Coordinator's report: Nuclear genes affecting the chloroplast

Coordinator's report: Nuclear genes affecting the chloroplast
Diter von Wettstein
Department of Physiology, Carlsberg Laboratory
Gamle Carlsberg Vej 10, DK-2500 Copenhagen-Valby, Denmark.
E-mail: diter@biobase.dk

The stock list and genetic information presented in the Barley Genetics Newsletter 21: 102-108 is valid and up-to-date.

The gene Xantha-f has been identified to code for the 150 kDa subunit of protoporphyrin IX-Mg-chelatase while the Xantha-h gene encodes the 42 kDa subunit of this enzyme. The Xantha-g gene encodes a third protein required for insertion of Mg^++ into protoporphyrin.

D. von Wettstein, S. Gough & C.G. Kannangara. 1995. Chlorophyll biosynthesis. The Plant Cell 7: 1039-1057.

P.E. Jensen, R.D. Willows, B. Larsen Petersen, U.C. Vothknecht, B.M. Stummann, C.G. Kannangara, D. von Wettstein & K.W. Henningsen: Structural genes for Mg-chelatase subunits in barley: Xantha-f, -g and -h. Mol. Gen. Genet. (in press).