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Front Matter Source: Proceedings of the National Academy of Sciences of the United States of America, Vol. 96, No. 2 (Jan. 19, 1999), pp. i-viii Published by: National Academy of Sciences Stable URL: http://www.jstor.org/stable/46804 . Accessed: 03/05/2014 23:38 Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at . http://www.jstor.org/page/info/about/policies/terms.jsp . JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact [email protected]. . National Academy of Sciences is collaborating with JSTOR to digitize, preserve and extend access to Proceedings of the National Academy of Sciences of the United States of America. http://www.jstor.org This content downloaded from 130.132.123.28 on Sat, 3 May 2014 23:38:17 PM All use subject to JSTOR Terms and Conditions
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Page 1: Front Matter

Front MatterSource: Proceedings of the National Academy of Sciences of the United States of America,Vol. 96, No. 2 (Jan. 19, 1999), pp. i-viiiPublished by: National Academy of SciencesStable URL: http://www.jstor.org/stable/46804 .

Accessed: 03/05/2014 23:38

Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at .http://www.jstor.org/page/info/about/policies/terms.jsp

.JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range ofcontent in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new formsof scholarship. For more information about JSTOR, please contact [email protected].

.

National Academy of Sciences is collaborating with JSTOR to digitize, preserve and extend access toProceedings of the National Academy of Sciences of the United States of America.

http://www.jstor.org

This content downloaded from 130.132.123.28 on Sat, 3 May 2014 23:38:17 PMAll use subject to JSTOR Terms and Conditions

Page 2: Front Matter

PNAS Proceedings of the National Academy of Sciences of the United States of America

January 19, 1999 j vol. 96 j no. 2 pp. 319-796 www.pnas.org

Cytochrome b5 and blue flower color

Extending the size limit of protein NMR

Touch-evoked pain requires prostaglandin D2

Optimizing gene therapy vectors

Genetic code origins

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Page 3: Front Matter

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Page 4: Front Matter

PROCEEDINGS OF THE

NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA

Officers of the Academy

BRUCE ALBERTS, President JACK HALPERN, Vice President PETER H. RAVEN, Home Secretary F. SHERWOOD ROWLAND, Foreign Secretary RONALD L. GRAHAM, Treasurer

Editor-in-Chief NICHOLAS R. COZZARELLI

PNAS Editorial Board

MAY R. BERENBAUM JOSEPH L. GOLDSTEIN ROBERT LANGER KAI L. SIMONS PETER J. BICKEL COREY S. GOODMAN HARVEY F. LODISH CHRISTOPHER A. SIMS MARIO R. CAPECCHI CAROL A. GROSS PHIL W. MAJERUS SOLOMON H. SNYDER WILLIAM CATTERALL JACK HALPERN PHILIPPA MARRACK CHRISTOPHER R. SOMERVILLE ANTHONY CERAMI BERTIL HILLE RICHARD D. MCKELVEY LARRY R. SQUIRE PIERRE CHAMBON PIERRE C. HOHENBERG ARNO G. MOTULSKY STEVEN M. STANLEY MARSHALL H. COHEN H. ROBERT HORVITZ JEREMY NATHANS CHARLES F. STEVENS STANLEY N. COHEN ANTHONY R. HUNTER STANLEY B. PRUSINER FRANK H. STILLINGER DAVID R. DAVIES ERICH P. IPPEN CHARLES RADDING KARL K. TUREKIAN HERMAN N. EISEN RICHARD V. KADISON JEREMY A. SABLOFF DON C. WILEY ANTHONY S. FAUCI ALFRED G. KNUDSON PAUL R. SCHIMMEL PETER G. WOLYNES NINA FEDOROFF ROGER KORNBERG AARON J. SHATKIN ROBERT H. WURTZ WALTER M. FITCH

