2.3.1.19	6.2	9.5	butanoylphosphate formation, less than 50% of maximal activity above and below	486470	
2.3.1.19	6.5	8	butanoylphosphate formation, 50% of maximal activity at pH 6.5, 80% of maximal activity at pH 8.0	486469	
2.3.1.19	6.8	9.5	butanoyl-CoA formation, less than 50% of maximal activity above and below	486470