Preferred Label : HasR protein, streptomyces ambofaciens; 
MeSH note : RNA polymerase sigma factor; genes hasR & hasL are 99% similar at the nucleotide level;
               alternative sigma factor homolog; hasR is one copy of a duplicated gene: hasR/hasL;
               from Streptomyces ambofaciens; amino acid sequence in first source; GenBank AF050150;
               DO NOT confuse with HasR protein, a heme receptor; 
Is substance : O; 
         
         
            Origin ID : C116165; 
UMLS CUI : C0761036; 
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