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Copyr-ight: Volumes 90-96, copyright ? 1993-1999 by THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, all rights reserved; Volumes 1-89, copyright as a collective work only [author(s) retains copyright to individual articles]. Requests for Permission: Address requests to reproduce material published in Volumes 1-89 to the original author(s); address other requests to the PNAS Permissions Office, 2101 Constitution Avenue, NW, Washington, DC 20418 USA, FAX 1-202-334-2739. Please cite the exact material to be reprinted and state specifically where it will be used. Photocopies: The journal is registered with the Copyright Clearance Center (CCC), 222 Rosewood Drive, Danvers, MA 01923 USA, FAX 1-978-750-4470. Authorization to photocopy items for the internal or personal use of specific clients is granted by THE NATIONAL ACADEMY OF SCIENCES provided that the proper fee is paid directly to CCC. Microforms: Contact University Microfilms Inc., P.O. Box 1346, Ann Arbor, MI 48106-1346 USA. This journal is printed on acid-free paper effective with Volume 84, Issue l.

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Page 5: Front Matter

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Page 6: Front Matter

PROCEEDINGS OF THE

NATIONAL ACADEMY OF SCIENCES

OF THE UNITED STATES OF AMERICA

January 19, 1999 Volume 96, Number 2 pp. 319-796

Table of Contents

Commentaries

Plugging the leaks 319-321 Daniel A. Goodenough * See companion article on page 511

No milk today (my Hox have gone away) 322-323 Denis Duboule * See companion article on page 541

Development of optimized vectors for gene therapy 324-326 Gary J. Nabel * See companion article on page 355

Genetic code origins: Experiments confirm 327-328 phylogenetic predictions and may explain a puzzle

Paul Schimmel and Lluis Ribas de Pouplana * See companion article on page 418

Protein kinase A takes center stage in 329-331 ATP-dependent insulin secretion

Thomas A. Blanpied and George J. Augustine * See companion article on page 760

Extending the size limit of protein nuclear 332-334 magnetic resonance

Hongtao Yu * See companion article on page 388

The fyn art of N-methyl-D-aspartate 335-337 receptor phosphorylation

Carlo Sala and Morgan Sheng * See companion article on page 435

Inaugural Article

Groucho and dCtBP mediate separate pathways of 535-540 transcriptional repression in the Drosophila embryo

Hailan Zhang and Michael Levine

Physical Sciences

CHEMISTRY

Ultrafast electron diffraction and direct observation of 338-342 transient structures in a chemical reaction

Jianming Cao, Hyotcherl Ihee, and Ahmed H. Zewail

Biological Sciences

BIOCHEMISTRY

Persistence of an alternate chromatin structure at 343-348 silenced loci in vitro

Athar Ansari and Marc R. Gartenberg

Tissue-specific and developmental stage-specific DNA 349-354 binding by a mammalian SWI/SNF complex associated with human fetal-to-adult globin gene switching

David O'Neill, John Yang, Hediye Erdjument-Bromage, Katherine Bornschlegel, Paul Tempst, and Arthur Bank

iii

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Page 7: Front Matter

Contents Adenovirus-mediated regulable target gene expression 355-360 in vivo

Mark M. Burcin, Gudrun Schiedner, Stefan Kochanek, Sophia Y. Tsai, and Bert W. O'Malley U See Commentary on page 324

Silicatein filaments and subunits from a marine 361-365 sponge direct the polymerization of silica and silicones in vitro

Jennifer N. Cha, Katsuhiko Shimizu, Yan Zhou, Sean C. Christiansen, Bradley F. Chmelka, Galen D. Stucky, and Daniel E. Morse

Site-directed hydroxyl radical probing of 30S 366-370 ribosomal subunits by using Fe(II) tethered to an interruption in the 16S rRNA chain

Raymond R. Samaha, Simpson Joseph, Bonnie O'Brien, Thomas W. O'Brien, and Harry F. Noller

Antitumor activity of mannan-binding protein in vivo 371-375 as revealed by a virus expression system: Mannan-binding protein-dependent cell-mediated cytotoxicity

Yong Ma, Kazuhide Uemura, Shogo Oka, Yasunori Kozutsumi, Nobuko Kawasaki, and Toshisuke Kawasaki

The Medl subunit of the yeast mediator complex 376-381 is involved in both transcriptional activation and repression

Darius Balciunas, Cecilia Galman, Hans Ronne, and Stefan Bj6rklund

Interaction between cyclin-dependent kinases and 382-387 human papillomavirus replication-initiation protein El is required for efficient viral replication

