UBTF (upstream binding transcription factor) is composed of six HMG box domains, which are lined up consecutively. It also contains a dimerization and a transactivation domain. It has two isoforms- UBF1 and UBF2. It is also called NOR (nucleolus organizer region)-90, and is a member of the NOR family, which is a family of ribosomal genes. It is highly expressed in human fetus. This gene is localized to human chromosome 17q21.3.
Synonyms: Anti-NOR-90; Anti-UBF; Anti-UBF1; Anti-UBF2
Storage: -20C
Application: Anti-UBTF antibody produced in rabbit, a Prestige Antibody, is developed and validated by the Human Protein Atlas (HPA) project (www.proteinatlas.org). Each antibody is tested by immunohistochemistry against hundreds of normal and disease tissues. These images can be viewed on the Human Protein Atlas (HPA) site by clicking on the Image Gallery link. The antibodies are also tested using immunofluorescence and western blotting. To view these protocols and other useful information about Prestige Antibodies and the HPA, visit sigma.com/prestige.
Biochem Physiol Actions: UBTF (upstream binding transcription factor) or NOR-90 is a transcriptionally competent NOR as it is active during interphase. It serves as a scaffold to conform chromatin in a transcriptionally favorable condition. It is involved in the transcription of rDNA (ribosomal DNA), when it interacts with Pol I (RNA polymerase 7) enzyme. Along with SL1 (selectivity factor 1) complex, it binds to the enhancer region of rDNA. It acts as a negative regulator of Herpes simplex virus 1 (HSV-1) replication, where it suppresses the expression of viral DNA. It plays a role in tissue development and leukemia development.
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