Transcription of a subset of human class II major histocompatibility complex genes is regulated by a nucleoprotein complex that contains c-fos or an antigenically related protein
- Harvard Univ., Cambridge, MA (United States)
- National Inst. of Health, Bethesda, MD (United States)
Transcriptional regulation of the human major histocompatibility complex class II genes requires at least two upstream elements, the X and Y boxes, located in the {minus}50- to {minus}150-base-pair region of all class II promoters. The DRA and DPB promoters contain phorbol ester-responsive elements overlapping the 3{prime} side of the X boxes. Mutation of this sequence down-regulates the efficiency of the DRA promoter, suggesting that a positive regulator(s) binds to this site. In this report, anti-sense c-fos RNA and an anti-c-fos antibody were used to show that the product of the protooncogene c-fos or an antigenically related protein is a component of a complex that binds to the X box and is required for maximal transcription from the DRA and DPB promoters. As c-fos (or its related proteins) cannot bind alone to DNA, these results suggest that it may dimerize with other members of the JUN/AP-1 family, such as hXBP1, to participate in the activation of a subset of class II major histocompatibility complex genes.
- OSTI ID:
- 6097147
- Journal Information:
- Proceedings of the National Academy of Sciences of the United States of America; (United States), Vol. 88:10; ISSN 0027-8424
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GENES
TRANSCRIPTION
HISTOCOMPATIBILITY COMPLEX
GENE REGULATION
ENZYME IMMUNOASSAY
GENE MUTATIONS
HELA CELLS
LEUCINE
NUCLEOPROTEINS
ONCOGENES
PHORBOL ESTERS
PHOSPHORUS 32
PLASMIDS
AMINO ACIDS
ANTIGENS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOASSAY
CARBOXYLIC ACIDS
CARCINOGENS
CELL CONSTITUENTS
DAYS LIVING RADIOISOTOPES
ESTERS
IMMUNOASSAY
ISOTOPES
LIGHT NUCLEI
MUTATIONS
NUCLEI
ODD-ODD NUCLEI
ORGANIC ACIDS
ORGANIC COMPOUNDS
PHOSPHORUS ISOTOPES
PROTEINS
RADIOISOTOPES
550201* - Biochemistry- Tracer Techniques