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Description

Musculoskeletal embryonic nuclear protein 1 (UniProt: Q8IVN3, also known a MUSTN1) is encoded by the MUSTN1 gene (Gene ID: 389125) in human. MUSTN1 is a small protein of the MUSTANG family that is found predominantly in the musculoskeletal system. It plays a role in the development and regeneration of the musculoskeletal system. It localizes to the nucleus and specifically, spatially in mesenchymal cells of the developing limbs and in the fracture callus in periosteal osteoprogenitor cells, proliferating chondrocytes, and young active osteoblasts. MUSTN1 sequence is highly homologous in vertebrates and contains a nuclear localization sequence without any other significant motifs. MUSTN1 is highly expressed during embryogenesis and is essential for chondrocyte proliferation and differentiation. (Ref.: Gersch, RP and Hadjiargyrou, M (2009). Bone 45(2), 330-338).