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AssigneePharmacia P-L Biochemicals Inc.
InventorsSusan G. Frackman, Phillip P. Franciskovich, James F. Jolly, Robert A. Luhm, William A. Riedl
Estimating the term…
A bacterial preparation capable of packaging phage .lambda. DNA is disclosed. This preparation is in lyophilized form and is stable at ambient temperature. In a preferred form, the preparation contains an over-expressed terminase protein, is prepared from the bacterial strain E. coli Cla [.lambda. c/857 Sam7 .DELTA.(cos-Nu1-A)::Kn.sup.r ]/.lambda. pTER and is capable of a packaging efficiency of at least 1.times.10.sup.8 pfu/.mu.g wild type .lambda. DNA. The present invention is also a method of creating a phage .lambda. DNA packaging extract comprising the steps of preparing a bacterial extract capable of packaging phage .lambda. and lyophilizing said extract.
In a method of preparing a phage .lambda. packaging extract, the improvement comprising lyophilizing said extract to make a lyophilized extract.
A bacterial phage .lambda. DNA packaging extract preparation, wherein said preparation is in a lyophilized form and is stable at ambient temperature.
Dependencies are inferred from the claim text.