title: An alternately spliced mRNA encoding functional domains of murine MAdCAM-1.
abstract: cDNA clones representing a small (0.8 kb) form of murine mucosal addressin cell adhesion molecule-1 (MAdCAM-1) mRNA were obtained and sequenced. The sequence was identical to the published 1.6 kb murine MAdCAM-1 cDNA sequence, except that 432 nucleotides encoding the mucin-like and IgA-homologous portions were deleted. This cDNA most likely represents an alternately spliced mRNA. Substantial amounts of both the short and long MAdCAM-1 mRNAs are present in murine mesenteric lymph node. Ig fusion proteins displaying either the short or long forms of MAdCAM-1 can bind Mn(++)-activated JY cells bearing human alpha 4 beta 7 integrin, indicating that the two N-terminal Ig-like domains of MAdCAM-1 are sufficient to bind its integrin counter-receptor.
mesh_terms: D017398:Alternative Splicing; D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D001665:Binding Sites; D015815:Cell Adhesion Molecules; D002459:Cell Fusion; D002460:Cell Line; D003001:Cloning, Molecular; D017931:DNA Primers; D006801:Humans; D007136:Immunoglobulins / Q000096:biosynthesis*; D016023:Integrins / Q000378:metabolism; D007700:Kinetics; D008198:Lymph Nodes / Q000378:metabolism*; D051379:Mice; D008807:Mice, Inbred BALB C; D008969:Molecular Sequence Data; D009088:Mucoproteins / Q000096:biosynthesis*; D016296:Mutagenesis; D016133:Polymerase Chain Reaction; D012333:RNA, Messenger / Q000096:biosynthesis* / Q000378:metabolism; D016201:Receptors, Lymphocyte Homing / Q000096:biosynthesis* / Q000378:metabolism; D011993:Recombinant Fusion Proteins / Q000096:biosynthesis / Q000378:metabolism; D017384:Sequence Deletion
chemical_list: D015815:Cell Adhesion Molecules; D017931:DNA Primers; D007136:Immunoglobulins; D016023:Integrins; C504265:MADCAM1 protein, human; C489082:Madcam1 protein, mouse; D009088:Mucoproteins; D012333:RNA, Messenger; D016201:Receptors, Lymphocyte Homing; D011993:Recombinant Fusion Proteins; C071777:integrin alpha4beta7