title: Cloning of the cDNA for a brain glycine-, glutamate- and thienylcyclohexylpiperidine-binding protein.
abstract: Polyclonal antibodies (Ab's) were raised against a 43-kDa component of a protein complex that has ligand recognition sites similar to those of brain N-methyl-D-aspartate (NMDA) receptors. The Ab's were used to immunopurify from brain synaptic membranes a 60-kDa glycine (Gly), glutamate (Glu) and thienylcyclohexylpiperidine (TCP)-binding protein and to screen a rat hippocampal cDNA expression library. A 1.85-kb clone, pGlyBP, coding for a protein of 470 amino acids (52.7 kDa) was identified. Northern blot analyses performed on poly(A+) RNA from brain revealed hybridization of the labeled cDNA probes to transcripts of 1.9 kb. E. coli transformed with the pGyBP expressed a protein that was recognized by the anti-43 kDa Ab's and had recognition sites for Gly, Glu and TCP. The cloned protein has 2 glycosylation sites, 3 hydrophobic domains, 4 cysteine-rich motifs (C-X2-C-X16-20-C-X5-11), and 2 regions homologous to the NR1 receptor protein.
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D001665:Binding Sites; D015152:Blotting, Northern; D001921:Brain / Q000378:metabolism*; D003001:Cloning, Molecular / Q000379:methods; D003545:Cysteine; D018076:DNA, Complementary / Q000378:metabolism; D015723:Gene Library; D018698:Glutamic Acid / Q000378:metabolism; D005998:Glycine / Q000378:metabolism; D006624:Hippocampus / Q000378:metabolism; D013287:Illicit Drugs; D007700:Kinetics; D008562:Membrane Glycoproteins / Q000096:biosynthesis* / Q000737:chemistry / Q000378:metabolism; D008969:Molecular Sequence Data; D009419:Nerve Tissue Proteins / Q000096:biosynthesis* / Q000737:chemistry / Q000378:metabolism; D010622:Phencyclidine / Q000031:analogs & derivatives / Q000378:metabolism; D012333:RNA, Messenger / Q000096:biosynthesis; D051381:Rats; D016194:Receptors, N-Methyl-D-Aspartate / Q000737:chemistry / Q000378:metabolism; D017386:Sequence Homology, Amino Acid; D013379:Substrate Specificity; D013570:Synaptic Membranes / Q000378:metabolism*
chemical_list: C096813:Cep104 protein, rat; D018076:DNA, Complementary; D013287:Illicit Drugs; D008562:Membrane Glycoproteins; D009419:Nerve Tissue Proteins; D012333:RNA, Messenger; D016194:Receptors, N-Methyl-D-Aspartate; D018698:Glutamic Acid; C012058:tenocyclidine; D010622:Phencyclidine; D003545:Cysteine; D005998:Glycine