| Poleward shifts in geographical ranges of butterfly species associated with regional warming | Nature | 1999 | 1.6K |
| Birds extend their ranges northwards | Nature | 1999 | 581 |
| Detergent-insoluble glycosphingolipid/cholesterol-rich membrane domains, lipid rafts and caveolae (review) | Molecular Membrane Biology | 1999 | 320 |
| The spatial structure of populations | Journal of Animal Ecology | 1999 | 291 |
| Nucleoside transporters: molecular biology and implications for therapeutic development | Trends in Molecular Medicine | 1999 | 277 |
| Climate and habitat availability determine 20th century changes in a butterfly's range margin | Proceedings of the Royal Society B: Biological Sciences | 1999 | 243 |
| Rapid folding with and without populated intermediates in the homologous four-helix proteins Im7 and Im9 | Journal of Molecular Biology | 1999 | 230 |
| Tansley Review No. 107. Heterocyst and akinete differentiation in cyanobacteria | New Phytologist | 1999 | 212 |
| Gemcitabine transport in xenopus oocytes expressing recombinant plasma membrane mammalian nucleoside transporters | Journal of the National Cancer Institute | 1999 | 201 |
| Evolution of flight morphology in a butterfly that has recently expanded its geographic range | Oecologia | 1999 | 189 |
| Cleavage of Alzheimer's amyloid precursor protein by alpha-secretase occurs at the surface of neuronal cells | Biochemistry | 1999 | 163 |
| Visualization of dioxygen bound to copper during enzyme catalysis | Science | 1999 | 154 |
| Structural and mechanistic basis of immunity toward endonuclease colicins | Nature Structural Biology | 1999 | 148 |
| Fish swimming: patterns in muscle function | Journal of Experimental Biology | 1999 | 148 |
| Old World fruit bats can be long–distance seed dispersers through extended retention of viable seeds in the gut | Proceedings of the Royal Society B: Biological Sciences | 1999 | 134 |
| Identification of five species of the Anopheles dirus complex from Thailand, using allele-specific polymerase chain reaction | Medical and Veterinary Entomology | 1999 | 130 |
| Crystal structure of intact elongation factor EF-Tu from Escherichia coli in GDP conformation at 2.05 A resolution | Journal of Molecular Biology | 1999 | 124 |
| Identification of the Nef-associated kinase as p21-activated kinase 2 | Current Biology | 1999 | 119 |
| Saturation of the endoplasmic reticulum retention machinery reveals anterograde bulk flow | Plant Cell | 1999 | 118 |
| Dimensions and moment arms of the hind- and forelimb muscles of common chimpanzees (Pan troglodytes) | American Journal of Physical Anthropology | 1999 | 118 |
| Anticipating endoplasmic reticulum stress. A novel early response before pathogenesis-related gene induction | Plant Cell | 1999 | 113 |
| The distribution of plant species in urban vegetation fragments | | 1999 | 113 |
| An in vitro study of the use of photodynamic therapy for the treatment of natural oral plaque biofilms formed in vivo | Journal of Photochemistry and Photobiology B: Biology | 1999 | 110 |
| The crystal structure of Escherichia coli class II fructose-1, 6-bisphosphate aldolase in complex with phosphoglycolohydroxamate reveals details of mechanism and specificity | Journal of Molecular Biology | 1999 | 106 |
| Fish swimming: patterns in muscle function | Journal of Experimental Biology | 1999 | 105 |
