TASK DEFINITION: In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.
PROBLEM:  In addition , mrp17 - 1 , in combination with some mutations affecting another mitochondrial ribosomal protein , caused a synthetic defective phenotype .

SOLUTION: mrp17 - 1

PROBLEM:  Developmentally - regulated interaction of a transcription factor complex containing CDP / cut with the early histone H3 gene promoter of the sea urchin Tetrapygus niger is associated with changes in chromatin structure and gene expression .

SOLUTION: histone H3

PROBLEM:  Hetero - oligomerization of Smad4 with the pathway - restricted SMAD proteins is essential for Smad4 - mediated transcription .

SOLUTION:
SMAD proteins