GFI1B

Gene Information

Official Symbol: GFI1B
Official Name: growth factor independent 1B transcriptional repressor
Aliases and Previous Symbols: N/A
Entrez ID: 8328
UniProt: Q5VTD9
Interactions: BioGRID
PubMed articles: Open PubMed
OMIM: Open OMIM

Function Summary

Entrez Summary: This gene encodes a zinc-finger containing transcriptional regulator that is primarily expressed in cells of hematopoietic lineage. The encoded protein complexes with numerous other transcriptional regulatory proteins including GATA-1, runt-related transcription factor 1 and histone deacetylases to control expression of genes involved in the development and maturation of erythrocytes and megakaryocytes. Mutations in this gene are the cause of the autosomal dominant platelet disorder, platelet-type bleeding disorder-17. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Aug 2014].
UniProt Summary: Essential proto-oncogenic transcriptional regulator necessary for development and differentiation of erythroid and megakaryocytic lineages. Component of a RCOR-GFI-KDM1A-HDAC complex that suppresses, via histone deacetylase (HDAC) recruitment, a number of genes implicated in multilineage blood cell development and controls hematopoietic differentiation. Transcriptional repressor or activator depending on both promoter and cell type context; represses promoter activity of SOCS1 and SOCS3 and thus, may regulate cytokine signaling pathways. Cooperates with GATA1 to repress target gene transcription, such as the apoptosis regulator BCL2L1; GFI1B silencing in leukemic cell lines markedly increase apoptosis rate. Inhibits down- regulation of MYC and MYB as well as the cyclin-dependent kinase inhibitor CDKN1A/P21WAF1 in IL6-treated myelomonocytic cells. Represses expression of GATA3 in T-cell lymphomas and inhibits GATA1-mediated transcription; as GATA1 also mediates erythroid GFI1B transcription, both GATA1 and GFI1B participate in a feedback regulatory pathway controlling the expression of GFI1B gene in erythroid cells. Suppresses GATA1-mediated stimulation of GFI1B promoter through protein interaction. Binds to gamma- satellite DNA and to its own promoter, auto-repressing its own expression. Alters histone methylation by recruiting histone methyltransferase to target genes promoters. Plays a role in heterochromatin formation. {ECO:0000269|PubMed:12351384, ECO:0000269|PubMed:16177182, ECO:0000269|PubMed:16688220, ECO:0000269|PubMed:16782810, ECO:0000269|PubMed:17156408, ECO:0000269|PubMed:17272506, ECO:0000269|PubMed:17420275}.

Pfam Domains GO Terms

CRISPR Data

Compound Hit Most Correlated Genes in Chemogenomics Tissues where Essential in the Avana Dataset (DepMap 20Q1)

Global Fraction of Cell Lines Where Essential: 0/726

Tissue	Fraction Of Cell Lines Where Essential
1290807.0	0/1
909776.0	0/1
bile duct	0/28
blood	0/28
bone	0/25
breast	0/33
central nervous system	0/56
cervix	0/4
colorectal	0/17
esophagus	0/13
fibroblast	0/1
gastric	0/15
kidney	0/21
liver	0/20
lung	0/75
lymphocyte	0/14
ovary	0/26
pancreas	0/24
peripheral nervous system	0/16
plasma cell	0/15
prostate	0/1
skin	0/24
soft tissue	0/7
thyroid	0/2
upper aerodigestive	0/22
urinary tract	0/29
uterus	0/5

Essentiality in NALM6

Essentiality Rank: 3316
Expression level (log2 read counts): 0.15

Expression Distribution

RNA polymerase II transcription factor binding
negative regulation of G1/S transition of mitotic cell cycle
negative regulation of cell cycle G1/S phase transition
nuclear matrix
regulation of G1/S transition of mitotic cell cycle
regulation of cell cycle G1/S phase transition
transcription factor complex
negative regulation of mitotic cell cycle phase transition
negative regulation of cell cycle phase transition
negative regulation of mitotic cell cycle
negative regulation of cell cycle process
regulation of mitotic cell cycle phase transition
regulation of cell cycle phase transition
negative regulation of cell cycle
regulation of mitotic cell cycle
chromatin organization
regulation of cell cycle process
negative regulation of transcription by RNA polymerase II
chromosome organization
regulation of cell cycle
negative regulation of transcription, DNA-templated
negative regulation of nucleic acid-templated transcription
negative regulation of RNA biosynthetic process
negative regulation of RNA metabolic process
negative regulation of cellular macromolecule biosynthetic process
negative regulation of nucleobase-containing compound metabolic process
DNA binding
negative regulation of macromolecule biosynthetic process
negative regulation of cellular biosynthetic process
negative regulation of biosynthetic process
DNA-binding transcription factor activity, RNA polymerase II-specific
negative regulation of gene expression