What is NANOS2?
NANOS2 is an RNA-binding protein essential for fetal male germ cell development. While we have shown that the function of NANOS2 is vital for suppressing meiosis in embryonic XY germ cells, it is still unknown whether NANOS2 plays other roles in the sexual differentiation of male germ cells.
Is Nanos a gene?
Nanos genes are mainly known for their evolutionarily preserved role in germ cell survival and pluripotency. Nanos proteins have been reported to bind the C-terminal RNA-binding domain of Pumilio to form a post-transcriptional repressor complex.
Is Nanos a protein?
Nanos (Nos) is an evolutionary conserved protein expressed in the germline of various animal species. In Drosophila, maternal Nos protein is essential for germline development.
What is the function of Nanos?
In the embryo, Nanos protein function is required for establishment of the anterior-posterior body pattern and for the migration of primordial germ cells. During oogenesis, Nanos protein is involved in the establishment and maintenance of germ-line stem cells and the differentiation of oocyte precursor cells.
What does hunchback protein do?
The Hunchback protein, also a transcription factor, represses abdominal-specific genes, thereby allowing the region of hunchback expression to form the head and thorax. The Hunchback protein also works with Bicoid in generating the anterior pattern of the embryo.
What does Nanos do in Drosophila?
Drosophila Nanos acts as a molecular clamp that modulates the RNA-binding and repression activities of Pumilio.
Does nanos activate caudal?
The posterior organizing center is located at the posterior pole and acts translationally through the Nanos protein to inhibit anterior formation and transcriptionally through the Caudal protein to activate those genes that form the abdomen.
Why are bicoid and Nanos classified as maternal effect genes?
Nanos and Caudal are maternal effect genes that are important in the formation of more posterior abdominal segments of the Drosophila embryo. In embryos from bicoid mutant mothers, the head and thoracic structures are converted to the abdomen making the embryo with posterior structures on both ends, a lethal phenotype.
What does caudal protein do?
The Caudal protein is critical in specifying the posterior domains of the embryo, and it activates the genes responsible for the invagination of the hindgut (Wu and Lengyel 1998).
Does Nanos activate caudal?
What does the Knirps gene do?
The knirps and knirps-related genes organize the development of the second wing vein in Drosophila. The position of the L2 wing vein is determined by a chain of known developmental events, beginning with the primary subdivision of the wing imaginal disc into anterior versus posterior lineage compartments.
Is bicoid a morphogen?
Bicoid (Bcd) functions as a morphogen during Drosophila development. Accordingly, bcd mRNA is maternally localized to the anterior pole of the embryo, and Bcd forms an anterior/posterior gradient, which functions in a concentration dependent fashion.
What does Nanos do to hunchback?
Nanos, whose mRNA is localized to the posterior pole of mature oocyte, functions to inhibit Hunchback: the Nanos protein inactivates HB mRNA, preventing its translation in the posterior.
What type of gene is hunchback?
Hunchback is a bifunctional transcription factor that can activate and repress gene expression in Drosophila development. This study investigated the regulatory DNA sequence features that control Hunchback function by perturbing enhancers for one of its target genes, even-skipped (eve).