Contents-June 2007

June 2007

Commentary
Keratins: Markers of cell differentiation or regulators of cell differentiation? Milind M Vaidya and Deepak Kanojia	629-634
Perspectives
Sources for Imanishi Kinji’s views of sociality and evolutionary outcomes Pamela J Asquith	635-641
Series
Living in a physical world XI. To twist or bend when stressed Steven Vogel	643-655
What history tells us IX. Z-DNA: when nature is not opportunistic Michel Morange	657-661
Brief communications
Complete nucleotide sequence analysis of Cymbidium mosaic virus Indian isolate: further evidence for natural recombination among potexviruses Ang Rinzing Sherpa, Vipin Hallan, Promila Pathak and Aijaz Asghar Zaidi	663-669
Frequency of infection with A and B supergroup Wolbachia in insects and pests associated with mulberry and silkworm B M Prakash and H P Puttaraju	671-676
Articles
Strong and weak hydrogen bonds in drug–DNA complexes: A statistical analysis Sunil K Panigrahi and Gautam R Desiraju	677-691
Ion pairs in non-redundant protein structures B A Gowri Shankar, R Sarani, Daliah Michael, P Mridula, C Vasuki Ranjani, G Sowmiya, B Vasundhar, P Sudha, J Jeyakanthan, D Velmurugan and K Sekar	693-704
Molecular cloning and expression of the C-terminus of spider flagelliform silk protein from Araneus ventricosus Kwang Sik Lee, Bo Yeon Kim, Yeon Ho Je, Soo Dong Woo, Hung Dae Sohn and Byung Rae Jin	705-712
Diversity and evolutionary relationship of nucleotide binding site-encoding disease-resistance gene analogues in sweet potato (Ipomoea batatas Lam.) Guanshui Chen, Daren Pan, Yifei Zhou, Sheng Lin and Xiangde Ke	713-721
Selenium acts as an insulin-like molecule for the down-regulation of diabetic symptoms via endoplasmic reticulum stress and insulin signalling proteins in diabetes-induced non-obese diabetic mice Daeyoun Hwang, Sujin Seo, Yongkyu Kim, Chuelkyu Kim, Sunbo Shim, Seungwan Jee, Suhae Lee, Mikyong Jang, Minsun Kim, Suyoun Yim, Sang-Koo Lee, Byeongcheol Kang, Insurk Jang and Jungsik Cho	723-735
Synergy between verapamil and other multidrug-resistance modulators in model membranes Madeleine Castaing, Alain Loiseau and Athel Cornish-Bowden	737-746
Diet-dependent depletion of queuosine in tRNAs in Caenorhabditis elegans does not lead to a developmental block Rahul Gaur, Glenn R Björk, Simon Tuck and Umesh Varshney	747-754
Hyaluronidase and collagenase inhibitory activities of the herbal formulation Triphala guggulu Venil N Sumantran, Asavari A Kulkarni, Abhay Harsulkar, Asmita Wele, Soumya J Koppikar, Rucha Chandwaskar, Vishakha Gaire, Madhuri Dalvi and Ulhas V Wagh	755-761
Cytological evidence for population-specific sex chromosome heteromorphism in Palaearctic green toads (Amphibia, Anura) G Odierna, G Aprea, T Capriglione, S Castellano and E Balletto	763-768
Presence of two types of flowers with respect to nectar sugar in two gregariously flowering species Chaitali Anand, Chaitrali Umranikar, Pooja Shintre, Anuja Damle, Janhavi Kale, Jahnavi Joshi and Milind Watve	769-774
Sociobiology of biodegradation and the role of predatory protozoa in biodegrading communities Tejashree Modak, Shalmali Pradhan and Milind Watve	775–780
Patterns of species discovery in the Western Ghats, a megadiversity hot spot in India N A Aravind, B Tambat, G Ravikanth, K N Ganeshaiah and R Uma Shaanker	781–790
Do we live in a largely top-down regulated world? Karl Banse	791–796
Singing of Neoconocephalus robustus as an example of deterministic chaos in insects Tina P Benko and Matjaž Perc	797–804
Erratum
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