EIF2D

gene
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Also known as LGTN

Summary

EIF2D (eukaryotic translation initiation factor 2D, HGNC:6583) is a protein-coding gene on chromosome 1q32.1, encoding Eukaryotic translation initiation factor 2D (P41214). Translation initiation factor that is able to deliver tRNA to the P-site of the eukaryotic ribosome in a GTP-independent manner.

This gene encodes a translation initiation factor involved in the recruitment and delivery of aminoacyl-tRNAs to the P-site of the eukaryotic ribosome in a GTP-independent manner. This gene was previously referred to as ligatin, but is now known to localize to the cytoplasm and localize and function with translation factors. Multiple transcript variants encoding different isoforms have been found for this gene.

Source: NCBI Gene 1939 — RefSeq curated summary.

At a glance

  • GWAS associations: 1
  • Clinical variants (ClinVar): 124 total
  • MANE Select transcript: NM_006893

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:6583
Approved symbolEIF2D
Nameeukaryotic translation initiation factor 2D
Location1q32.1
Locus typegene with protein product
StatusApproved
AliasesLGTN
Ensembl geneENSG00000143486
Ensembl biotypeprotein_coding
OMIM613709
Entrez1939

Gene structure

Transcript identifiers

Ensembl transcripts: 25 — 17 protein_coding, 3 retained_intron, 3 nonsense_mediated_decay, 2 protein_coding_CDS_not_defined

ENST00000271764, ENST00000367114, ENST00000437518, ENST00000461334, ENST00000468891, ENST00000472709, ENST00000474408, ENST00000484492, ENST00000613435, ENST00000617960, ENST00000620382, ENST00000910991, ENST00000910992, ENST00000910993, ENST00000910994, ENST00000910995, ENST00000910996, ENST00000937103, ENST00000937104, ENST00000955145, ENST00000955146, ENST00000955147, ENST00000955148, ENST00000955149, ENST00000955150

RefSeq mRNA: 2 — MANE Select: NM_006893 NM_001201478, NM_006893

CCDS: CCDS1465, CCDS55680

Canonical transcript exons

ENST00000271764 — 15 exons

ExonStartEnd
ENSE00000960344206611184206611374
ENSE00000960346206608236206608326
ENSE00000960348206602951206603204
ENSE00001896912206591642206591845
ENSE00002386259206593619206593793
ENSE00003485651206600263206600308
ENSE00003488490206599463206599612
ENSE00003534897206599003206599092
ENSE00003569325206599733206599836
ENSE00003615350206597100206597195
ENSE00003659159206605400206605507
ENSE00003669568206602336206602453
ENSE00003672107206609376206609459
ENSE00003731489206595718206595838
ENSE00003841977206612287206612465

Expression profiles

Bgee: expression breadth ubiquitous, 281 present calls, max score 95.60.

FANTOM5 (CAGE): breadth ubiquitous, TPM avg 16.3352 / max 62.0517, expressed in 1793 samples.

FANTOM5 promoters (3 alternative TSS)

Promoter IDTPM avgSamples expressed
1707614.29101790
170751.98061248
170770.063616

Top tissues by expression

288 total, by Bgee expression score (0-100, higher = more expressed):

TissueAnatomy IDExpression scoreQuality
left ovaryUBERON:000211995.60gold quality
body of uterusUBERON:000985395.21gold quality
right ovaryUBERON:000211894.94gold quality
right uterine tubeUBERON:000130294.80gold quality
gluteal muscleUBERON:000200094.71gold quality
hindlimb stylopod muscleUBERON:000425294.60gold quality
parotid glandUBERON:000183194.49gold quality
body of pancreasUBERON:000115094.44gold quality
muscle layer of sigmoid colonUBERON:003580594.35gold quality
endocervixUBERON:000045894.12gold quality
lower esophagus muscularis layerUBERON:003583393.95gold quality
apex of heartUBERON:000209893.94gold quality
lower esophagusUBERON:001347393.93gold quality
esophagogastric junction muscularis propriaUBERON:003584193.89gold quality
tibial nerveUBERON:000132393.88gold quality
triceps brachiiUBERON:000150993.82gold quality
ovaryUBERON:000099293.74gold quality
ectocervixUBERON:001224993.67gold quality
left lobe of thyroid glandUBERON:000112093.63gold quality
body of stomachUBERON:000116193.61gold quality
gastrocnemiusUBERON:000138893.60gold quality
saliva-secreting glandUBERON:000104493.58gold quality
muscle of legUBERON:000138393.58gold quality
right lobe of thyroid glandUBERON:000111993.55gold quality
right coronary arteryUBERON:000162593.52gold quality
popliteal arteryUBERON:000225093.51gold quality
tibial arteryUBERON:000761093.51gold quality
thyroid glandUBERON:000204693.45gold quality
minor salivary glandUBERON:000183093.38gold quality
rectumUBERON:000105293.36gold quality

