LDB1
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Also known as NLICLIM2
Summary
LDB1 (LIM domain binding 1, HGNC:6532) is a protein-coding gene on chromosome 10q24.32, encoding LIM domain-binding protein 1 (Q86U70). Binds to the LIM domain of a wide variety of LIM domain-containing transcription factors.
Enables LIM domain binding activity; RNA polymerase II-specific DNA-binding transcription factor binding activity; and enzyme binding activity. Involved in negative regulation of DNA-templated transcription and positive regulation of transcription by RNA polymerase II. Located in chromatin. Part of beta-catenin-TCF complex.
Source: NCBI Gene 8861 — RefSeq curated summary.
At a glance
- Gene–disease (curated): congenital hydrocephalus (Strong, GenCC)
- GWAS associations: 4
- Clinical variants (ClinVar): 47 total
- Cancer driver (intOGen): loss-of-function (tumor-suppressor-like) across 2 cancer types
- MANE Select transcript:
NM_001113407
Identifiers
Gene identifiers
| Field | Value |
|---|---|
| HGNC ID | HGNC:6532 |
| Approved symbol | LDB1 |
| Name | LIM domain binding 1 |
| Location | 10q24.32 |
| Locus type | gene with protein product |
| Status | Approved |
| Aliases | NLI, CLIM2 |
| Ensembl gene | ENSG00000198728 |
| Ensembl biotype | protein_coding |
| OMIM | 603451 |
| Entrez | 8861 |
Gene structure
Transcript identifiers
Ensembl transcripts: 4 — 3 protein_coding, 1 protein_coding_CDS_not_defined
ENST00000361198, ENST00000425280, ENST00000461873, ENST00000673968
RefSeq mRNA: 3 — MANE Select: NM_001113407
NM_001113407, NM_001321612, NM_003893
CCDS: CCDS44472, CCDS7528, CCDS91327
Canonical transcript exons
ENST00000673968 — 11 exons
| Exon | Start | End |
|---|---|---|
| ENSE00000987601 | 102110529 | 102110701 |
| ENSE00000987602 | 102109921 | 102110043 |
| ENSE00000987603 | 102109600 | 102109683 |
| ENSE00000987604 | 102109384 | 102109507 |
| ENSE00000987605 | 102109029 | 102109177 |
| ENSE00001451519 | 102106489 | 102108323 |
| ENSE00001835858 | 102120086 | 102120368 |
| ENSE00003473743 | 102111434 | 102111536 |
| ENSE00003560015 | 102111256 | 102111300 |
| ENSE00003568764 | 102110869 | 102110971 |
| ENSE00003626159 | 102111069 | 102111144 |
Expression profiles
Bgee: expression breadth ubiquitous, 236 present calls, max score 98.62.
FANTOM5 (CAGE): breadth ubiquitous, TPM avg 45.4361 / max 572.9398, expressed in 1825 samples.
FANTOM5 promoters (12 alternative TSS)
| Promoter ID | TPM avg | Samples expressed |
|---|---|---|
| 111132 | 17.6757 | 1789 |
| 111129 | 8.0103 | 1649 |
| 111131 | 6.6652 | 1444 |
| 111134 | 5.9589 | 1711 |
| 111133 | 2.7120 | 1319 |
| 111127 | 1.9284 | 1045 |
| 111135 | 0.7665 | 419 |
| 111136 | 0.6232 | 281 |
| 111138 | 0.5640 | 321 |
| 111126 | 0.2252 | 80 |
Top tissues by expression
278 total, by Bgee expression score (0-100, higher = more expressed):
| Tissue | Anatomy ID | Expression score | Quality |
|---|---|---|---|
| right uterine tube | UBERON:0001302 | 98.62 | gold quality |
| ganglionic eminence | UBERON:0004023 | 98.34 | gold quality |
| left ovary | UBERON:0002119 | 98.26 | gold quality |
| skin of leg | UBERON:0001511 | 97.95 | gold quality |
| mucosa of stomach | UBERON:0001199 | 97.93 | gold quality |
| skin of abdomen | UBERON:0001416 | 97.92 | gold quality |
| right ovary | UBERON:0002118 | 97.89 | gold quality |
| endocervix | UBERON:0000458 | 97.81 | gold quality |
| sural nerve | UBERON:0015488 | 97.80 | gold quality |
| cortical plate | UBERON:0005343 | 97.66 | gold quality |
| body of uterus | UBERON:0009853 | 97.44 | gold quality |
| muscle layer of sigmoid colon | UBERON:0035805 | 97.20 | gold quality |
| ectocervix | UBERON:0012249 | 97.17 | gold quality |
| lower esophagus | UBERON:0013473 | 97.06 | gold quality |
| lower esophagus muscularis layer | UBERON:0035833 | 97.06 | gold quality |
| esophagogastric junction muscularis propria | UBERON:0035841 | 97.02 | gold quality |
| stromal cell of endometrium | CL:0002255 | 96.86 | gold quality |
| granulocyte | CL:0000094 | 96.84 | gold quality |
| adenohypophysis | UBERON:0002196 | 96.72 | gold quality |
| left uterine tube | UBERON:0001303 | 96.41 | gold quality |
| apex of heart | UBERON:0002098 | 96.23 | gold quality |
| right lobe of thyroid gland | UBERON:0001119 | 96.19 | gold quality |
| left lobe of thyroid gland | UBERON:0001120 | 96.10 | gold quality |
| metanephros cortex | UBERON:0010533 | 96.08 | gold quality |
| minor salivary gland | UBERON:0001830 | 96.03 | gold quality |
| right coronary artery | UBERON:0001625 | 95.91 | gold quality |
| gall bladder | UBERON:0002110 | 95.74 | gold quality |
| ventricular zone | UBERON:0003053 | 95.72 | gold quality |
| lower esophagus mucosa | UBERON:0035834 | 95.67 | gold quality |
| tibial nerve | UBERON:0001323 | 95.57 | gold quality |
Single-cell (SCXA)
Detected in 3 experiment(s), a significant marker in 3.
