All STAT proteins contain: 

An N-terminal DNA-binding domain

An SH2 domain

TLS Online TPP Program

#Id: 4765

#Unit 5. Developmental Biology

 PIE -1, is necessary for germline cell fate.

TLS Online TPP Program

#Id: 4766

#Unit 5. Developmental Biology

PIE-1 is placed into the P blastomeres through the action of the PAR-1 protein & it inhibit both SKN-1 and PAL-1 function in the P2 and subsequent germline cells.

TLS Online TPP Program

#Id: 4767

#Unit 5. Developmental Biology

Mutations of the maternal pie-1 gene result in germline blastomeres adopting somatic fates, with the P2 cell behaving similarly to a wild-type EMS blastomere.

TLS Online TPP Program

#Id: 4768

#Unit 5. Developmental Biology

In C. elegans, conditional specification occur in the development of the endoderm cell lineage.

TLS Online TPP Program

#Id: 4769

#Unit 5. Developmental Biology

Specification of the MS cell begins with maternal SKN-1 activating the genes encoding GATA transcription factors MED-1 and MED-2

TLS Online TPP Program

#Id: 4770

#Unit 5. Developmental Biology

The POP-1 encodes the TCF protein that binds β-catenin & blocks the pathway to the E fate by inhibiting endodermal transcription factors (END-1) in the prospective MS cell