The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
Use at an assay dependent concentration. PubMed: 20436469
Use a concentration of 1.25 µg/ml. Detects a band of approximately 36 kDa (predicted molecular weight: 36 kDa).Can be blocked with MafB peptide (ab205727). Good results were obtained when blocked with 5% non-fat dry milk in 0.05% PBS-T.
Use a concentration of 4 - 8 µg/ml.
Use 4µg for 106 cells. ab171870-Rabbit polyclonal IgG, is suitable for use as an isotype control with this antibody.
Use at an assay dependent concentration.
FunctionActs as a transcriptional activator or repressor. Plays a pivotal role in regulating lineage-specific hematopoiesis by repressing ETS1-mediated transcription of erythroid-specific genes in myeloid cells. Required for monocytic, macrophage, podocyte and islet beta cell differentiation. Involved in renal tubule survival and F4/80 maturation. Activates the insulin and glucagon promoters. Together with PAX6, transactivates weakly the glucagon gene promoter through the G1 element. SUMO modification controls its transcriptional activity and ability to specify macrophage fate. Binds element G1 on the glucagon promoter (By similarity). Involved either as an oncogene or as a tumor suppressor, depending on the cell context.
Involvement in diseaseDefects in MAFB are the cause of multicentric carpotarsal osteolysis syndrome (MCTO) [MIM:166300]. MCTO is a rare skeletal disorder, usually presenting in early childhood with a clinical picture mimicking juvenile rheumatoid arthritis. Progressive destruction of the carpal and tarsal bone usually occurs and other bones may also be involved. Chronic renal failure is a frequent component of the syndrome. Mental retardation and minor facial anomalies have been noted in some patients.
Sequence similaritiesBelongs to the bZIP family. Maf subfamily. Contains 1 bZIP domain.
DomainThe leucine-zipper domain is involved in the interaction with LRPICD.
Post-translational modificationsPhosphorylated by GSK3 and MAPK13 on serine and threonine residues. Sumoylated. Sumoylation on Lys-32 and Lys-297 stimulates its transcriptional repression activity and promotes macrophage differentiation from myeloid progenitors.
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) analyisis of human kidney tissue labelling MafB with ab66506 at an 4-8µg/ml. Arrows indicate positively labelled epithelial cells of the renal tubule. Magnification: 400X.
Flow Cytometry - MafB antibody (ab66506)This image is courtesy of an Abreview submitted by Kay Muthu.
ab66506, at 4 µg/cells, staining MAFB in mouse bone marrow by flow cytometry. Cells were paraformaldehyde fixed and permeabilized using Saponin. The secondary antibody was ab6717, a FITC-conjugated goat polyclonal to rabbit IgG.
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