Tianlin Ma, Nianxiang Zou, Biing Yuan Lin, Louise T. Chow, and J. Wade Harper

Chemical ligation of folded recombinant proteins: 388-393 Segmental isotopic labeling of domains for NMR studies

Rong Xu, Brenda Ayers, David Cowburn, and Tom W. Muir U See Commentary on page 332

Myosin I heavy chain kinase: Cloning of the 394-399 full-length gene and acidic lipid-dependent activation by Rac and Cdc42

Hanna Brzeska, Rachel Young, Ulla Knaus, and Edward D. Korn

Asparagine and glutamine rotamers: B-factor cutoff 400-405 and correction of amide flips yield distinct clustering

Simon C. Lovell, J. Michael Word, Jane S. Richardson, and David C. Richardson

A f-1,3-N-acetylglucosaminyltransferase with 406-411 poly-N-acetyllactosamine synthase activity is structurally related to 0-1,3-galactosyltransferases

Dapeng Zhou, Andr6 Dinter, Ricardo Guti6rrez Gallego, Johannis P. Kamerling, Johannes F. G. Vliegenthart, Eric G. B3erger, and Thierry Hennet

Persistent membrane association of activated and 412-417 depalmitoylated G protein ab subunits

Chunfa Huang, Joseph A. Duncan, Alfred G. Gilman, and Susanne M. Mumby

Substrate recognition by class I lysyl-tRNA 418-423 synthetases: A molecular basis for gene displacement

Michael Ibba, Heather C. Losey, Yutaka Kawarabayasi, Hisasi Kikuchi, Shipra Bunjun, and Dieter Soll * See Commentary on page 327

Expression of the p48 xeroderma pigmentosum gene 424-428 is p53-dependent and is involved in global genomic repair

Byung Joon Hwang, James M. Ford, Philip C. Hanawalt, and Gilbert Chu

Involvement of regulatory and catalytic subunits of 429-434 phosphoinositide 3-kinase in NF-KB activation

Christophe B6raud, William J. Henzel, and Patrick A. Baeuerle

PSD-95 promotes Fyn-mediated tyrosine 435-440 phosphorylation of the N-methyl-D-aspartate receptor subunit NR2A

Tohru Tezuka, Hisashi Umemori, Tetsu Akiyama, Shigetada Nakanishi, and Tadashi Yamamoto * See Commentary on pacge 335

The Cdc6p nucleotide-binding motif is required for 441-446 loading Mcm proteins onto chromatin

Michael Weinreich, Chun Liang, and Bruce Stillman

The enzymological basis for resistance of herpesvirus 447-452 DNA polymerase mutants to acyclovir: Relationship to the structure of a-like DNA polymerases

Lin Huang, Keiko Kumura Ishii, Harmon Zuccola, Amy M. Gehring, Charles B. C. Hwang, James Hogle, and Donald M. Coen

BIOPHYSICS

Trapping of megabase-sized DNA molecules during 453-458 agarose gel electrophoresis

Sergio Gurrieri, Steven B. Smith, and Carlos Bustamante

Intra-tRNA distance measurements for nucleocapsid 459-464 protein-dependent tRNA unwinding during priming of HIV reverse transcription

Barden Chan, Kristin Weidemaier, Wai-Tak Yip, Paul F. Barbara, and Karin Musier-Forsyth

Observation of transient disorder during myosin 465-470 subfragment-1 binding to actin by stopped-flow fluorescence and millisecond time resolution electron cryomicroscopy: Evidence that the start of the crossbridge power stroke in muscle has variable geometry

Matthew Walker, Xue-Zhong Zhang, Wei Jiang, John Trinick, and Howard D. White

Cell adhesion force microscopy 471-476 G. Sagvolden, I. Giaever, B. 0. Pettersen, and J. Feder

Kinetic evidence for an on-pathway intermediate in 477-480 the folding of cytochrome c

Yawen Bai

iv

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Page 8: Front Matter

Contents

Evidence for microscopic, long-range hydration forces 481-486 for a hydrophobic amino acid