| Experiment | Marker? | Max mean expression |
|---|---|---|
| E-MTAB-9543 | yes | 1457.31 |
| E-HCAD-6 | yes | 43.86 |
| E-ANND-3 | yes | 6.95 |
Regulation
Is transcription factor: no
miRNA regulators (miRDB)
141 targeting LDB1, top 30 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific):
| miRNA | Max score | Avg score | miRNA target_count |
|---|---|---|---|
| HSA-MIR-6798-5P | 100.00 | 65.77 | 699 |
| HSA-MIR-3163 | 100.00 | 77.23 | 8605 |
| HSA-MIR-4795-3P | 100.00 | 74.62 | 4024 |
| HSA-MIR-126-5P | 100.00 | 72.71 | 3180 |
| HSA-MIR-656-3P | 100.00 | 72.15 | 2788 |
| HSA-MIR-5692B | 100.00 | 71.32 | 2622 |
| HSA-MIR-5692C | 100.00 | 71.32 | 2622 |
| HSA-MIR-6077 | 99.99 | 68.04 | 2299 |
| HSA-MIR-4500 | 99.99 | 72.72 | 2367 |
| HSA-MIR-6870-5P | 99.99 | 68.55 | 2115 |
| HSA-MIR-4534 | 99.99 | 66.58 | 1907 |
| HSA-MIR-3667-3P | 99.99 | 67.17 | 1636 |
| HSA-LET-7A-5P | 99.98 | 72.29 | 1790 |
| HSA-LET-7B-5P | 99.98 | 72.31 | 1790 |
| HSA-LET-7C-5P | 99.98 | 72.29 | 1790 |
| HSA-LET-7E-5P | 99.98 | 72.29 | 1790 |
| HSA-LET-7F-5P | 99.98 | 72.56 | 1784 |
| HSA-LET-7G-5P | 99.98 | 72.37 | 1784 |
| HSA-LET-7I-5P | 99.98 | 72.37 | 1788 |
| HSA-MIR-98-5P | 99.98 | 72.33 | 1787 |
| HSA-MIR-548AN | 99.97 | 70.91 | 2817 |
| HSA-MIR-4723-5P | 99.97 | 68.70 | 2034 |
| HSA-MIR-5698 | 99.97 | 68.49 | 2029 |
| HSA-MIR-7111-5P | 99.97 | 68.48 | 2062 |
| HSA-MIR-548AJ-3P | 99.96 | 73.38 | 5345 |
| HSA-MIR-548X-3P | 99.96 | 73.38 | 5345 |
| HSA-MIR-4725-3P | 99.96 | 69.53 | 2520 |
| HSA-MIR-6780B-5P | 99.96 | 69.60 | 2562 |
| HSA-MIR-4487 | 99.96 | 64.58 | 1252 |
| HSA-LET-7D-5P | 99.96 | 71.76 | 1632 |
Literature-anchored findings (GeneRIF, showing 18)
- 1H, 15N and 13C assignments of FLIN4, an intramolecular LMO4:ldb1 complex (PMID:12153047)
- Ssdp proteins interact with the LIM-domain-binding protein Ldb1 to regulate development (PMID:12381786)
- characterize the assembly of a five-component complex containing TAL1, LMO2, Ldb1, E12, and DNA. The bHLH domains of TAL1 and E12 alone primarily formed helical homodimers, but together formed heterodimers, to which LMO2 bound with high affinity (PMID:17910069)
- Although the LIM interaction domain of Ldb1 (Ldb1(LID)) and Isl1(LBD) share low levels of sequence homology, X-ray and NMR structures reveal that they bind Lhx3 in an identical manner, that is, Isl1(LBD) mimics Ldb1(LID). (PMID:18583962)
- Expression of LDB1 (LIM-domain-binding 1) protein in which Lys134 is replaced with arginine leads to enhanced expression of the mutant protein compared with the wild-type protein. (PMID:20423330)
- These studies are consistent with a model in which TIF1gamma acts to ubiquitinate LDB1 leading to degradation of LDB1 and changes in transcription of LDB1-dependent promoters. (PMID:20447379)
- We investigated NLI (Ldb1 homolog) complex occupancy and chromatin conformation of the beta-globin locus in human erythroid cells. (PMID:22010104)
