BOB.1 is a transcription activating factor necessary for the formation of follicular germinal center and the production of immunoglobulin. It works together with Oct-2 and is highly expressed in granulocytes of spleen and peripheral blood. It is mainly used for the typing of Hodgkin's lymphoma, mainly nodular lymphocytes. Hodgkin's lymphoma is positive and classical Hodgkin's lymphoma is negative.
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Function:
Disease:A chromosomal aberration involving POU2AF1/OBF1 may be a cause of a form of B-cell leukemia. Translocation t(3;11)(q27;q23) with BCL6.,Function:Transcriptional coactivator that specifically associates with either OCT1 or OCT2. It boosts the OCT1 mediated promoter activity and to a lesser extent, that of OCT2. It has no intrinsic DNA-binding activity. It recognizes the POU domains of OCT1 and OCT2. It is essential for the response of B-cells to antigens and required for the formation of germinal centers.,PTM:Ubiquitinated; mediated by SIAH1 or SIAH2 and leading to its subsequent proteasomal degradation.,similarity:Belongs to the POU2AF1 family.,tissue specificity:B-cell specific.,
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Cellular Localization:
Nuclear, Cytoplasmic
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Tissue Expression:
B-cell specific (PubMed:7779176, PubMed:7859290). Detected in mainly in spleen, but also in thymus, periphral blood leukocyte and small intestine (PubMed:7779176, PubMed:7859290).