... it appears to be established that the cation pump is a two-component system of a H + -transporting V-ATPase and a cation/nH + antiporter. After tracing the discovery of the V-ATPase as the energizer of K + /nH + antiport in the larval midgut of the tobacco hornworm Manduca sexta we show that research...

... © The Company of Biologists Limited 2003 2003 tobacco hornworm Manduca sexta Bombyx mori CCAP ecdysteroids prothoracicostatic peptide ecdysterostatic hormone neurosecretion allatostatin epiproctodeal gland Hormonal regulation of molting and metamorphosis in Manduca sexta...

...David B. Morton; Esther J. Anderson SUMMARY Soluble guanylyl cyclases are typically obligate heterodimers, composed of a single alpha and a single beta subunit. MsGC-β3, identified in the tobacco hornworm Manduca sexta , was the first example of a soluble guanylyl cyclase that exhibited enzyme...

... ) 4 2 2002 © The Company of Biologists Limited 2002 2002 ecdysis-triggering hormone eclosion hormone crustacean cardioactive peptide cyclic GMP inhibition eclosion neuron carbon dioxide tobacco hornworm Manduca sexta Neuromodulators play a key role in timing...

... is discussed. *Author for correspondence (e-mail: zeiske@biologie.uni-osnabrueck.de ) 27 11 2001 © The Company of Biologists Limited 2002 2002 Manduca sexta tobacco hornworm K + secretion V-ATPase vacuolar pump current K + channel intracellular pH. The midgut...

... on-line: http://www.biologists.com/JEB/movies/jeb3271.html References Bell , R. A. and Joachim , F. A. ( 1976 ). Techniques for rearing laboratory colonies of tobacco hornworms and pink bollworms . Ann. Ent. Soc. Am. 69 , 365 – 373 . 10.1093/aesa/69.2.365 Blum , M. S...

... ). Isolation and identification of a new diuretic peptide from the tobacco hornworm, Manduca sexta . Biochem. Biophys. Res. Commun. 181 , 927 – 932 . 10.1016/0006-291X(91)92025-F Blackburn , M. B. and Ma , M. C. ( 1994 ). Diuretic activity of Mas-DP II, an identified neuropeptide...

... the excitability of the CCAP neurons. * Author for correspondence (e-mail: jwt@u.washington.edu ) 23 11 1998 21 01 1999 © 1999 by Company of Biologists 1999 eclosion hormone ecdysis-triggering hormone crustacean cardioactive peptide tobacco hornworm Manduca sexta...

...Kyeong-Yeoll Lee; Frank M. Horodyski; M. E. Chamberlin ABSTRACT Short-circuit current ( I sc ) across the posterior midgut of day 2 fifth-instar tobacco hornworms ( Manduca sexta ) is inhibited by Manduca allatotropin (Mas-AT) and two Manduca FLRFamides (F7G and F7D). Another FLRFamide, F10...

...Lorin S. Gaertner; Christine L. Murray; Catherine E. Morris ABSTRACT We have examined the accumulative transport properties of the Malpighian (excretory) tubules of the tobacco hornworm Manduca sexta to test the hypothesis that a P-glycoprotein-like multidrug transporter is active...

...Timothy G. Kingan; William Gray; Duŝan žitňan; Michael E. Adams ABSTRACT Ecdysis behavior in the tobacco hornworm Manduca sexta (Lepidoptera: Sphingidae) is triggered through reciprocal peptide signaling between the central nervous system and the epitracheal endocrine system. Recent evidence...

...M. E. Chamberlin ABSTRACT Mitochondria isolated from the posterior midgut of the tobacco hornworm ( Manduca sexta ) contain arginine kinase. The distribution of mitochondrial and cytoplasmic marker enzymes indicates that the presence of mitochondrial arginine kinase is not due to cytoplasmic...

...M. E. Chamberlin; C. M. Gibellato; R. J. Noecker; E. J. Dankoski ABSTRACT Ion transport and metabolism in the posterior midgut before, during and after the molt to the fifth instar of the tobacco hornworm Manduca sexta were investigated. In situ measurements reveal that the transepithelial...

...-ATPase sectors. * Author for correspondence. 30 01 1996 ©The Company of Biologists Limited 1996 in situ hybridization immunocytochemistry mRNA localization V-ATPase tobacco hornworm midgut Manduca sexta The insect plasma membrane V-ATPase is a well...

...Amy L. Bader; R. Parthasarathy; William R. Harvey ABSTRACT Alkali-cation-dependent uptake of proline and glycine into brush-border membrane vesicles from the midgut of the larval tobacco hornworm Manduca sexta was investigated using rapid filtration assays. Uptake of both amino acids...

... Basiswetenschappen, Afdeling Fysiologie, Limburgs Universitair Centrum, B-3590 Diepenbeek, Belgium. 21 7 1994 © The Company of Biologists Limited 1994 tobacco hornworm Manduca sexta K + secretion short-circuit current K + channel selectivity permeability ratio K + channel block...

... tobacco hornworm Manduca sexta midgut K + transport transepithelial potential alkalization The isolated midgut of lepidopteran larvae secretes K + at a high rate by an electrogenic mechanism that generates a transepithelial electric potential (TEP) which may initially exceed 100 mV...

... of the V-ATPase and the K + /H + antiporter, an additional active and electrogenic transport step contributes a minor part to the apical ‘K + pump’ (but see below). K + secretion short-circuit current V-ATPase nitrate bafilomycin A1 trimethyltin chloride ionophore tobacco hornworm Manduca...

...M. E. Chamberlin ABSTRACT The transport of K + , Na + and Cl − across the three morphologically distinct regions of the tobacco hornworm midgut was measured under open-circuit and short-circuit conditions. Using a saline which contained physiological levels of haemolymph ions, amino acids...

... 1985 by Company of Biologists 1985 Insect tobacco hornworm Manduca sexta heart neuropeptides Several investigators have found endogenous substances that affect the beating of isolated insect hearts ( Cameron, 1953 ; Gersch, Fischer, Unger & Koch, 1960 ; Davey, 1961 ; Ralph...