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1

Phospholipid transfer proteins: Mechanism of action

George M. Helmkamp

Journal:

Journal of Bioenergetics and Biomembranes

Year:

1986

Language:

english

File:

PDF, 1.14 MB

english, 1986

2

Phosphatidylinositol transfer proteins: Structure, catalytic activity, and physiological function

George M. Helmkamp Jr.

Journal:

Chemistry and Physics of Lipids

Year:

1985

Language:

english

File:

PDF, 706 KB

english, 1985

3

Cyclic AMP promotes growth and secretion in human polycystic kidney epithelial cells1

Belibi, Franck A., Reif, Gail, Wallace, Darren P., Yamaguchi, Tamio, Olsen, Lincoln, Li, Hong, Helmkamp, George M., Grantham, Jared J.

Journal:

Kidney International

Year:

2004

Language:

english

File:

PDF, 196 KB

english, 2004

4

10.1021/ja01151a031

Hansch, Corwin, Helmkamp, George

Journal:

Journal of the American Chemical Society

Year:

1951

Language:

english

File:

PDF, 423 KB

english, 1951

5

Variations on the Theme “Tier-chemie ist Schmier-chemie”

George M. Helmkamp Jr.

Journal:

Biochemical and Biophysical Research Communications

Year:

2002

Language:

english

File:

PDF, 50 KB

english, 2002

6

Phosphatidylinositol exchange protein effects of membrane structure on activity and evidence for a ping-pong mechanism

George M. Helmkamp Jr., Karel W.A. Wirtz, Laurens L.M. van Deenen

Journal:

Archives of Biochemistry and Biophysics

Year:

1976

Language:

english

File:

PDF, 1.00 MB

english, 1976

7

General kinetic model for protein-mediated phospholipid transfer between membranes

Tetsuro Yoshimura, Ruth Welti, George M. Helmkamp Jr.

Journal:

Archives of Biochemistry and Biophysics

Year:

1988

Language:

english

File:

PDF, 1.10 MB

english, 1988

8

Interaction of bovine brain phospholipid exchange protein with liposomes of different lipid composition

George M. Helmkamp Jr.

Journal:

Biochimica et Biophysica Acta (BBA) - Biomembranes

Year:

1980

Language:

english

File:

PDF, 765 KB

english, 1980

9

Design, synthesis, and characterization of bis-phosphatidylcholine, a mechanistic probe of phosphatidylcholine transfer protein catalytic activity

Elizabeth A Runquist, George M Helmkamp Jr.

Journal:

Biochimica et Biophysica Acta (BBA) - Biomembranes

Year:

1988

Language:

english

File:

PDF, 939 KB

english, 1988

10

Effect of acceptor membrane phosphatidylcholine on the catalytic activity of bovine liver phosphatidyl choline transfer protein

Elizabeth A Runquist, George M Helmkamp Jr.

Journal:

Biochimica et Biophysica Acta (BBA) - Biomembranes

Year:

1988

Language:

english

File:

PDF, 1.04 MB

english, 1988

11

Tissue distribution, purification and characterization of rat phosphatidylinositol transfer protein

Susan E. Venuti, George M. Helmkamp Jr.

Journal:

Biochimica et Biophysica Acta (BBA) - Biomembranes

Year:

1988

Language:

english

File:

PDF, 820 KB

english, 1988

12

Developmental patterns in rat brain of phosphatidylinositol synthetic enzymes and phosphatidylinositol transfer protein

David A. Nyquist, George M. Helmkamp Jr.

Journal:

Biochimica et Biophysica Acta (BBA) - Biomembranes

Year:

1989

Language:

english

File:

PDF, 614 KB

english, 1989

13

Transport of phosphatidylinositol to rat hepatocyte plasma membrane catalyzed by phosphatidylinositol transfer protein

Cheryl A. Borror, George M. Helmkamp Jr.

