DMRT1: Transcription factor that plays a key role in male sex determination and differentiation by controlling testis development and male germ cell proliferation. Plays a central role in spermatogonia by inhibiting meiosis in undifferentiated spermatogonia and promoting mitosis, leading to spermatogonial development and allowing abundant and continuous production of sperm. Acts both as a transcription repressor and activator: prevents meiosis by restricting retinoic acid (RA)-dependent transcription and repressing STRA8 expression and promotes spermatogonial development by activating spermatogonial differentiation genes, such as SOHLH1. Also plays a key role in postnatal sex maintenance by maintaining testis determination and preventing feminization: represses transcription of female promoting genes such as FOXL2 and activates male-specific genes. May act as a tumor suppressor. May also play a minor role in oogenesis. Defects in DMRT1 may be a cause of testicular germ cell tumor (TGCT). A common solid malignancy in males. Germ cell tumors of the testis constitute 95% of all testicular neoplasms. Defects in DMRT1 may be a cause of 46,XY sex reversal type 4 (SRXY4). A condition characterized by male-to- female sex reversal in the presence of a normal 46,XY karyotype. Patients display complete or partial gonadal dysgenesis and a chromosome 9p deletion. Belongs to the DMRT family. 3 isoforms of the human protein are produced by alternative splicing.
Protein type: DNA-binding
Chromosomal Location of Human Ortholog: 9p24.3
Cellular Component: cytoplasm; nucleus
Molecular Function: chromatin binding; metal ion binding; protein heterodimerization activity; protein homodimerization activity; transcription factor activity
Biological Process: cell morphogenesis; germ cell migration; male sex determination; male sex differentiation; negative regulation of meiosis; negative regulation of transcription from RNA polymerase II promoter; oocyte development; positive regulation of mitosis; positive regulation of transcription from RNA polymerase II promoter; Sertoli cell development; Sertoli cell differentiation; sex differentiation; spermatogenesis; transcription from RNA polymerase II promoter
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