6M9K:
reference: Crystal structure of the Redbeta C-terminal domain in complex with lambda Exonuclease reveals an unexpected homology with lambda Orf and an interaction with Escherichia coli single stranded DNA binding protein., Caldwell BJ, Zakharova E, Filsinger GT, Wannier TM, Hempfling JP, Chun-Der L, Pei D, Church GM, Bell CE, Nucleic Acids Res. 2019 Feb 28;47(4):1950-1963. doi: 10.1093/nar/gky1309. PMID: 30624736

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