New England Biolabs, Inc.

Other

Siu-Hong Chan

Shuang-Yong Xu

Zhenyu Zhu

Shengxi Guan

Dapeng Sun

Aine Quimby

Penghua Zhang

Hua Wei

Yishu Huang

Xuhui Lai

Xianghui Li

Christopher H Taron

Chunhua Zhang

G Brett Robb

Mehul Ganatra

Saulius Vainauskas

Bijoyita Roy

Aine Blanchard

Shuang- Yong Xu

Provided herein is a method for efficiently capping RNA in vitro. In some embodiments the capping reaction may be done at high temperature using Vaccinia capping enzyme or a variant thereof. In other embodiments, the capping reactions may comprise a capping enzyme from a large virus of amoeba, e.g., Faustovirus, mimivirus or moumouvirus, or a variant thereof. Compositions and kits for practicing the method are also provided.

Enzymatic RNA capping method

The present disclosure relates, according to some embodiments, to compositions, methods, and/or kits for producing vaccinia capping enzyme. For example, active, heterodimers of vaccinia capping enzyme may be produced as fusions comprising D1 and D12 subunits. Vaccinia capping enzyme fusion proteins may further comprise a linker.

Vaccinia capping enzyme compositions and methods

The present disclosure relates to compositions, kits, and methods of making RNA vaccines having an appropriate cap structure. Systems, apparatus, compositions, and/or methods may include and/or use, in some embodiments, non-naturally occurring single-chain RNA capping enzymes. In some embodiments, an RNA capping enzyme may include an FCE variant having (a) an amino acid sequence at least 90% identical to positions 1 to 878 of SEQ ID NO: 1, and/or (b) one or more substitutions relative to SEQ ID NO: 1 at a position selected from positions corresponding to positions 215, 337, 572, 648, and 833 (e.g., a position selected from positions corresponding to position 215, 337, and 572) of SEQ ID NO: 1.

FCE mRNA capping enzyme compositions, methods and kits

Methods and compositions are provided for engineering mutant enzymes with reduced star activity where the mutant enzymes have a fidelity index (FI) In a specified buffer that is greater than the FI of the non-mutated enzyme in the same buffer.

High fidelity restriction endonucleases

Compositions and methods are provided for enzymes with altered properties that involve a systematic approach to mutagenesis and a screening assay that permits selection of the desired proteins. Embodiments of the method are particularly suited for modifying specific properties of restriction endonucleases such as star activity. The compositions includes restriction endonucleases with reduced star activity as defined by an overall fidelity index improvement factor.

Methods and compositions are provided for engineering mutant enzymes with reduced star activity where the mutant enzymes have a fidelity index (FI) in a specified buffer that is greater than the FI of the non-mutated enzyme in the same buffer.

Growing community of inventors

Ipswich, MA, United States of America

Siu-Hong Chan