Journal:

Biochimica et Biophysica Acta (BBA) - Biomembranes

Year:

1991

Language:

english

File:

PDF, 2.01 MB

english, 1991

14

Intermembrane phospholipid fluxes catalyzed by bovine brain phospholipid exchange protein

Annette M. Kasper, George M. Helmkamp Jr.

Journal:

Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism

Year:

1981

Language:

english

File:

PDF, 919 KB

english, 1981

15

Bovine brain phosphatidylinositol transfer protein: Effects of pH, ionic strength and lipid composition on transfer activity

Tetsuro Yoshimura, George M. Helmkamp Jr.

Journal:

Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism

Year:

1984

Language:

english

File:

PDF, 742 KB

english, 1984

16

Purification and characterization of a phosphatidylinositol transfer protein from human platelets

Paula Y. George, George M. Helmkamp Jr.

Journal:

Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism

Year:

1985

Language:

english

File:

PDF, 916 KB

english, 1985

17

Secondary structures of nucleic acids in organic solvents III. Relationship of optical properties to conformation

George K. Helmkamp, Paul O.P. Ts'o

Journal:

Biochimica et Biophysica Acta

Year:

1962

Language:

english

File:

PDF, 431 KB

english, 1962

18

Secondary structures of nucleic acids in organic solvents II. Optical properties of nucleotides and nucleic acids

Paul O.P. Ts'o, George K. Helmkamp, Christian Sander

Journal:

Biochimica et Biophysica Acta

Year:

1962

Language:

english

File:

PDF, 811 KB

english, 1962

19

Erythrocyte sodium transport and membrane adenosine triphosphatase in patients with thermal injury

George M. Helmkamp Jr, Jerl P. Blackwell, Douglas W. Wilmore

Journal:

Clinica Chimica Acta

Year:

1973

Language:

english

File:

PDF, 633 KB

english, 1973

20

Both isoforms of mammalian phosphatidylinositol transfer protein are capable of binding and transporting sphingomyelin

Hong Li, Jacqueline M Tremblay, Lynwood R Yarbrough, George M Helmkamp Jr.

Journal:

Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids

Year:

2002

Language:

english

File:

PDF, 300 KB

english, 2002

21

The Addition of Dialkylalkylthiosulfonium Salts to Alkenes 1

Helmkamp, George K., Olsen, Barbara Ann, Pettitt, David J.

Journal:

Journal of Organic Chemistry

Year:

1965

Language:

english

File:

PDF, 241 KB

english, 1965

22

Concerning the mechanism of action of bovine liver phospholipid exchange protein: Exchange or net transfer

George M. Helmkamp Jr.

Journal:

Biochemical and Biophysical Research Communications

Year:

1980

Language:

english

File:

PDF, 345 KB

english, 1980

23

Activity of Phospholipid Exchange Proteins toward Gel and Liquid-Crystalline Phospholipid Vesicles

Helmkamp, George M.

Journal:

Biophysical Journal

Year:

1982

Language:

english

File:

PDF, 174 KB

english, 1982

24

The inactivity of brain phospholipid transfer protein toward phosphatidylinositol 4-phosphate

Martin J. Schermoly, George M. Helmkamp Jr.

Journal:

Year:

1983

Language:

english

File:

PDF, 361 KB

english, 1983

25

Partition of amphiphilic molecules into phospholipid vesicles and human erythrocyte ghosts: measurements by ultraviolet difference spectroscopy

Welti, Ruth, Mullikin, Lee J., Yoshimura, Tetsuro, Helmkamp, George M.

Journal:

Year:

1984

Language:

english

File:

PDF, 761 KB

english, 1984

26

The Secondary Structures of Nucleic Acids in Organic Solvents 1

Helmkamp, George K., Ts'o, Paul O. P.

Journal:

Journal of the American Chemical Society

Year:

1961

Language:

english

File:

PDF, 545 KB

english, 1961

27

Alkylation of Organic Disulfides 1

Helmkamp, George K., Cassey, Howard N., Olsen, Barbara Ann, Pettitt, David J.

