Pax genes contain paired domains with strong homology to genes in Droso-phila which are involved in programming early development. Pax-9, a member of the paired box-containing gene family, is closely related in its paired do-main to Pax-1. The Pax-9 gene encodes the highly conserved paired domain and the gene is a member of the same subgroup as Pax-1/undulated. Pax-9 is essential for the development of a variety of organs and skeletal elements. Mutations in either the Pax-1 or the Pax-9 genes may produce an inherited skeletal disorder such as the Jarcho-Levin syndrome or other forms of spondylocostal dysplasia, conditions resembling “undulated” in the mouse. A frameshift mutation within the paired domain of Pax-9 was identified in a family segregating autosomal dominant oligodontia whose members had normal primary dentition but lacked most permanent molars. In addition to lack of permanent molars, some individuals also lacked maxillary and/or mandibular second premolars, as well as mandibular central incisors. The gene which encodes Pax-9 maps to human chromosome 14q12-q13.
Background References
1. Sherwood RI et al. Transcriptional dynamics of endodermal organ formation. Dev Dyn 238:29-42 (2009).
2. Kendall J et al. Oncogenic cooperation and coamplification of developmental transcription factor genes in lung cancer. Proc Natl Acad Sci U S A 104:16663-8 (2007).
Western blot analysis of PAX9 on different lysates with Rabbit anti-PAX9 antibody (ET1612-59) at 1/5,000 dilution.
Lane 1: Mouse skeletal muscle tissue lysate Lane 2: Mouse stomach tissue lysate Lane 3: Rat skeletal muscle tissue lysate Lane 4: Rat heart tissue lysate
Lysates/proteins at 40 µg/Lane.
Predicted band size: 36 kDa Observed band size: 34 kDa
Exposure time: 10 seconds; ECL: K1801;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (ET1612-59) at 1/5,000 dilution was used in primary antibody dilution (K1803) at 4℃ overnight. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1/50,000 dilution was used for 1 hour at room temperature.
Western blot analysis of PAX9 on different lysates using anti-PAX9 antibody at 1/1,000 dilution. Positive control: Lane 1: HepG2 cell lysate Lane 2: HeLa cell lysate
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