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LMO2 LIM domain only 2 [ Homo sapiens (human) ]

Gene ID: 4005, updated on 25-Nov-2025
Official Symbol
LMO2provided by HGNC
Official Full Name
LIM domain only 2provided by HGNC
Primary source
HGNC:HGNC:6642
See related
Ensembl:ENSG00000135363 MIM:180385; AllianceGenome:HGNC:6642
Gene type
protein coding
RefSeq status
REVIEWED
Organism
Homo sapiens
Lineage
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Also known as
TTG2; LMO-2; RBTN2; RHOM2; RBTNL1
Summary
LMO2 encodes a cysteine-rich, two LIM-domain protein that is required for yolk sac erythropoiesis. The LMO2 protein has a central and crucial role in hematopoietic development and is highly conserved. The LMO2 transcription start site is located approximately 25 kb downstream from the 11p13 T-cell translocation cluster (11p13 ttc), where a number T-cell acute lymphoblastic leukemia-specific translocations occur. Alternative splicing results in multiple transcript variants encoding different isoforms.[provided by RefSeq, Nov 2008]
Expression
Broad expression in bone marrow (RPKM 14.3), lymph node (RPKM 11.4) and 24 other tissues See more
Orthologs
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See LMO2 in Genome Data Viewer
Location:
11p13
Exon count:
7
Annotation release Status Assembly Chr Location
RS_2025_08 current GRCh38.p14 (GCF_000001405.40) 11 NC_000011.10 (33858576..33892076, complement)
RS_2025_08 current T2T-CHM13v2.0 (GCF_009914755.1) 11 NC_060935.1 (33995616..34029225, complement)
RS_2024_09 previous assembly GRCh37.p13 (GCF_000001405.25) 11 NC_000011.9 (33880122..33913623, complement)

Chromosome 11 - NC_000011.10Genomic Context describing neighboring genes Neighboring gene long intergenic non-protein coding RNA 2722 Neighboring gene long intergenic non-protein coding RNA 2721 Neighboring gene ATAC-STARR-seq lymphoblastoid silent region 3244 Neighboring gene ReSE screen-validated silencer GRCh37_chr11:33879525-33879698 Neighboring gene ATAC-STARR-seq lymphoblastoid silent region 3245 Neighboring gene ATAC-STARR-seq lymphoblastoid silent region 3246 Neighboring gene ATAC-STARR-seq lymphoblastoid silent region 3247 Neighboring gene ATAC-STARR-seq lymphoblastoid silent region 3248 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 4586 Neighboring gene uncharacterized LOC105376621 Neighboring gene ATAC-STARR-seq lymphoblastoid active region 4587 Neighboring gene uncharacterized LOC124902659

Go to nucleotide: Graphics FASTA GenBank

  • Project title: Tissue-specific circular RNA induction during human fetal development
  • Description: 35 human fetal samples from 6 tissues (3 - 7 replicates per tissue) collected between 10 and 20 weeks gestational time were sequenced using Illumina TruSeq Stranded Total RNA
  • BioProject: PRJNA270632
  • Publication: PMID 26076956
  • Analysis date: Mon Apr 2 22:54:59 2018

Related articles in PubMed

  1. LIM domain only 2 protein expression, LMO2 germline genetic variation, and overall survival in diffuse large B-cell lymphoma in the pre-rituximab era. Cerhan JR, et al. Leuk Lymphoma, 2012 Jun. PMID 22066713, Free PMC Article
  2. Effect of LMO2 protein expression on survival in chronic myeloid leukemia patients treated with imatinib mesylate. Sonmez M, et al. Hematology, 2009 Aug. PMID 19635185
  3. Homo-binding character of LMO2 isoforms and their both synergic and antagonistic functions in regulating hematopoietic-related target genes. Sun W, et al. J Biomed Sci, 2010 Mar 27. PMID 20346173, Free PMC Article
  4. The expression of LMO2 protein in acute B-cell and myeloid leukemia. Cobanoglu U, et al. Hematology, 2010 Jun. PMID 20557670
  5. Expression of LMO2 is associated with t(14;18)/IGH-BCL2 fusion but not BCL6 translocations in diffuse large B-cell lymphoma. Durnick DK, et al. Am J Clin Pathol, 2010 Aug. PMID 20660332

