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FLASH GENE

Symbol

OLIG2

contributors: shn - updated : 21-10-2010

HGNC name	oligodendrocyte lineage transcription factor 2
HGNC id	9398

FLASH GENE DNA RNA EXPRESSION PROTEIN DISORDER ANIMAL & CELL MODELS

Location	21q22.11      Physical location : 34.398.238 - 34.401.500
Synonym name	basic domain, helix-loop-helix protein, class B, 1
	class B basic helix-loop-helix protein 1
	class E basic helix-loop-helix protein 19
	human protein kinase C-binding protein RACK17
	oligodendrocyte transcription factor 2
	oligodendrocyte-specific bHLH transcription factor 2
	protein kinase C binding protein 2
	protein kinase C-binding protein 2
	protein kinase C-binding protein RACK17
Synonym symbol(s)	BHLHB1, RACK17, PRKCBP2, OLIGO2, bHLHe19

DNA

TYPE	functioning gene
STRUCTURE	3.26 kb     2 Exon(s)

10 Kb 5' upstream gene genomic sequence study

MAPPING

cloned

Y

linked

N

status

confirmed

Map	cen - D21S261 - D21S262 - OLIG2 - D21S1898 - D21S1910 - qter

Physical map

RNA

TRANSCRIPTS	type	messenger

identification nb exons type bp product Protein kDa AA specific expression Year Pubmed NM_005806 2 - 2505 NP_005797 - 323 oligodendroglial tumors of the brain, pMN domain of the spinal cord - 11955447

EXPRESSION

Type	restricted

expressed in	(based on citations)
organ(s)	System Organ level 1 Organ level 2 Organ level 3 Organ level 4 Level Pubmed Species Stage Rna symbol Nervous brain       specific   spinal cord       specific

tissue

System Tissue Tissue level 1 Tissue level 2 Level Pubmed Species Stage Rna symbol Nervous central

cells

System Cell Pubmed Species Stage Rna symbol Nervous oligodendrocyte

cell lineage	gliogenic progenitors in the postnatal subventricular zone
cell lines	embryonic and adult NG2 cells
fluid/secretion

at STAGE

physiological period

embryo

Text	developing astrocytes

PROTEIN

PHYSICAL PROPERTIES

STRUCTURE

motifs/domains

helix-loop-helix (HLH) DNA binding domain

conjugated

HOMOLOGY

interspecies	ortholog to Olig 2, Rattus norvegicus
	ortholog to Olig 2, Mus musculus
	ortholog to olig2, danio rerio
	ortholog to OLIG2, Pan troglodytes

Homologene

FAMILY

basic helix loop helix (BHLH) family of transcription family

CATEGORY

transcription factor

SUBCELLULAR LOCALIZATION	intracellular
	intracellular,cytoplasm
	intracellular,nucleus

basic FUNCTION	plays in cooperation with Neurogenin2 vital roles in the coordinated induction of pan-neuronal and subtype-specific properties of motoneurons
	required for oligodendrocytes and motor neuron specification in the spinal cord
	controlling the development of neural crest cells, astrocytes and oligodendrocytes, three neuroectodermal-derived cells
	plays critical roles in oligodendrocyte and motor neuron development
	export of OLIG2, stimulated AKT, by from the nucleus of neural stem cell is essential for the astrocyte differentiation
	repressor of neurogenesis in cells reacting to brain injury and open innovative perspectives toward evoking endogenous neuronal repair
	having repressor function, both sufficient and necessary to prevent neuronal differentiation and to direct subventricular zone progenitors toward astrocytic and oligodendrocytic fates
	required for proliferation of neural progenitors and for glioma formation
	playing a crucial role in white matter astrocyte development, but not in the cortical gray matter astrocytes
	role in gliogenesis in the dorsal pallium
	play a role in ventral telencephalic neurogenesis

CELLULAR PROCESS

nucleotide, transcription

PHYSIOLOGICAL PROCESS

development , nervous system , neurogenesis

PATHWAY

metabolism

signaling

a component

INTERACTION

DNA

RNA

small molecule

protein	NK2 homeobox 2, Nkx2.2
	SRY (sex determining region Y)-box 10, SOX10 and SOXE
	NEUROG2 to modulate gene expression in motor neuron progenitor cells
	ID2 (inhibited posttranslationally through the interaction with ID2)

cell & other

REGULATION

ASSOCIATED DISORDERS

corresponding disease(s)

Other morbid association(s)

Type Gene Modification Chromosome rearrangement Protein expression Protein Function tumoral       gain of function activated in T cell lymphoblastic leukemia with t(14;21) (q11.2;q22) constitutional     --over   acute and chronic brain injury tumoral     --low   may be related to the malignant behavior of human glioblastoma tumoral     --over   in oligodendroglial tumors constitutional   amplification     Olig1 and Olig2 triplication causes developmental brain defects in Down syndrome

Susceptibility

to schizophrenia

Variant & Polymorphism SNP	SNP rs762178 in OLIG2 seems to be a potential candidate in altering risk for schizophrenia in the Chinese Han population

Candidate gene
Marker	a molecular marker for human glial brain tumors
	a marker for the diagnosis of oligodendroglial tumours
Therapy target

ANIMAL & CELL MODELS

	in Olig1(-/-)2(-/-) double-mutant mice motoneurons are largely eliminated, and oligodendrocyte differentiation is abolished
	mice lacking Olig2 function demonstrates a failure of NG2 cell development at embryonic and perinatal stages
	in Olig2 deficient mouse, astrocyte development was retarded in the dorsal neocortex, but not in the basal forebrain
	Olig2 is triplicated and overexpressed in the Ts65Dn mouse (mouse models of Down syndrome) forebrain displaying cognitive deficits