John A. Walter

6.1k citations

105 papers · 4.7k indexed · 1 hit paper · h-index 36

Environmental Chemistry top 0.1%
- Marine Toxins and Detection Methods 40
Oceanography top 1%
- Marine and coastal ecosystems 8
Biotechnology top 0.5%
- Marine Sponges and Natural Products 10
Toxicology top 1%
Aquatic Science top 1%
- Seaweed-derived Bioactive Compounds 9
Pharmacology
- Microbial Natural Products and Biosynthesis 17
Organic Chemistry
- Chemical synthesis and alkaloids 11
Molecular Biology
- Nicotinic Acetylcholine Receptors Study 11
- Metabolomics and Mass Spectrometry Studies 9

Co-authors: Jeffrey L. C. Wright Michael A. Quilliam A. G. McInnes Ian W. Burton Tingmo Hu Jonathan M. Curtis Michael Falk Donald G. Smith
Cited by: Environmental Chemistry Oceanography Biotechnology
Journals: Canadian Journal of Chemistry (21 papers)Tetrahedron Letters (7 papers)Journal of Natural Products (6 papers)
Partner nations: Canada United States Australia

In The Last Decade

John A. Walter

104 papers receiving 4.4k citations

Hit Papers

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Peers

Countries citing papers authored by John A. Walter

Since Specialization

Citations

This map shows the geographic impact of John A. Walter's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by John A. Walter with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites John A. Walter more than expected).

Fields of papers citing papers by John A. Walter

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John A. Walter. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by John A. Walter. The network helps show where John A. Walter may publish in the future.

Co-authorship network

The 25 scholars most cited alongside John A. Walter, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with John A. Walter Line = papers co-authored together John A. Walter links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