Alexander Pertsemlidis, Alan K. Soper, Jon M. Sorenson, and Teresa Head-Gordon

Magic angle spinning NMR of the protonated 487-492 retinylidene Schiff base nitrogen in rhodopsin: Expression of 15N-lysine- and 13C-glycine-labeled opsin in a stable cell line

Markus Eilers, Philip J. Reeves, Weiwen Ying, H. Gobind Khorana, and Steven 0. Smith

CELL BIOLOGY

A direct role for arrestins in desensitization of the 493-498 luteinizing hormone/choriogonadotropin receptor in porcine ovarian follicular membranes

Sutapa Mukherjee, Krzysztof Palczewski, Vsevolod Gurevich, Jeffrey L. Benovic, J. Paul Banga, and Mary Hunzicker-Dunn

A Gs, mutant designed to inhibit receptor signaling 499-504 through G,

Taroh liri, Sean M. Bell, Thomas J. Baranski, Toshiro Fujita, and Henry R. Bourne

Androgens regulate bone resorption activity of 505-510 isolated osteoclasts in vitro

Larry Pederson, Matthew Kremer, Jeffrey Judd, David Pascoe, Thomas C. Spelsberg, B. Lawrence Riggs, and Merry Jo Oursler

Claudin multigene family encoding 511-516 four-transmembrane domain protein components of tight junction strands

Kazumasa Morita, Mikio Furuse, Kazushi Fujimoto, and Shoichiro Tsukita * See Commentary on page 319

Moel, a conserved protein in Schizosaccharornyces 517-522 pombe, interacts with a Ras effector, Scdl, to affect proper spindle formation

Chang-rung Chen, Ying-chun Li, Jing Chen, Ming-chin Hou, Piyi Papadaki, and Eric C. Chang

DEVELOPMENTAL BIOLOGY

Synergistic activities of multiple phosphotyrosine 523-528 residues mediate full signaling from the Drosophila Torso receptor tyrosine kinase

Urte Gayko, Vaughn Cleghon, Terry Copeland, Deborah K. Morrison, and Norbert Perrimon

Characterization of otoconin-95, the major protein of 529-534 murine otoconia, provides insights into the formation of these inner ear biominerals

Elisabeth Verpy, Michel Leibovici, and Christine Petit

Groucho and dCtBP mediate separate pathways of 535-540 transcriptional repression in the Drosophila embryo

Hailan Zhang and Michael Levine

Paralogous mouse Hox genes, Hoxa9, Hoxb9, and 541-546 Hoxd9, function together to control development of the mammary gland in response to pregnancy

Feng Chen and Mario R. Capecchi * See Commentaty on page 322

Retinoid X receptors are essential for early mouse 547-551 development and placentogenesis

Olivia Wendling, Pierre Chambon, and Manuel Mark

MyoR: A muscle-restricted basic helix-loop-helix 552-557 transcription factor that antagonizes the actions of MyoD

Jianrong Lu, Robert Webb, James A. Richardson, and Eric N. Olson

Isolation and expression of a Pax-6 gene in the 558-563 regenerating and intact Planarian Dugesia(G)tigrina

P. Callaerts, A. M. Munoz-Marmol, S. Glardon, E. Castillo, H. Sun, W.-H. Li, W. J. Gehring, and E. Salo

Functional analysis of an eye specific enhancer of the 564-569 eyeless gene in Drosophila

Bernd Hauck, Walter J. Gehring, and Uwe Walldorf

ECOLOGY

Experimental demonstration that offspring sex ratio 570-573 varies with maternal condition

R. G. Nager, P. Monaghan, R. Griffiths, D. C. Houston, and R. Dawson

EVOLUTION

New estimates of the rates and effects of mildly 574-579 deleterious mutation in Drosophila melanogaster

James D. Fry, Peter D. Keightley, Stefanie L. Heinsohn, and Sergey V. Nuzhdin

Microsporidia are related to Fungi: Evidence from the 580-585 largest subunit of RNA polymerase II and other proteins

Robert P. Hirt, John M. Logsdon, Jr., Bryan Healy, Michael W. Dorey, W. Ford Doolittle, and T. Martin Embley

