title: cDNA sequence, protein structure, and chromosomal location of the human gene for poly(ADP-ribose) polymerase.
abstract: Recently we described a full-length cDNA for the human nuclear enzyme poly(ADP-ribose) polymerase. Here, we report the chromosomal localization and partial map of the human gene for this enzyme as well as the complete coding sequence for this protein. The nucleotide sequence reveals a single 3042-base open reading frame encoding a protein with a predicted Mr of 113,135. A comparison of this deduced amino acid sequence with the amino acid sequence of three peptides derived from human poly(ADP-ribose) polymerase revealed a match of 27 amino acid residues. A computer-derived structural analysis of the enzyme and a search for similarities with other proteins confirmed that the polymerase belongs to a subfamily of DNA/NAD-binding proteins and DNA-repair proteins. Possible Zn2+-binding "fingers," a nucleotide-binding fold, and a nuclear transport signal were noted. Additionally, chromosomal mapping has identified polymerase-hybridizing sequences on human chromosomes 1 (the active gene), 13, and 14 (processed pseudogenes). Using the polymerase cDNA as a probe, we also have detected several DNA restriction fragment length polymorphisms in normal humans.
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D002874:Chromosome Mapping; D002878:Chromosomes, Human, Pair 1; D002882:Chromosomes, Human, Pair 13; D002883:Chromosomes, Human, Pair 14; D003001:Cloning, Molecular; D004247:DNA / Q000235:genetics; D006801:Humans; D008969:Molecular Sequence Data; D011065:Poly(ADP-ribose) Polymerases / Q000235:genetics*; D012150:Polymorphism, Restriction Fragment Length; D011487:Protein Conformation
chemical_list: D004247:DNA; D011065:Poly(ADP-ribose) Polymerases