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Items: 1 to 50 of 72

1.

Ion selectivity and competition in channelrhodopsins.

Schneider F, Gradmann D, Hegemann P.

Biophys J. 2013 Jul 2;105(1):91-100. doi: 10.1016/j.bpj.2013.05.042.

2.

Rectification of the channelrhodopsin early conductance.

Gradmann D, Berndt A, Schneider F, Hegemann P.

Biophys J. 2011 Sep 7;101(5):1057-68. doi: 10.1016/j.bpj.2011.07.040.

3.

Two open states with progressive proton selectivities in the branched channelrhodopsin-2 photocycle.

Berndt A, Prigge M, Gradmann D, Hegemann P.

Biophys J. 2010 Mar 3;98(5):753-61. doi: 10.1016/j.bpj.2009.10.052.

4.

Dynamics of voltage profile in enzymatic ion transporters, demonstrated in electrokinetics of proton pumping rhodopsin.

Hagedorn R, Gradmann D, Hegemann P.

Biophys J. 2008 Dec;95(11):5005-13. doi: 10.1529/biophysj.107.125260. Epub 2008 Jul 11.

5.

Channelrhodopsin-1 initiates phototaxis and photophobic responses in chlamydomonas by immediate light-induced depolarization.

Berthold P, Tsunoda SP, Ernst OP, Mages W, Gradmann D, Hegemann P.

Plant Cell. 2008 Jun;20(6):1665-77. doi: 10.1105/tpc.108.057919. Epub 2008 Jun 13.

6.

Electrokinetics of miniature K+ channel: open-state V sensitivity and inhibition by K+ driving force.

Gazzarrini S, Abenavoli A, Gradmann D, Thiel G, Moroni A.

J Membr Biol. 2006;214(1):9-17. Epub 2007 Jun 13.

PMID:
17568981
7.

H+ -pumping rhodopsin from the marine alga Acetabularia.

Tsunoda SP, Ewers D, Gazzarrini S, Moroni A, Gradmann D, Hegemann P.

Biophys J. 2006 Aug 15;91(4):1471-9. Epub 2006 May 26. Erratum in: Biophys J. 2007 Jan 15;92(2):697.

8.

Oscillations in plant membrane transport: model predictions, experimental validation, and physiological implications.

Shabala S, Shabala L, Gradmann D, Chen Z, Newman I, Mancuso S.

J Exp Bot. 2006;57(1):171-84. Epub 2005 Dec 5.

PMID:
16330526
9.

Multiple photocycles of channelrhodopsin.

Hegemann P, Ehlenbeck S, Gradmann D.

Biophys J. 2005 Dec;89(6):3911-8. Epub 2005 Sep 16. Erratum in: Biophys J. 2006 Jan 15;90(2):710.

10.
11.

Apparent charge of binding site in ion-translocating enzymes: kinetic impact.

Gradmann D, Boyd CM.

Eur Biophys J. 2005 Jun;34(4):353-7. Epub 2005 Mar 9.

PMID:
15756587
12.

Current-voltage-time records of ion translocating enzymes.

Gradmann D, Boyd CM.

Eur Biophys J. 2004 Aug;33(5):396-411. Epub 2004 Feb 5.

PMID:
14762704
13.

Transinhibition and voltage-gating in a fungal nitrate transporter.

Boyd J, Gradmann D, Boyd CM.

J Membr Biol. 2003 Sep 15;195(2):109-20.

PMID:
14692450
14.

Modeling light-induced currents in the eye of Chlamydomonas reinhardtii.

Gradmann D, Ehlenbeck S, Hegemann P.

J Membr Biol. 2002 Sep 15;189(2):93-104.

PMID:
12235485
15.

Evidence for a light-induced H(+) conductance in the eye of the green alga Chlamydomonas reinhardtii.

Ehlenbeck S, Gradmann D, Braun FJ, Hegemann P.

Biophys J. 2002 Feb;82(2):740-51.

16.

Impact of apoplast volume on ionic relations in plant cells.

Gradmann D.

J Membr Biol. 2001 Nov 1;184(1):61-9. Erratum in: J Membr Biol 2002 Apr 1;186(3):185.

PMID:
11687879
17.

Three types of membrane excitations in the marine diatom Coscinodiscus wailesii.

Gradmann D, Boyd CM.

J Membr Biol. 2000 May 15;175(2):149-60.

PMID:
10811976
19.

Mutation in pore domain uncovers cation- and voltage-sensitive recovery from inactivation in KAT1 channel.

Moroni A, Gazzarrini S, Cerana R, Colombo R, Sutter JU, DiFrancesco D, Gradmann D, Thiel G.

Biophys J. 2000 Apr;78(4):1862-71.

21.

Calcium release from InsP3-sensitive internal stores initiates action potential in Chara.

Biskup B, Gradmann D, Thiel G.

FEBS Lett. 1999 Jun 18;453(1-2):72-6.

22.

Electrocoupling of ion transporters in plants: interaction with internal ion concentrations.

Gradmann D, Hoffstadt J.

J Membr Biol. 1998 Nov 1;166(1):51-9.

PMID:
9784585
24.

Kinetic analysis of Ca2+/K+ selectivity of an ion channel by single-binding-site models.

Gradmann D, Johannes E, Hansen U.

J Membr Biol. 1997 Sep 15;159(2):169-78.

PMID:
9307443
25.

