Chondroitin sulfate (CS) is a glycosaminoglycan which is an important structural component of the extracellular matrix and which links to proteins to form proteoglycans. Chondroitin sulfate E (CS-E) is an isomer of chondroitin sulfate in which the C-4 and C-6 hydroxyl groups are sulfated. This gene encodes a type II transmembrane glycoprotein that acts as a sulfotransferase to transfer sulfate to the C-6 hydroxal group of chondroitin sulfate. This gene has also been identified as being co-expressed with RAG1 in B-cells and as potentially acting as a B-cell surface signaling receptor. Alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Jul 2012]
Forensic Context
A study in humans established a targeted RNA sequencing protocol for predicting the time-of-day of bloodstain deposition using 69 candidate mRNA markers, where the CHST15 was included as a time-of-day prediction candidate but its coefficient was zero in the final penalised regression model, which achieved a root mean squared error of 3 hours and 44 minutes with 78% of predictions correct within ±4 hours [Gosch et al. DOI:10.1101/2025.02.03.636230][Gosch et al. DOI:10.1016/J.Fsigen.2025.103287].