Document 0547 DOCN M9590547 TI Structures of DNA and RNA polymerases and their interactions with nucleic acid substrates. DT 9509 AU Arnold E; Ding J; Hughes SH; Hostomsky Z; Center for Advanced Biotechnology and Medicine and Rutgers; University Chemistry Department, Piscataway, NJ 08854-5638, USA. SO Curr Opin Struct Biol. 1995 Feb;5(1):27-38. Unique Identifier : AIDSLINE MED/95292059 AB DNA and RNA polymerases are enzymes that are primarily responsible for copying genetic material in all living systems. The four polymerases whose structures have been determined by X-ray crystallographic methods have significant similarities at the polymerase active site that are indicative of common requirements for polynucleotide synthesis. Structural studies of complexes of the Klenow fragment of Escherichia coli DNA polymerase I, HIV type 1 reverse transcriptase, and rat DNA polymerase beta with DNA are leading to generalized models for catalysis. DE Animal DNA Polymerase I/CHEMISTRY/METABOLISM DNA Polymerases/*CHEMISTRY/*METABOLISM Human Nucleic Acids/*CHEMISTRY/*METABOLISM *Protein Conformation Rats Reverse Transcriptase/CHEMISTRY/METABOLISM RNA Polymerases/*CHEMISTRY/*METABOLISM Support, U.S. Gov't, P.H.S. JOURNAL ARTICLE REVIEW REVIEW, TUTORIAL SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).