein identifiers

Dihydrolipoyllysine-residue succinyltransferase component of 2-oxoglutarate dehydrogenase complex, mitochondrial — P36957 (reviewed: P36957)

Alternative names: 2-oxoglutarate dehydrogenase complex component E2, Dihydrolipoamide succinyltransferase component of 2-oxoglutarate dehydrogenase complex, E2K

All UniProt accessions (8): B7ZAZ8, G3V3F0, G3V498, G3V5L9, G3V5M3, H0YJF9, P36957, Q86SW4

UniProt curated annotations — full annotation on UniProt →

Function. Dihydrolipoamide succinyltransferase (E2) component of the 2-oxoglutarate dehydrogenase complex. The 2-oxoglutarate dehydrogenase complex catalyzes the overall conversion of 2-oxoglutarate to succinyl-CoA and CO(2). The 2-oxoglutarate dehydrogenase complex is mainly active in the mitochondrion. A fraction of the 2-oxoglutarate dehydrogenase complex also localizes in the nucleus and is required for lysine succinylation of histones: associates with KAT2A on chromatin and provides succinyl-CoA to histone succinyltransferase KAT2A.

Subunit / interactions. The 2-oxoglutarate dehydrogenase complex is composed of OGDH (2-oxoglutarate dehydrogenase; E1), DLST (dihydrolipoamide succinyltransferase; E2), DLD (dihydrolipoamide dehydrogenase; E3) and the assembly factor KGD4. It contains multiple copies of the three enzymatic components (E1, E2 and E3). In the nucleus, the 2-oxoglutarate dehydrogenase complex associates with KAT2A. Interacts with ABHD11; this interaction maintains the functional lipoylation of the 2-oxoglutarate dehydrogenase complex.

Subcellular location. Mitochondrion matrix. Nucleus.

Disease relevance. Pheochromocytoma/paraganglioma syndrome 7 (PPGL7) [MIM:618475] A form of pheochromocytoma/paraganglioma syndrome, a tumor predisposition syndrome characterized by the development of neuroendocrine tumors, usually in adulthood. Pheochromocytomas are catecholamine-producing tumors that arise from chromaffin cells in the adrenal medulla. Paragangliomas develop from sympathetic paraganglia in the thorax, abdomen, and pelvis, as well as from parasympathetic paraganglia in the head and neck. PPGL7 tumors are generally benign, tend to be abdominal, and often secrete normetanephrine. PPGL7 inheritance is autosomal dominant. Disease susceptibility is associated with variants affecting the gene represented in this entry.

Cofactor. Binds 1 lipoyl cofactor covalently.

Pathway. Amino-acid degradation; L-lysine degradation via saccharopine pathway; glutaryl-CoA from L-lysine: step 6/6. Carbohydrate metabolism; tricarboxylic acid cycle.

Similarity. Belongs to the 2-oxoacid dehydrogenase family.

Isoforms (2)

UniProt IDNamesCanonical?
P36957-11yes
P36957-22

RefSeq proteins (2): NP_001231812, NP_001924* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR000089Biotin_lipoylDomain
IPR0010782-oxoacid_DH_actylTfraseDomain
IPR0030162-oxoA_DH_lipoyl-BSBinding_site
IPR006255SucBFamily
IPR011053Single_hybrid_motifHomologous_superfamily
IPR023213CAT-like_dom_sfHomologous_superfamily
IPR0505372-oxoacid_dehydrogenaseFamily

Pfam: PF00198, PF00364

Enzyme classification (BRENDA)

  • EC 1.2.1.105 — 2-oxoglutarate dehydrogenase system (BRENDA: 28 organisms, 44 substrates, 119 inhibitors, 83 Km, 16 kcat entries)

Substrate kinetics (BRENDA)

5 substrates with measured Km, best-characterized 5. Km ranges are aggregated across organisms/conditions.

