Nog
Developmental stage
Embryonic expression was first detected in the node at 7.5 dpc. By early somite stages, expression extends anteriorly along the entire length of the notochord and is expressed in the dorsal neural tube from the caudal hindbrain to the posterior-most region of the embryo. By the time cranial tube closure is completed expression is continuous along most of the dorsal midline of the neural tube, to its rostral termination at the base of the forebrain. Expression in the neural tube and caudal notochord remains unchanged during early organogenesis from 9.5 dpc to 10.5 dpc.
Function
Essential for cartilage morphogenesis and joint formation. Inhibitor of bone morphogenetic proteins (BMP) signaling which is required for growth and patterning of the neural tube and somite (PubMed:9585504, PubMed:9603738). Inhibits chondrocyte differentiation through its interaction with GDF5 and, probably, GDF6 (By similarity).
Sequence Similarities
Belongs to the noggin family.
Tissue Specificity
Expressed in condensing cartilage and immature chondrocytes.
Cellular localization
- Secreted
Alternative names
Noggin, Nog