title: Isolation and partial characterization of genomic clones coding for a human pro-alpha 1 (II) collagen chain and demonstration of restriction fragment length polymorphism at the 3' end of the gene.
abstract: We have isolated two clones containing 19 kilobases (kb) of the human gene coding for a pro-alpha 1 (II) collagen chain from human lambda genomic DNA libraries. A 3' clone, HC2A, was selected by cross-hybridization with a cDNA clone containing sequences coding for the carboxy propeptide of chick type II procollagen. A second clone, HC2B, was obtained by screening the library with the 5' part of HC2A. The sequence analysis of exon 3 corresponding to the C propeptide reveals the presence of stretches of conserved nucleotides between the human and the chick type II procollagen genes. On Northern blots, the human collagen clone hybridizes strongly to a 5.5-kb RNA for the rat type II procollagen chain. Finally, studies of genomic DNAs from normal individuals reveal the presence of a HindIII and a BamHI polymorphic site at the 3' end of the gene.
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D002467:Cell Nucleus / Q000378:metabolism; D003001:Cloning, Molecular; D004262:DNA Restriction Enzymes; D005796:Genes; D006801:Humans; D007962:Leukocytes / Q000378:metabolism; D046911:Macromolecular Substances; D009693:Nucleic Acid Hybridization; D011110:Polymorphism, Genetic; D011347:Procollagen / Q000235:genetics*
chemical_list: D046911:Macromolecular Substances; D011347:Procollagen; D004262:DNA Restriction Enzymes