SubstrateKm (mM)Measurements
2-OXOGLUTARATE0.0025–10.150
COA0.0032–0.07511
NAD+0.0249–0.311
2-OXOVALERATE0.0063–0.01635
2-OXOADIPATE0.107–0.522

Catalyzed reactions (Rhea)

  • N(6)-[(R)-dihydrolipoyl]-L-lysyl-[protein] + succinyl-CoA = N(6)-[(R)-S(8)-succinyldihydrolipoyl]-L-lysyl-[protein] + CoA (RHEA:15213)

UniProt features (54 total): helix 11, strand 9, modified residue 8, sequence variant 6, sequence conflict 4, turn 4, splice variant 2, mutagenesis site 2, compositionally biased region 2, active site 2, transit peptide 1, chain 1, domain 1, region of interest 1

Structure

Experimental structures (PDB)

2 structures by resolution:

PDBTitleMethodResolution (Å)
6H05Cryo-electron microscopic structure of the dihydrolipoamide succinyltransferase (E2) …ELECTRON MICROSCOPY2.9
9RCASolution NMR structure of the lipoyl domain of the E2 subunit in the human …SOLUTION NMR

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-P36957-F177.400.44

Human Protein Atlas

Protein class: Enzymes, ENZYME proteins, Transferases, Metabolic proteins, Predicted intracellular proteins, Citric acid cycle related proteins, Disease related genes, Potential drug targets, Human disease related genes, Essential proteins

Protein evidence: Evidence at protein level

Subcellular location (HPA, imaging): nucleoplasm; cytosol; mitochondria

Antibody reliability (HPA): IH supported · IF supported

Functional residue map

Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.

Catalytic / active sites (2)

PositionRole
424
428

Post-translational modifications (8)

TypePositions
N6-acetyllysine154, 267, 272, 273, 277, 307
Phosphoserine81
N6-lipoyllysine110

Mutagenesis-validated functional residues (2)

PositionPhenotype
224–226reduced nuclear localization of the 2-oxoglutarate dehydrogenase complex. reduced histone succinylation.
424loss of dihydrolipoyllysine-residue succinyltransferase activity.

Function

Pathways and Gene Ontology

Reactome pathways

4 curated (TAS) of 12; 0 disease pathways. Curated-first; evidence = TAS (manually curated) vs IEA (electronic inference).

12 pathways:

IDPathwayEvidence
R-HSA-6783984Glycine degradationcurated
R-HSA-9858328OADH complex synthesizes glutaryl-CoA from 2-OAcurated
R-HSA-9853506OGDH complex synthesizes succinyl-CoA from 2-OGcurated
R-HSA-9857492Protein lipoylationcurated
R-HSA-1428517Aerobic respiration and respiratory electron transport—
R-HSA-71403Citric acid cycle (TCA cycle)—
R-HSA-389661Glyoxylate metabolism and glycine degradation—
R-HSA-71064Lysine catabolism—
R-HSA-1430728Metabolism—
R-HSA-71291Metabolism of amino acids and derivatives—
R-HSA-392499Metabolism of proteins—
R-HSA-597592Post-translational protein modification—

MSigDB gene sets: 339 (showing top): GGGACCA_MIR133A_MIR133B, E2F_Q4_01, GOBP_ALPHA_AMINO_ACID_METABOLIC_PROCESS, CREBP1_Q2, GOBP_ORGANOPHOSPHATE_METABOLIC_PROCESS, GOBP_NUCLEOSIDE_PHOSPHATE_BIOSYNTHETIC_PROCESS, GOBP_ACETYL_COA_METABOLIC_PROCESS, GOBP_ORGANOPHOSPHATE_BIOSYNTHETIC_PROCESS, GOBP_DICARBOXYLIC_ACID_METABOLIC_PROCESS, PUJANA_CHEK2_PCC_NETWORK, GOBP_NUCLEOBASE_CONTAINING_SMALL_MOLECULE_METABOLIC_PROCESS, BILD_HRAS_ONCOGENIC_SIGNATURE, GOBP_GENERATION_OF_PRECURSOR_METABOLITES_AND_ENERGY, ONKEN_UVEAL_MELANOMA_UP, E2F_Q3

