The terminal protein of the linear DNA plasmid pGKL2 shares an N-terminal domain of the plasmid-encoded DNA polymerase

Yeast ◽  
1996 ◽  
Vol 12 (3) ◽  
pp. 241-246 ◽  
Author(s):  
Masaharu Takeda ◽  
Hiroyuki Hiraishi ◽  
Toshikazu Takesako ◽  
Sumio Tanase ◽  
Norio Gunge
1998 ◽  
Vol 278 (4) ◽  
pp. 741-755 ◽  
Author(s):  
Verónica Truniger ◽  
José M Lázaro ◽  
Margarita Salas ◽  
Luis Blanco

1990 ◽  
Vol 265 (28) ◽  
pp. 17274-17280
Author(s):  
M Tokunaga ◽  
A Kawamura ◽  
K Kitada ◽  
F Hishinuma

Biomolecules ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 648
Author(s):  
del Prado ◽  
Santos ◽  
Lázaro ◽  
Salas ◽  
de Vega

Bacteriophage Phi29 DNA polymerase belongs to the protein-primed subgroup of family B DNA polymerases that use a terminal protein (TP) as a primer to initiate genome replication. The resolution of the crystallographic structure showed that it consists of an N-terminal domain with the exonuclease activity and a C-terminal polymerization domain. It also has two subdomains specific of the protein-primed DNA polymerases; the TP Regions 1 (TPR1) that interacts with TP and DNA, and 2 (TPR2), that couples both processivity and strand displacement to the enzyme. The superimposition of the structures of the apo polymerase and the polymerase in the polymerase/TP heterodimer shows that the structural changes are restricted almost to the TPR1 loop (residues 304–314). In order to study the role of this loop in binding the DNA and the TP, we changed the residues Arg306, Arg308, Phe309, Tyr310, and Lys311 into alanine, and also made the deletion mutant Δ6 lacking residues Arg306–Lys311. The results show a defective TP binding capacity in mutants R306A, F309A, Y310A, and Δ6. The additional impaired primer-terminus stabilization at the polymerization active site in mutants Y310A and Δ6 allows us to propose a role for the Phi29 DNA polymerase TPR1 loop in the proper positioning of the DNA and TP-priming 3’-OH termini at the preinsertion site of the polymerase to enable efficient initiation and further elongation steps during Phi29 TP-DNA replication.


Tetrahedron ◽  
1997 ◽  
Vol 53 (35) ◽  
pp. 12057-12066 ◽  
Author(s):  
Gregory P. Mullen ◽  
Walfrido Antuch ◽  
Mark W. Maciejewski ◽  
Rajendra Prasad ◽  
Samuel H. Wilson

Data in Brief ◽  
2020 ◽  
Vol 29 ◽  
pp. 105188 ◽  
Author(s):  
Ravil R. Garafutdinov ◽  
Assol R. Sakhabutdinova ◽  
Maxim S. Kupryushkin ◽  
Dmitrii V. Pyshnyi

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