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Center for Computational Systems Medicine
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Fusion Gene and Fusion Protein Summary

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Fusion Amino Acid Sequences (multiple BPs and multiple gene isoforms)

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Fusion Protein Breakpoint Sequences - (for the Screening of the FusionNeoAntigens)

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Potential FusionNeoAntigens in HLA I - (netMHCpan v4.1 + deepHLApan v1.1)

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Potential FusionNeoAntigens in HLA II - (netMHCIIpan v4.1)

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Fusion Breakpoint 14 AA Peptide Structure - (RoseTTAFold)

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Filtering FusionNeoAntigens Through Checking the Interaction with HLAs in 3D - (Glide)

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Vaccine Design for the FusionNeoAntigens (RNA/protein sequences)

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Potential target of CAR-T therapy development

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Information on the samples that have these potential fusion neoantigens

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Fusion Protein Targeting Drugs - (Manual Curation)

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Fusion Protein Related diseases - (Manual Curation)

Fusion Protein:ABI2-MLLT3

Fusion Gene and Fusion Protein Summary

check button Fusion gene summary
Fusion partner gene informationFusion gene name: ABI2-MLLT3
FusionPDB ID: 464
FusionGDB2.0 ID: 464
HgeneTgene
Gene symbol

ABI2

MLLT3

Gene ID

10152

4300

Gene nameabl interactor 2MLLT3 super elongation complex subunit
SynonymsABI-2|ABI2B|AIP-1|AIP1|AblBP3|SSH3BP2|argBP1|argBPIA|argBPIBAF9|YEATS3
Cytomap

2q33.2

9p21.3

Type of geneprotein-codingprotein-coding
Descriptionabl interactor 2abelson interactor 2abl binding protein 3abl-interacting protein 1 (SH3-containing protein)abl-interactor protein 2barg protein tyrosine kinase-binding proteinarg-binding protein 1protein AF-9ALL1-fused gene from chromosome 9 proteinKMT2A/MLLT3 fusionKMT2A/MLLT3 fusion proteinYEATS domain-containing protein 3myeloid/lymphoid or mixed-lineage leukemia (trithorax homolog); translocated to, 3myeloid/lymphoid or mixed-lineage leu
Modification date2020032720200327
UniProtAcc

Q9NYB9

Main function of 5'-partner protein: FUNCTION: Regulator of actin cytoskeleton dynamics underlying cell motility and adhesion. Functions as a component of the WAVE complex, which activates actin nucleating machinery Arp2/3 to drive lamellipodia formation (PubMed:21107423). Acts as regulator and substrate of nonreceptor tyrosine kinases ABL1 and ABL2 involved in processes linked to cell growth and differentiation. Positively regulates ABL1-mediated phosphorylation of ENAH, which is required for proper polymerization of nucleated actin filaments at the leading edge (PubMed:7590236, PubMed:8649853, PubMed:10498863). Contributes to the regulation of actin assembly at the tips of neuron projections. In particular, controls dendritic spine morphogenesis and may promote dendritic spine specification toward large mushroom-type spines known as repositories of memory in the brain (By similarity). In hippocampal neurons, may mediate actin-dependent BDNF-NTRK2 early endocytic trafficking that triggers dendrite outgrowth (By similarity). Participates in ocular lens morphogenesis, likely by regulating lamellipodia-driven adherens junction formation at the epithelial cell-secondary lens fiber interface (By similarity). Also required for nascent adherens junction assembly in epithelial cells (PubMed:15572692). {ECO:0000250|UniProtKB:P62484, ECO:0000269|PubMed:10498863, ECO:0000269|PubMed:15572692, ECO:0000269|PubMed:21107423, ECO:0000269|PubMed:7590236, ECO:0000269|PubMed:8649853}.

