Growth Factor Independence-1B Protein
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Growth Factor Independence-1B Protein Definition
Growth Factor Independence-1B, encoded by the human GFI1B gene, is a zinc finger protein. This protein is a transcription factor with specific involvement in the regulation of erythroid cell growth in normal erythropoiesis through modulating erythroid-specific gene expression. The function of GFI1B to modulate transcription depends on promoter context. Human GFI1B expression by Northern blot analysis is highest in bone marrow and fetal liver as well as in the chronic myeloid leukemia cell line K562 with lower levels in other hematopoietic precursor cells. Expression of GFI1B is highly restricted to hematopoietic stem cells, erythroblasts, and megakaryocytes. Its expression does not promote erythroid commitment, but enhances proliferation of immature erythroblasts. The chromosomal region of this gene is translocated to chromosome 22q11 in chronic myeloid leukemia. (From OMIM, PubMed 12351384 and NCI)
Growth Factor Independence-1B Protein Synonyms
Growth Factor Independence-1B, GF11B Protein, GFI1B
Terms in Growth Factor Independence-1B Protein category
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