title: Molecular cloning and expression of the human 55 kd tumor necrosis factor receptor.
abstract: Two distinct receptors for tumor necrosis factor (TNF) of 55 and 75 kd are expressed at low levels by various cells. The 55 kd TNF receptor was purified from HL60 cells, and partial amino acid sequences were determined. Short degenerate sense and antisense oligonucleotide primers encoding the N- and C-terminal ends of a peptide of 22 amino acid residues were used to amplify a 66 bp cDNA fragment from HL60 RNA by reverse transcriptase-polymerase chain reaction. The cDNA fragment as a probe identified several overlapping clones in a human placenta cDNA library. The open reading frame of the cDNA predicts a 455 amino acid TNF receptor protein with leader, extracellular, transmembrane, and intracellular domains. When expressed in COS-1 cells or in a baculovirus system, the cDNA conferred TNF binding properties comparable to the native receptor. Surprisingly, the 55 kd TNF receptor shows a high degree of sequence homology to the NGF receptor extracellular domain.
authors.affiliation: Central Research Units, F. Hoffmann-LaRoche LTD, Basel, Switzerland.
authors.forename: H
authors.initials: H
authors.lastname: Loetscher
authors.forename: Y C
authors.initials: YC
authors.lastname: Pan
authors.forename: H W
authors.initials: HW
authors.lastname: Lahm
authors.forename: R
authors.initials: R
authors.lastname: Gentz
authors.forename: M
authors.initials: M
authors.lastname: Brockhaus
authors.forename: H
authors.initials: H
authors.lastname: Tabuchi
authors.forename: W
authors.initials: W
authors.lastname: Lesslauer
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002460:Cell Line; D003001:Cloning, Molecular; D004247:DNA / Q000235:genetics / Q000302:isolation & purification; D005260:Female; D015870:Gene Expression; D015723:Gene Library; D006801:Humans; D007700:Kinetics; D008969:Molecular Sequence Data; D008970:Molecular Weight; D009414:Nerve Growth Factors / Q000378:metabolism; D010920:Placenta / Q000378:metabolism; D011247:Pregnancy; D011956:Receptors, Cell Surface / Q000235:genetics* / Q000378:metabolism; D017475:Receptors, Nerve Growth Factor; D018124:Receptors, Tumor Necrosis Factor; D011994:Recombinant Proteins / Q000378:metabolism; D015183:Restriction Mapping; D012689:Sequence Homology, Nucleic Acid; D014162:Transfection; D014409:Tumor Necrosis Factor-alpha / Q000378:metabolism
chemical_list: D009414:Nerve Growth Factors; D011956:Receptors, Cell Surface; D017475:Receptors, Nerve Growth Factor; D018124:Receptors, Tumor Necrosis Factor; D011994:Recombinant Proteins; D014409:Tumor Necrosis Factor-alpha; D004247:DNA