A ribonucleoprotein that binds to specific sites in, and is required for cleavage of, the 3'-end of histone pre-mRNAs. The complex contains the U7 snRNP and additional proteins, including the stem-loop binding protein (SLBP) and the exonuclease 3'hExo/Eri-1. (Gene Ontology, GO_0071204)
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7 proteins localized to the histone pre-mrna 3'end processing complex cellular component from the COMPARTMENTS Curated Protein Localization Evidence Scores dataset.