J. Pen

1.9k citations

41 papers · 1.3k · h-index 15

Impact in

Biotechnology top 1%
- Transgenic Plants and Applications
Plant Science top 5%
- Phytase and its Applications
- Plant nutrient uptake and metabolism
- Plant Stress Responses and Tolerance
- Plant Molecular Biology Research
- Plant Micronutrient Interactions and Effects

Papers in

Molecular Biology 17
- Plant tissue culture and regeneration 9
- Viral Infectious Diseases and Gene Expression in Insects 3
Plant Science 12
- Phytase and its Applications 7
- Genetically Modified Organisms Research 2

Co-authors: Theo C. Verwoerd (5 shared papers)Oscar J. M. Goddijn (1 shared paper)André Hoekema (6 shared papers)M. R. L. Owen (10 shared papers)Peter A. van Paridon (2 shared papers)Peter J. M. van den Elzen (4 shared papers)Albert J. J. van Ooyen (4 shared papers)R. F. Beudeker (4 shared papers)
Journals: PLANT PHYSIOLOGY (3 papers)The Economic Journal (2 papers)Nature Biotechnology (2 papers)Plant Molecular Biology (2 papers)Industrial Crops and Products (1 paper)
Partner nations: Netherlands United States Italy

In The Last Decade

J. Pen

40 papers receiving 1.2k citations

Peers

Replace Theo C. Verwoerd with:

Theo C. Verwoerd Netherlands

Michael Keil Germany

Anna L. Tan‐Wilson United States

Rym Agrebi Tunisia

Arthur K. Weissinger United States

Mikhail A. Belozersky Russia

Steven Spiker United States

V. A. Hilder United Kingdom

Clark Ford United States

David J. Fairbairn Australia

J. Pen relative to Theo C. Verwoerd Netherlands Theo C. Verwoerd's profile →

Citations per field

00.5×1.5×

Theo C. Verwoerd · 1×

×0.7 407/573

BIOTE

×0.4 678/2k

PS

×0.5 817/2k

MB

×0.3 41/161

HEMAT

×0.7 56/77

ND

Citations per year

'16

'17

'18

'19

'20

'21

'22

'23

'24

'25

'26

Countries citing papers authored by J. Pen

Since Specialization

Citations

This map shows the geographic impact of J. Pen'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 J. Pen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites J. Pen more than expected).

Fields of papers citing papers by J. Pen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J. Pen. 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 J. Pen. The network helps show where J. Pen may publish in the future.

