NEB does not add a dry ice surcharge to our competent cell shipments.
T7 Express lysY/Iq competent E.coli (C3013I) is available as a superior alternative to T7 Express Iq competent E.coli (C3016 ). The additional lysY gene expresses a phage T7 lysozyme variant that inhibits basal T7 RNA polymerase activity. The net result of employing lysY/Iq cells as a host strain is greater clone stability and equivalent or improved expression of recombinant protein.
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