This authored record preserves a short excerpt from the original article; it is an access aid, not independent experimental evidence. Publication and provider caches are unchanged.
Original JCI article, Results paragraph beginning “To further validate”; supplement, Methods pp. 5–7 and Supplemental Figure 1 pp. 15–16. Human HEK293T tagged co-immunoprecipitation assays include CSPP1, CEP104, CCDC66, ARMC9 and TOGARAM1. Figure 1C/F of the supplement also compares differently tagged CSPP1 molecules. The actual Figure 1 page was visually read; no band quantification is inferred.
Exact primary excerpt: “we performed reciprocal co-IPs of all binary permutations”.
The excerpt describes the experimental design. It does not establish purified pairwise contact, native stoichiometry, or functional equivalence of every CSPP1 splice product. The historical construct transcript is NM_024790.6.