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DevelopmeRt VOLUME 11 NUMBER 9 PAGES 1087-1206 M a y 1, 1997

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J. Adams (Melbourne, Australia) J. Beckwith (Boston, USA) A. Berns (Amsterdam, The Netherlands) E. Blackburn (San Francisco, USA) D. Bohmann (Heidelberg, Germany) J. Brugge (Cambridge, USA) T. Cech (Boulder, USA) P. Chambon (Strasbourg, France) N.-H. Chua (New York, USA) S. Courtneidge (Redwood City, CA USA) S. Elledge (Houston, USA) R. Evans (La Jolla, USA) G. Fink (Cambridge, USA) P. Goodfellow (Harlow, UK) S. Gottesman (Bethesda, USA) C. Gross (San Francisco, USA) R. Grosschedl (San Francisco, USA) M. Groudine (Seattle, USA) L. Guarente (Cambridge, USA) E. Hafen (Zurich, Switzerland) S. Hake (Albany, CA USA) A. Hall (London, UK) R. Harland (Berkeley, USA) E. Harlow (Charlestown, USA) W. Herr (Cold Spring Harbor, USA) J. Hodgkin (Cambridge, UK) J.H.J. Hoeijmakers (Rotterdam, The

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Contents GENES & DEVELOPMENT May 1, 1997

Review Cell-cell interactions during plant development Sarah Hake and Bharat R. Char

1087

Research papers

DnaJ/hsp40 chaperone domain of SV40 large T antigen promotes efficient viral DNA replication Kathryn S. Campbell, Karen P. Mullane, Ibrahim A. Aksoy, Hilde Stubdal, Juan Zalvide, James M. Pipas, Pamela A. Silver, Thomas M. Roberts, Brian S. Schaffhausen, and James A. DeCaprio

1098

Yeast Rad55 and Rad57 proteins form a heterodimer that functions with replication protein A to promote DNA strand exchange by Rad51 recombinase Patrick Sung

1111

Direct regulation of rhodopsin 1 by Pax-6/eyeless in Drosophila: evidence for a conserved function in photoreceptors Guojun Sheng, Eric Thouvenot, Dietmar Schmucker, David S. Wilson, and Claude Desplan

1122

14-3-3¢ positively regulates Ras-mediated signaling in Drosophila Henry C. Chang and Gerald M. Rubin

1132

Requirement for Drosophila 14-3-34 in Raf-dependent photoreceptor development Lutz Kockel, Gerd Vorbr~iggen, Herbert J/ickle, Marek Mlodzik, and Dirk Bohmann

1140

Distribution of pre-mRNA splicing factors at sites of RNA polymerase II transcription Karla M. Neugebauer and Mark B. Roth

1148

Dynamic, mitotic-like behavior of a bacterial protein required for accurate chromosome partitioning Philippe Glaser, Michaela E. Sharpe, Brian Raether, Marta Perego, Kari Ohlsen, and Jeff Errington

1160

Regulation of Escherichia coli cell envelope proteins involved in protein folding and degradation by the Cpx two-component system Joe Pogliano, A. Simon Lynch, Dominique Belin, E.C.C. Lin, and Jon Beckwith

1169

(continued)

The ~r F and the Cpx signal transduction systems control the synthesis of periplasmic protein-folding enzymes in Escherichia coli Paul N. Danese and T h o m a s J. S i lhavy

1183

The Rhizobium meliloti Pn protein, which controls bacterial nitrogen metabolism, affects alfalfa nodule development Tan ia Arcond6guy, Isabelle Huez, Pascal Til lard, Ca the r ine Gangneux, Fran~oise de Billy, Ala in Gojon, Georges Truche t , and Danie l Kahn

1194

Cover The Rhizobium PII protein affects both Rhizobium nitrogen metabolism and alfalfa nodule development. (Top left) Developing nodule induced by wild-type Rhizobium meliloti; the central part of the growing nodule is occupied by a network of infection. (Bottom right) Developing nodule induced by z~glnBlO; no noticeable infection in the central part of the nodule is elicited by this mutant. (For details, see Arcondeguy et al., p. 1194.)