10006
Cloning of the cDNA encoding human SR-BP shows an open reading frame for a 223-amino acid protein , which is homologous to the recently cloned sigma 1 receptor .
 protein: 223-amino acid protein; protein: sigma 1 receptor; protein: SR-BP; DNA: open reading frame; DNA: cDNA; protein: human SR-BP
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: 223-amino acid protein, sigma 1 receptor, SR-BP, open reading frame, cDNA, human SR-BP 
Answer:
 protein: 223-amino acid protein; protein: sigma 1 receptor; protein: SR-BP; DNA: open reading frame; DNA: cDNA; protein: human SR-BP