GENETICS

Gender-specific frequency of backgrouLnd somatic 586-591 mutations at the hypoxanthine phosphoribosyltransferase locus in cord blood T lymphocytes from preterm newborns

Makoto Yoshioka, Pamela M. Vacek, Tina Poseno, Robert Silver, and Barry A. Finette

Human artificial chromosomes generated by 592-597 modification of a yeast artificial chromosome containing both human alpha satellite and single-copy DNA sequences

Karla A. Henning, Elizabeth A. Novotny, Sheila T. Compton, Xin-Yuan Guan, Pu P. Liu, and Melissa A. Ashlock

The human LARGE gene from 22ql2.3-ql3.1 is a 598-603 new, distinct member of the glycosyltransferase gene family

Myriam Peyrard, Byal Seroussi, Ann-Christin Sandberg-Nordqvist, Ya-Gang Xie, Fei-Yu Han, Ingegerd Franisson, John Collins, Jan Dunham, Maria Kost-Alimova, Stephan Imreh, and Jan P. Dumaniski

v

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Page 9: Front Matter

Contents Functional dissection of the transmitter module of the 604-609 histidine kinase NtrB in Escherichia coli

Gunter Kramer and Verena Weiss

Development of the arbitrarily primed- 610-615 representational difference analysis method and chromosomal mapping of isolated high throughput rat genetic markers

Yukinari Yoshida, Toshikazu Ushijima, Satoshi Yamashita, Kohzoh Imai, Takashi Sugimura, and Minako Nagao

DNA methylation in transcriptional repression of two 616-621 differentially expressed X-linked genes, GPC3 and SYBLI

Reid Huber, R. Scott Hansen, Maria Strazzullo, Gina Pengue, Richard Mazzarella, Michele D'Urso, David Schlessinger, Giuseppe Pilia, Stanley M. Gartler, and Maurizio D'Esposito

IMMUNOLOGY

Costimulatory signals are required for induction of 622-627 transcription factor Nur77 during negative selection of CD4+CD8+ thymocytes

Derk Amsen, Conchi Revilla Calvo, Barbara A. Osborne, and Ada M. Kruisbeek

Role of decay-accelerating factor in regulating 628-633 complement activation on the erythrocyte surface as revealed by gene targeting

Xiujun Sun, Colin D. Funk, Chengjun Deng, Arvind Sahu, John D. Lambris, and Wen-Chao Song

Copolymer 1 acts against the immunodominant 634-639 epitope 82-100 of myelin basic protein by T cell receptor antagonism in addition to major histocompatibility complex blocking

Rina Aharoni, Dvora Teitelbaum, Ruth Arnon, and Michael Sela

Generation of native bovine mAbs by phage display 640-645 P. M. O'Brien, R. Aitken, B. W. O'Neil, and M. S. Campo

cDNA cloning of FRIL, a lectin from Dolichos lablab, 646-650 that preserves hematopoietic progenitors in suspension culture

Gabriella Colucci, Jeffrey G. Moore, Michael Feldman, and Maarten J. Chrispeels

Mechanisms for induction of acquired host immunity 651-656 by neutrophil peptide defensins

James W. Lillard, Jr., Prosper N. Boyaka, Oleg Chertov, Joost J. Oppenheim, and Jerry R. McGhee

MEDICAL SCIENCES

Nitric oxide synthase in cardiac sarcoplasmic reticulum 657-662 Kai Y. Xu, David L. Huso, Ted M. Dawson, David S. Bredt, and Lewis C. Becker

CXCR4 utilization is sufficient to trigger CD4+[ T cell 663-668 depletion in HI V-i-infected human lymphoid tissue

Michael L. Penn, Jean-Charles Grivel, Birgit Schramm, Mark A. Goldsmith, and Leonid Margolis

Selective induction of apoptosis by the cytotoxic 669-673 analog AN-207 in cells expressing recombinant receptor for luteinizing hormone-releasing hormone

Daniel C. Danila, Andrew V. Schally, Attila Nagy, and Joseph M. Alexander

Leptin inhibits insulin gene transcription and reverses 674-679 hyperinsulinemia in leptin-deficient ob/ob mice

