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Neuromedin B and Gastrin-Releasing Peptide mRNAs Are Differentially Distributed in the Rat Nervous System

By Etsuko Wada, James Way, Anne Marie Lebacq-verheyden and James F. Batteyl


The bombesin-like peptides are a family of structurally related amidated peptide ligands that are known to have a variety of potent pharmacological actions on various cells, including neurons in the rat brain. Two mammalian representatives of the bombesin family of peptides have been identified, gastrin-releasing peptide (GRP) and neuromedin B (NMB). Previously, we cloned the rat preproGRP gene and determined the locations of neurons expressing this gene using in situ hybridization. In this study, we describe the structure and sequence of the rat preproNMB gene, and the first detailed cellular localization of preproNMB mRNA in rat brain using in situ hybridization. Nucleotide sequence analysis of cDNA and genomic clones reveals a 117 amino acid precursor whose overall structure is similar to that described for human preproNMB. Sequence similarity between the ra

Year: 2013
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