Single-cell (SCXA)

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

ExperimentMarker?Max mean expression
E-ANND-3yes7.13

Regulation

Is transcription factor: no

Upstream regulators (CollecTRI, top): ESR2

miRNA regulators (miRDB)

15 targeting EIF2D, top 30 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific):

miRNAMax scoreAvg scoremiRNA target_count
HSA-MIR-186-5P99.9970.833707
HSA-MIR-548AW99.9972.573559
HSA-MIR-428299.9975.366408
HSA-MIR-1468-3P99.9672.743797
HSA-MIR-450B-5P99.9271.483175
HSA-MIR-313399.8170.923506
HSA-MIR-548AJ-5P99.7871.123085
HSA-MIR-548F-5P99.7871.023093
HSA-MIR-548G-5P99.7871.123085
HSA-MIR-548X-5P99.7871.123085
HSA-MIR-320A-3P99.7769.732107
HSA-MIR-320B99.7769.732107
HSA-MIR-320C99.7769.732107
HSA-MIR-320D99.7769.732107
HSA-MIR-442999.7769.622111

Literature-anchored findings (GeneRIF, showing 7)

  • Data suggest that neither eIF2A nor eIF2D are involved in the translation of this Sindbis virus subgenomic mRNA (sgmRNA) bearing non-AUG codons (PMID:28240315)
  • Reinitiation complexes involving initiation factors eIF2D, MCT-1, and DENR controls the translation of a large fraction of mammalian cellular mRNAs. (PMID:28732596)
  • a novel uORF-based regulatory mechanism that is employed under conditions of hyperosmotic stress by at least two human mRNAs, coding for translation reinitiation/recycling factor eIF2D and E3 ubiquitin ligase MDM2. This novel mode of translational control selectively downregulates their expression and requires as few as one uORF. (PMID:30419262)
  • this is the first report which confirms the presence of ligatin and fibulin-7 in human aqueous humor, quantified their differential expression, and indicated the possibility of their involvement in the maintenance of the trabecular meshwork structure in glaucoma progression. (PMID:30958601)
  • We observed a positive correlation trend between EIF2D mRNA levels and years of schizophrenia (SZ) disease (p=0.0794; r=0.35). We found a trend of an increase in the expression levels of EIF2D (p=0.0634) in patients suffering from the disease more than 10years compared with the SZ patients from the other subgroup . (PMID:31078689)
  • The enterovirus genome can be translated in an IRES-independent manner that requires the initiation factors eIF2A/eIF2D. (PMID:36689548)
  • To initiate or not to initiate: A critical assessment of eIF2A, eIF2D, and MCT-1.DENR to deliver initiator tRNA to ribosomes. (PMID:38433101)

Cross-species orthologs

5 orthologs

OrganismSymbolGene ID
danio_rerioeif2dENSDARG00000012929
mus_musculusEif2dENSMUSG00000026427
rattus_norvegicusEif2dENSRNOG00000004910
drosophila_melanogastereIF2DFBGN0041588
caenorhabditis_elegansWBGENE00016113

Protein

Protein identifiers

Eukaryotic translation initiation factor 2DP41214 (reviewed: P41214)