GO Biological Process (5): generation of precursor metabolites and energy (GO:0006091), tricarboxylic acid cycle (GO:0006099), 2-oxoglutarate metabolic process (GO:0006103), succinyl-CoA metabolic process (GO:0006104), 2-oxoglutarate decarboxylation to succinyl-CoA (GO:0120551)

GO Molecular Function (5): dihydrolipoyllysine-residue succinyltransferase activity (GO:0004149), acyltransferase activity (GO:0016746), protein binding (GO:0005515), transferase activity (GO:0016740), dihydrolipoyllysine-residue glutaryltransferase activity (GO:0120571)

GO Cellular Component (7): nucleus (GO:0005634), nucleoplasm (GO:0005654), mitochondrion (GO:0005739), mitochondrial matrix (GO:0005759), membrane (GO:0016020), oxoglutarate dehydrogenase complex (GO:0045252), oxoadipate dehydrogenase complex (GO:0160167)

Reactome top-level categories

8 top-level categories:

CategoryPathways
Metabolism2
Metabolism of amino acids and derivatives2
Glyoxylate metabolism and glycine degradation1
Citric acid cycle (TCA cycle)1
Post-translational protein modification1
Lysine catabolism1
Metabolism of proteins1
Aerobic respiration and respiratory electron transport1

GO top-level categories

23 GO namespaces:

CategoryTerms
intracellular membrane-bounded organelle2
cellular anatomical structure2
alpha-ketoacid dehydrogenase complex2
transferase complex2
metabolic process1
aerobic respiration1
primary metabolic process1
dicarboxylic acid metabolic process1
acyl-CoA metabolic process1
tricarboxylic acid cycle1
2-oxoglutarate metabolic process1
succinyl-CoA biosynthetic process1
S-succinyltransferase activity1
catalytic activity, acting on a protein1
transferase activity1
binding1
catalytic activity1
acyltransferase activity, transferring groups other than amino-acyl groups1
nuclear lumen1
cytoplasm1
mitochondrion1
intracellular organelle lumen1
tricarboxylic acid cycle heteromeric enzyme complex1

Experimentally-supported GO annotations

GO terms backed by direct experimental evidence (ECO experimental codes) — 9 of 18 annotations. The rest are phylogenetic / computational / electronic (IEA).

9 experimentally-supported GO terms:

GO termNSEvidence
tricarboxylic acid cycleBPmutant phenotype
membraneCChigh-throughput assay
mitochondrionCCdirect assay
nucleoplasmCCdirect assay
nucleusCCdirect assay
oxoadipate dehydrogenase complexCCdirect assay
oxoglutarate dehydrogenase complexCCdirect assay
acyltransferase activityMFmutant phenotype
dihydrolipoyllysine-residue succinyltransferase activityMFmutant phenotype

Protein interactions and networks

STRING

showing 15 of 1,948 interactions by confidence (×1000):

Protein AProtein BPartner UniProtScore
DLSTOGDHQ02218990
DLSTDLDP09622718
DLSTACO2Q99798699
DLSTMDH2P40926664
DLSTDHTKD1Q96HY7637
DLSTOGDHLQ9ULD0632
DLSTIDH3AP50213602
DLSTACO1P21399602
DLSTSUCLA2Q9P2R7600
DLSTFHP07954590
DLSTSUCLG1P53597590
DLSTIDH2P48735587
DLSTCSO75390585
DLSTIDH1O75874573
DLSTIDH3BO43837561

IntAct

Human interaction partners of DLST in IntAct, one row per partner (best MIscore; records = supporting IntAct interaction records).

showing 30 of 91 partners by confidence:

PartnerInteraction typeMIscoreRecords
PSMC4physical association0.6703
ARHGEF28physical association0.5603
C1orf216physical association0.5603
CAMTA2physical association0.5603
CNOT3physical association0.5603
CRELD2physical association0.5603
DNASE1L1physical association0.5603
DRC7physical association0.5603
EGFL8physical association0.5603
EPCAMphysical association0.5603
EVA1Bphysical association0.5603
FAHD2Aphysical association0.5603
FUT2physical association0.5603
GJA5physical association0.5603
GNAO1physical association0.5603
HLA-DRB3physical association0.5603
HSD3B1physical association0.5603
HTTphysical association0.5603
HUWE1physical association0.5603
IDH1physical association0.5603
ISY1physical association0.5603
KIAA1683physical association0.5603
KLRC1physical association0.5603
LEG1physical association0.5603
LGALS1physical association0.5603
LGALS8physical association0.5603
MAGEA2physical association0.5603
MAVSphysical association0.5603
MFIphysical association0.5603
MGC39372physical association0.5603

BioGRID (558 interactions; top human partners by supporting records): DLD (Affinity Capture-MS; 5 records), OGDH (Co-fractionation; 5 records), SIAH2 (Biochemical Activity; 4 records), PRNP (Affinity Capture-MS; 3 records), AARS2 (Affinity Capture-MS; 2 records), ATP5O (Affinity Capture-MS; 2 records), CAPZA2 (Affinity Capture-MS; 2 records), CAPZB (Affinity Capture-MS; 2 records), CCT7 (Affinity Capture-MS; 2 records), CFTR (Affinity Capture-MS; 2 records), COX4I1 (Proximity Label-MS; 2 records), CS (Proximity Label-MS; 2 records), DLAT (Co-fractionation; 2 records), DYNC1H1 (Affinity Capture-MS; 2 records), GRSF1 (Proximity Label-MS; 2 records)

SIGNOR signaling

1 signaling interactions:

AEffectBMechanism
DLST“form complex”OGDCbinding

Protein complexes (CORUM) (1)

Experimentally-characterized complexes this protein is a subunit of (★ = the complex contains a known drug target).

1 complexes by size:

ComplexSubunitsMembers
KAT2A-Oxoglutarate dehydrogenase complex4DLST, KAT2A, OGDH, DLD

Disease & clinical

Genetic variants

Variant evidence for DLST: 177 ClinVar records (0 pathogenic / likely pathogenic); 7 GWAS associations.

ClinVar

177 variants total. Per-class counts are floors (≥ shown; pagination cap):

ClassificationCount (floor)
Pathogenic0
Likely pathogenic0
Uncertain significance101
Likely benign47
Benign12

SpliceAI

Top 10 splice-impact sites by Δscore (adjacent positions with the same effect merged into one range; 32 predictions of 984):

Position(s)EffectΔscoreSites
14:74882017donor_loss1.00002
14:74889261acceptor_gain1.0000
14:74889265acceptor_gain1.0000
14:74889273–74889274acceptor_loss1.00006
14:74889350–74889351donor_loss1.00005
14:74889953–74889954donor_loss1.00005
14:74891158donor_gain1.0000
14:74892832–74892833acceptor_loss1.00006
14:74892987–74892988donor_loss1.00004
14:74893346acceptor_loss1.0000

AlphaMissense

1,202 missense substitutions predicted likely pathogenic (of 2,936 scored), across 276 residues. Top 20 hotspot residues, ranked by the number of likely-pathogenic substitutions (of those reachable by a single-nucleotide change), then by mean score:

ResidueLikely-pathogenic substitutionsMean am_pathogenicityMax am_pathogenicity
M41690.9220.991
M28190.8340.985
H42480.9960.999
D42380.9920.998
D42880.9860.996
D10980.9820.998
F7880.9790.997
F28480.9710.996
F36980.9570.998
D8680.9450.985
H39780.9420.993
F14180.9340.998
D31680.9200.988
F25180.9110.995
F43580.8980.989
D10080.8820.983
D44580.8430.975
D36380.8020.940
D9580.7770.946
W8970.9910.999

HPA cancer prognostics

RNA cancer specificity: Low cancer specificity

Human Protein Atlas survival analysis — favorable = higher expression predicts better survival.