P42568

Main function of 5'-partner protein: FUNCTION: Chromatin reader component of the super elongation complex (SEC), a complex required to increase the catalytic rate of RNA polymerase II transcription by suppressing transient pausing by the polymerase at multiple sites along the DNA (PubMed:20159561, PubMed:20471948, PubMed:25417107, PubMed:27105114, PubMed:27545619). Specifically recognizes and binds acylated histone H3, with a preference for histone H3 that is crotonylated (PubMed:25417107, PubMed:27105114, PubMed:27545619, PubMed:30374167, PubMed:30385749). Crotonylation marks active promoters and enhancers and confers resistance to transcriptional repressors (PubMed:25417107, PubMed:27105114, PubMed:27545619). Recognizes and binds histone H3 crotonylated at 'Lys-9' (H3K9cr), and with slightly lower affinity histone H3 crotonylated at 'Lys-18' (H3K18cr) (PubMed:27105114). Also recognizes and binds histone H3 acetylated and butyrylated at 'Lys-9' (H3K9ac and H3K9bu, respectively), but with lower affinity than crotonylated histone H3 (PubMed:25417107, PubMed:27105114, PubMed:30385749). In the SEC complex, MLLT3 is required to recruit the complex to crotonylated histones (PubMed:27105114, PubMed:27545619). Recruitment of the SEC complex to crotonylated histones promotes recruitment of DOT1L on active chromatin to deposit histone H3 'Lys-79' methylation (H3K79me) (PubMed:25417107). Plays a key role in hematopoietic stem cell (HSC) maintenance by preserving, rather than confering, HSC stemness (PubMed:31776511). Acts by binding to the transcription start site of active genes in HSCs and sustaining level of H3K79me2, probably by recruiting DOT1L (PubMed:31776511). {ECO:0000269|PubMed:20159561, ECO:0000269|PubMed:20471948, ECO:0000269|PubMed:25417107, ECO:0000269|PubMed:27105114, ECO:0000269|PubMed:27545619, ECO:0000269|PubMed:30374167, ECO:0000269|PubMed:30385749, ECO:0000269|PubMed:31776511}.
Ensembl transtripts involved in fusion geneENST idsENST00000261016, ENST00000261017, 
ENST00000261018, ENST00000295851, 
ENST00000422511, ENST00000424558, 
ENST00000430418, ENST00000430574, 
ENST00000355930, ENST00000429426, 
ENST00000380321, ENST00000475957, 
ENST00000380338, 
Fusion gene scores for assessment (based on all fusion genes of FusionGDB 2.0)* DoF score14 X 7 X 8=78418 X 37 X 9=5994
# samples 1735
** MAII scorelog2(17/784*10)=-2.20531890797751
possibly effective Gene in Pan-Cancer Fusion Genes (peGinPCFGs).
DoF>8 and MAII<0
log2(35/5994*10)=-4.09809225668125
possibly effective Gene in Pan-Cancer Fusion Genes (peGinPCFGs).
DoF>8 and MAII<0
Fusion gene context

PubMed: ABI2 [Title/Abstract] AND MLLT3 [Title/Abstract] AND fusion [Title/Abstract]

Fusion neoantigen context

PubMed: ABI2 [Title/Abstract] AND MLLT3 [Title/Abstract] AND neoantigen [Title/Abstract]

Most frequent breakpoint (based on all fusion genes of FusionGDB 2.0)ABI2(204281804)-MLLT3(20456784), # samples:1
Anticipated loss of major functional domain due to fusion event.ABI2-MLLT3 seems lost the major protein functional domain in Hgene partner, which is a CGC by not retaining the major functional domain in the partially deleted in-frame ORF.
ABI2-MLLT3 seems lost the major protein functional domain in Hgene partner, which is a CGC by not retaining the major functional domain in the partially deleted in-frame ORF.
ABI2-MLLT3 seems lost the major protein functional domain in Hgene partner, which is a essential gene by not retaining the major functional domain in the partially deleted in-frame ORF.
ABI2-MLLT3 seems lost the major protein functional domain in Hgene partner, which is a essential gene by not retaining the major functional domain in the partially deleted in-frame ORF.
* DoF score (Degree of Frequency) = # partners X # break points X # cancer types
** MAII score (Major Active Isofusion Index) = log2(# samples/DoF score*10)

check button Gene ontology of each fusion partner gene with evidence of Inferred from Direct Assay (IDA) from Entrez
PartnerGeneGO IDGO termPubMed ID
HgeneABI2

GO:0016601

Rac protein signal transduction

21107423

HgeneABI2

GO:0018108

peptidyl-tyrosine phosphorylation

17101133

HgeneABI2

GO:2000601

positive regulation of Arp2/3 complex-mediated actin nucleation

21107423

TgeneMLLT3

GO:0045893

positive regulation of transcription, DNA-templated

25417107|27105114

TgeneMLLT3

GO:0090090

negative regulation of canonical Wnt signaling pathway

19591803



check button Four levels of functional features of fusion genes
Go to FGviewer search page for the most frequent breakpoint (https://ccsmweb.uth.edu/FGviewer/chr2:204281804/chr9:20456784)
- FGviewer provides the online visualization of the retention search of the protein functional features across DNA, RNA, protein, and pathological levels.
- How to search
1. Put your fusion gene symbol.
2. Press the tab key until there will be shown the breakpoint information filled.
4. Go down and press 'Search' tab twice.
4. Go down to have the hyperlink of the search result.
5. Click the hyperlink.
6. See the FGviewer result for your fusion gene.
FGviewer

check buttonRetention analysis results of each fusion partner protein across 39 protein features of UniProt such as six molecule processing features, 13 region features, four site features, six amino acid modification features, two natural variation features, five experimental info features, and 3 secondary structure features, are available here.