K(+)-sensitive gating of the K+ outward rectifier in Vicia guard cells.

Blatt MR, Gradmann D.

J Membr Biol. 1997 Aug 1;158(3):241-56.

PMID:
9263886
26.

Oscillatory interactions between voltage gated electroenzymes.

Gradmann D, Buschmann P.

J Exp Bot. 1997 Mar;48 Spec No:399-404. doi: 10.1093/jxb/48.Special_Issue.399.

PMID:
21245218
27.

Reaction kinetics of the vacuolar H(+)-pumping ATPase in beta vulgaris.

Davies JM, Sanders D, Gradmann D.

J Membr Biol. 1996 Apr;150(3):231-41.

PMID:
8661990
28.

Kinetic effects of extracellular calcium on the potassium outward rectifier in the plasma membrane of Saccharomyces cerevisiae.

Scheurmann-Kettner C, Gradmann D, Bertl A.

Folia Microbiol (Praha). 1996;41(1):126-8. No abstract available.

PMID:
9090852
29.
30.

Primary structure of the plasma membrane H(+)-ATPase from the halotolerant alga Dunaliella bioculata.

Wolf AH, Slayman CW, Gradmann D.

Plant Mol Biol. 1995 Jul;28(4):657-66.

PMID:
7647298
31.

Na+ transport in Acetabularia bypasses conductance of plasmalemma.

Amtmann A, Gradmann D.

J Membr Biol. 1994 Apr;139(2):117-25.

PMID:
8064844
32.

Electrocoupling of ion transporters in plants.

Gradmann D, Blatt MR, Thiel G.

J Membr Biol. 1993 Dec;136(3):327-32.

PMID:
8114082
33.
34.
35.

Enzyme kinetics of the prime K+ channel in the tonoplast of Chara: selectivity and inhibition.

Klieber HG, Gradmann D.

J Membr Biol. 1993 Mar;132(3):253-65.

PMID:
7684088
36.

Electrical measurements on endomembranes.

Bertl A, Blumwald E, Coronado R, Eisenberg R, Findlay G, Gradmann D, Hille B, Köhler K, Kolb HA, MacRobbie E, et al.

Science. 1992 Nov 6;258(5084):873-4. No abstract available.

PMID:
1439795
37.

Calcium- and voltage-dependent ion channels in Saccharomyces cerevisiae.

Bertl A, Gradmann D, Slayman CL.

Philos Trans R Soc Lond B Biol Sci. 1992 Oct 29;338(1283):63-72. Review.

PMID:
1280839
38.

Vanadate-sensitive ATPase in the plasmalemma of Acetabularia: biochemical and kinetic characterization.

Smahel M, Klieber HG, Gradmann D.

Planta. 1992 Aug;188(1):62-9. doi: 10.1007/BF00198940.

PMID:
24178200
39.

Ion channels in Arabidopsis plasma membrane : transport characteristics and involvement in light-induced voltage changes.

Spalding EP, Slayman CL, Goldsmith MH, Gradmann D, Bertl A.

Plant Physiol. 1992 May;99(1):96-102.

40.

Ion fluxes in Acetabularia: vesicular shuttle.

Mummert H, Gradmann D.

J Membr Biol. 1991 Dec;124(3):255-63.

PMID:
1787536
41.

Action potentials in Acetabularia: measurement and simulation of voltage-gated fluxes.

Mummert H, Gradmann D.

J Membr Biol. 1991 Dec;124(3):265-73.

PMID:
1664861
42.

The prime plasmalemma ATPase of the halophilic alga Dunaliella bioculata: purification and characterization.

Smahel M, Hamann A, Gradmann D.

Planta. 1990 Jul;181(4):496-504. doi: 10.1007/BF00193002.

PMID:
24196929
43.

Electrogenic chloride transport in algae.

Gradmann D.

Ann N Y Acad Sci. 1989;574:20-9. No abstract available.

PMID:
2634354
44.

Is there a Cl- pump?

Gerencser GA, White JF, Gradmann D, Bonting SL.

Am J Physiol. 1988 Nov;255(5 Pt 2):R677-92.

PMID:
2461100
45.

Cell walls as reservoirs of potassium ions for reversible volume changes of pulvinar motor cells during rhythmic leaf movements.

Freudling C, Starrach N, Flach D, Gradmann D, Mayer WE.

Planta. 1988 Aug;175(2):193-203. doi: 10.1007/BF00392427.

PMID:
24221712
46.

Reaction kinetic parameters for ion transport from steady-state current-voltage curves.

Gradmann D, Klieber HG, Hansen UP.

Biophys J. 1987 Apr;51(4):569-85.

47.

Membrane-potential responses following gravistimulation in roots of Lepidium sativum L.

Behrens HM, Gradmann D, Sievers A.

Planta. 1985 Apr;163(4):463-72. doi: 10.1007/BF00392703.

PMID:
24249445
48.

Electrical properties of the vertically growing root tip of Lepidium sativum L.

Behrens HM, Gradmann D.

Planta. 1985 Apr;163(4):453-62. doi: 10.1007/BF00392702.

PMID:
24249444
49.
50.

Aged preparations are electrophysiologically more representative of intact tissue than are freshly excised preparations.

Starrach N, Freudling C, Mayer WE, Gradmann D.

Planta. 1984 Jan;160(1):88-90. doi: 10.1007/BF00392471.

PMID:
24258377

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