Table of contents


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Editorial

Developing open access p1027

doi:10.1038/ncb1203-1027a


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Perspective

The COP9 signalosome: an assembly and maintenance platform for cullin ubiquitin ligases? pp1029 - 1033

Dieter A. Wolf, Chunshui Zhou & Susan Wee

doi:10.1038/ncb1203-1029


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Meeting Report

Programmed cell death: Superman meets Dr Death pp1035 - 1038

Pascal Meier & John Silke

doi:10.1038/ncb1203-1035


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Book Review

Microarray data analysis for beginners p1039

Terry Speed reviews Microarray Gene Expression Data Analysis: A Beginner's Guide by Helen C Causton, John Quackenbush & Alvis Brazma

doi:10.1038/ncb1203-1039


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News and Views

Calcium orchestrates apoptosis pp1041 - 1043

Mark P. Mattson & Sic L. Chan

doi:10.1038/ncb1203-1041

Apoptosis is a feature of many diseases and is critical for the sculpting and maintenance of tissues. New work demonstrates that calcium released from the endoplasmic reticulum synchronizes the mass exodus of cytochrome c from the mitochondria, a phenomenon that coordinates apoptosis.


Kinesin: walking or limping? pp1043 - 1044

Manfred Schliwa

doi:10.1038/ncb1203-1043

Some kinesin motors can move along a microtubule for many hundred steps without dissociating. These motors are dimers, but precisely how the two motor domains are coordinated during stepping is still the subject of debate. A novel experimental approach offers new insights.


AP-1B: polarized sorting at the endosome pp1045 - 1047

Linton M. Traub & Gerard Apodaca

doi:10.1038/ncb1203-1045

Polarized epithelia require selective protein trafficking to establish and preserve distinct apical and basolateral surfaces. Recent work indicates that in polarized cells, the AP-1B clathrin adaptor recognizes certain basolateral targeting signals in an endosomal compartment where it seems to not only capture cargo but also promote recruitment of targeting and fusion machinery, ensuring accurate polarized sorting.


A filopodial synapse? p1047

Jack Horne

doi:10.1038/ncb1203-1047


Go ahead, break my symmetry! pp1048 - 1049

Kendall J. Blumer & John A. Cooper

doi:10.1038/ncb1203-1048

Work in this issue advances our understanding of how the small G protein Cdc42 functions to polarize budding yeast. Remarkably, Cdc42 can polarize in the absence of upstream cues or positive feedback from the cytoskeleton. Polarization requires the scaffold protein Bem1 and cycling of Cdc42 between its GTP- and GDP-bound states.


Cell of the month: Spark of Life: inside functional corps p1050

Preeti Dahiya

doi:10.1038/ncb1203-1050


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Article

Cytochrome c binds to inositol (1,4,5) trisphosphate receptors, amplifying calcium-dependent apoptosis pp1051 - 1061

Darren Boehning, Randen L. Patterson, Leela Sedaghat, Natalia O. Glebova, Tomohiro Kurosaki & Solomon H. Snyder

doi:10.1038/ncb1063

See also: News and Views by Mattson & Chan


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Letters

Scaffold-mediated symmetry breaking by Cdc42p pp1062 - 1070

Javier E. Irazoqui, Amy S. Gladfelter & Daniel J. Lew

doi:10.1038/ncb1068

See also: News and Views by Blumer & Cooper


Citron-N is a neuronal Rho-associated protein involved in Golgi organization through actin cytoskeleton regulation pp1071 - 1078

Paola Camera, Jorge Santos Da Silva, Gareth Griffiths, Maria Gabriella Giuffrida, Luciana Ferrara, Vanessa Schubert, Sara Imarisio, Lorenzo Silengo, Carlos G. Dotti & Ferdinando Di Cunto

doi:10.1038/ncb1064


Alternate fast and slow stepping of a heterodimeric kinesin molecule pp1079 - 1082

Kuniyoshi Kaseda, Hideo Higuchi & Keiko Hirose

doi:10.1038/ncb1067

See also: News and Views by Schliwa


Mitochondrial translocation of cofilin is an early step in apoptosis induction pp1083 - 1089

Boon Tin Chua, Christiane Volbracht, Kuan Onn Tan, Rong Li, Victor C. Yu & Peng Li

doi:10.1038/ncb1070


Securin and B-cyclin/CDK are the only essential targets of the APC pp1090 - 1094

Brian R. Thornton & David P. Toczyski

doi:10.1038/ncb1066


RGS16 inhibits signalling through the Galpha13–Rho axis pp1095 - 1103

Eric N. Johnson, Tammy M. Seasholtz, Abdul A. Waheed, Barry Kreutz, Nobuchika Suzuki, Tohru Kozasa, Teresa L.Z. Jones, Joan Heller Brown & Kirk M. Druey

doi:10.1038/ncb1065


Rac–MEKK3–MKK3 scaffolding for p38 MAPK activation during hyperosmotic shock pp1104 - 1110

Mark T. Uhlik, Amy N. Abell, Nancy L. Johnson, Weiyong Sun, Bruce D. Cuevas, Katherine E. Lobel-Rice, Eric A. Horne, Mark L. Dell'Acqua & Gary L. Johnson

doi:10.1038/ncb1071


Hsk1–Dfp1 is required for heterochromatin-mediated cohesion at centromeres pp1111 - 1116

Julie M. Bailis, Pascal Bernard, Richard Antonelli, Robin C. Allshire & Susan L. Forsburg

doi:10.1038/ncb1069


A new sperm-specific Na+/H+ Exchanger required for sperm motility and fertility pp1117 - 1122

Dan Wang, Shelby M. King, Timothy A. Quill, Lynda K. Doolittle & David L. Garbers

doi:10.1038/ncb1072


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