check buttonFusion gene breakpoints across ABI2 (5'-gene)
* Click on the image to open the UCSC genome browser with custom track showing this image in a new window.
all structure

check buttonFusion gene breakpoints across MLLT3 (3'-gene)
* Click on the image to open the UCSC genome browser with custom track showing this image in a new window.
all structure


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Fusion Amino Acid Sequences


check buttonFusion information from ORFfinder translation from full-length transcript sequence from FusionPDB.
HenstTenstHgeneHchrHbpHstrandTgeneTchrTbpTstrandSeq length
(transcript)
BP loci
(transcript)
Predicted start
(transcript)
Predicted stop
(transcript)
Seq length
(amino acids)
ENST00000295851ABI2chr2204281804+ENST00000380338MLLT3chr920456784-795416622633175970
ENST00000261017ABI2chr2204281804+ENST00000380338MLLT3chr920456784-777914872023000932
ENST00000430418ABI2chr2204281804+ENST00000380338MLLT3chr920456784-76161324902837915
ENST00000424558ABI2chr2204281804+ENST00000380338MLLT3chr920456784-77601468872981964
ENST00000261016ABI2chr2204281804+ENST00000380338MLLT3chr920456784-765313613312874847
ENST00000422511ABI2chr2204281804+ENST00000380338MLLT3chr920456784-75901298312811926
ENST00000261018ABI2chr2204281804+ENST00000380338MLLT3chr920456784-7063771172284755

check buttonDeepORF prediction of the coding potential based on the fusion transcript sequence of in-frame fusion genes. DeepORF is a coding potential classifier based on convolutional neural network by comparing the real Ribo-seq data. If the no-coding score < 0.5 and coding score > 0.5, then the in-frame fusion transcript is predicted as being likely translated.
HenstTenstHgeneHchrHbpHstrandTgeneTchrTbpTstrandNo-coding scoreCoding score
ENST00000295851ENST00000380338ABI2chr2204281804+MLLT3chr920456784-0.0001114380.99988854
ENST00000261017ENST00000380338ABI2chr2204281804+MLLT3chr920456784-8.11E-050.99991894
ENST00000430418ENST00000380338ABI2chr2204281804+MLLT3chr920456784-6.90E-050.999931
ENST00000424558ENST00000380338ABI2chr2204281804+MLLT3chr920456784-9.51E-050.999905
ENST00000261016ENST00000380338ABI2chr2204281804+MLLT3chr920456784-0.0001316690.9998683
ENST00000422511ENST00000380338ABI2chr2204281804+MLLT3chr920456784-0.0001210740.9998789
ENST00000261018ENST00000380338ABI2chr2204281804+MLLT3chr920456784-0.0002469320.99975306

check button Predicted full-length fusion amino acid sequences. For individual full-length fusion transcript sequence from FusionPDB, we ran ORFfinder and chose the longest ORF among all the predicted ones.

Get the fusion protein sequences from here.

Fusion protein sequence information is available in the fasta format.
>FusionGDB ID_FusionGDB isoform ID_FGname_Hgene_Hchr_Hbp_Henst_Tgene_Tchr_Tbp_Tenst_length(fusion AA) seq_BP

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Fusion Protein Breakpoint Sequences for ABI2-MLLT3

check button +/-13 AA sequence from the breakpoints of the fusion protein sequences.
HgeneHchrHbpTgeneTchrTbpLength(fusion protein)BP in fusion proteinPeptide
ABI2chr2204281804MLLT3chr9204567841298422EDPPWAPRSYLEKVCKDPPYKVEESG
ABI2chr2204281804MLLT3chr9204567841324411EDPPWAPRSYLEKVCKDPPYKVEESG
ABI2chr2204281804MLLT3chr9204567841361343EDPPWAPRSYLEKVCKDPPYKVEESG
ABI2chr2204281804MLLT3chr9204567841468460EDPPWAPRSYLEKVCKDPPYKVEESG
ABI2chr2204281804MLLT3chr9204567841487428EDPPWAPRSYLEKVCKDPPYKVEESG
ABI2chr2204281804MLLT3chr9204567841662466EDPPWAPRSYLEKVCKDPPYKVEESG
ABI2chr2204281804MLLT3chr920456784771251EDPPWAPRSYLEKVCKDPPYKVEESG