- In t(8;21) leukemia cells, LDB1 functions as a component of the stable AML1-ETO-containing transcription factor complex (AETFC). The AETFC components cooperatively regulate gene expression and contribute to leukemogenesis. (PMID:23812588)
- Clim2, in a complex with LMO4, supports mammary stem cells by directly targeting the Fgfr2 promoter in basal cells to increase its expression (PMID:25079073)
- SSBP3 Interacts With Islet-1 and Ldb1 to Impact Pancreatic beta-Cell Target Genes (PMID:26495868)
- Alanine scanning mutagenesis of the LIM interaction domain of LDB1 revealed a discrete motif, R(320)LITR, required for LMO2 binding. (PMID:26598604)
- Data indicate that LIM-domain-binding protein 1 (LDB1) has a strong role in colorectal cancer (CRC) progression. (PMID:27713177)
- LDB1 maintains the terminally differentiated state of beta cells and is a component of active enhancers in both murine and human islets. (PMID:27941246)
- LDB1 dimerization supports long-range connections between enhancers and genes involved in erythropoiesis, including the beta-globin genes. Single-stranded DNA binding proteins (SSBPs) interact specifically with the LDB/Chip conserved domain (LCCD) of LDB proteins and stabilize LDBs by preventing their proteasomal degradation, thus promoting their functions in gene regulation. (PMID:31892537)
- LDB1 Enforces Stability on Direct and Indirect Oncoprotein Partners in Leukemia. (PMID:32229578)
- The Ldb1 transcriptional co-regulator is required for establishment and maintenance of the pancreatic endocrine lineage. (PMID:35881062)
- LMO2 promotes the development of AML through interaction with transcription co-regulator LDB1. (PMID:37573405)
- An intricate regulatory circuit between FLI1 and GATA1/GATA2/LDB1/ERG dictates erythroid vs. megakaryocytic differentiation. (PMID:38695236)
Cross-species orthologs
6 orthologs
| Organism | Symbol | Gene ID |
|---|---|---|
| danio_rerio | ldb1a | ENSDARG00000010137 |
| danio_rerio | ldb1b | ENSDARG00000103158 |
| mus_musculus | Ldb1 | ENSMUSG00000025223 |
| rattus_norvegicus | Ldb1 | ENSRNOG00000018468 |
| drosophila_melanogaster | Chi | FBGN0013764 |
| caenorhabditis_elegans | WBGENE00002261 |
Paralogs (1): LDB2 (ENSG00000169744)
Protein
Protein identifiers
LIM domain-binding protein 1 — Q86U70 (reviewed: Q86U70)
Alternative names: Carboxyl-terminal LIM domain-binding protein 2, LIM domain-binding factor CLIM2, Nuclear LIM interactor
All UniProt accessions (2): Q86U70, A0A6E1WJ75
UniProt curated annotations — full annotation on UniProt →
Function. Binds to the LIM domain of a wide variety of LIM domain-containing transcription factors. May regulate the transcriptional activity of LIM-containing proteins by determining specific partner interactions. Plays a role in the development of interneurons and motor neurons in cooperation with LHX3 and ISL1. Acts synergistically with LHX1/LIM1 in axis formation and activation of gene expression. Acts with LMO2 in the regulation of red blood cell development, maintaining erythroid precursors in an immature state.