#	Work
1	Sulfated diesters of okadaic acid and DTX-1: Self-protective precursors of diarrhetic shellfish poisoning (DSP) toxins Harmful Algae ·Tingmo Hu,Patricia LeBlanc,Ian W. Burton,John A. Walter,Pearse McCarron,Jeremy E. Melanson,Wendy K. Strangman,Jeffrey L. C. Wright	2017	29
2	Alterations in urinary metabolites due to unilateral ureteral obstruction in a rodent model Molecular BioSystems ·Dawn L. MacLellan,М В Галла,Alan A. Doucette,Майданик Вера Ивановна,吉田和久,Greg Trottier,Ian W. Burton,John A. Walter,Tobias K. Karakach	2011	16
3	¹³C‐NMR Regioisomeric Analysis of EPA and DHA in Fish Oil Derived Triacylglycerol Concentrates Journal of the American Oil Chemists Society ·E. Ramos,修一竹林,佳那子中前,Ian W. Burton,John A. Walter,Jaroslav A. Kralovec	2010	43
4	The preparation of certified calibration solutions for azaspiracid-1, -2, and -3, potent marine biotoxins found in shellfish Analytical and Bioanalytical Chemistry ·A. G. Gordeichik,Nils Rehmann,蔡伟华,Patricia LeBlanc,Cheryl Craft,Shawna L. MacKinnon,Carmen Algoet,Ian W. Burton,John A. Walter,Philipp Heß,Michael A. Quilliam,Jeremy E. Melanson	2010	30
5	Characterization of the measurement error structure in 1D 1H NMR data for metabolomics studies Analytica Chimica Acta ·Tobias K. Karakach,Peter D. Wentzell,John A. Walter	2009	39
6	Accelerated hepatic glycerol synthesis in rainbow smelt (Osmerus mordax) is fuelled directly by glucose and alanine: a1H and13C nuclear magnetic resonance study Journal of Experimental Zoology Part A Comparative Experimental Biology ·John A. Walter,K. Vanya Ewart,Connie E. Short,Ian W. Burton,William R. Driedzic	2006	19
7	Metabolic changes in Atlantic salmon exposed to Aeromonas salmonicida detected by 1H-nuclear magnetic resonance spectroscopy of plasma Diseases of Aquatic Organisms ·Kirty S. Solanky,Ian W. Burton,Mauro Carozzo Todaro,John A. Walter,Andrew Dacanay	2005	43
8	Characterization of Spirolides A, C, and 13-Desmethyl C, New Marine Toxins Isolated from Toxic Plankton and Contaminated Shellfish Journal of Natural Products ·Tingmo Hu,Ian W. Burton,Allan Cembella,Jonathan M. Curtis,Michael A. Quilliam,John A. Walter,Jeffrey L. C. Wright	2001	145
9	Sulfoquinovosyl diacylglycerols from the alga Heterosigma carterae Lipids ·Michael Keusgen,Jonathan M. Curtis,Pierre Thibault,John A. Walter,Anthony Windust,Stephen W. Ayer	1997	20
10	Potent Inhibitors of Cysteine Proteases from the Marine Fungus Microascus longirostris. The Journal of Antibiotics ·Scott D. Thielen,Jonathan M. Curtis,John A. Walter,Jeffrey L. C. Wright,Stephen W. Ayer,J. Kaleta,Mahmoud Malmir,Roman Vlček	1996	19
11	Biosynthesis of DTX-4: Confirmation of a Polyketide Pathway, Proof of a Baeyer−Villiger Oxidation Step, and Evidence for an Unusual Carbon Deletion Process Journal of the American Chemical Society ·Jeffrey L. C. Wright,Judy A. Ruíz-Ochoa,J. L. McLachlan,Judy Needham,John A. Walter	1996	75
12	Biosynthetic studies of the DSP toxin DTX-4 and an okadaic acid diol ester Journal of the Chemical Society Chemical Communications ·Judy Needham,Tingmo Hu,J. L. McLachlan,John A. Walter,Jeffrey L. C. Wright	1995	29
13	A new tricarbocyclic diterpene structure from the soft coral Xenia florida Journal of the Chemical Society Chemical Communications ·Tetsuo Iwagawa,Vargas Y. I. I Vargas,Tsunao Hase,Scott D. Thielen,John A. Walter,Jeffrey L. C. Wright	1994	6
14	Interaction of domoic acid and several derivatives with kainic acid and AMPA binding sites in rat brain European Journal of Pharmacology ·David R. Hampson,Xi‐Ping Huang,James W. Wells,John A. Walter,Jeffrey L. C. Wright	1992	102
15	Identification of isodomoic acid D and two new geometrical isomers of domoic acid in toxic mussels Canadian Journal of Chemistry ·Jeffrey L. C. Wright,Michael Falk,A. G. McInnes,John A. Walter	1990	71
16	Pathway of ammonium assimilation in Streptomyces venezuelae examined by amino acid analyses and ¹⁵N nuclear magnetic resonance spectroscopy Canadian Journal of Microbiology ·Stuart Shapiro,L. C. Vining,M. V. Laycock,A. G. McInnes,John A. Walter	1985	10
17	Tetrapyrrole biosynthesis in Anacystis nidulans; incorporation of [1-13C]-, [2-13C]-, [1,2-13C]- and [2-13C, 2-2H3]acetate Phytochemistry ·Norman Lewis,John A. Walter,Jeffrey L. C. Wright	1984	4
18	Proof for the biosynthetic conversion of L-(indole-15N)tryptophan to (10-15N)anthramycin using (13C,15N) labelling in conjunction with 13C-NMR and mass spectral analysis. The Journal of Antibiotics ·Les Burrows,Laurence H. Hurley,A. G. McInnes,Donald G. Smith,John A. Walter,Jeffrey L. C. Wright	1980	6
19	Caerulomycin D, a novel glycosidic derivative of 3,4-dihydroxy-2,2′-dipyridyl 6-aldoxime from Streptomyces caeruleus Canadian Journal of Chemistry ·A. G. McInnes,Donald G. Smith,John A. Walter,Jeffrey L. C. Wright,L. C. Vining,G. P. Arsenault	1978	25
20	Carrageenans in the gametophytic and sporophytic stages of Chondrus crispus Planta ·Esther L. McCandless,J. S. Craigie,John A. Walter	1973	106

About John A. Walter

John A. Walter is a scholar working on Environmental Chemistry, Aquatic Science, Biotechnology, Pharmacology and Organic Chemistry, having authored 105 papers that have together received 4.7k indexed citations. Recurring topics across this work include Marine Toxins and Detection Methods (40 papers), Microbial Natural Products and Biosynthesis (17 papers), Chemical synthesis and alkaloids (11 papers), Nicotinic Acetylcholine Receptors Study (11 papers), Marine Sponges and Natural Products (10 papers), Metabolomics and Mass Spectrometry Studies (9 papers), Seaweed-derived Bioactive Compounds (9 papers) and Marine and coastal ecosystems (8 papers). The work is most often cited by research in Environmental Chemistry (2.5k citations), Oceanography (1.1k citations), Biotechnology (551 citations), Toxicology (171 citations) and Aquatic Science (303 citations). John A. Walter has collaborated with scholars based in Canada, United States and Australia. Frequent co-authors include Jeffrey L. C. Wright, Michael A. Quilliam, A. G. McInnes, Ian W. Burton, Tingmo Hu, Jonathan M. Curtis, Michael Falk, Donald G. Smith, L. C. Vining and Pierre Thibault. Their work appears in journals such as Canadian Journal of Chemistry, Tetrahedron Letters, Journal of Natural Products, The Journal of Antibiotics and Tetrahedron.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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