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Potential FusionNeoAntigen Information of ABI2-MLLT3 in HLA I

check button Multiple sequence alignments of the potential FusionNeoAntigens per fusion breakpoints. If the MSA is empty, then it means that there were predicted fusion neoantigens in this fusion breakpoint, but those predicted fusion neoantigens were not across the breakpoint, which is not fusion-specific.
ABI2-MLLT3_204281804_20456784.msa

check button Potential FusionNeoAntigen Information
* We used NetMHCpan v4.1 (%rank<0.5) and deepHLApan v1.1 (immunogenic score>0.5)
Fusion geneHchrHbpTgeneTchrTbpHLA IFusionNeoAntigen peptideBinding scoreImmunogenic scoreNeoantigen start (at BP 13)Neoantigen end (at BP 13)
ABI2-MLLT3chr2204281804chr9204567841361HLA-A30:08RSYLEKVCK0.99660.7196716
ABI2-MLLT3chr2204281804chr9204567841361HLA-A30:08KVCKDPPYK0.99430.52511221
ABI2-MLLT3chr2204281804chr9204567841361HLA-A74:09RSYLEKVCK0.98160.5048716
ABI2-MLLT3chr2204281804chr9204567841361HLA-A74:11RSYLEKVCK0.98160.5048716
ABI2-MLLT3chr2204281804chr9204567841361HLA-A74:03RSYLEKVCK0.98160.5048716
ABI2-MLLT3chr2204281804chr9204567841361HLA-A30:08KVCKDPPYKV0.9720.52611222
ABI2-MLLT3chr2204281804chr9204567841361HLA-B07:12APRSYLEKV0.91260.5516514
ABI2-MLLT3chr2204281804chr9204567841361HLA-A30:01RSYLEKVCK0.99690.8541716
ABI2-MLLT3chr2204281804chr9204567841361HLA-A30:01KVCKDPPYK0.99460.66431221
ABI2-MLLT3chr2204281804chr9204567841361HLA-A74:01RSYLEKVCK0.98160.5048716
ABI2-MLLT3chr2204281804chr9204567841361HLA-B67:01APRSYLEKV0.10690.7005514
ABI2-MLLT3chr2204281804chr9204567841361HLA-A30:01KVCKDPPYKV0.97320.66471222

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Potential FusionNeoAntigen Information of ABI2-MLLT3 in HLA II

check button Multiple sequence alignments of the potential FusionNeoAntigens per fusion breakpoints. If the MSA is empty, then it means that there were predicted fusion neoantigens in this fusion breakpoint, but those predicted fusion neoantigens were not across the breakpoint, which is not fusion-specific.

check button Potential FusionNeoAntigen Information
* We used NetMHCIIpan v4.1 (%rank<0.5).
Fusion geneHchrHbpTgeneTchrTbpHLA IIFusionNeoAntigen peptideNeoantigen start (at BP 13)Neoantigen end (at BP 13)

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Fusion breakpoint peptide structures of ABI2-MLLT3

check button3D structures of the fusion breakpoint peptide of 14AA sequence that have potential fusion neoantigens
* The minimum length of the amino acid sequence in RoseTTAFold is 14AA. Here, we predicted the 14AA fusion protein breakpoint sequence not the fusion neoantigen peptide, which is shorter than 14 AA.
File nameBPseqHgeneTgeneHchrHbpTchrTbpAAlen
6968PRSYLEKVCKDPPYABI2MLLT3chr2204281804chr9204567841361