Subunit / interactions. Interacts with ESR1. Forms homodimers and heterodimers. Interacts with and activates LHX1/LIM1. Interacts with the LIM domains of ISL1 and LMO2. Can assemble in a complex with LMO2 and TAL1/SCL but does not interact with TAL1/SCL directly. Strongly interacts with the LIM2 domain of LMX1A and more weakly with the LIM1 domain. Homodimerization is not required for, and does not effect, LMX1A-binding. Component of a nuclear TAL-1 complex composed at least of CBFA2T3, LDB1, TAL1 and TCF3. Interacts with LHX6 and LHX9. At neuronal promoters, forms a complex with LHX3 involved in the specification of interneurons, in motor neurons, it is displaced by ISL1 to form a ternary complex in which ISL1 contacts both LHX3 and LDB1. Interacts with SLK; leading to negatively regulate SLK kinase activity. Interacts with YWHAZ. Interacts with PRDM1/BLIMP1. Interacts with LMO4. Interacts with RLIM/RNF12; the interaction inhibits the ubiquitination of LMO proteins.
Subcellular location. Nucleus.
Tissue specificity. Expressed in a wide range of adult tissues including brain, heart, skeletal muscle, colon, thymus, spleen, kidney, liver, small intestine, lung and peripheral blood leukocytes.
Post-translational modifications. Ubiquitinated by RLIM/RNF12, leading to its degradation by the proteasome.
Domain organisation. The dimerization domain is located in the N-terminus.
Miscellaneous. Acts as a negative coregulator of ESR1-mediated transcription in breast cancer cells. Due to intron retention. Lacks LIM-binding domain.
Similarity. Belongs to the LDB family.
Isoforms (3)
| UniProt ID | Names | Canonical? |
|---|---|---|
| Q86U70-1 | 1 | yes |
| Q86U70-3 | 2, b | |
| Q86U70-2 | 3, a |
RefSeq proteins (3): NP_001106878, NP_001308541, NP_003884 (=MANE)
Domains & families (InterPro)
| ID | Name | Type |
|---|---|---|
| IPR029005 | LIM-bd/SEUSS | Family |
| IPR041363 | LID | Domain |
Pfam: PF01803, PF17916
UniProt features (40 total): strand 13, helix 9, modified residue 4, splice variant 3, turn 3, region of interest 2, initiator methionine 1, chain 1, sequence variant 1, mutagenesis site 1, domain 1, compositionally biased region 1
Structure
Experimental structures (PDB)
9 structures.
| PDB | Method | Resolution (Å) |
|---|---|---|
| 7OB5 | X-RAY DIFFRACTION | 1.8 |
| 7OB8 | X-RAY DIFFRACTION | 1.8 |
| 9F5B | X-RAY DIFFRACTION | 1.8 |
| 2XJY | X-RAY DIFFRACTION | 2.4 |
| 8HIB | X-RAY DIFFRACTION | 2.45 |
| 2XJZ | X-RAY DIFFRACTION | 2.8 |
| 2YPA | X-RAY DIFFRACTION | 2.8 |
| 6TYD | X-RAY DIFFRACTION | 2.8 |
| 8SSU | X-RAY DIFFRACTION | 2.89 |
Predicted structure (AlphaFold)
| Model | pLDDT | Fraction very-high |
|---|---|---|
| AF-Q86U70-F1 | 72.04 | 0.45 |
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): 2, 61, 265, 302
Mutagenesis-validated functional residues (1):
| Position | Phenotype |
|---|---|
| 245–249 | abolishes interaction with esr1. |
Function
Pathways and Gene Ontology
Reactome pathways
14 pathways
| ID | Pathway |
|---|---|
| R-HSA-8939236 | RUNX1 regulates transcription of genes involved in differentiation of HSCs |
| R-HSA-9010553 | Regulation of expression of SLITs and ROBOs |
| R-HSA-9733709 | Cardiogenesis |
| R-HSA-9752946 | Expression and translocation of olfactory receptors |
| R-HSA-1266738 | Developmental Biology |
| R-HSA-212436 | Generic Transcription Pathway |
| R-HSA-376176 | Signaling by ROBO receptors |
| R-HSA-381753 | Olfactory Signaling Pathway |
| R-HSA-422475 | Axon guidance |
| R-HSA-73857 | RNA Polymerase II Transcription |
| R-HSA-74160 | Gene expression (Transcription) |
| R-HSA-8878171 | Transcriptional regulation by RUNX1 |
| R-HSA-9675108 | Nervous system development |
| R-HSA-9709957 | Sensory Perception |
MSigDB gene sets: 300 (showing top):