Co-authors

The 25 scholars most cited alongside J. Pen, 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 J. Pen Line = papers co-authored together J. Pen links everyone, so they are left out of the graph.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Showing the 20 most-cited of 41 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Inhibition of Trehalase Activity Enhances Trehalose Accumulation in Transgenic Plants PLANT PHYSIOLOGY ·OJM. Goddijn, Theo C. Verwoerd, Eline Voogd, RWHH. Krutwagen, PTHM. de Graff, Jeroen Poels, Kees van Dun, A. S. Ponstein, Brigitte Damm, J. Pen	1997	232
2	Phytase-containing Transgenic Seeds as a Novel Feed Additive for Improved Phosphorus Utilization Nature Biotechnology ·J. Pen, Theo C. Verwoerd, Peter A. van Paridon, R. F. Beudeker, Peter J. M. van den Elzen, Kees Geerse, J.D. van der Klis, Hans A. J. Versteegh, Albert J. J. van Ooyen, André Hoekema	1993	153
3	Extracellular targeting of the vacuolar tobacco proteins AP24, chitinase and β-1,3-glucanase in transgenic plants Plant Molecular Biology ·Leo S. Melchers, Marianne B. Sela‐Buurlage, Sandra A. Vloemans, Charles P. Woloshuk, Jeroen S. C. van Roekel, J. Pen, Peter J. M. van den Elzen, Men J. C. Cornelissen	1993	128
4	Stable Accumulation of Aspergillus niger Phytase in Transgenic Tobacco Leaves PLANT PHYSIOLOGY ·Theo C. Verwoerd, Peter A. van Paridon, AJJ. van Ooyen, JWM. van Lent, André Hoekema, J. Pen	1995	121
5	Plants as bioreactors Trends in biotechnology ·Oscar J. M. Goddijn, J. Pen	1995	104
6	Changing Boundaries of the Political Cambridge University Press eBooks ·Charles S. Maier, Alessandro Pizzorno, Claus Offe, Suzanne Berger, Massimo Paci, Laura Balbo, Paul Starr, Gerald D. Feldman, Miles Kahler, J. Pen, John H. Goldthorpe	1987	87
7	The 30-Kilodalton Protein Present in Purified Fusicoccin Receptor Preparations Is a 14-3-3-Like Protein PLANT PHYSIOLOGY ·Mauro Marra, Maria Rosaria Fullone, Vincenzo Fogliano, J. Pen, Maurizio Mattei, Salvatore Masi, Patrizia Aducci	1994	75
8	Production of Active Bacillus licheniformis Alpha-Amylase in Tobacco and its Application in Starch Liquefaction Nature Biotechnology ·J. Pen, Lucy Molendijk, Wim J. Quax, Peter C. Sijmons, Albert J. J. van Ooyen, Peter J. M. van den Elzen, Krijn Rietveld, André Hoekema	1992	71
9	Transgenic plants : a production system for industrial and pharmaceutical proteins M. R. L. Owen, J. Pen	1996	52
10	Stable expression of Phytase (phyA) in canola (Brassica napus) seeds: towards a commercial product Molecular Breeding ·Anne Ponstein, Jacob B. Bade, Theo C. Verwoerd, Lucy Molendijk, J. J. H. Storms, R. F. Beudeker, J. Pen	2002	52
11	TraitMill: a Discovery Engine for Identifying Yield-enhancement Genes in Cereals Christophe Reuzeau, J. Pen, Valérié Frankard, Joris De Wolf, R. Peerbolte, Willem F. Broekaert, Wim Van Camp	2010	43
12	An efficient procedure for the isolation of recombinant baculovirus Nucleic Acids Research ·J. Pen, Gjalt W. Welling, Sytske Welling‐Wester	1989	41
13	Expression of human blood proteins in transgenic plants: the cytokine GM-CSF as a model protein. Peter R. Ganz, Anil K. Dudani, E. Tackaberry, Ravinder Sardana, Christian Sauder, Cheng Xiongying, I Altosaar, M. R. L. Owen, J. Pen	1996	18
14	Protein production in transgenic crops: analysis of plant molecular farming. J. Pen, Peter C. Sijmons, A. J. J. van Ooijen, André Hoekema, Andrew Hiatt	1993	18
15	Structural comparison of two esterases from Drosophila mojavensis isolated by immunoaffinity chromatography Biochemical Journal ·J. Pen, J. Van Beeumen, J J Beintema	1986	16
16	Comparison of host systems for the production of recombinant proteins. J. Pen, M. R. L. Owen	1996	12
17	Direct screening for high-level expression of an introduced α-amylase gene in plants Plant Molecular Biology ·J. Pen, Albert J. J. van Ooyen, Peter J. M. van den Elzen, Krijn Rietveld, André Hoekema	1992	10
18	Purification and properties of esterase-4 from Drosophila mojavensis Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology ·J. Pen, H.A.H. Rongen, Jaap J. Beintema	1984	9
19	Influence of the microbial flora on the amount of CCK8- and secretin21–27-like immunoreactivity in the intestinal tract of mice Comparative Biochemistry and Physiology Part B Comparative Biochemistry ·J. Pen, Gjalt W. Welling	1983	9
20	Differences in specificity and catalytic efficiency between allozymes of esterase-4 from Drosophila mojavensis. Molecular Biology and Evolution ·J. Pen, A. Schipper, H.A.H. Rongen, J J Beintema	1986	7

About J. Pen

J. Pen is a scholar working on Molecular Biology, Plant Science, Biotechnology, Cellular and Molecular Neuroscience and Genetics, having authored 41 papers that have together received 1.3k indexed citations. Recurring topics across this work include Plant tissue culture and regeneration (9 papers), Transgenic Plants and Applications (8 papers), Phytase and its Applications (7 papers), Enzyme Production and Characterization (4 papers), Animal Genetics and Reproduction (3 papers), Viral Infectious Diseases and Gene Expression in Insects (3 papers), Neurobiology and Insect Physiology Research (3 papers) and Genetically Modified Organisms Research (2 papers). The work is most often cited by research in Biotechnology (407 citations), Plant Science (678 citations), Molecular Biology (817 citations), Hematology (41 citations) and Nutrition and Dietetics (56 citations). J. Pen has collaborated with scholars based in Netherlands, United States and Italy. Frequent co-authors include Theo C. Verwoerd, Oscar J. M. Goddijn, André Hoekema, M. R. L. Owen, Peter A. van Paridon, Peter J. M. van den Elzen, Albert J. J. van Ooyen, R. F. Beudeker, A. S. Ponstein and Brigitte Damm. Their work appears in journals such as PLANT PHYSIOLOGY, The Economic Journal, Nature Biotechnology, Plant Molecular Biology and Industrial Crops and Products.

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.

Explore authors with similar magnitude of impact

J. Pen

Impact in

Papers in i

In The Last Decade

J. Pen

Peers

Countries citing papers authored by J. Pen

Fields of papers citing papers by J. Pen

All Works

About J. Pen

Explore authors with similar magnitude of impact

Papers in