title: Isolation of cDNA clones for the human transferrin receptor.
abstract: A cDNA clone bank containing 30 000 clones was constructed from sucrose gradient-fractionated mRNA from human placenta. mRNA coding for transferrin receptor (TR) was enriched by polysome immuno-adsorbed chromatography with monospecific rabbit IgG and protein-A Sepharose. The library was screened for hybridisation to 32P-labelled cDNA synthesised from immunoselected TR mRNA and from poly(A)+ RNA of the polysome fraction that failed to bind to protein-A Sepharose. Plasmids isolated from colonies showing hybridisation only to the probe made from immunoselected mRNA were then subjected to hybrid selection. Two clones, pTR-48 and pTR-67, were able to hybridise the mRNA coding for the TR.
mesh_terms: D002460:Cell Line; D003001:Cloning, Molecular; D004247:DNA / Q000302:isolation & purification*; D005260:Female; D005796:Genes; D006367:HeLa Cells / Q000378:metabolism; D006801:Humans; D009693:Nucleic Acid Hybridization; D010920:Placenta / Q000378:metabolism; D011247:Pregnancy; D014176:Protein Biosynthesis; D012333:RNA, Messenger / Q000235:genetics / Q000302:isolation & purification; D011956:Receptors, Cell Surface / Q000235:genetics* / Q000378:metabolism; D011990:Receptors, Transferrin; D013601:T-Lymphocytes; D014168:Transferrin / Q000378:metabolism
chemical_list: D012333:RNA, Messenger; D011956:Receptors, Cell Surface; D011990:Receptors, Transferrin; D014168:Transferrin; D004247:DNA