JOURNAL OF BACTERIOLOGY

VOLUME 140 0 NUMBER 2 * NOVEMBER 1979 EDITORIAL BOARD Simon Silver, Editor-in-Chief (1982) Washington University, St. Louis, Mo. Stanley C. Holt, Editor (1982) Elizabeth McFall, Editor (1980) Allen T. Phillips, Editor (1980) University of Massachusetts, Amherst New York University, New York, N. Y. Pennsylvania State Universit., University Park Samuel Kaplan, Editor (1983) Donald P. Nierlich, Editor (1982) University of Illinois, Urbana University of California, Los Angeles Paul S. Sypherd (1984) UniversitY of California. Irvine Mark Achtman (1979) J. F. Gardner (1981) Martin Pato (1981) Janes N. Adams (1979) Bijan K. Ghosh (1981) Olga Pierucci (1981) Nina Agabian (1980) David T. Gibson (1981) Patrick J. Piggot (1981) James Akagi (1979) Harry E. Gilleland, Jr. (1979) William S. Reznikoff (1979) David Apirion (1979) Helen Greer (1980) Palmer Rogers (1981) Arthur 1. Aronson (1979) Walter R. Guild (1981) Antonio H. Romano (1979) Gad Avigad (1980) Tadayo Hashimoto (1979) Burton Rosan (1941) Stephen D. Barbour (1979) Gerald L. Hazelbauer (1981) Barry P. Rosen (1980) Jeffrey M. Becker (1980) Joy Hochstadt (1980) Robert Rownd (1980) Claire M. Berg (1980) Bruce Holloway (1979) Harold L. Sadoff (1980) Douglas E. Berg (1980) Philip Hylemon (1979) Milton H. Saier, Jr. (1979) Richard S. Berk (1980) Karin Ihler (1981) Abigail Salyers (1981) Harriet Bernheimer (1980) Joseph Inselburg (1981) Gene A. Scarborough (1979) Dale C. Birdsell (1981) Robert J. Kadner (1979) June Scott (1981) Edwin Boatman (1980) Eva R. Kashket (1981) Irwin H. Segel (1979) Winfried Boos (1979) Donald L. Keister (1980) Jane K. Setlow (1981) H. D. Braymer (1979) David E. Kennell (1980) Peter Setlow (1981) Jean Brenchley (1980) Bruce C. Kline (1980) J. A. Shapiro (1979) Patrick J. Brennan (1981) Jordan Konisky (1981) David Sherratt (1980) George H. Brownell (1980) Thomas G. Lessie (1979) Douglas W. Smith (1980) Richard 0. Burns (1980) K. Brooks Low (1979) Issar Smith (1981) A. M. Cbakrabarty (1980) Donald R. Lueking (1981) Dieter G. Soil (1979) Peter J. Chapman (1979) Carolyn MacGregor (1981) A. L. Sonenshein (1980) G. William Claus (1979) P. T. Magee (1980) Eric J. Stanbridge (1981) Don B. Clewell (1980) Manley Mandel (1981) Dwight Stinnett (1979) John W. Costerton (1980) Robert E. Marquis (1979) Roger Storck (1981) John E. Cronan, Jr. (1980) Barry Marrs (1981) Stanley Streicher (1980) Lolita Daneo-Moore (1981) Neil H. Mendelson (1981) John L. Swanson (1981) Dana L. Diedrich (1980) Sally Ann Meyer (1981) Robert L. Switzer (1979) Walter J. Dobrogosz (1979) Gene E. Mchaels (1980) F. Robert Tabita (1981) Patrick R. Dugan (1980) Robert V. Miller (1981) Kenneth N. Timmis (1981) Charles Earhart (1981) Walter G. Niehaus, Jr. (1981) Bonnie M. Tyler (1981) A. Eisenstark (1979) Hiroshi Nikaido (1981) James A. Wechsler (1981) Alan D. Elbein (1979) John H. Nordin (1979) David White (1980) David P. Fan (1981) Michio Oishi (1980) Clifford A. Woolfolk (1979) Walton L. Fangman (1981) Sunil Palchaudhuri (1979) Henry C. Wu (1981) W. R. Finnerty (1979) Leo Parks (1979) Howard Zalkin (1979) John D. Foulds (1979) Robert A. Day, Managing Editor Gisella Pollock, Assistant Managing Editor Linda M. Illig, Production Editor 1913 1 St., NW, Washington, DC 20006 EX OFFICIO Willis A. Wood, President (1979-19804 Albert Balows, President-Elect (1979-1980) J. Mehsen Joseph, Secretary Brinton M. Miller, Treasurer The Journal of Bacteriology (ISSN 0021-9193). a publication Second class postage paid at Washington. DC 20006. and at of the American Society for Microbiology, 1913 I St.. N.W.. additional mailing offices. Washington, D.C. 20006, is devoted to the advancement and Made in the United States of America. dissemination of fundamental knowledge concerning bacteria Copyright ©) 1979. American Society for Microbiology. and other microorganisms. Instructions to Authors are published All Rights Reserved. in the January issue each year. The Journal is published monthly, and the twelve numbers are divided into four volumes per year. The code at the top of the first page of an article in thisjournal The nonmnember subscription price is $115 