2253
The hydrophobic domain is homologous to three yeast polypeptides , suggesting that this higher eukaryotic gene could have evolved from recombination between a gene that encoded a soluble nuclear protein and a membrane protein gene similar to those in yeast .
 protein: hydrophobic domain; protein: membrane protein; DNA: membrane protein gene; DNA: higher eukaryotic gene; protein: soluble nuclear protein
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: hydrophobic domain, membrane protein, membrane protein gene, higher eukaryotic gene, soluble nuclear protein 
Answer:
 protein: hydrophobic domain; protein: membrane protein; DNA: membrane protein gene; DNA: higher eukaryotic gene; protein: soluble nuclear protein