Journal:

Journal of Organic Chemistry

Year:

1965

Language:

english

File:

PDF, 375 KB

english, 1965

28

Episulfonium salts. I. Carbon vs. sulfur attack in the reaction of cyclooctene-S-methylepisulfonium ion with nucleophiles

Owsley, Dennis C., Helmkamp, George K., Spurlock, Steven N.

Journal:

Journal of the American Chemical Society

Year:

1969

Language:

english

File:

PDF, 514 KB

english, 1969

29

Incorporation of molecular nitrogen into an organic molecule

Owsley, Dennis C., Helmkamp, George K.

Journal:

Journal of the American Chemical Society

Year:

1967

Language:

english

File:

PDF, 291 KB

english, 1967

30

Stereochemistry of the Deamination of Aziridines 1a,b

Clark, Ronald D., Helmkamp, George K.

Journal:

Journal of Organic Chemistry

Year:

1964

Language:

english

File:

PDF, 648 KB

english, 1964

31

Quaternization of Aziridines. Evidence for the Monomeric State of Products 1

Helmkamp, George K., Clark, Ronald D., Koskinen, James R.

Journal:

Journal of Organic Chemistry

Year:

1965

Language:

english

File:

PDF, 445 KB

english, 1965

32

Secondary structures of nucleic acids in organic solvents II. Optical properties of nucleotides and nucleic acids

Ts'o, Paul O.P., Helmkamp, George K., Sander, Christian

Journal:

Biochimica et Biophysica Acta (BBA) - Specialized Section on Nucleic Acids and Related Subjects

Year:

1962

Language:

english

File:

PDF, 811 KB

english, 1962

33

Secondary structures of nucleic acids in organic solvents III. Relationship of optical properties to conformation

Helmkamp, George K., Ts'o, Paul O.P.

Journal:

Biochimica et Biophysica Acta (BBA) - Specialized Section on Nucleic Acids and Related Subjects

Year:

1962

Language:

english

File:

PDF, 431 KB

english, 1962

34

Sequence of a human cDNA encoding phosphatidylinositol transfer protein and occurrence of a related sequence in widely divergent eukaryotes

Dickeson, S.Kent, Helmkamp, George M., Yarbrough, Lynwood R.

Journal:

Year:

1994

Language:

english

File:

PDF, 625 KB

english, 1994

35

Regional distribution in rat brain of phosphatidylinositol and phosphatidylcholine synthetic and intermembrane transfer activities

Venuti, Susan E., Helmkamp, George M.

Journal:

Neurochemistry International

Year:

1988

Language:

english

File:

PDF, 935 KB

english, 1988

36

Secondary structures of nucleic acids in organic solvents

Ts'o, Paul O.P., Helmkamp, George K., Sander, Christian, Studier, F.William

Journal:

Biochimica et Biophysica Acta (BBA) - Specialized Section on Nucleic Acids and Related Subjects

Year:

1963

Language:

english

File:

PDF, 814 KB

english, 1963

37

Stereochemistry of the Desulfurization of Thiiranes with Methyl Iodide 1

HELMKAMP, GEORGE K., PETTITT, DAVID J.

Journal:

Journal of Organic Chemistry

Year:

1960

Language:

english

File:

PDF, 239 KB

english, 1960

38

Mechanism of the Desulfurization of Episulfides with Methyl Iodide 1

Helmkamp, George K., Pettitt, David J.

Journal:

Journal of Organic Chemistry

Year:

1964

Language:

english

File:

PDF, 661 KB

english, 1964

39

Sterol Carrier Protein-2 Functions in Phosphatidylinositol Transfer and Signaling †

Schroeder, Friedhelm, Zhou, Minglong, Swaggerty, Christina L., Atshaves, Barbara P., Petrescu, Anca D., Storey, Stephen M., Martin, Gregory G., Huang, Huan, Helmkamp, George M., Ball, Judith M.