per year. Single copies indicates the copyright owner's consent that copies of the article are $10. The member subscription price is $22 per year. Corre- may be made for personal use. or for personal use of specific spondence relating to subscriptions. reprints, defective copies. clients. This consent is given on the condition. however. that the availability of back issues, lost or late proofs. disposition of copier pay the stated per-copy fee through the Copyright Clear- submitted manuscripts. and general editorial matters should be ance Center. Inc.. P.O. Box 765. Schenectady. New York 12301. directed to the ASM Publications Office. 1913 1 St.. N.W.. for copying beyond that permitted by Sections 107 and 108 of Washington, D.C. 20006 (area 202 833-9680). the U.S. Copyright Law. This consent does not extend to other kinds of copying, such as copying for general distribution, for E3 * : 1 Mt'IR tir ItJ L . M.ti" I advertising or promotional purposes. for creating new collective works, or for resale. Author Index Aguilar, Juan, 320 Goldenbaum, Paul E., 459 Moran, Charles P., Jr., 742 Alderman, Edward M., 369 Goman, Michael, 479 Morrison, D. A., 655 Alexander, James K., 643 G6mez-Eichelmann, M. C., 574 An, Gynheung, 400 Gorrell, T. E., 687 Nisen, Perry, 588 Anderson, James J., 351 Gotto, John W., 327 Nishino, Toyokazo, 671 Aschhoff, H. J., 408 Goulian, Mehran, 333 Novotny, Charles P., 525 Ausubel, Frederick M., 597 Griuo, John F., 508 Oertel, Wolfgang, 333 Begg, K. J., 388 Hall, Gail A., 459 Oxender, Dale L., 351 Belaich, J. P., 377 Hall, Michael N., 342 Bender, Robert A., 612 Hasan, Syed M., 745 Palmer, Linda, 671 Bird, Stephanie C., 597 Hastings, J. W., 532 Pato, Martin L., 518 Blakemore, R. P., 720 Heller, Klaus B., 395 Perlak, Frederick J., 699 Boronat, Albert, 320 Henner, Dennis J., 555 Peskin, Adele P., 597 Bott, Kenneth F., 742 Henry, Susan, 612 Purucker, Mary, 588 Brandriss, Marjorie C., 498, 504 Hoburg, A., 408 Braun, Phyllis C., 666 Hsu, Steven C., 547 Rezee, Anna, 415 Brawley, James V., 649 Huisman, Olivier, 381 Rittenberg, Sydney C., 620 Burke, John M., 525 Roa, Michele, 680 Janssen, Kaaren A., 597 Rosen, Barry P., 745 Calderone, R. A., 666 Jeffery, William R., 490 Rosson, Reinhardt A., 620 Chiu, Teh-hsing, 547 Jensen, Roy A., 580 Rubens, Craig E., 713 Colletti, Clare, 452 Junker, Dianne D., 547 Conti, S. F., 634 Salmond, G. P. C., 388 Contreras, Inez, 612 Kappeli, O., 707 Sargentini, Neil J., 436 Cozzarelli, Nicholas R., 424 Kenkel, Thomas, 543 Savi6, Dragutin J., 311 Cruden, Diana Loeb, 687 Kersten, H., 408 Scaife, John, 479 Kinney, Dennis M., 607 Shalit, Peter, 671 Dabbs, Eric R., 734 Koshland, Daniel E., Jr., 567 Shapiro, Lucille, 588, 612 Danilenko, Valery N., 359 Kreuzer, Kenneth N., 424 Silhavy, Thomas J., 342 D'Ari, Richard, 381 Smith, Kendric C., 436 de Graaf, Frits K., 415 LaMarre, Arthur G., 634 Steinberg, William, 555 Dermoun, Z., 377 'Lawrence, A., 445 Straley, Susan C., 634 DUlls, Stevens S., 369 Lawrence, Lowell J., 634 Dobrogosz, Walter J., 369 Linn, Thomas, 479 Tabita, F. Robert, 327, 452 Donachie, W. D., 388 Lomovskaya, Natalie D., 359 Taylor, Barry L., 567 Durbin, Karen J., 597 Lutkenhaus, J. F., 388 Thorne, Curtis B., 699 Trela, John M., 543 Eberle, H., 445 Magasanik, Boris, 498, 504 Troost, Thomas R., 359 Evans, I. M., 445 Makemson, J. C., 532 Mancuso, David J., 547 Van Baalen, Chase, 327 Farrar, W. Edmund, Jr., 713 Manderschied, U., 408 van Tiel-Menkveld, Gerda J., 415 Fazel, Akram M., 580 Mannarelli, B., 655 Vicente, M., 388 Ferro, Adolph J., 649 Mansour, James, 612 Finnerty, W. R., 707 Maratea, D., 720 Waber, Lewis J., 468 Fives-Taylor, Paula, 525 Margolskee, Robert F., 597 Wake, R. G., 730 Forrest, N., 445 Markovetz, A. J., 687 Warrick, Hans M., 567 Foster, John W., 607 Martinez-Salas, E., 388 Wehr, Timothy, 671 Friesen, James D., 400 McGinness, T., 730 Wilson, James M., 351 McNeill, William F., 713 Wilson, T. Hastings, 395 Gallant, Jonathan, 671 Melton, Thoyd, 369 Wolfe, R. S., 720 Gassen, H. G., 408 Mendelsohn, Cathy L., 699 Wood, Harland G., 468 George, Jacqueline, 381 Miller, Jeffrey B., 567 Wr6blewski, Henri, 738 Gibson, Jane, 508 Moat, Albert G., 607