Identification and molecular cloning of a soluble human granulocyte-macrophage colony-stimulating factor receptor
- Univ. of California, Los Angeles (United States)
- Univ. of Rochester, NY (United States)
Granulocyte-macrophage colony-stimulating factor (GM-CSF) plays an important role in hematopoiesis and host defense via interaction with specific cell-surface receptors in target tissues. The authors identified a truncated, soluble form of the low-affinity GM-CSF receptor (GMR) in choriocarcinoma cells. Low-affinity GMR cDNAs encoding both the membrane-bound and soluble receptors were obtained by PCR using primers corresponding to the published sequence. Clones encoding the soluble receptor were identical in sequence to the membrane-bound form but contained a 97-nucleotide internal deletion. The amino acid sequence of this deleted cDNA predicts a protein that lacks the 84 C-terminal amino acids of the membrane-bound receptor, including the transmembrane and cytoplasmic domains, and contains 16 different amino acids at its C terminus. The striking similarity between the soluble form of the GMR and other hematopoietin receptors suggests that soluble binding proteins may play an important role in regulating the broad spectrum of biological responses mediated by these cytokines.
- OSTI ID:
- 5604597
- Journal Information:
- Proceedings of the National Academy of Sciences of the United States of America; (United States), Journal Name: Proceedings of the National Academy of Sciences of the United States of America; (United States) Vol. 88:18; ISSN PNASA; ISSN 0027-8424
- Country of Publication:
- United States
- Language:
- English
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59 BASIC BIOLOGICAL SCIENCES
AMINO ACID SEQUENCE
ANIMAL CELLS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BODY
CLONING
COLONY FORMATION
CONNECTIVE TISSUE CELLS
DAYS LIVING RADIOISOTOPES
DNA
DNA HYBRIDIZATION
DNA SEQUENCING
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ELECTRON CAPTURE RADIOISOTOPES
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GROWTH FACTORS
HEMATOPOIETIC SYSTEM
HYBRIDIZATION
INTERMEDIATE MASS NUCLEI
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IODINE 125
IODINE ISOTOPES
ISOTOPES
LIGHT NUCLEI
LYMPHOKINES
MACROPHAGES
MEMBRANE PROTEINS
MITOGENS
MOLECULAR STRUCTURE
NUCLEI
NUCLEIC ACIDS
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
PHAGOCYTES
PHOSPHORUS 32
PHOSPHORUS ISOTOPES
PROTEINS
RADIOISOTOPES
RECEPTORS
RECOMBINANT DNA
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STRUCTURAL CHEMICAL ANALYSIS