Skip Nav Destination
1-20 of 40
J Exp Biol (2023) 226 (20): jeb245375.
Published: 16 October 2023
... transporters, including cotransporters, uniporters and antiporters, facilitate the absorption of dissolved amino acids (often against concentration gradients). Although there is a lack of mechanistic and molecular characterization of such transporters, pathways for the direct uptake of amino acids from...
J Exp Biol (2012) 215 (9): 1575–1583.
Published: 1 May 2012
...Monica D. Poteat; Mauricio Díaz-Jaramillo; David B. Buchwalter SUMMARY Despite their ecological importance and prevalent use as ecological indicators, the trace element physiology of aquatic insects remains poorly studied. Understanding divalent metal transport processes at the water–insect...
J Exp Biol (2011) 214 (23): 3985–3991.
Published: 1 December 2011
... vasodilatation is found, mediated by secondary release of nitric oxide or prostacyclin. In fishes, gill extrusion of NaCl is inhibited by UII, but a single study has determined that UT is expressed in gill vasculature, not on the epithelium that mediates the transport. To begin to clarify the pathways involved...
Includes: Supplementary data
J Exp Biol (2009) 212 (17): 2856–2863.
Published: 1 September 2009
... characterized the transport properties of four aquaporins localized to osmoregulatory organs – gill,esophagus, intestine and kidney. By sequence comparison these four AQP orthologs resemble human AQP1 (eel AQP1), AQP3 (eel AQP3) and AQP10 (AQPe). The fourth member is a duplicate form of AQP1 (AQP1dup) thought...
J Exp Biol (2008) 211 (7): 1131–1140.
Published: 1 April 2008
... upregulation of tissue morphology, intestinal nutrient transport rates and enzyme activities illustrate, for the python, the matched regulation of their gastrointestinal performance with each meal. The gastrointestinal (GI) tract is an equally amenable system to study matched responses to changes in demand...
J Exp Biol (2005) 208 (10): 1895–1904.
Published: 15 May 2005
... of the goldenrod gall fly Eurosta solidaginis Fitch (Diptera, Tephritidae). From September to December, hemolymph osmolality(455-926 mOsmol kg l -1 ) and freezing tolerance increased markedly in field-collected larvae. Chlorophenol Red was readily transported into the lumen of the foregut, the posterior portion...
J Exp Biol (2004) 207 (19): 3253–3263.
Published: 1 September 2004
...Michele G. Wheatly; Yongping Gao SUMMARY This article will review the utility of comparative animal models in understanding the molecular biology of ion transport. Due to the breadth of this field some `disclaimers' need to be established up front. `Comparative'will be defined as non-mammalian...
J Exp Biol (2004) 207 (6): 905–912.
Published: 22 February 2004
...@ualberta.ca ) * Present address: Department of Biology, McMaster University, Hamilton,Ontario, Canada 17 12 2003 © The Company of Biologists Limited 2004 2004 mitochondria-rich cells MR cells sodium transport Na + /K + -ATPase H + -ATPase rainbow trout Oncorhynchus mykiss...
J Exp Biol (2003) 206 (12): 1955–1961.
Published: 15 June 2003
... intracellular molecular movement transport diffusion perfusion survival cytomatrix cytosol The cell is the crucible of life. In it, molecules move or are moved. Some are moving `randomly', driven by thermal energy; others are directed(convected). The same is true at the macro level. We have long...
J Exp Biol (2003) 206 (3): 551–559.
Published: 1 February 2003
...-populations was performed to determine which displayed acid-activated phenamil- and bafilomycin-sensitive Na + uptake. Analysis of the mechanism(s) of 22 Na + influx was performed in control and acid-activated (addition of 10 mmoll -1 proprionic acid) cells using a variety of Na + transport inhibitors...
J Exp Biol (2002) 205 (3): 405–413.
