3SLS:
reference: Engineering human MEK-1 for structural studies: A case study of combinatorial domain hunting., Meier C, Brookings DC, Ceska TA, Doyle C, Gong H, McMillan D, Saville GP, Mushtaq A, Knight D, Reich S, Pearl LH, Powell KA, Savva R, Allen RA, J Struct Biol. 2012 Feb;177(2):329-34. Epub 2012 Jan 8. PMID: 22245778

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