A ribonucleoprotein granule located in the cytoplasm that is formed by the RNA-binding protein TIS11B and RNA molecules, enriched in membrane protein-encoding mRNAs with multiple AU-rich elements. TIS granules are reticular meshworks intertwined with the endoplasmic reticulum (ER).
Source:PMID:30479375,
PMID:30449617,
Wikipedia:TIGER_domain