May form homodimers and heterodimers with TMCC2 or TMCC3 via the coiled-coil domains. Interacts with ribosomal proteins RPL4 and RPS6. Concentrates in discrete patches along peripheral endoplasmic reticulum tubules. At 12.5 dpc, weak expression in the developing lung and hindbrain, high expression in the tongue mesenchyme (PubMed:27697108). At 14.5 dpc, expressed in the trigeminal ganglion, oral epithelium and hindbrain (PubMed:27697108). Also detected in lung, kidney and somites (PubMed:27697108). Belongs to the TEX28 family.