See all (157) citations in PubMed

GeneRIFs: Gene References Into Functions

What's a GeneRIF?
  1. Simulated microgravity altered the gene expression profiles and inhibited the proliferation of Kupffer cells in the early phase by downregulating LMO2 and EZH2.
    Title: Simulated microgravity altered the gene expression profiles and inhibited the proliferation of Kupffer cells in the early phase by downregulating LMO2 and EZH2.
  2. LMO2 promotes the development of AML through interaction with transcription co-regulator LDB1.
    Title: LMO2 promotes the development of AML through interaction with transcription co-regulator LDB1.
  3. Value of GCET1, HGAL (GCET2), and LMO2 in the Determination of Germinal Center Phenotype in Diffuse Large B-cell Lymphoma.
    Title: Value of GCET1, HGAL (GCET2), and LMO2 in the Determination of Germinal Center Phenotype in Diffuse Large B-cell Lymphoma.
  4. PAK5 is a potential target in myelodysplastic syndrome through interacting with LMO2 and GATA1.
    Title: PAK5 is a potential target in myelodysplastic syndrome through interacting with LMO2 and GATA1.
  5. Potential link of single nucleotide polymorphisms within LMO2 to the risk of cervical squamous-cell carcinoma in Chinese populations.
    Title: Potential link of single nucleotide polymorphisms within LMO2 to the risk of cervical squamous-cell carcinoma in Chinese populations.
  6. LMO2 expression is frequent in T-lymphoblastic leukemia and correlates with survival, regardless of T-cell stage.
    Title: LMO2 expression is frequent in T-lymphoblastic leukemia and correlates with survival, regardless of T-cell stage.
  7. LMO2 plays differential roles in trophoblast subtypes and is associated with preeclampsia.
    Title: LMO2 plays differential roles in trophoblast subtypes and is associated with preeclampsia.
  8. Identification of LMO2 as a new marker for acinic cell carcinoma of salivary gland.
    Title: Identification of LMO2 as a new marker for acinic cell carcinoma of salivary gland.
  9. Lack of expression of LMO2 clone SP51 identifies MYC rearrangements in aggressive large B-cell lymphomas.
    Title: Lack of expression of LMO2 clone SP51 identifies MYC rearrangements in aggressive large B-cell lymphomas.
  10. MiR-223 Suppresses Proliferation and Promotes Apoptosis of Diffuse Large B-Cell Lymphoma Cells Through Lmo2 and MAPK Signaling Pathway.
    Title: MiR-223 Suppresses Proliferation and Promotes Apoptosis of Diffuse Large B-Cell Lymphoma Cells Through Lmo2 and MAPK Signaling Pathway.
Submit: New GeneRIF Correction See all GeneRIFs (95)

Find tests for this gene in the NIH Genetic Testing Registry (GTR)

Review eQTL and phenotype association data in this region using PheGenI

EBI GWAS Catalog

Description
A genome-wide study of common SNPs and CNVs in cognitive performance in the CANTAB.
EBI GWAS Catalog

See variants in ClinVar

See studies and variants in dbVar

See Variation Viewer (GRCh37.p13)

See Variation Viewer (GRCh38)

Products Interactant Other Gene Complex Source Pubs Description

Markers

Homology

Gene Ontology Provided by GOA

Function Evidence Code Pubs
enables RNA polymerase II-specific DNA-binding transcription factor binding IPI
Inferred from Physical Interaction
more info
 PubMed 
enables bHLH transcription factor binding IPI
Inferred from Physical Interaction
more info
 PubMed 
enables identical protein binding IPI
Inferred from Physical Interaction
more info
 PubMed 
enables metal ion binding IEA
Inferred from Electronic Annotation
more info
  
enables protein binding IPI
Inferred from Physical Interaction
more info
 PubMed 
enables transcription coactivator activity IBA
Inferred from Biological aspect of Ancestor
more info
  
enables transcription coactivator activity IDA
Inferred from Direct Assay
more info
 PubMed 
enables transcription coregulator binding IPI
Inferred from Physical Interaction
more info
 PubMed 
Process Evidence Code Pubs
involved_in embryonic hemopoiesis IBA
Inferred from Biological aspect of Ancestor
more info
  
involved_in positive regulation of transcription by RNA polymerase II IBA
Inferred from Biological aspect of Ancestor
more info
  
involved_in positive regulation of transcription by RNA polymerase II IDA
Inferred from Direct Assay
more info
 PubMed 
Component Evidence Code Pubs
located_in nucleoplasm TAS
Traceable Author Statement
more info
  
is_active_in nucleus IBA
Inferred from Biological aspect of Ancestor
more info
  
located_in nucleus IEA
Inferred from Electronic Annotation
more info
  
part_of transcription regulator complex IDA
Inferred from Direct Assay
more info
 PubMed 
Preferred Names
rhombotin-2
Names
LIM domain only protein 2
T-cell translocation gene 2
T-cell translocation protein 2
cysteine-rich protein TTG-2
rhombotin-like 1

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RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

mRNA and Protein(s)

