λ DNA cl857 Sam7 is isolated from infected E. coli strain W3350. Restriction enzyme-digested λ DNA (48,502bp) may be used as a molecular weight size marker in gel analysis of nucleic acids. λ DNA is also a commonly used substrate in restriction enzyme activity assays. The nucleotide sequence has been determined.
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References
Sanger, F. et al. (1982) J. Mol. Biol. 162, 729–73.