Jochen Seufert, Timothy J. Kieffer, and Joel F. Habener

Expression of dominant-negative and mutant isoforms 680-685 of the antileukemic transcription factor Ikaros in infant acute lymphoblastic leukemia

Lei Sun, Nyla Heerema, Lisa Crotty, Xian Wu, Christopher Navara, Alexei Vassilev, Martha Sensel, Gregory H. Reaman, and Fatih M. Uckun

The plasminogen activator inhibitor-2 gene is not 686-691 required for normal murine development or survival

Kristiann M. Dougherty, Julia M. Pearson, Angela Y. Yang, Randal J. Westrick, Mark S. Baker, and David Ginsburg

Synthesis and biological evaluation of antagonists of 692-697 growth hormone-releasing hormone with high and protracted in vivo activities

J6zsef L. Varga, Andrew V. Schally, Valer J. Csernus, Marta Zarandi, Gabor Halmos, Kate Groot, and Zoltan R6kasi

Permissive role of thrombopoietin and granulocyte 698-702 colony-stimulating factor receptors in hematopoietic cell fate decisions in vivo

Ruedi Stoffel, Sandra Ziegler, Nico Ghilardi, Birgit Ledermann, Frederic J. de Sauvage, and Radek C. Skoda

Rapid production of specific vaccines for lymphoma 703-708 by expression of the tumor-derived single-chain Fv epitopes in tobacco plants

Alison A. McCormick, Monto H. Kumagai, Kathleen Hanley, Thomas H. Turpen, Itzhak Hakim, Laurence K. Grill, Daniel Tus6, Shoshana Levy, and Ronald Levy

MICROBIOLOGY

A role for RNA helicase A in post-transcriptional 709-714 regulation of HIV type 1

Junzhou Li, Hengli Tang, Tina-Marie Mullen, Christopher Westberg, Thipparthi R. Reddy, David W. Rose, and Flossie Wong-Staal

Killing of Caenorhabditis elegans by Pseudomonas 715-720 aeruginosa used to model mammalian bacterial pathogenesis

Man-Wah Tan, Shalina Mahajan-Miklos, and Frederick M. Ausubel

NEUROBIOLOGY

Purification of serine racemase: Biosynthesis of the 721-725 neuromodulator D-serine

Herman Wolosker, Kevin N. Sheth, Masaaki Takahashi, Jean-Pierre Mothet, Roscoe 0. Brady, Jr., Christopher D. Ferris, and Solomon H. Snyder

vi

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Page 10: Front Matter

Contents

Lack of tactile pain (allodynia) in lipocalin-type 726-730 prostaglandin D synthase-deficient mice

Naomi Eguchi, Toshiaki Minami, Naoki Shirafuji, Yoshihide Kanaoka, Takashi Tanaka, Akihisa Nagata, Nobuaki Yoshida, Yoshihiro Urade, Seiji Ito, and Osamu Hayaishi

Failure of spinal cord oligodendrocyte development in 731-735 mice lacking neuregulin

Timothy Vartanian, Gerald Fischbach, and Robert Miller

Morphological, physiological, and biochemical changes 736-741 in rhodopsin knockout mice

J. Lem, N. V. Krasnoperova, P. D. Calvert, B. Kosaras, D. A. Cameron, M. Nicol6, C. L. Makino, and R. L. Sidman

Endoplasmic reticulum and trans-Golgi network 742-747 generate distinct populations of Alzheimer ,3-amyloid peptides

Jeffrey P. Greenfield, Julia Tsai, Gunnar K. Gouras, Bing Hai, Gopal Thinakaran, Frederic Checler, Sangram S. Sisodia, Paul Greengard, and Huaxi Xu

Orexins, orexigenic hypothalamic peptides, interact 748-753 with autonomic, neuroendocrine and neuroregulatory systems

Yukari Date, Yoichi Ueta, Hiroshi Yamashita, Hideki Yamaguchi, Shigeru Matsukura, Kenji Kangawa, Takeshi Sakurai, Masashi Yanagisawa, and Masamitsu Nakazato

