Table 1.

Estimation of Hyd–SOD abundance by the analysis of active HydA

Strain	Active enzyme mean ± SE, µmole[H2] (mg[Chl] × h)−1
W.T [cc124]	104.6 ± 14.4
W.T [D66]	37.68 ± 8
HydA1+	34.57 ±  8.93
HS-1	0.02 ±  0.01
HS-14a	2.42 ±  0.54
HS-18	0.03 ±  0.02
HS-24	0.1 ±  0.02
HS-40a	0.62 ±  0.05
HS-52	0.12 ± 0.02
HS-55	0.06 ±  0.02
HS-62a	0.17 ±  0.03
HS-73	0.19 ±  0.03
HS-100	0.08 ± 0.03

^aSelected clones