GOBP_MYELOID_CELL_DIFFERENTIATION, GOBP_HEMOGLOBIN_METABOLIC_PROCESS, GOBP_CHROMOSOME_ORGANIZATION, GOBP_HINDBRAIN_DEVELOPMENT, GOBP_EPITHELIUM_DEVELOPMENT, GOBP_SOMATIC_STEM_CELL_POPULATION_MAINTENANCE, GOBP_METENCEPHALON_DEVELOPMENT, GOBP_AXIS_SPECIFICATION, GOBP_MYELOID_CELL_HOMEOSTASIS, RODRIGUES_THYROID_CARCINOMA_POORLY_DIFFERENTIATED_UP, GOBP_REGULATION_OF_PHOSPHORYLATION, GCANCTGNY_MYOD_Q6, GOBP_FOCAL_ADHESION_ASSEMBLY, GOBP_ERYTHROCYTE_HOMEOSTASIS, GOBP_CEREBELLAR_PURKINJE_CELL_LAYER_FORMATION
GO Biological Process (24): negative regulation of transcription by RNA polymerase II (GO:0000122), transcription-dependent tethering of RNA polymerase II gene DNA at nuclear periphery (GO:0000972), gastrulation with mouth forming second (GO:0001702), hair follicle development (GO:0001942), transcription by RNA polymerase II (GO:0006366), cell adhesion (GO:0007155), nervous system development (GO:0007399), anterior/posterior axis specification (GO:0009948), epithelial structure maintenance (GO:0010669), Wnt signaling pathway (GO:0016055), cerebellar Purkinje cell differentiation (GO:0021702), neuron differentiation (GO:0030182), regulation of cell migration (GO:0030334), positive regulation of transcription elongation by RNA polymerase II (GO:0032968), somatic stem cell population maintenance (GO:0035019), regulation of kinase activity (GO:0043549), negative regulation of erythrocyte differentiation (GO:0045647), positive regulation of cell adhesion (GO:0045785), negative regulation of DNA-templated transcription (GO:0045892), positive regulation of transcription by RNA polymerase II (GO:0045944), positive regulation of hemoglobin biosynthetic process (GO:0046985), regulation of focal adhesion assembly (GO:0051893), cerebellum development (GO:0021549), head development (GO:0060322)
GO Molecular Function (11): DNA binding (GO:0003677), chromatin binding (GO:0003682), transcription coregulator activity (GO:0003712), transcription coactivator activity (GO:0003713), enzyme binding (GO:0019899), LIM domain binding (GO:0030274), protein homodimerization activity (GO:0042803), RNA polymerase II-specific DNA-binding transcription factor binding (GO:0061629), DNA-binding transcription factor binding (GO:0140297), protein binding (GO:0005515), identical protein binding (GO:0042802)
GO Cellular Component (8): chromatin (GO:0000785), nucleus (GO:0005634), nucleoplasm (GO:0005654), transcription regulator complex (GO:0005667), cell leading edge (GO:0031252), protein-containing complex (GO:0032991), beta-catenin-TCF complex (GO:1990907), RNA polymerase II transcription regulator complex (GO:0090575)
Reactome top-level categories
Rollup of top-10 pathways:
| Category | Pathways |
|---|---|
| Developmental Biology | 2 |
| Transcriptional regulation by RUNX1 | 1 |
| Signaling by ROBO receptors | 1 |
| Olfactory Signaling Pathway | 1 |
| RNA Polymerase II Transcription | 1 |
| Axon guidance | 1 |
| Sensory Perception | 1 |
| Nervous system development | 1 |
| Gene expression (Transcription) | 1 |
| Generic Transcription Pathway | 1 |
GO top-level categories
Rollup of top GO terms by namespace:
| Category | Terms |
|---|---|
| cellular anatomical structure | 3 |
| regulation of transcription by RNA polymerase II | 2 |
| transcription by RNA polymerase II | 2 |
| DNA-templated transcription | 2 |
| positive regulation of DNA-templated transcription | 2 |
| binding | 2 |
| protein binding | 2 |
| negative regulation of DNA-templated transcription | 1 |
| chromosome organization | 1 |
| gastrulation | 1 |
| hair cycle process | 1 |
| anatomical structure development | 1 |
| skin epidermis development | 1 |
| cellular process | 1 |
| system development | 1 |
| axis specification | 1 |
| anterior/posterior pattern specification | 1 |
| tissue homeostasis | 1 |
