conclusions have important implications for the generation of more detailed models about how different gene products effect their roles in development. While at times this volume reads like a methods notebook, many of the chapters are well written overviews of the experimental basis of their subjects. Unfortunately, the volume as a whole falls short of its intended purpose to illustrate the dynamic nature of developmental genetics at a time when molecular biology is beginning to complement classical genetics and embryology. Perhaps a whole series of 'Primers' would be needed to do justice to the field. Whilst sympathizing with Warren's desire to keep the 'maths' simple, I do feel that in a number of instances the theoretical development could have been carried a little further. For example, the idea of Fourier analysis is carefully introduced and illustrated with the harmonic decomposition of a square wave but nowhere are the basic Fourier transform relationships stated. Physics students in their final year of an undergraduate course will surely be well-versed in Fourier methods and would benefit from a chance to see them in action. This omission is the more unfortunate, since the Fourier description of diffraction is particularly elegant. Indeed, some optics courses are taught largely on Dr lrisli is a Jane Coffin Childs Post-doctoral Fellow in the this basis (see that of the Open University, for Department of Genetics, Cambridge example). It is arguable whether Fourier reconstruction methods should have been covered. Personally, I would have liked to have seen them in an Appendix. PETER MORRIS Certainly, clearer guidance as to suitable source material should have been given. Similar comments apply Physics and the Architecture of Cell Membranes, to the formula used for the wavelength of an electron. by R. C. Warren. Hilger, Bristol, 1987. Pp. xi + 226. Even the most non-physical of life scientists will be aware of the limitations imposed by the velocity of light, and there would have been no harm in giving the In Physics and the Architecture of Cell Membranes, accurate relativistic expression alongside the developWarren develops the basic principles required for an ment of the non-relativistic, low-energy, formula. understanding of the range of physical techniques employed in the elucidation of the static and dynamic The text has been organized according to techproperties of membranes. Two introductory chapters niques. Discussions of particular membrane topics, serve to describe the basic components of membrane e.g. the fluid mosaic model and membrane dynamics, structure and to introduce the specific membranes to be are thus necessarily fragmented. Several crossstudied: namely, the erythrocyte membrane, myelin, comparisons are drawn and Warren does a good job in retinal rod disc membrane, and two examples of comparing thermal analysis, NMR deuterium and ESR membranes in which major protein components form spin probe measurements of membrane dynamics. highly ordered two-dimensional arrays, the purple However, some opportunities have been missed. For membrane and the bladder luminal membrane. The example, there is no mention of the substantial NMR remaining five chapters deal sequentially with the evidence for a non-freezing water component and the following physical techniques: microscopy (X-ray, discussion of the FRAP experiments to establish the electron and neutron), thermal analysis, magnetic fluid mosaic model do not include the classic cell-fusion resonance (ESR and NMR) and optical spectroscopy experiment. (IR, fluorescence and polarimetry). The scope of the The book has a somewhat dated feel. This imbook is intended to encompass a number of underpression is reinforced when one notices that it is the graduate disciplines ranging from biochemistry through biophysics to physics itself. It is also designed first edition of Stryer's Biocheimstiy that is referred to. to meet the needs of the non-specialist postgraduate but In general, there are relatively few recent references is not intended as a research monograph. and some emerging techniques have been omitted. I would also have been happier to have seen a more Warren has certainly achieved most of his declared carefully constructed bibliography. objectives. Theories are logically developed and his Clearly the material selected for presentation admirstyle is clear. The text is generously illustrated with ably suited the needs of Warren's specialist underhelpful examples, some of which are drawn from his graduate course on which this book was based. But, for own research work. One or two relatively minor most disciplines, it falls between two camps. On the considerations do detract from an otherwise admirable one hand, there is insufficient detail for a postgraduate text. Thus, in naming the commonly occurring memtext, on the other, it is too specialized for the majority brane fatty acids, systematic names are not used or of undergraduate teaching programmes. I could not even given parenthetically. This is unfortunate, therefore recommend it for adoption by undergraduate particularly in an undergraduate text, and leads to unnecessary imprecision in describing the location of course organizers. The above criticisms notwithstanddouble bonds in unsaturated lipids. ing, I nevertheless found it to be a 'good read'. It is an 190 Book reviews excellent first point of reference for non-experts wishing to know the basis of a technique and its modus