Alternative names: Hepatocellular carcinoma-associated antigen 56, Ligatin

All UniProt accessions (5): P41214, A0A087WVB6, A0A087X1L6, A0A087X202, Q5SY38

UniProt curated annotations — full annotation on UniProt →

Function. Translation initiation factor that is able to deliver tRNA to the P-site of the eukaryotic ribosome in a GTP-independent manner. The binding of Met-tRNA(I) occurs after the AUG codon finds its position in the P-site of 40S ribosomes, the situation that takes place during initiation complex formation on some specific RNAs. Its activity in tRNA binding with 40S subunits does not require the presence of the aminoacyl moiety. Possesses the unique ability to deliver non-Met (elongator) tRNAs into the P-site of the 40S subunit. In addition to its role in initiation, can promote release of deacylated tRNA and mRNA from recycled 40S subunits following ABCE1-mediated dissociation of post-termination ribosomal complexes into subunits.

Subcellular location. Cytoplasm.

Similarity. Belongs to the eIF2D family.

Isoforms (2)

UniProt IDNamesCanonical?
P41214-11yes
P41214-22

RefSeq proteins (2): NP_001188407, NP_008824* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR001950SUI1Domain
IPR002478PUADomain
IPR003121SWIB_MDM2_domainDomain
IPR015947PUA-like_sfHomologous_superfamily
IPR036877SUI1_dom_sfHomologous_superfamily
IPR036885SWIB_MDM2_dom_sfHomologous_superfamily
IPR039757EIF2DFamily
IPR039759eIF2D_SUI1Domain
IPR041366Pre-PUADomain
IPR048247eIF2D_NDomain
IPR048248PUA_eIF2d-likeDomain
IPR057429WH_eIF2DDomain
IPR058886SWIB_eIF2DDomain

Pfam: PF01253, PF17832, PF25304, PF26291, PF26292

UniProt features (41 total): strand 11, helix 11, modified residue 4, sequence conflict 4, domain 3, turn 2, compositionally biased region 2, chain 1, splice variant 1, sequence variant 1, region of interest 1

Structure

Experimental structures (PDB)

3 structures.

PDBMethodResolution (Å)
5W2FX-RAY DIFFRACTION1.4
5OA9X-RAY DIFFRACTION1.8
5OA3ELECTRON MICROSCOPY4.2

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-P41214-F176.230.31

Functional residue map

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

Post-translational modifications (4): 361, 1, 237, 254

Function

Pathways and Gene Ontology

Reactome pathways

0 pathways

MSigDB gene sets: 186 (showing top): GOBP_CYTOPLASMIC_TRANSLATION, GOBP_INTRACELLULAR_PROTEIN_TRANSPORT, GOBP_TRANSLATIONAL_INITIATION, GOMF_TRANSLATION_INITIATION_FACTOR_ACTIVITY, GOBP_TRANSLATION, NIKOLSKY_BREAST_CANCER_1Q32_AMPLICON, GOBP_FORMATION_OF_TRANSLATION_PREINITIATION_COMPLEX, GOBP_CYTOPLASMIC_TRANSLATIONAL_INITIATION, GOBP_PROTEIN_RNA_COMPLEX_ORGANIZATION, GOBP_RIBONUCLEOPROTEIN_COMPLEX_BIOGENESIS, GOBP_ORGANELLE_DISASSEMBLY, CASTELLANO_HRAS_AND_NRAS_TARGETS_UP, HATADA_METHYLATED_IN_LUNG_CANCER_UP, CHENG_RESPONSE_TO_NICKEL_ACETATE, GOBP_VIRAL_GENE_EXPRESSION

GO Biological Process (7): formation of translation preinitiation complex (GO:0001731), intracellular protein transport (GO:0006886), ribosome disassembly (GO:0032790), IRES-dependent viral translational initiation (GO:0075522), translation (GO:0006412), translational initiation (GO:0006413), protein-containing complex organization (GO:0043933)

GO Molecular Function (3): RNA binding (GO:0003723), translation initiation factor activity (GO:0003743), signaling receptor activity (GO:0038023)

GO Cellular Component (3): cytoplasm (GO:0005737), cytosol (GO:0005829), nuclear body (GO:0016604)

