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MYBL2 (v-myb myeloblastosis viral oncogene homolog (avian)-like 2)


Other namesB-MYB
LocusID (NCBI) 4605
Location 20q13.12
Location_base_pair Starts at 42295659 and ends at 42345136 bp from pter ( according to hg19-Feb_2009)  [Mapping]


  red boxes: untranslated regions; green boxes: coding regions.
Description 49,415 bases DNA with 14 exons.
Transcription 2,731 bases mRNA.


  R1, R2 and R3 form DNA-binding domain, TA - transactivation domain, CR - conserved region (the area of homology with c-Myb), RD - regulatory domain.
Description 704 amino acids, 93kDa protein.
R1, R2, R3 - three repeats 50 amino acids long, R2 and R3 contain HTH (helix-turn-helix) motives with unconventional turns required for DNA-binding activity, R1 serves as a DNA/protein complex stabilizer; TA contains acidic amino acids and is responsible for transcriptional activation; RD is responsible for repression of transactivation function of B-MYB.
Expression Widely expressed, expression is very high in proliferative cells, embryonic cells, haematopoietic progenitor cells.
Localisation Nucleus.
Function Transcription factor required for cell proliferation, cell cycle progression, chromosomal stability and differentiation. B-MYB knockout mice die at E4.5-E6.5 due to early developmental arrest.
Homology B-MYB is a member of MYB transcription factors family, which includes C-MYB and A-MYB, with high homology within TA and RD regions. DNA-binding domain is almost identical with that of A-MYB and C-MYB and conserved between mouse, human, chicken and drosophila.

Implicated in

Entity Neuroblastoma
Prognosis Overexpression is thought to be associated with a poor outcome of the disease.
Oncogenesis Was reported to be necessary for survival and differentiation of neuroblastoma cells.
Entity Hepatocellular carcinoma (HCC)
Oncogenesis B-MYB is reported to be a probable target of E2F1 transcription factor, which is dramatically overexpressed in HCC. There is a clear correlation between expression level of these two proteins. B-MYB overexpression in HCC causes the deregulation of apoptosis and cell cycle.
Entity Various cancer
Disease Amplification of B-MYB was described in breast carcinomas, liver carcinomas, ovarian carcinomas and in cutaneous T lymphoma. B-MYB expression was shown also to be increased in prostate and testicular malignancies. Moreover, B-MYB expression is notably increased in metastatic compared to localised prostate tumours.
The presence of B-MYB polymorphisms rs2070235 and rs11556379 is associated with a significant reduction of cancer risk.
Oncogenesis B-MYB overexpression may result in promotion of cancer cells survival and proliferation.
Polimorphisms can induce changes in protein conformation and therefore may in part deactivate B-MYB functions.

External links

HGNC (Hugo)MYBL2   7548
Entrez_Gene (NCBI)MYBL2  4605  v-myb avian myeloblastosis viral oncogene homolog-like 2
GeneCards (Weizmann)MYBL2
Ensembl (Hinxton)ENSG00000101057 [Gene_View]  chr20:42295659-42345136 [Contig_View]  MYBL2 [Vega]
ICGC DataPortalENSG00000101057
Genatlas (Paris)MYBL2
SOURCE (Princeton)NM_001278610 NM_002466
Genomic and cartography
GoldenPath (UCSC)MYBL2  -  20q13.12   chr20:42295659-42345136 +  20q13.1   [Description]    (hg19-Feb_2009)
EnsemblMYBL2 - 20q13.1 [CytoView]
Mapping of homologs : NCBIMYBL2 [Mapview]
Gene and transcription
Genbank (Entrez)AA586734 AK223482 AK303249 AK314791 BC007585
RefSeq transcript (Entrez)NM_001278610 NM_002466
RefSeq genomic (Entrez)AC_000152 NC_000020 NC_018931 NT_011362 NW_001838666 NW_004929418
Consensus coding sequences : CCDS (NCBI)MYBL2
Cluster EST : UnigeneHs.179718 [ NCBI ]
CGAP (NCI)Hs.179718
Alternative Splicing : Fast-db (Paris)GSHG0018761
Alternative Splicing GalleryENSG00000101057
Gene ExpressionMYBL2 [ NCBI-GEO ]     MYBL2 [ SEEK ]   MYBL2 [ MEM ]
Protein : pattern, domain, 3D structure
UniProt/SwissProtP10244 (Uniprot)
NextProtP10244  [Medical]
With graphics : InterProP10244
Splice isoforms : SwissVarP10244 (Swissvar)
Domaine pattern : Prosite (Expaxy)HTH_MYB (PS51294)   
Domains : Interpro (EBI)C-myb_C [organisation]   Homeodomain-like [organisation]   Myb_dom [organisation]   MYBL2 [organisation]   SANT/Myb [organisation]  
Related proteins : CluSTrP10244
Domain families : Pfam (Sanger)Cmyb_C (PF09316)    Myb_DNA-binding (PF00249)   
Domain families : Pfam (NCBI)pfam09316    pfam00249   
Domain families : Smart (EMBL)SANT (SM00717)  
DMDM Disease mutations4605
Blocks (Seattle)P10244
Human Protein AtlasENSG00000101057 [gene] [tissue] [antibody] [cell] [cancer]
Peptide AtlasP10244
IPIIPI00019993   IPI01015657   
Protein Interaction databases
IntAct (EBI)P10244
Interologous Interaction database P10244
Ontologies - Pathways
Ontology : AmiGOmitotic cell cycle  DNA binding  chromatin binding  sequence-specific DNA binding transcription factor activity  protein binding  nucleus  transcription, DNA-templated  Myb complex  spindle assembly involved in mitosis  
Ontology : EGO-EBImitotic cell cycle  DNA binding  chromatin binding  sequence-specific DNA binding transcription factor activity  protein binding  nucleus  transcription, DNA-templated  Myb complex  spindle assembly involved in mitosis  
Pathways : KEGGHTLV-I infection   
Protein Interaction DatabaseMYBL2
Wikipedia pathwaysMYBL2
Gene fusion - rearrangments
Polymorphisms : SNP, mutations, diseases
SNP Single Nucleotide Polymorphism (NCBI)MYBL2
snp3D : Map Gene to Disease4605
Genetic variants : HAPMAPMYBL2
Exome VariantMYBL2
ICGC programENSG00000101057 
Somatic Mutations in Cancer : COSMICMYBL2 
CONAN: Copy Number AnalysisMYBL2 
Mutations and Diseases : HGMDMYBL2
Genomic VariantsMYBL2  MYBL2 [DGVbeta]
Pred. of missensesPolyPhen-2  SIFT(SG)  SIFT(JCVI)  Align-GVGD  MutAssessor  Mutanalyser  
Pred. splicesGeneSplicer  Human Splicing Finder  MaxEntScan  
Disease Genetic AssociationMYBL2
Huge Navigator MYBL2 [HugePedia]  MYBL2 [HugeCancerGEM]
General knowledge
Homologs : HomoloGeneMYBL2
Homology/Alignments : Family Browser (UCSC)MYBL2
Phylogenetic Trees/Animal Genes : TreeFamMYBL2
Chemical/Protein Interactions : CTD4605
Chemical/Pharm GKB GenePA31348
Clinical trialMYBL2
Cancer Resource (Charite)ENSG00000101057
Other databases
PubMed83 Pubmed reference(s) in Entrez


