Atomic model of a pyrimidine dimer excision repair enzyme complexed with a DNA substrate: structural basis for damaged DNA recognition.Vassylyev, D.G., Kashiwagi, T., Mikami, Y., Ariyoshi, M., Iwai, S., Ohtsuka, E., Morikawa, K.
(1995) Cell 83: 773-782
- PubMed: 8521494
- PubMed Abstract:
- Preliminary Crystallographic Study of Pyrimidine Dimer-Specific Excision Repair Enzyme from Bacteriophage T4
Morikawa, K.,Tsujimoto, M.,Ikehara, M.,Inaoka, T.,Ohtsuka, E.
(1988) J.Mol.Biol. 202: 683
- Role of the Basic Amino Acid Cluster and Glu-23 in Pyrimidine Dimer Glycosylase Activity of T4 Endonuclease V
Doi, T.,Recktenwald, A.,Karaki, Y.,Kikuchi, M.,Morikawa, K.,Ikehara, M.,Inaoka, T.,Hori, N.,Ohtsuka, E.
(1992) Proc.Natl.Acad.Sci.USA 89: 9420
- X-Ray Structure of T4 Endonuclease V: An Excision Repair Enzyme Specific for a Pyrimidine Dimer
Morikawa, K.,Matsumoto, O.,Tsujimoto, M.,Katayanagi, K.,Ariyoshi, M.,Doi, T.,Ikehara, M.,Inaoka, T.,Ohtsuka, E.
(1992) Science 256: 523
- Crystal Structure of a Pyrimidine Dimer-Specific Excision Repair Enzyme from Bacteriophage T4: Refinement at 1.45 Angstroms and X-Ray Analysis of the Three Active Site Mutants
Morikawa, K.,Ariyoshi, M.,Vassylyev, D.G.,Matsumoto, O.,Katayanagi, K.,Ohtsuka, E.
(1995) J.Mol.Biol. 249: 360
- DNA Repair Enzymes
(1993) Curr.Opin.Struct.Biol. 3: 17
T4 endonuclease V is a DNA repair enzyme from bacteriophage T4 that catalyzes the first reaction step of the pyrimidine dimer-specific base excision repair pathway. The crystal structure of this enzyme complexed with a duplex DNA substrate, containin ...
T4 endonuclease V is a DNA repair enzyme from bacteriophage T4 that catalyzes the first reaction step of the pyrimidine dimer-specific base excision repair pathway. The crystal structure of this enzyme complexed with a duplex DNA substrate, containing a thymine dimer, has been determined at 2.75 A resolution. The atomic structure of the complex reveals the unique conformation of the DNA duplex, which exhibits a sharp kink with a 60 degree inclination at the central thymine dimer. The adenine base complementary to the 5' side of the thymine dimer is completely flipped out of the DNA duplex and trapped in a cavity on the protein surface. These structural features allow an understanding of the catalytic mechanism and implicate a general mechanism of how other repair enzymes recognize damaged DNA duplexes.
Protein Engineering Research Institute, Japan.