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.

 Long - range mapping by pulse - field gel electrophoresis indicated that the three mdr genes are closely linked on a genomic DNA segment of approximately 625 kilobases .
mdr genes

 TOM1 encodes a member of the hect - domain - containing E3 ubiquitin - protein ligase family that is required for growth at elevated temperatures .
hect - domain

 The WEB2 gene encodes a 1 , 522 - amino - acid protein with homology to nucleic acid - dependent ATPases .

WEB2 gene

