Neurospora crassa Glutamine Synthetase 

 -  Journal Biol. Chem., 251(15), p.4787-4791, 1976 .
<br/><br/> Neurospora crassa glutamine synthetase was purified to hemogeneity by procedure based on affinity chromatography. The enzyme is adsorbed to a matrix of anthranilic acid bound to Sepharose and eluted with AMP. Different experimental approaches indicate that the enzyme has an octameric structure formed by subunits of identical molecular weight.