MED14

PF3D7_0709300 (PfMed14) is a component of the Plasmodium falciparum Mediator complex, identified with high confidence by coimmunoprecipitation of the conserved subunit PfMed31 followed by mass spectrometry, consistent with a predicted scaffold role stabilizing the head, middle, and tail Mediator modules (PMID:35557691). Beyond its physical membership in this complex, no direct enzymatic activity, structural data, or loss-of-function phenotype has been experimentally established for PfMed14 itself in the available corpus. A proximity-labeling study additionally detected PfMed14 within the nuclear interaction network of the histone methyltransferase PfSET10, placing it near chromatin-modulation machinery, but this reflects co-detection rather than a validated direct interaction or defined function for PfMed14 (PMID:39445823).

1. 2008 Low

   Before any experimental work, it was unknown whether P. falciparum encoded a Mediator scaffold subunit; comparative genomics predicted a Med14 homolog, establishing a candidate gene to test.

   Evidence Comparative genomics / bioinformatics prediction of a conserved Mediator framework

   PMID:18515835

   Open questions at the time

   • Computational prediction only; the P. falciparum protein was not experimentally detected or validated
   • No evidence of expression, assembly, or function
   • Predicted module-bridging role untested
2. 2022 Medium

   To test whether the predicted subunit is actually assembled into a Mediator complex, reciprocal proteomics from a conserved subunit was needed; Co-IP of PfMed31 with mass spectrometry detected PfMed14 as a bona fide complex member, confirming physical presence in the P. falciparum Mediator.

   Evidence Coimmunoprecipitation of PfMed31 coupled with mass spectrometry

   PMID:35557691

   Open questions at the time

   • No mutagenesis or functional validation of PfMed14 itself
   • Predicted scaffold/module-bridging role inferred, not structurally demonstrated
   • No loss-of-function phenotype established
3. 2024 Low

   To place PfMed14 in a broader regulatory context, proximity labeling from a chromatin modifier was used; PfMed14 was detected in the nuclear interaction network of the histone methyltransferase PfSET10, linking it to chromatin-modulation and transcriptional regulation.

   Evidence TurboID proximity labeling coupled with mass spectrometry in blood-stage nuclei

   PMID:39445823

   Open questions at the time

   • Proximity detection only; no direct or reciprocal validation of a PfMed14–PfSET10 interaction
   • Functional consequence of the association unknown
   • Cannot distinguish direct contact from shared nuclear compartment

• It remains unknown what PfMed14 does mechanistically beyond complex membership: no enzymatic activity, structure, essentiality, or loss-of-function phenotype for PfMed14 itself has been established.
• No conditional knockdown/knockout phenotype for PfMed14
• No structural model of PfMed14 within the P. falciparum Mediator
• No demonstration of a scaffold/module-bridging function specific to PfMed14