text: user1670: How do I know if it is a AND or OR relationship between genes associated with the same enzyme in KEGG? E.g., for EC:1.6.1.2 (http://www.genome.jp/dbget-bin/www_bget?ec:1.6.1.2) does the bacterium Streptomyces coelicolor (SCO) need SCO7622 AND SCO7623 or SCO7622 OR SCO7623?  
  
  user939: The enzyme EC:1.6.1.2 is an NAD(P) transhydrogenase and consists of two subunits. The two subunits are encoded by two different genes pntA and pntB.
  So in terms of computer logic I would say AND, both subunits are necessary for a functional NAD(P) transhydrogenase enzyme (EC:1.6.1.2).
  
original_text: 1670: <p>How do I know if it is a AND or OR relationship between genes associated with the same enzyme in KEGG? E.g., for EC:1.6.1.2 (<a href="http://www.genome.jp/dbget-bin/www_bget?ec:1.6.1.2" rel="nofollow noreferrer">http://www.genome.jp/dbget-bin/www_bget?ec:1.6.1.2</a>) does the bacterium <em>Streptomyces coelicolor</em> (SCO) need SCO7622 AND SCO7623 or SCO7622 OR SCO7623? <a href="https://i.stack.imgur.com/zIaRw.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/zIaRw.png" alt="enter image description here"></a> </p>
   939: <p>The enzyme EC:1.6.1.2 is an NAD(P) transhydrogenase and consists of two subunits. The two subunits are encoded by two different genes <a href="http://www.genome.jp/dbget-bin/www_bget?sco+SCO7623" rel="nofollow noreferrer">pntA</a> and <a href="http://www.genome.jp/dbget-bin/www_bget?sco:SCO7622" rel="nofollow noreferrer">pntB</a>.</p>
  
  <p>So in terms of computer logic I would say AND, both subunits are necessary for a functional NAD(P) transhydrogenase enzyme (EC:1.6.1.2).</p>
  