Based on the provided abstracts, information about the olfactory marker protein (OMP) gene is extremely limited. The gene encodes a 19 kDa protein that is highly restricted to mature olfactory receptor neurons across vertebrate species 1. OMP participates in the olfactory signal transduction pathway, as evidenced by behavioral and electrophysiological deficits in OMP-null mice that can be reversed by intranasal infection with OMP-expressing adenovirus 2. The protein can form a 38 kDa homodimer through covalent cross-linking, with the dimer being much less stable than the monomer and preferentially located in a cytoskeletal fraction 2. OMP expression is regulated by transcription factor Foxj1, which controls both olfactory cilia biogenesis and OSN differentiation, with OMP being involved in odor-evoked signal transduction 3. The OMP gene structure is highly conserved between species, lacking canonical TATA and CAAT motifs and introns, with the protein sequence being 88.4% identical between mouse and human 1. However, the specific molecular mechanism by which OMP modulates olfactory signaling remains unclear from the available literature.