-- Database schema
| Classification : GeneID [ TEXT ] primary_key , Localization [ TEXT ] | Genes : GeneID [ TEXT ] Genes.GeneID = Classification.GeneID , Essential [ TEXT ] , Class [ TEXT ] , Complex [ TEXT ] , Phenotype [ TEXT ] , Motif [ TEXT ] , Chromosome [ INTEGER ] , Function [ TEXT ] , Localization [ TEXT ] | Interactions : GeneID1 [ TEXT ] Interactions.GeneID1 = Classification.GeneID , GeneID2 [ TEXT ] Interactions.GeneID2 = Classification.GeneID , Type [ TEXT ] , Expression_Corr [ REAL ] |
-- -- Taking all the essential genes of the transcription factors class located in the nucleus as a reference, how many of them carry out a genetic-type interaction with another gene? List them.

SELECT T2.GeneID1 FROM Genes AS T1 INNER JOIN Interactions AS T2 ON T1.GeneID = T2.GeneID1 WHERE T1.Localization = 'nucleus' AND T1.Class = 'Transcription factors' AND T1.Essential = 'Essential' AND T2.Expression_Corr != 0;