Cullin 2 (Cul2) encodes a protein that plays important roles during oogenesis. Reduction of the product of Cul2 in somatic cells produces tumorous germaria with excess germline stem cell-like cells due to the elevation of Dpp signaling in the niche; Belongs to the cullin family.

Elongin C (EloC) encodes an essential protein for development that participates in the control of wing cell identity. EloB, EloC and EloA encode for subunits of the Elongin complex, which interacts in vivo with the chromatin factor encoded by corto.

Transcription elongation factor B polypeptide 3; SIII, also known as elongin, is a general transcription elongation factor that increases the RNA polymerase II transcription elongation past template-encoded arresting sites. Subunit A is transcriptionally active and its transcription activity is strongly enhanced by binding to the dimeric complex of the SIII regulatory subunits B and C (elongin BC complex). May play an important role in metamorphosis.

NEDD8; Ubiquitin-like protein which plays an important role in cell cycle control, embryogenesis and neurogenesis. Covalent attachment to its substrates requires prior activation by the E1 complex Uba3-Ula1 and linkage to the E2 enzyme UbcE2M. Attachment of Nedd8 to cullins activates their associated E3 ubiquitin ligase activity, and thus promotes polyubiquitination and proteasomal degradation of cyclins and other regulatory proteins.

Protein Vhl; Involved in development of tracheal vasculature. Probably involved in halting cell migration at the end of vascular tube outgrowth. Possesses E3 ubiquitin ligase activity when in complex with Elongin BC complex, Cul2 and Rox1a/Rbx1, and can target sima/Hif1a for ubiquitination. May play a critical role in promoting microtubule stabilization when tubulins are correctly folded by the prefoldin complex. If tubulin is incorrectly folded, may promote its degradation.

RING-box protein 1A; Core component of multiple SCF (SKP1-CUL1-F-box protein) E3 ubiquitin-protein ligase complexes which mediate the ubiquitination of proteins involved in cell cycle progression, signal transduction and transcription. Through the RING-type zinc finger, seems to recruit the E2 ubiquitination enzyme to the complex and brings it into close proximity to the substrate. Required for the specific SCF-dependent proteolysis of CI, but not that of ARM, suggesting that it also participates in the selection of substrates inside the SCF complex. During early metamorphosis, part of [...]

Suppressor of Cytokine Signaling at 16D (Socs16D) encodes a member of the SOCS family. It binds to the product of Pvr when catalytically active and is required for downstream activation of Target of Rapamycin Complex 1, but not the product of rl.

Suppressor of cytokine signaling at 36E (Socs36E) encodes a negative regulator of the JAK/STAT and EGFR pathways. It is a transcriptional target of the product of Stat92E that mediates lysosomal degradation following pathway stimulation and inhibits basal pathway activity.

Regulator of cullins 2 (Roc2) encodes a C2H2 type zinc finger protein that binds specifically to the product of Cul5 and recruits ubiquitin-charged E2 to the CRL5 E3 ubiquitin ligase complex, which functions during oogenesis.