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
translational initiation2
cellular anatomical structure2
cytoplasmic translational initiation1
protein-RNA complex assembly1
intracellular protein localization1
protein transport1
intracellular transport1
organelle disassembly1
viral process1
viral translation1
peptidyltransferase activity1
translational elongation1
translational termination1
macromolecule biosynthetic process1
protein metabolic process1
protein biosynthetic process1
formation of translation initiation ternary complex1
translation1
metabolic process1
cellular component organization1
nucleic acid binding1
translation factor activity1
molecular transducer activity1
intracellular anatomical structure1
cytoplasm1
nucleoplasm1
intracellular membraneless organelle1

Protein interactions and networks

STRING

1140 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
EIF2DEIF1P41567974
EIF2DDENRO43583884
EIF2DEIF5BO60841813
EIF2DEIF5P55010720
EIF2DABCE1P61221715
EIF2DEIF3JO75822585
EIF2DEIF4A1P04765543
EIF2DEIF4A2Q14240519
EIF2DRPS25P25111505
EIF2DEIF4G1Q04637488
EIF2DEIF4BP23588481
EIF2DMCTS1Q9ULC4469
EIF2DMRRFQ96E11455
EIF2DEIF4HQ15056449
EIF2DEIF3BP55884437

IntAct

29 interactions, top by confidence:

ABTypeScore
CFTRESYT2psi-mi:“MI:2364”(proximity)0.710
PSMC3PSMD12psi-mi:“MI:0914”(association)0.640
DDX21MED19psi-mi:“MI:2364”(proximity)0.480
EIF2DHSPA8psi-mi:“MI:0915”(physical association)0.400
MKI67ARHGAP10psi-mi:“MI:0914”(association)0.350
CUL3PXDNLpsi-mi:“MI:0914”(association)0.350
PSMC3psi-mi:“MI:0914”(association)0.350
PLEKHG3psi-mi:“MI:0914”(association)0.350
CSNK2A1RPS3Apsi-mi:“MI:0914”(association)0.350
DNAJC18PAPSS2psi-mi:“MI:0914”(association)0.350
EIF3GEIF3CLpsi-mi:“MI:0914”(association)0.350
PSPC1MCRIP1psi-mi:“MI:0914”(association)0.350
RACK1RPS3Apsi-mi:“MI:0914”(association)0.350
RPS11SCAMP1psi-mi:“MI:0914”(association)0.350
RPS16MCRIP1psi-mi:“MI:0914”(association)0.350
C11orf87KLRG2psi-mi:“MI:0914”(association)0.350
SLC22A4RTL8Cpsi-mi:“MI:0914”(association)0.350
PRPS2SMCHD1psi-mi:“MI:0914”(association)0.350
GMPPBPRMT3psi-mi:“MI:0914”(association)0.350
CDC5Lpsi-mi:“MI:0914”(association)0.350
EFTUD2NACApsi-mi:“MI:2364”(proximity)0.270
SBDSRPSA2psi-mi:“MI:2364”(proximity)0.270
ZC3H11AESYT2psi-mi:“MI:2364”(proximity)0.270
ZNF800MED19psi-mi:“MI:2364”(proximity)0.270
DDX6RPSA2psi-mi:“MI:2364”(proximity)0.270
EIF2DRAD51psi-mi:“MI:0915”(physical association)0.000

BioGRID (71): EIF2D (Affinity Capture-MS), EIF2D (Affinity Capture-MS), CALU (Co-fractionation), CKAP5 (Co-fractionation), EIF1 (Co-fractionation), EIF2D (Co-fractionation), EIF2D (Co-fractionation), EIF2D (Co-fractionation), EIF2D (Co-fractionation), EIF2D (Co-fractionation), EIF2D (Co-fractionation), HARS (Co-fractionation), HNRNPR (Co-fractionation), NAA38 (Co-fractionation), RCC2 (Co-fractionation)

ESM2 similar proteins: A0A1L1SUL6, F1LQY6, O35465, O43379, O75293, O88910, O88954, P0C0T1, P21964, P22339, P41214, P50747, Q13368, Q13572, Q14318, Q16342, Q1HAQ0, Q28955, Q2T9Z1, Q3B7U9, Q3TFD2, Q3TMX7, Q496Y0, Q4AC99, Q5BIM1, Q5E9A5, Q5R812, Q5RA63, Q5SZD4, Q64311, Q6DC64, Q6P5G6, Q6PFY8, Q80YV4, Q8BNV1, Q8BYN3, Q8NFZ0, Q8R1C6, Q8R1T1, Q8TCU6