2 prognostic cancer types:

CancerPrognosticp-value
Kidney Renal Clear Cell Carcinoma (TCGA)favorable5.55e-08
Kidney Renal Papillary Cell Carcinoma (TCGA)favorable6.36e-05

Disease associations

OMIM: gene MIM:126063 | disease phenotypes:

GenCC curated gene-disease

3 curated gene-disease records:

DiseaseClassificationInheritanceRecords
hereditary pheochromocytoma-paragangliomaSupportiveAutosomal dominant
pheochromocytoma/paraganglioma syndrome 7LimitedAutosomal dominant2
pyruvate dehydrogenase E1-alpha deficiencyNo Known Disease RelationshipAutosomal recessive

Mondo (3): pheochromocytoma/paraganglioma syndrome 7 (MONDO:0032771), pyruvate dehydrogenase E1-alpha deficiency (MONDO:0010717), hereditary pheochromocytoma-paraganglioma (MONDO:0017366)

HPO phenotypes

55 phenotypes (HPO-id order):

HPOTerm
HP:0000006Autosomal dominant inheritance
HP:0000083Renal insufficiency
HP:0000093Proteinuria
HP:0000096Glomerular sclerosis
HP:0000405Conductive hearing impairment
HP:0000526Aniridia
HP:0000740Episodic paroxysmal anxiety
HP:0000790Hematuria
HP:0000822Hypertension
HP:0000980Pallor
HP:0001069Episodic hyperhidrosis
HP:0001095Hypertensive retinopathy
HP:0001278Orthostatic hypotension
HP:0001279Syncope
HP:0001293Cranial nerve compression
HP:0001337Tremor
HP:0001342Cerebral hemorrhage
HP:0001605Vocal cord paralysis
HP:0001618Dysphonia
HP:0001635Congestive heart failure
HP:0001638Cardiomyopathy
HP:0001824Weight loss
HP:0001962Palpitations
HP:0002018Nausea
HP:0002019Constipation
HP:0002331Recurrent paroxysmal headache
HP:0002574Episodic abdominal pain
HP:0002640Hypertension associated with pheochromocytoma
HP:0002666Pheochromocytoma
HP:0002668Paraganglioma
HP:0002864Paraganglioma of head and neck
HP:0003072Hypercalcemia
HP:0003074Hyperglycemia
HP:0003345Elevated urinary norepinephrine level
HP:0003528Elevated circulating calcitonin concentration
HP:0003574Positive regitine blocking test
HP:0003581Adult onset
HP:0003639Elevated urinary epinephrine level
HP:0003829Typified by incomplete penetrance
HP:0005584Renal cell carcinoma
HP:0006737Extraadrenal pheochromocytoma
HP:0006748Adrenal pheochromocytoma
HP:0008629Pulsatile tinnitus
HP:0009711Retinal capillary hemangioma
HP:0010532Paroxysmal vertigo
HP:0011703Sinus tachycardia
HP:0011979Elevated urinary dopamine level
HP:0012222Arachnoid hemangiomatosis
HP:0012378Fatigue
HP:0012819Myocarditis
HP:0025269Panic attack
HP:0031284Flushing
HP:0031500Abdominal mass
HP:0100735Hypertensive crisis
HP:0100749Chest pain

GWAS associations

7 associations:

StudyTraitp-value
GCST90000025_143Appendicular lean mass6e-27
GCST90002381_503Eosinophil count5e-10
GCST005238_3Mood instability3e-9
GCST005839_15Depression4e-9
GCST009600_1Anorexia nervosa, attention-deficit/hyperactivity disorder, autism spectrum disorder, bipolar disorder, major depression, obsessive-compulsive disorder, schizophrenia, or Tourette syndrome (pleiotropy)2e-8
GCST005237_3Mood instability1e-6
GCST001734_8Non-small cell lung cancer7e-6

EFO canonical traits (from GWAS)

3 canonical traits:

