The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 15, 2005
Filed:
Jul. 06, 1998
Yoshihide Hayashizaki, Ibaraki, JP;
Masanori Watahiki, Toyama, JP;
Yoshihide Hayashizaki, Ibaraki, JP;
Masanori Watahiki, Toyama, JP;
The Institute of Physical and Chemical Research, Wako, JP;
Nippon Gene Co., Ltd., Tokyo, JP;
Nippon Genetech Co., Ltd., Tokyo, JP;
Abstract
Disclosed are RNA polymerases consisting of a wild type RNA polymerase provided that at least one of amino acids in the wild type RNA polymerase has been modified to enhance its ability for incorporating 3'-deoxyribonucleotides and derivatives thereof in comparison with the corresponding wild type RNA polymerases. Specifically, disclosed are, for example, the RNA polymerases wherein at least one amino acid present in a nucleotide binding sites of the wild type RNA polymerases such as phenylalanine has been replaced with tyrosine. The RNA polymerases of the present invention are a RNA polymerase which exhibits little or no bias for incorporation between ribonucleotides and 3′-deoxyribonucleotide as well as among ribonucleotides having different base groups and among deoxyribonucleotides having. different base groups.