Pseudechetoxin: A peptide blocker of cyclic 754-759 nucleotide-gated ion channels

R. Lane Brown, Tammie L. Haley, Karen A. West, and John W. Crabb

PHYSIOLOGY

Post-priming actions of ATP on Ca2-1-dependent 760-765 exocytosis in pancreatic beta cells

Noriko Takahashi, Takashi Kadowaki, Yoshio Yazaki, Graham C. R. Ellis-Davies, Yasushi Miyashita, and Haruo Kasai U See Commentaly on page 329

PLANT BIOLOGY

Involvement of specific calmodulin isoforms in 766-771 salicylic acid-independent activation of plant disease resistance responses

Won Do Heo, Sang Hyoung Lee, Min Chul Kim, Jong Cheol Kim, Woo Sik Chung, Hyun Jin Chun, Kyoung Joo Lee, Chan Young Park, Hycong Cheol Park, Ji Young Choi, and Moo Je Cho

Selectable viruses and altered susceptibility mutants in 772-777 Arabidopsis thaliania

Steven A. Whitham, Miki L. Yamamoto, and James C. Carrington

A cytochrome b5 is required for full activity of 778-783 flavonoid 3',5'-hydroxylase, a cytochrome P450 involved in the formation of blue flower colors

Nick de Vetten, Jeroen ter Horst, Henk-Peter van Schaik, Albertus de Boer, Joseph Mol, and Ronald Koes

The evolutionary origin of the protein-translocating 784-789 channel of chloroplastic envelope membranes: Identification of a cyanobacterial homolog

Sigrun Reumann, Jennifer Davila-Aponte, and Kenneth Keegstra

POPULATION BIOLOGY

The effect of antibody-dependent enhancement on the 790-794 transmission dynamics and persistence of multiple-strain pathogens

Neil Ferguson, Roy Anderson, and Sunetra Gupta

CORRECTIONS

COMMENTARY Lignification of plant cell walls: Impact of 795 genetic manipulation

Hans-Joachim G. Jung and Weiting Ni

BIOCHEMISTRY Requirement of GM2 ganglioside activator for 795 phospholipase D activation

Shun-ichi Nakamura, Toshihiro Akisue, Hitoshi Jinnai, Tomohiro Hitomi, Sukumar Sakar, Noriko Miwa, Taro Okada, Kimihisa Yoshida, Shun'ichi Kuroda, Ushio Kikkawa, and Yasutomi Nishizuka

CELL BIOLOGY Impairing follicle-stimulating hormone (FSH) 795 signaling in vivo: Targeted disruption of the FSH receptor leads to aberrant gametogenesis and hormonal imbalance

Andree Dierich, M. Ram Sairam, Lucia Monaco, Gian Maria Fimia, Anne Gansmuller, Marianne LeMeur, and Paolo Sassone-Corsi

Efficient construction of a large nonimmune phage 795 antibody library: The production of high-affinity human single-chain antibodies to protein antigens

Michael D. Sheets, Peter Amersdorfer, Ricarda Finnem, Peter Sargent, Ericka Lindqvist, Robert Schier, Grete Hemingsen, Cindy Wong, John C. Gerhart, and James D. Marks

AUTHOR INDEX ix-x

INFORMATION FOR AUTHORS xi-xiii

SIZING WORKSHEET xiv

DOCUMENTATION REPORT xv

COPYRIGHT ASSIGNMENT FORM xvi

CLASSIFIED ADVERTISEMENTS xvii

Cover photograph: Petunia flower showing the color change caused by a transposon insertion in the difF gene blocking the expression of cytochrome b5. The absence of cytochrome b5 reduces the activity of a cytochrome P450 enzyme that hydroxylates precursors of anthocyanin pigments, resulting in a reddish flower color. Transposon excisions that restore cytochrome b5 expression cause the formation of dull-gray colored sectors and spots in which hydroxylation is restored. This provides direct proof that cytochrome b5 proteins stimulate the activity of specific cytochrome P450s, as described by de Vetten et al. on pages 778-783 in this issue.

vii

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Page 11: Front Matter

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