  1. NM_001142315.2 → NP_001135787.1  rhombotin-2 isoform 2

    See identical proteins and their annotated locations for NP_001135787.1

    Status: REVIEWED

    Description
    Transcript Variant: This variant (2) differs in the 5' UTR and lacks a portion of the 5' coding region, compared to variant 1. These differences cause translation initiation at a downstream in-frame ATG and an isoform (2) with a shorter N-terminus, compared to isoform 1. Variants 2 and 3 encode the same isoform (2).
    Source sequence(s)
    AC113192, BM690599, BM699014, X61118
    Consensus CDS
    CCDS44567.1
    UniProtKB/Swiss-Prot
    P25791, Q9HD58
    Conserved Domains (2) summary
    cd09384
    Location:30 → 85
    LIM1_LMO2; The first LIM domain of LMO2 (LIM domain only protein 2)
    cd09385
    Location:94 → 149
    LIM2_LMO2; The second LIM domain of LMO2 (LIM domain only protein 2)

  2. NM_001142316.2 → NP_001135788.1  rhombotin-2 isoform 2

    See identical proteins and their annotated locations for NP_001135788.1

    Status: REVIEWED

    Description
    Transcript Variant: This variant (3) differs in the 5' UTR and has an additional segment downstream of the 5' coding region, compared to variant 1. These differences cause translation initiation at a downstream in-frame ATG and an isoform (2) with a shorter N-terminus, compared to isoform 1. Variants 2 and 3 encode the same isoform (2).
    Source sequence(s)
    AC113192, AC132216, BC035607, X61118
    Consensus CDS
    CCDS44567.1
    UniProtKB/Swiss-Prot
    P25791, Q9HD58
    Related
    ENSP00000379175.3, ENST00000395833.7
    Conserved Domains (2) summary
    cd09384
    Location:30 → 85
    LIM1_LMO2; The first LIM domain of LMO2 (LIM domain only protein 2)
    cd09385
    Location:94 → 149
    LIM2_LMO2; The second LIM domain of LMO2 (LIM domain only protein 2)

  3. NM_005574.4 → NP_005565.2  rhombotin-2 isoform 1

    See identical proteins and their annotated locations for NP_005565.2

    Status: REVIEWED

    Description
    Transcript Variant: This variant (1) represents the longest transcript and encodes the longer isoform.
    Source sequence(s)
    AC113192, AC132216, CN355348, X61118
    Consensus CDS
    CCDS7888.2
    UniProtKB/Swiss-Prot
    P25791
    Related
    ENSP00000257818.2, ENST00000257818.3
    Conserved Domains (2) summary
    cd09384
    Location:99 → 154
    LIM1_LMO2; The first LIM domain of LMO2 (LIM domain only protein 2)
    cd09385
    Location:163 → 218
    LIM2_LMO2; The second LIM domain of LMO2 (LIM domain only protein 2)

RefSeqs of Annotated Genomes: GCF_000001405.40-RS_2025_08

The following sections contain reference sequences that belong to a specific genome build. Explain

Reference GRCh38.p14 Primary Assembly

Genomic

  1. NC_000011.10 Reference GRCh38.p14 Primary Assembly

    Range
    33858576..33892076 complement
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

  1. XM_017017733.2 → XP_016873222.1  rhombotin-2 isoform X2

    UniProtKB/Swiss-Prot
    P25791, Q9HD58
    Conserved Domains (2) summary
    cd09384
    Location:30 → 85
    LIM1_LMO2; The first LIM domain of LMO2 (LIM domain only protein 2)
    cd09385
    Location:94 → 149
    LIM2_LMO2; The second LIM domain of LMO2 (LIM domain only protein 2)

  2. XM_047426944.1 → XP_047282900.1  rhombotin-2 isoform X1

  3. XM_047426946.1 → XP_047282902.1  rhombotin-2 isoform X2

    UniProtKB/Swiss-Prot
    P25791, Q9HD58

  4. XM_047426945.1 → XP_047282901.1  rhombotin-2 isoform X2

    UniProtKB/Swiss-Prot
    P25791, Q9HD58

Alternate T2T-CHM13v2.0

Genomic

  1. NC_060935.1 Alternate T2T-CHM13v2.0

    Range
    33995616..34029225 complement
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

  1. XM_054368779.1 → XP_054224754.1  rhombotin-2 isoform X2

    UniProtKB/Swiss-Prot
    P25791, Q9HD58

  2. XM_054368775.1 → XP_054224750.1  rhombotin-2 isoform X1

  3. XM_054368778.1 → XP_054224753.1  rhombotin-2 isoform X2

    UniProtKB/Swiss-Prot
    P25791, Q9HD58

  4. XM_054368777.1 → XP_054224752.1  rhombotin-2 isoform X2

    UniProtKB/Swiss-Prot
    P25791, Q9HD58

  5. XM_054368774.1 → XP_054224749.1  rhombotin-2 isoform X1

  6. XM_054368776.1 → XP_054224751.1  rhombotin-2 isoform X2

    UniProtKB/Swiss-Prot
    P25791, Q9HD58
Nucleotide Protein
Heading Accession and Version
Protein Accession Links
GenPept Link UniProtKB Link
P25791.1 GenPept UniProtKB/Swiss-Prot:P25791

Gene LinkOut

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