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Filtering FusionNeoAntigens Through Checking the Interaction with HLAs in 3D of ABI2-MLLT3

check buttonVirtual screening between 25 HLAs (from PDB) and FusionNeoAntigens
* We used Glide to predict the interaction between HLAs and neoantigens.
HLA allelePDB IDFile nameBPseqDocking scoreGlide score
HLA-B14:023BVN6968PRSYLEKVCKDPPY-7.15543-7.26883
HLA-B14:023BVN6968PRSYLEKVCKDPPY-4.77435-5.80965
HLA-B52:013W396968PRSYLEKVCKDPPY-6.80875-6.92215
HLA-B52:013W396968PRSYLEKVCKDPPY-4.20386-5.23916
HLA-A11:014UQ26968PRSYLEKVCKDPPY-7.5194-8.5547
HLA-A11:014UQ26968PRSYLEKVCKDPPY-6.9601-7.0735
HLA-A24:025HGA6968PRSYLEKVCKDPPY-7.52403-7.63743
HLA-A24:025HGA6968PRSYLEKVCKDPPY-5.82433-6.85963
HLA-B27:056PYJ6968PRSYLEKVCKDPPY-3.28285-4.31815
HLA-B44:053DX86968PRSYLEKVCKDPPY-5.91172-6.94702
HLA-B44:053DX86968PRSYLEKVCKDPPY-4.24346-4.35686

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Vaccine Design for the FusionNeoAntigens of ABI2-MLLT3

check button mRNA and peptide sequences of FusionNeoAntigens that have potential interaction with HLA-Is.
Fusion geneHchrHbpTchrTbpStart in +/-13AAEnd in +/-13AAFusionNeoAntigen peptide sequenceFusionNeoAntigen RNA sequence
ABI2-MLLT3chr2204281804chr9204567841221KVCKDPPYKAGGTGTGCAAAGATCCACCTTACAAAG
ABI2-MLLT3chr2204281804chr9204567841222KVCKDPPYKVAGGTGTGCAAAGATCCACCTTACAAAGTAG
ABI2-MLLT3chr2204281804chr920456784514APRSYLEKVCTCCACGTTCTTACTTGGAAAAGGTGT
ABI2-MLLT3chr2204281804chr920456784716RSYLEKVCKGTTCTTACTTGGAAAAGGTGTGCAAAG

check button mRNA and peptide sequences of FusionNeoAntigens that have potential interaction with HLA-IIs.
Fusion geneHchrHbpTchrTbpStart in +/-13AAEnd in +/-13AAFusionNeoAntigen peptideFusionNEoAntigen RNA sequence

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Information of the samples that have these potential fusion neoantigens of ABI2-MLLT3

check button These samples were reported as having these fusion breakpoints. For individual breakpoints, we checked the open reading frames considering multiple gene isoforms and chose the in-frame fusion genes only. Then, we made fusion protein sequences and predicted the fusion neoantigens. These fusion-positive samples may have these potential fusion neoantigens.
Cancer typeFusion geneHchrHbpHenstTchrTbpTenstSample
STADABI2-MLLT3chr2204281804ENST00000261016chr920456784ENST00000380338TCGA-CD-A48C-01A

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Potential target of CAR-T therapy development for ABI2-MLLT3

check button Predicted 3D structure. We used RoseTTAFold.

check buttonRetention analysis result of each fusion partner protein across 39 protein features of UniProt such as six molecule processing features, 13 region features, four site features, six amino acid modification features, two natural variation features, five experimental info features, and 3 secondary structure features. Here, to provide the retention of the transmembrane domain, we only show the protein feature retention information of those transmembrane features


* Minus value of BPloci means that the break point is located before the CDS.
- In-frame and retained 'Transmembrane'.
PartnerGeneHbpTbpENSTStrandBPexonTotalExonProtein feature loci*BPlociTotalLenProtein featureProtein feature note

check button Subcellular localization prediction of the transmembrane domain retained fusion proteins
* We used DeepLoc 1.0. The order of the X-axis of the barplot is as follows: Entry_ID, Localization, Type, Nucleus, Cytoplasm, Extracellular, Mitochondrion, Cell_membrane, Endoplasmic_reticulum, Plastid, Golgi.apparatus, Lysosome.Vacuole, Peroxisome. Y-axis is the output score of DeepLoc. Clicking the image will open a new tab with a large image.
HgeneHchrHbpHenstTgeneTchrTbpTenstDeepLoc result

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Related Drugs to ABI2-MLLT3

check button Drugs used for this fusion-positive patient.
(Manual curation of PubMed, 04-30-2022 + MyCancerGenome)
HgeneTgeneDrugSourcePMID

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Related Diseases to ABI2-MLLT3

check button Diseases that have this fusion gene.
(Manual curation of PubMed, 04-30-2022 + MyCancerGenome)
HgeneTgeneDiseaseSourcePMID

check button Diseases associated with fusion partners.
(DisGeNet 4.0)
PartnerGeneDisease IDDisease name# pubmedsSource
TgeneMLLT3C0005586Bipolar Disorder1PSYGENET