6Z1N:
reference: Structural basis of heterotetrameric assembly and disease mutations in the human cis-prenyltransferase complex., Bar-El ML, Vankova P, Yeheskel A, Simhaev L, Engel H, Man P, Haitin Y, Giladi M, Nat Commun. 2020 Oct 19;11(1):5273. doi: 10.1038/s41467-020-18970-z. PMID: 33077723

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