Diamond homologs: P0CL18, P41214, P87313, Q58CR3, Q5PPG7, Q5RA63, Q61211, A0A3B3IRV3, P89886, Q2KIE4, Q4G009, Q58827, Q5PPY1, Q5ZI42, Q6DER1, Q6NRJ7, Q75AA8, Q7ZV34, Q86KL4, Q9CQ21, Q9DB27, Q9ULC4, Q9W445

SIGNOR signaling

0 interactions.

Enriched among interaction partners

Reactome pathways and GO biological processes over-represented among this gene’s 41 IntAct physical interaction partners (hypergeometric vs the genome-wide background, BH-FDR, gene-set size 15–500, ranked by fold). A functional readout of the neighbourhood — distinct from this gene’s own memberships above, and biased toward well-studied / hub proteins, so read it as themes rather than proof.

Reactome pathways:

PathwayPartnersFoldFDR
Regulation of expression of SLITs and ROBOs511.9×2e-03

GO biological processes:

GO termPartnersFoldFDR
cytoplasmic translation524.4×5e-04

Disease & clinical

Clinical variants and AI predictions

ClinVar

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

ClassificationCount (floor)
Pathogenic0
Likely pathogenic0
Uncertain significance91
Likely benign6
Benign0

Top pathogenic / likely-pathogenic (0)

SpliceAI

2515 predictions. Top by Δscore:

VariantEffectΔscore
1:206583257:T:TAacceptor_gain1.0000
1:206583265:CCAG:Cacceptor_loss1.0000
1:206583266:CA:Cacceptor_loss1.0000
1:206583267:A:AGacceptor_gain1.0000
1:206583267:AGAAT:Aacceptor_gain1.0000
1:206583268:G:GGacceptor_gain1.0000
1:206583268:GA:Gacceptor_gain1.0000
1:206583268:GAA:Gacceptor_gain1.0000
1:206583268:GAAT:Gacceptor_gain1.0000
1:206583268:GAATG:Gacceptor_gain1.0000
1:206583375:AACTG:Adonor_gain1.0000
1:206583376:ACTG:Adonor_gain1.0000
1:206583376:ACTGG:Adonor_loss1.0000
1:206583377:CTG:Cdonor_gain1.0000
1:206583378:TG:Tdonor_gain1.0000
1:206583378:TGG:Tdonor_loss1.0000
1:206583379:GG:Gdonor_gain1.0000
1:206583379:GGTAA:Gdonor_loss1.0000
1:206583380:G:GGdonor_gain1.0000
1:206584681:CAAGG:Cdonor_loss1.0000
1:206584682:AAGG:Adonor_loss1.0000
1:206584684:GGTAG:Gdonor_loss1.0000
1:206584685:G:Adonor_loss1.0000
1:206584686:T:Gdonor_loss1.0000
1:206585178:A:AGacceptor_gain1.0000
1:206585179:G:GGacceptor_gain1.0000
1:206585179:GT:Gacceptor_gain1.0000
1:206586802:A:AGacceptor_gain1.0000
1:206586803:C:Gacceptor_gain1.0000
1:206586804:A:AGacceptor_gain1.0000

AlphaMissense

3812 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
1:206600281:C:AK310N0.993
1:206600281:C:GK310N0.993
1:206611371:T:AR20S0.993
1:206611371:T:GR20S0.993
1:206593783:A:TV507D0.991
1:206611372:C:GR20T0.989
1:206605497:C:GA145P0.988
1:206609448:A:GW87R0.988
1:206609448:A:TW87R0.988
1:206599823:A:GL321P0.987
1:206611366:A:GL22P0.987
1:206605410:C:GD174H0.986
1:206605496:G:TA145D0.986
1:206612337:A:CF2L0.986
1:206612337:A:TF2L0.986
1:206612339:A:GF2L0.986
1:206599505:A:TV387D0.983
1:206600283:T:CK310E0.983
1:206608323:A:GL112S0.983
1:206612298:C:AK15N0.983
1:206612298:C:GK15N0.983
1:206605401:A:GW177R0.982
1:206605401:A:TW177R0.982
1:206602368:G:CS290R0.981
1:206602368:G:TS290R0.981
1:206602370:T:GS290R0.981
1:206605490:C:TG147E0.981
1:206605436:C:TG165D0.980
1:206597190:A:TV433E0.979
1:206611186:G:TT82K0.979