operand! without being immersed in unnecessary detail. It would be a welcome addition to the libraries of the many disciplines involved in the teaching of membrane structure and function. Dr Morris is a Lecturer in Biochemistry in the University of Cambridge TIM HUNT Current Protocols in Molecular Biology, edited by F. M. Ausubel, R. Brent, R. E. Kingston, D. M. Moore, J. A. Smith and K. Struhl. Greene Publishing Associates, New York and Wiley-Interscience, New York and Chichester. Pp. 650. $140 Current Protocols in Molecular Biology is a big red fivehole punched looseleaf collection of methods, protocols and commentary, designed to provide everything there is to know about doing molecular biological research in 1988. The starting volume costs 3140, expensive as such books go, and the publishers offer quarterly update supplements "made possible by desktop publishing" for an additional annual subscription of $95. We have not yet seen what these supplements offer; will they describe new techniques or be revisions of old ones? How many dollars per page? The parent volume contains a card inviting readers to comment on and correct what they find amiss in the present edition, and to suggest what new topics should be included in the future. This is a new departure for the genre, a perfectly rational concept in publishing appropriate to still-moving technology, and a very good idea if it can be made to work. My main reservations concern the size, weight and idiosyncratic pagination of the thing. It weighs 3-3 kilograms (before addition of any supplements) and opens 70cm wide with a 9-3 cm spine. Its 650 pages (according to the publisher's count) are numbered sectionally, 1.0.1 to A.4.4. It is designed to be propped up on the bench like a cookbook by folding back the cover but, however you read it, it occupies a fair amount of benchspace, and I prefer the Cold Spring Harbor Manuals or Methods in Enzymology from a purely aesthetic point of view. Books should be books. Still, Ausubel et al. costs less than a millicurie of O'-[35S]dATP, and contains much good sense. Its protocols are contributed by a wide range of authors, including several distinguished practitioners of the craft, mainly (but not exclusively) from Harvard Medical School or the Hoechst Laboratories at Massachusetts General Hospital. It was pleasant to find a very full explanation of siliconizing glassware by Brian Seed, originator of many a clever molecular trick; there is a first-rate section on enzymes of DNA metabolism by Stan Tabor, inventor of the widely praised Sequenase; Roger Brent wrote most of the sections on growing bacteria and their viruses; Kevin Struhl describes his instant method for doing ligations in lowmelting agarose; Robert Kingston seems to have contributed more of the bread-and-butter protocols than any of the other editors. There is a helpful Appendix with lots of useful items, like how many micrograms of pBR322 make a picomole of ends, and how to make up Tris-HCl solutions. Probably the strongest selling point of this book compared to 'Maniatis' (Maniatis, T., Fritsch, E. F. & Sambrook, J. Molecular Cloning: A Laboratory Manual, Cold Spring Harbor Laboratory, 1982) is that it tells you in much more detail how to perform the routine tasks of subclonings, restriction digestions, ligations, nick translations, kinasings and so on; the things that most people spend most of their time actually doing in molecular biology labs these days. 'Maniatis' was apt to assume that you were already competent at that kind of thing. The commentary sections included by Ausubel et al. are very good, as are the notes to indicate which are the tricky or critical points, where you can afford to be sloppier, and when to break for sleep. Alternative protocols for achieving the same end are quite often presented and explicitly compared, an excellent feature. On the other hand, some sections of the Red Book have serious competition. I would rather have Hanahan's exhaustive account of bacterial transformation, or Huynh, Young & Davis' account of cDNA cloning in A in Glover's DNA Cloning volume I, or Bankier, VVeston & Barrell's accounts of M13 sequencing (Vol. 155, Methods in Enzymology), because the originators of methods usually have much more experience and have fallen into more traps than even quite experienced second-hand users of the same methods. Equally, this book will not replace your (free) copy of the New England Biolabs catalogue, probably the most useful single reference book to have beside you at all times, only 400 grams and a much prettier cover. The publisher's flier claims that the book is comprehensive. This is hardly true. Though it covers a wide range of standard molecular biological techniques, from making libraries starting from DNA or RNA from a wide variety of sources, through DNA sequencing to assaying your promoter in mammalian cells, there is nothing here about yeast, for example, despite editor Struhl's work with Sacchammyces cerevisiae, and the presence of a first-rate yeast lab at Massachusetts General Hospital. This is a pity, given the dearth of readily available practical information on this organism in all the other books. Likewise, the section on mRNA hardly mentions its translation at all, and the only reference to this technique is in the section on hybrid selection of mRNA, which tells you to buy a reticulocyte lysate or wheat germ kit and follow the Book revieivs 191
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