Journal:

Year:

2003

Language:

english

File:

PDF, 942 KB

english, 2003

40

Importance of Phospholipid in the Folding and Conformation of Phosphatidylinositol Transfer Protein: Comparison of Apo and Holo Species †

Voziyan, Paul A., Tremblay, Jacqueline M., Yarbrough, Lynwood R., Helmkamp, George M.

Journal:

Year:

1997

Language:

english

File:

PDF, 169 KB

english, 1997

41

Exposure of Phosphatidylinositol Transfer Proteins to Sphingomyelin−Cholesterol Membranes Suggests Transient but Productive Interactions with Raft-Like, Liquid-Ordered Domains †

Miller, Elizabeth C., Helmkamp, George M.

Journal:

Year:

2003

Language:

english

File:

PDF, 148 KB

english, 2003

42

Reaction of methanesulfenyl bromide with silver 2,4,6-trinitrobenzenesulfonate in organic solvents

Helmkamp, George K., Owsley, Dennis C., Barnes, Wayne M., Cassey, Howard N.

Journal:

Journal of the American Chemical Society

Year:

1968

Language:

english

File:

PDF, 483 KB

english, 1968

43

Modifications of Cysteine Residues in the Solution and Membrane-Associated Conformations of Phosphatidylinositol Transfer Protein Have Differential Effects on Lipid Transfer Activity †

Tremblay, Jacqueline M., Li, Hong, Yarbrough, Lynwood R., Helmkamp, George M.

Journal:

Year:

2001

Language:

english

File:

PDF, 135 KB

english, 2001

44

Coördination of Silver Ion with Unsaturated Compounds. VIII. Alkynes 1

Helmkamp, George K., Carter, Forrest L., Lucas, Howard J.

Journal:

Journal of the American Chemical Society

Year:

1957

Language:

english

File:

PDF, 619 KB

english, 1957

45

Episulfonium Ion Intermediates in an Addition Reaction of Cyclooctene

Pettitt, David J., Helmkamp, George K.

Journal:

Journal of Organic Chemistry

Year:

1964

Language:

english

File:

PDF, 738 KB

english, 1964

46

Episulfonium salts. II. Detection of an unusual intermediate in the reaction of a stable episulfonium salt with chloride ion

Owsley, Dennis C., Helmkamp, George K., Rettig, Michael F.

Journal:

Journal of the American Chemical Society

Year:

1969

Language:

english

File:

PDF, 425 KB

english, 1969

47

Synthesis of 2,5-dihydrothiophenonium 2,4,6-trinitrobenzenesulfonates from butadienes and methanesulfenyl 2,4,6-trinitrobenzenesulfonates

Helmkamp, George K., Owsley, Dennis C., Harris, Bruce R.

Journal:

Journal of Organic Chemistry

Year:

1969

Language:

english

File:

PDF, 297 KB

english, 1969

48

Studies of Fc.gamma. receptors of human B lymphocytes: phospholipase A2 activity of Fc.gamma. receptors

Suzuki, Tsuneo, Sadasivan, Raj, Saito-Taki, Tatsuo, Stechschulte, Daniel J., Balentine, Larry, Helmkamp, George M.

Journal:

Year:

1980

Language:

english

File:

PDF, 1.94 MB

english, 1980

49

Methano-bridged 14.pi.-electron aromatic annulenes. 1. 1,6-Methanofluorenyl and 9-methyl-1,6-methanofluorenyl anions

Hunadi, Ronald J., Helmkamp, George K.

Journal:

Journal of Organic Chemistry

Year:

1978

Language:

english

File:

PDF, 740 KB

english, 1978

50

Organic chemistry of sulfur (Oae, S.)

Helmkamp, George K.

Journal:

Journal of Chemical Education

Year:

1978

Language:

english

File:

PDF, 2.81 MB

english, 1978

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