The function of Ensembl gene identifier ENSG00000142864 (SERBP1, SERPINE1 mRNA binding protein 1) is as follows. Ribosome-binding protein that promotes ribosome hibernation, a process during which ribosomes are stabilized in an inactive state and preserved from proteasomal degradation (PubMed:36691768). Acts via its association with EEF2/eEF2 factor, sequestering EEF2/eEF2 at the A- site of the ribosome and promoting ribosome stabilization and storage in an inactive state (By similarity). May also play a role in the regulation of mRNA stability: binds to the 3'-most 134 nt of the SERPINE1/PAI1 mRNA, a region which confers cyclic nucleotide regulation of message decay (PubMed:11001948). Seems to play a role in PML-nuclear bodies formation (PubMed:28695742). {ECO:0000250|UniProtKB:Q9CY58, ECO:0000269|PubMed:11001948, ECO:0000269|PubMed:28695742, ECO:0000269|PubMed:36691768}.