| cell surface receptor signaling pathway | 1 |
| cell differentiation in hindbrain | 1 |
| cerebellar Purkinje cell layer formation | 1 |
| central nervous system neuron differentiation | 1 |
| cell differentiation | 1 |
| generation of neurons | 1 |
| cell migration | 1 |
| regulation of cell motility | 1 |
| transcription elongation by RNA polymerase II | 1 |
| positive regulation of DNA-templated transcription, elongation | 1 |
| regulation of transcription elongation by RNA polymerase II | 1 |
| positive regulation of transcription by RNA polymerase II | 1 |
| stem cell population maintenance | 1 |
| kinase activity | 1 |
| regulation of phosphorylation | 1 |
| regulation of transferase activity | 1 |
| erythrocyte differentiation | 1 |
| negative regulation of myeloid cell differentiation | 1 |
| regulation of erythrocyte differentiation | 1 |
| cell adhesion | 1 |
| regulation of cell adhesion | 1 |
| positive regulation of cellular process | 1 |
Protein interactions and networks
STRING
1464 interactions, top by confidence (×1000):
| Protein A | Protein B | Partner UniProt | Score |
|---|---|---|---|
| LDB1 | LMO2 | P25791 | 999 |
| LDB1 | GATA1 | P15976 | 996 |
| LDB1 | TAL1 | P17542 | 995 |
| LDB1 | LHX3 | Q9UBR4 | 995 |
| LDB1 | TCF3 | P15883 | 993 |
| LDB1 | GATA2 | P23769 | 988 |
| LDB1 | ISL1 | P20663 | 987 |
| LDB1 | CBFA2T3 | O75081 | 982 |
| LDB1 | LMO1 | P25800 | 973 |
| LDB1 | LYL1 | P12980 | 967 |
| LDB1 | ZFPM1 | Q8IX07 | 938 |
| LDB1 | LHX2 | P50458 | 932 |
| LDB1 | LHX1 | P48742 | 914 |
| LDB1 | LMO4 | P61968 | 905 |
| LDB1 | RUNX1 | Q01196 | 888 |
IntAct
150 interactions, top by confidence:
| A | B | Type | Score |
|---|---|---|---|
| LMO1 | ZBTB43 | psi-mi:“MI:0914”(association) | 0.830 |
| LDB1 | LHX6 | psi-mi:“MI:0915”(physical association) | 0.760 |
| LHX6 | LDB1 | psi-mi:“MI:0915”(physical association) | 0.760 |
| LMX1B | LDB1 | psi-mi:“MI:0915”(physical association) | 0.750 |
| LDB1 | LMX1B | psi-mi:“MI:0915”(physical association) | 0.750 |
| LMO2 | LDB1 | psi-mi:“MI:0915”(physical association) | 0.740 |
| SSBP3 | LDB1 | psi-mi:“MI:0915”(physical association) | 0.740 |
| LDB1 | LMO2 | psi-mi:“MI:0915”(physical association) | 0.740 |
| SSBP3 | LMX1B | psi-mi:“MI:0914”(association) | 0.740 |
| PYGO1 | BCL9 | psi-mi:“MI:0914”(association) | 0.700 |
| LDB1 | LHX8 | psi-mi:“MI:0915”(physical association) | 0.690 |
| LHX8 | LDB1 | psi-mi:“MI:0915”(physical association) | 0.690 |
| LHX8 | LDB1 | psi-mi:“MI:0914”(association) | 0.690 |
| TAL1 | TCF4 | psi-mi:“MI:0914”(association) | 0.690 |
| SYNGAP1 | LDB1 | psi-mi:“MI:0915”(physical association) | 0.680 |
| LDB1 | SYNGAP1 | psi-mi:“MI:0915”(physical association) | 0.680 |
| LMO1 | LDB1 | psi-mi:“MI:0915”(physical association) | 0.670 |
| LDB1 | LMO4 | psi-mi:“MI:0915”(physical association) | 0.670 |
| LDB1 | LMO1 | psi-mi:“MI:0915”(physical association) | 0.670 |
| LMO4 | LDB1 | psi-mi:“MI:0915”(physical association) | 0.670 |
BioGRID (231): LDB1 (Two-hybrid), LDB1 (Two-hybrid), LDB1 (Two-hybrid), LDB1 (Two-hybrid), SSBP3 (Two-hybrid), LHX6 (Two-hybrid), LHX8 (Two-hybrid), LDB1 (Affinity Capture-MS), LDB1 (Affinity Capture-MS), LDB1 (Affinity Capture-MS), LDB1 (Affinity Capture-MS), LDB1 (Affinity Capture-MS), LDB1 (Affinity Capture-MS), LDB1 (Affinity Capture-MS), LDB1 (Affinity Capture-MS)
ESM2 similar proteins: A0A3Q7JC00, A2RRV3, A2YAA5, A3B9A0, A8MQL1, B2C6R6, B5DE09, F4J077, F4JT98, F4JYG0, O22873, O42252, O48847, O73715, P70060, P70662, P93022, Q04088, Q0D3J9, Q0D5G4, Q0D9R7, Q0WPK4, Q0WVM7, Q10M00, Q4V3C1, Q64M78, Q69IL4, Q6GP15, Q6Z2W3, Q7XYY2, Q86U70, Q8RYC8, Q8W234, Q924H2, Q940A7, Q940D0, Q940I0, Q94BP0, Q94C98, Q96RN5
Diamond homologs: G5EEL0, O42252, O43679, O55203, O73715, P70060, P70662, Q1EQW7, Q6NVL6, Q86U70, Q9W676
SIGNOR signaling
2 interactions.