Published: 1 February 2002
...Pamela Chavez-Crooker; Nestor Garrido; Gregory A. Ahearn SUMMARY Mechanisms of copper transport into purified mitochondrial suspensions prepared from the hepatopancreas of the Atlantic lobster Homarus americanus were investigated. Mitochondria were purified by combining methods of differential...
J Exp Biol (2002) 205 (1): 151–158.
Published: 1 January 2002
... of zinc alone. Alterations in zinc transport were not correlated with changes in levels of free zinc ion. The chemical nature of the zinc–amino acid chelate, rather than the chelation itself, appeared to have the most important influence upon zinc absorption. l -histidine, despite a strong zinc-chelating...
J Exp Biol (2000) 203 (1): 147–154.
Published: 1 January 2000
... to cleft closure. When interpreted within the framework of established principles of enzyme catalysis, this information on the structure and dynamics of the H + P-ATPase molecule provides the basis of a rational model for the sequence of events that occurs as the ATPase proceeds through its transport cycle...
J Exp Biol (1999) 202 (16): 2167–2175.
Published: 15 August 1999
... partially (up to 39 %) inhibited lactate uptake, suggesting the involvement of a monocarboxylate carrier. The anion transport inhibitor 4-acetoamido-4′-isothiocyanstilbene-2,2′-disulphonic acid (SITS) and the monocarboxylate transport inhibitor α-cyano-4-hydroxycinnamate (CHC) stimulated apparent lactate...
J Exp Biol (1998) 201 (24): 3385–3393.
Published: 15 December 1998
...Rachel D. Behnke; Liz Busquets-Turner; Gregory A. Ahearn ABSTRACT Transport of D-[3H]glucose into lobster ( Homarus americanus ) brush-border membrane vesicles (BBMVs) prepared by Mg 2+ precipitation from antennal gland labyrinth–coelomosac tissue was examined. Influx of D-glucose occurred...
J Exp Biol (1998) 201 (13): 1981–1990.
Published: 1 July 1998
...Marcel J. C. Bijvelds; Joan A. Van Der Velden; Zvonimir I. Kolar; Gert Flik ABSTRACT The magnesium handling of freshwater teleost fish is discussed, with an emphasis on the role of branchial, intestinal and renal transport. In response to the eminent threat of constant diffusive losses of minerals...
J Exp Biol (1997) 200 (2): 321–330.
Published: 1 January 1997
... division cycle gene CDC1 . The mutant could be suppressed by overexpression of the SMF1 gene, which codes for a plasma membrane Mn 2+ transporter. We observed that the yeast SMF1 gene shares homology with the mouse Nramp gene. Nramp ( Bcg ) was cloned as a gene responsible for mouse resistance to infection...
J Exp Biol (1997) 200 (2): 335–341.
Published: 1 January 1997
...Shimon Schuldiner; Mario Lebendiker; Hagit Yerushalmi ABSTRACT EmrE is an Escherichia coli multidrug transporter which confers resistance to a wide variety of toxicants by actively removing them in exchange for hydrogen ions. EmrE is a highly hydrophobic 12 kDa protein which has been purified...
J Exp Biol (1996) 199 (10): 2225–2234.
Published: 1 October 1996
...Stephen T. Kinsey; W. Ross Ellington ABSTRACT Proton ( 1 H) and phosphorus ( 31 P) nuclear magnetic resonance (NMR) spectroscopy were used to investigate the mode of transport of L-lactate across the plasma membranes of the abdominal extensor muscles of the spiny lobster Panulirus argus...
J Exp Biol (1995) 198 (12): 2635–2637.
Published: 1 December 1995
... Goldstein , L. , Luer , C. A. and Blum , P. C. ( 1993 ). Taurine transport characteristics of the embryonic skate ( Raja eglanteria ) heart . J. exp. Biol. 182 , 291 – 295 . 10.1242/jeb.182.1.291 Jackson , P. S. and Strange , K. ( 1993 ). Volume-sensitive anion...