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B6db references: 98300644

type Journal Article
authors Zinecker, H.; Andreesen, J. R.; Pich, A.
title Partial purification of an iron-dependent L-serine dehydratase from Clostridium sticklandii
journal J Basic Microbiol
ui 98300644
year (1998)
volume 38
number 2
pages 147-55
keywords Aerobiosis
abstract An oxygen-sensitive and highly unstable L-serine dehydratase was partially purified from the Gram-positive anaerobe Clostridium sticklandii. The final active preparation contained five proteins of 27, 30, 44.5, 46, and 58 kDa as judged by SDS-PAGE. The N-terminal sequence of the 30 kDa subunit showed some similarity to the alpha- subunits of the iron-containing L-serine dehydratases from Clostridium propionicum and Peptostreptococcus asaccharolyticus. Oxygen-inactivated L-serine dehydratase from C. sticklandii was reactivated by incubation with Fe2+ under reducing conditions. Furthermore, the enzyme was inactivated by iron-chelating substances like phenanthroline and EDTA. Pyridoxal-5-phosphate (PLP) did not stimulate the activity, and known inhibitors of PLP-containing enzymes such as NaBH4 had no effect on the activity of L-serine dehydratase from C. sticklandii.
last changed 2002/11/18 17:04

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