| A | Effect | B | Mechanism |
|---|---|---|---|
| LDB1 | “up-regulates activity” | LHX2 | binding |
| RLIM | “down-regulates quantity by destabilization” | LDB1 | polyubiquitination |
Enriched among interaction partners
Reactome pathways and GO biological processes over-represented among this gene’s 107 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:
| Pathway | Partners | Fold | FDR |
|---|---|---|---|
| Deactivation of the beta-catenin transactivating complex | 7 | 23.0× | 9e-06 |
| Gastrulation | 5 | 18.3× | 1e-03 |
| MITF-M-dependent gene expression | 5 | 12.8× | 3e-03 |
| TCF dependent signaling in response to WNT | 6 | 9.9× | 3e-03 |
| MITF-M-regulated melanocyte development | 6 | 9.7× | 3e-03 |
| Signaling by WNT | 6 | 9.5× | 3e-03 |
GO biological processes:
| GO term | Partners | Fold | FDR |
|---|---|---|---|
| neuron fate specification | 6 | 41.7× | 7e-07 |
| negative regulation of neuron differentiation | 5 | 13.5× | 2e-03 |
| somatic stem cell population maintenance | 5 | 12.3× | 2e-03 |
| anatomical structure morphogenesis | 8 | 11.0× | 6e-05 |
| neuron differentiation | 11 | 10.9× | 7e-07 |
| transcription by RNA polymerase II | 13 | 9.1× | 4e-07 |
| chromatin remodeling | 9 | 6.5× | 7e-04 |
| brain development | 7 | 5.5× | 8e-03 |
Disease & clinical
Cancer significance
From intOGen — cancer-driver classification: loss-of-function (tumor-suppressor-like) across 2 cancer types — MBL, PAST.
Clinical variants and AI predictions
ClinVar
47 variants total. Per-class counts are floors (≥ shown; pagination cap):
| Classification | Count (floor) |
|---|---|
| Pathogenic | 0 |
| Likely pathogenic | 0 |
| Uncertain significance | 35 |
| Likely benign | 2 |
| Benign | 0 |
Top pathogenic / likely-pathogenic (0)
SpliceAI
1329 predictions. Top by Δscore:
| Variant | Effect | Δscore |
|---|---|---|
| 10:102109027:A:AC | donor_gain | 1.0000 |
| 10:102109028:C:CC | donor_gain | 1.0000 |
| 10:102109028:CAGGT:C | donor_gain | 1.0000 |
| 10:102109030:GGTAC:G | donor_loss | 1.0000 |
| 10:102109031:GTACC:G | donor_loss | 1.0000 |
| 10:102109032:TA:T | donor_loss | 1.0000 |
| 10:102109033:A:C | donor_loss | 1.0000 |
| 10:102109034:C:A | donor_loss | 1.0000 |
| 10:102109034:CCTGG:C | donor_gain | 1.0000 |
| 10:102109173:CTCCG:C | acceptor_gain | 1.0000 |
| 10:102109175:CCG:C | acceptor_gain | 1.0000 |
| 10:102109176:CG:C | acceptor_gain | 1.0000 |
| 10:102109176:CGCTG:C | acceptor_gain | 1.0000 |
| 10:102109178:C:CC | acceptor_gain | 1.0000 |
| 10:102109185:G:T | acceptor_gain | 1.0000 |
| 10:102109503:CAGAG:C | acceptor_gain | 1.0000 |
| 10:102109504:AGAG:A | acceptor_gain | 1.0000 |
| 10:102109505:GAG:G | acceptor_gain | 1.0000 |
| 10:102109506:AG:A | acceptor_gain | 1.0000 |
| 10:102109506:AGCTA:A | acceptor_loss | 1.0000 |
| 10:102109507:GC:G | acceptor_loss | 1.0000 |
| 10:102109508:C:CC | acceptor_gain | 1.0000 |
| 10:102109508:CT:C | acceptor_loss | 1.0000 |
| 10:102109594:ACT:A | donor_loss | 1.0000 |
| 10:102109595:CTC:C | donor_loss | 1.0000 |
| 10:102109596:TCA:T | donor_loss | 1.0000 |
| 10:102109597:CA:C | donor_loss | 1.0000 |
| 10:102109598:A:AC | donor_gain | 1.0000 |
| 10:102109599:C:CA | donor_gain | 1.0000 |
| 10:102109599:CT:C | donor_gain | 1.0000 |
AlphaMissense
0 scored. Top likely-pathogenic:
dbSNP variants (sampled 300 via entrez): RS1000022469 (10:102114448 T>G), RS1000151858 (10:102111942 T>C,G), RS1000206814 (10:102120435 GC>G,GCC), RS1000435263 (10:102118944 T>C,G), RS1000620332 (10:102113149 T>C), RS1000635849 (10:102119367 T>C), RS1000659705 (10:102107319 C>A,T), RS1000752231 (10:102113483 G>A,T), RS1000816999 (10:102107126 C>T), RS1000909798 (10:102113510 C>A), RS1001225510 (10:102113059 A>G), RS1001290074 (10:102102143 T>C), RS1001301367 (10:102117680 C>T), RS1001315188 (10:102101930 C>A,T), RS1001416750 (10:102117480 G>T)