EFO IDTrait name
EFO:0008475mood instability measurement
EFO:0004980appendicular lean mass
EFO:0004842eosinophil count

MeSH disease descriptors

1 disease descriptors:

DescriptorNameTree numbers
C564071Pyruvate Dehydrogenase E1 Alpha Deficiency *(supp.)*

Drugs & pharmacology

Drug and pharmacology data

Is drug target: yes

ChEMBL targets (1): CHEMBL6066909 (SINGLE PROTEIN)

PharmGKB: 1 entry (CPIC guideline: no)

Binding affinities (BindingDB)

1 measured of 1 human assays (1 total across all organisms); most potent 1 below. Values come from heterogeneous assays and are not directly comparable.

LigandMeasureValue
CHEMBL5653589KD1440 nM

ChEMBL bioactivities

2 potent at pChembl≥5 of 2 total, top 2 by pChembl (potency: 10 = 0.1 nM, 6 = 1 µM).

pChemblTypeValueUnitMolecule
5.73Kd1864nMCHEMBL5653589
5.73ED501864nMCHEMBL5653589

PubChem BioAssay actives

1 with measured affinity, of 2 total; 1 most potent distinct compounds. Largely complementary to BindingDB; screening values are coarse (µM, 4 dp), so sub-nM hits tie at the floor.

CompoundAssayTypeValueUnit
4-methyl-3-[(2-methyl-6-pyridin-3-ylpyrazolo[3,4-d]pyrimidin-4-yl)amino]-N-[3-(trifluoromethyl)phenyl]benzamide2148245: Binding affinity to human DLST incubated for 45 mins by Kinobead based pull down assaykd1.8636uM

CTD chemical–gene interactions

39 total (human), top 30 by PubMed support.

ChemicalActions (top 5)PubMed papers
bisphenol Adecreases expression, increases expression3
sodium arseniteaffects cotreatment, decreases expression, increases abundance, increases expression3
bisphenol Sincreases expression3
Arsenicaffects cotreatment, decreases expression, increases abundance, increases expression2
Tobacco Smoke Pollutionaffects expression, increases expression2
GSK-J4increases expression1
bisphenol Fincreases expression1
2,4,6-tribromophenolincreases expression1
lasiocarpinedecreases expression1
triphenyl phosphateaffects expression1
pirinixic acidaffects binding, decreases expression, increases activity1
decabromobiphenyl etherincreases expression1
arseniteincreases reaction, affects binding1
butyraldehydeincreases expression1
perfluorooctanoic acidincreases expression1
acipimoxincreases expression1
beta-methylcholineaffects expression1
CGP 52608affects binding, increases reaction1
bisphenol Bincreases expression1
2,2’,4,4’-tetrabromodiphenyl etherincreases expression1
bisphenol AFincreases expression1
Aspirindecreases expression1
Atrazineincreases expression1
Benzo(a)pyreneincreases expression1
Cannabidioldecreases expression1
Clozapinedecreases expression1
Cuprizonedecreases expression1
Furaldehydeaffects cotreatment, affects localization, increases expression1
Isoniazidincreases expression1
Ivermectindecreases expression1

ChEMBL screening assays

1 unique, capped per target: 1 binding

Representative assays (with source publication via chembl_document):

Assay IDTypeDescriptionSource paper
CHEMBL5651287BindingBinding affinity to human DLST incubated for 45 mins by Kinobead based pull down assayNVP-BHG712: Effects of Regioisomers on the Affinity and Selectivity toward the EPHrin Family. — *ChemMedChem*

Clinical trials (associated diseases)

Via MONDO — disease-level, not drug-specific.

2 trials:

NCTPhaseStatusTitle
NCT05257005Not specifiedUNKNOWNNatural History Study of Pyruvate Dehydrogenase Deficiency
NCT03050268Not specifiedRECRUITINGFamilial Investigations of Childhood Cancer Predisposition

Predicted chemistry — Sugi Predict

The predicted patent-compound landscape for DLST across ~30M SureChEMBL compounds — explore on Sugi Predict.