Requirement of b-myb function for survival and differentiative potential of human neuroblastoma cells.
Raschell G, Negroni A, Sala A, Pucci S, Romeo A, Calabretta B.
J Biol Chem. 1995 Apr 14;270(15):8540-5.
PMID 7721753
Mybl2 (Bmyb) maps to mouse chromosome 2 and human chromosome 20q13.1.
Noben-Trauth K, Copeland NG, Gilbert DJ, Jenkins NA, Sonoda G, Testa JR, Klempnauer KH.
Genomics. 1996 Aug 1;35(3):610-2.
PMID 8812502
The myb gene family in cell growth, differentiation and apoptosis.
Oh IH, Reddy EP.
Oncogene. 1999 May 13;18(19):3017-33.(Review).
PMID 10378697
Expression of B-myb in neuroblastoma tumors is a poor prognostic factor independent from MYCN amplification.
Raschella G, Cesi V, Amendola R, Negroni A, Tanno B, Altavista P, Tonni GP, De Bernardi B, Calabretta B.
Cancer Res. 1999 Jul 15;59(14):3365-8.
PMID 10416595
B-Myb protein in cellular proliferation, transcription control, and cancer: latest developments.
Sala A, Watson R.
J Cell Physiol. 1999 Jun;179(3):245-50.(Review).
PMID 10228942
B-myb is required for inner cell mass formation at an early stage of development.
Tanaka Y, Patestos NP, Maekawa T, Ishii S.
J Biol Chem. 1999 Oct 1;274(40):28067-70.
PMID 10497154
B-MYB is hypophosphorylated and resistant to degradation in neuroblastoma: implications for cell survival.
Schwab R, Caccamo A, Bettuzzi S, Anderson J, Sala A.
Blood Cells Mol Dis 2007; 39(3):263-71. Epub 2007 Jun 27.
PMID 17588787
Activation of B-Myb by E2F1 in hepatocellular carcinoma.
Nakajima T, Yasui K, Zen K, Inagaki Y, Fujii H, Minami M, Tanaka S, Taniwaki M, Itoh Y, Arii S, Inazawa J, Okanoue T.
Hepatol Res. 2008; 38(9): 886-95.
PMID 18624722
Isolation and functional assessment of common, polymorphic variants of the B-MYB proto-oncogene associated with a reduced cancer risk.
Schwab R, Bussolari R, Corvetta D, Chayka O, Santilli G, Kwok JM-M, Amorotti GF, Tonini P, Iacoviello L, Bertorelle R, Menin C, Hubank M, Calabretta B, Sala A.
Oncogene 2008; 27(20): 2929-33.
PMID 18026132
REVIEW articlesautomatic search in PubMed
Last year publicationsautomatic search in PubMed

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Written10-2008Olesya Chayka, Arturo Sala
Institute of Child Health Molecular Haematology and Cancer Biology Unit 30 Guilford street London, WC1N 1EH UK


This paper should be referenced as such :
Chayka, O ; Sala, A
MYBL2 (v-myb myeloblastosis viral oncogene homolog (avian)-like 2)
Atlas Genet Cytogenet Oncol Haematol. 2009;13(9):652-653.
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indexed on : Fri Jul 11 17:11:25 CEST 2014

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