Disease associations
OMIM: gene MIM:603451 | disease phenotypes:
GenCC curated gene-disease
| Disease | Classification | Inheritance |
|---|---|---|
| congenital hydrocephalus | Strong | Autosomal dominant |
Mondo (1): congenital hydrocephalus (MONDO:0016349)
Orphanet (0):
HPO phenotypes
0 total (0 of 0 shown, HPO-id order):
GWAS associations
4 associations (top):
| Study | Trait | p-value |
|---|---|---|
| GCST005316_349 | Intelligence (MTAG) | 1.000000e-09 |
| GCST006269_820 | General cognitive ability | 1.000000e-08 |
| GCST007269_114 | Pulse pressure | 2.000000e-10 |
| GCST90002396_493 | Mean reticulocyte volume | 4.000000e-18 |
EFO canonical traits (3, from GWAS)
| EFO ID | Trait name |
|---|---|
| EFO:0004337 | intelligence |
| EFO:0005763 | pulse pressure measurement |
| EFO:0010701 | mean reticulocyte volume |
Drugs & pharmacology
Drug and pharmacology data
Is drug target: no
PharmGKB: 1 entry (VIP=true, CPIC=false)
CTD chemical–gene interactions
28 total (human), top 28 by PubMed support.
| Chemical | Actions (top 5) | PubMed papers |
|---|---|---|
| Valproic Acid | decreases expression, affects expression | 2 |
| aristolochic acid I | increases expression | 1 |
| 3-((6-(2-methoxyphenyl)pyrimidin-4-yl)amino)phenyl)methane sulfonamide | affects splicing | 1 |
| FR900359 | increases phosphorylation | 1 |
| TAK-243 | increases sumoylation | 1 |
| triphenyl phosphate | affects expression | 1 |
| di-n-butylphosphoric acid | affects expression | 1 |
| nutlin 3 | affects cotreatment, increases expression | 1 |
| bisphenol S | affects cotreatment, decreases expression | 1 |
| jinfukang | affects cotreatment, increases expression | 1 |
| Arsenic | affects methylation | 1 |
| Benzo(a)pyrene | decreases methylation | 1 |
| Cadmium | decreases expression, increases abundance | 1 |
| Cisplatin | affects cotreatment, increases expression | 1 |
| Dactinomycin | affects cotreatment, increases expression | 1 |
| Dexamethasone | affects cotreatment, decreases expression | 1 |
| Doxorubicin | increases expression | 1 |
| Estradiol | increases expression | 1 |
| Ethyl Methanesulfonate | increases expression | 1 |
| Formaldehyde | increases expression | 1 |
| Indomethacin | affects cotreatment, decreases expression | 1 |
| Methyl Methanesulfonate | increases expression | 1 |
| Smoke | decreases expression | 1 |
| Sulindac | increases expression | 1 |
| Urethane | increases expression | 1 |
| 1-Methyl-3-isobutylxanthine | affects cotreatment, decreases expression | 1 |
| Aflatoxin B1 | increases expression | 1 |
| Cadmium Chloride | decreases expression, increases abundance | 1 |
Cellosaurus cell lines
1 cell lines: 1 cancer cell line
First 10 cell lines (id-ordered, not curated):
| Cellosaurus | Name | Category | Sex |
|---|---|---|---|
| CVCL_B1VR | Abcam HeLa LDB1 KO | Cancer cell line | Female |
Clinical trials (associated diseases)
1 trials via MONDO — disease-level, not drug-specific.
| Trial | Phase | Status | Title |
|---|---|---|---|
| NCT06664372 | Not specified | NOT_YET_RECRUITING | Insertion of Frontal Ventricular Catheter of VP Shunt in Congenital Hydrocephalus Guided by Trans Fontanelle Ultrasound |
Related Atlas pages
- Associated diseases: congenital hydrocephalus
- Disease cohort memberships (association, not causation — diseases whose associated-gene cohort lists this gene; a subset are also under Associated diseases): congenital hydrocephalus