dbSNP variants (sampled 300 via entrez): RS1000085991 (1:206577586 C>T), RS1000146813 (1:206576059 G>A), RS1000184971 (1:206570988 T>A), RS1000261220 (1:206613354 G>A,C,T), RS1000315833 (1:206607032 T>C), RS1000371563 (1:206607295 C>T), RS1000541046 (1:206577378 T>C), RS1000629849 (1:206614368 A>C,G), RS1000696574 (1:206612746 T>A,C), RS1000704584 (1:206608797 A>C), RS1000991337 (1:206602659 C>T), RS1001040682 (1:206595523 G>A), RS1001230082 (1:206583929 G>A), RS1001255915 (1:206577989 G>A), RS1001307830 (1:206571703 G>A)

Disease associations

OMIM: gene MIM:613709 | disease phenotypes:

GenCC curated gene-disease

Mondo (0):

Orphanet (0):

HPO phenotypes

0 total (0 of 0 shown, HPO-id order):

GWAS associations

1 associations (top):

StudyTraitp-value
GCST010121_3Ceramide levels (C24:0)9.000000e-06

Drugs & pharmacology

Drug and pharmacology data

Is drug target: no

PharmGKB: 1 entry (VIP=true, CPIC=false)

CTD chemical–gene interactions

26 total (human), top 26 by PubMed support.

ChemicalActions (top 5)PubMed papers
sodium arseniteincreases abundance, affects binding, decreases reaction, increases reaction, decreases expression4
Valproic Acidaffects expression, decreases expression4
methacrylaldehydeaffects cotreatment, increases oxidation, increases abundance2
Acroleinaffects cotreatment, increases oxidation, increases abundance2
Ozoneaffects cotreatment, increases oxidation, increases abundance2
aristolochic acid Iincreases expression1
methylmercuric chloridedecreases expression1
triphenyl phosphateaffects expression1
alpha-pineneaffects cotreatment, increases oxidation, increases abundance1
bisphenol Aaffects expression1
beta-lapachoneincreases expression1
arseniteaffects binding, increases reaction1
perfluorooctane sulfonic acidincreases expression1
jinfukangaffects cotreatment, increases expression1
(+)-JQ1 compounddecreases expression1
Air Pollutantsaffects cotreatment, increases abundance, increases oxidation1
Arsenicdecreases expression, increases abundance1
Cisplatinaffects cotreatment, increases expression1
Enzyme Inhibitorsdecreases activity, increases O-linked glycosylation1
Ribonucleotidesaffects binding, decreases reaction1
Rotenonedecreases expression1
Smokedecreases expression1
Tretinoindecreases expression1
Aflatoxin B1decreases methylation1
Okadaic Aciddecreases expression1
Volatile Organic Compoundsaffects cotreatment, increases oxidation1

Cellosaurus cell lines

5 cell lines: 4 cancer cell line, 1 transformed cell line

First 10 cell lines (id-ordered, not curated):

CellosaurusNameCategorySex
CVCL_B2WEAbcam HEK293T EIF2D KOTransformed cell lineFemale
CVCL_SL72HAP1 EIF2D (-) 1Cancer cell lineMale
CVCL_SL73HAP1 EIF2D (-) 2Cancer cell lineMale
CVCL_SL74HAP1 EIF2D (-) 3Cancer cell lineMale
CVCL_SL75HAP1 EIF2D (-) 4Cancer cell lineMale

Clinical trials (associated diseases)

0 trials via MONDO — disease-level, not drug-specific.

No linked Atlas pages yet — the cross-entity mesh grows as the corpus expands.