RNA-binding protein involved in the histone pre-mRNA processing. Binds the stem-loop structure of replication-dependent histone pre-mRNAs and contributes to efficient 3'-end processing by stabilizing the complex between histone pre-mRNA and U7 small nuclear ribonucleoprotein (snRNP), via the histone downstream element (HDE). Plays an important role in targeting mature histone mRNA from the nucleus to the cytoplasm and to the translation machinery. Stabilizes mature histone mRNA and could be involved in cell-cycle regulation of histone gene expression. Involved in the mechanism by which growing oocytes accumulate histone proteins that support early embryogenesis. Binds to the 5' side of the stem-loop structure of histone pre-mRNAs. Monomer. SLBP/pre-mRNA complex interacts with ZNF473. Interacts with the Importin alpha/Importin beta receptor, LSM1, MIF4GD, TNPO3 and UPF1. Interaction with LSM1 occurs when histone mRNA is being rapidly degraded during the S phase. Found in a ternary complex with ERI1 and the stem-loop structure of the 3' end of histone mRNA. Associates with polyribosomes. Identified in a histone pre-mRNA complex, at least composed of ERI1, LSM11, SLBP, SNRPB, SYNCRIP and YBX1. Binds in a cooperative manner with ERI1 to the mature 3'-end of histone mRNAs. Widely expressed. Belongs to the SLBP family. 2 isoforms of the human protein are produced by alternative splicing. Note: This description may include information from UniProtKB.
Biological Process: DNA replication during S phase; histone mRNA 3'-end processing; histone mRNA metabolic process; mRNA export from nucleus; mRNA transport; termination of RNA polymerase II transcription