J Knappe

4.1k total citations
55 papers, 3.3k citations indexed

About

J Knappe is a scholar working on Biochemistry, Molecular Biology and Materials Chemistry. According to data from OpenAlex, J Knappe has authored 55 papers receiving a total of 3.3k indexed citations (citations by other indexed papers that have themselves been cited), including 24 papers in Biochemistry, 20 papers in Molecular Biology and 20 papers in Materials Chemistry. Recurrent topics in J Knappe's work include Amino Acid Enzymes and Metabolism (23 papers), Enzyme Structure and Function (19 papers) and Biotin and Related Studies (12 papers). J Knappe is often cited by papers focused on Amino Acid Enzymes and Metabolism (23 papers), Enzyme Structure and Function (19 papers) and Biotin and Related Studies (12 papers). J Knappe collaborates with scholars based in Germany, France and Austria. J Knappe's co-authors include Arne Wagner, R. Gary Sawers, Markus Frey, Hans P. Blaschkowski, F. A. Neugebauer, G. Guthöhrlein, Wolfgang Schäfer, Frédéric Lynen, Dorothea Kessler and Wulf Plaga and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Journal of Biological Chemistry and Annual Review of Biochemistry.

In The Last Decade

J Knappe

51 papers receiving 3.1k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
J Knappe Germany 31 2.0k 963 756 660 612 55 3.3k
Frank J. Ruzicka United States 27 1.7k 0.8× 988 1.0× 389 0.5× 251 0.4× 463 0.8× 48 2.7k
Dennis H. Flint United States 20 1.4k 0.7× 1.1k 1.1× 397 0.5× 194 0.3× 419 0.7× 31 2.6k
Maria Krook Sweden 15 1.6k 0.8× 170 0.2× 495 0.7× 232 0.4× 233 0.4× 18 2.4k
Grover L. Waldrop United States 25 1.3k 0.6× 1.6k 1.6× 865 1.1× 195 0.3× 418 0.7× 62 3.8k
Tetsuo Toraya Japan 36 3.8k 1.9× 365 0.4× 607 0.8× 141 0.2× 382 0.6× 156 4.3k
Sandrine Ollagnier de Choudens France 41 2.3k 1.1× 2.6k 2.7× 593 0.8× 152 0.2× 872 1.4× 78 4.3k
Caryn E. Outten United States 29 2.3k 1.1× 678 0.7× 469 0.6× 149 0.2× 437 0.7× 41 4.7k
Squire J. Booker United States 50 3.5k 1.7× 2.9k 3.0× 670 0.9× 498 0.8× 1.6k 2.7× 110 5.8k
Jeffrey T. Bolin United States 26 1.6k 0.8× 332 0.3× 413 0.5× 125 0.2× 892 1.5× 45 3.1k
Maria A. Vanoni Italy 28 2.0k 1.0× 150 0.2× 545 0.7× 658 1.0× 138 0.2× 87 2.7k

Countries citing papers authored by J Knappe

Since Specialization
Citations

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

Fields of papers citing papers by J Knappe

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of J Knappe

This figure shows the co-authorship network connecting the top 25 collaborators of J Knappe. A scholar is included among the top collaborators of J Knappe based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with J Knappe. J Knappe is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Wagner, Arne, et al.. (2001). YfiD of Escherichia coli and Y06I of Bacteriophage T4 as Autonomous Glycyl Radical Cofactors Reconstituting the Catalytic Center of Oxygen-Fragmented Pyruvate Formate-Lyase. Biochemical and Biophysical Research Communications. 285(2). 456–462. 81 indexed citations
2.
Kabsch, Wolfgang, J Knappe, Andreas Becker, et al.. (1999). Structure and mechanism of the glycyl radical enzyme pyruvate formate-lyase.. Nature Structural Biology. 6(10). 969–975. 168 indexed citations
3.
4.
Wagner, Arne, Markus Frey, F. A. Neugebauer, Wolfgang Schäfer, & J Knappe. (1992). The free radical in pyruvate formate-lyase is located on glycine-734.. Proceedings of the National Academy of Sciences. 89(3). 996–1000. 290 indexed citations
5.
6.
Neugebauer, F. A., et al.. (1989). The free radical of pyruvate formate‐lyase. European Journal of Biochemistry. 184(3). 723–728. 79 indexed citations
7.
Rödel, W., Wulf Plaga, Rainer Frank, & J Knappe. (1988). Primary structures of Escherichia coli pyruvate formate-lyase and pyruvate-formate-lyase-activating enzyme deduced from the DNA nucleotide sequences. European Journal of Biochemistry. 177(1). 153–158. 46 indexed citations
8.
Heinrich, Joachim, et al.. (1988). Ergebnisse einer zweijährigen Intervention zur Beeinflussung von Atherosklerosepräkursoren bei Schulkindern. Sozial- und Präventivmedizin. 33(4-5). 241–244. 1 indexed citations
9.
Plaga, Wulf, Rainer Frank, & J Knappe. (1988). Catalytic‐site mapping of pyruvate formate lyase. European Journal of Biochemistry. 178(2). 445–450. 46 indexed citations
10.
Heinrich, J J, et al.. (1987). Atherosclerosis precursors in schoolchildren--results of a two-year intervention study.. PubMed. 29(6). 421–7. 5 indexed citations
11.
Blaschkowski, Hans P., et al.. (1979). S‐ethyl‐coenzyme A and acetonyldethio‐coenzyme A. FEBS Letters. 98(1). 81–84. 17 indexed citations
12.
Knappe, J, et al.. (1974). Pyruvate Formate‐Lyase of Escherichia coli: the Acetyl‐Enzyme Intermediate. European Journal of Biochemistry. 50(1). 253–263. 144 indexed citations
13.
Knappe, J, et al.. (1974). Escherichia coli Ferredoxin, an Iron‐Sulfur Protein of the Adrenodoxin Type. European Journal of Biochemistry. 50(1). 245–252. 63 indexed citations
14.
Knappe, J. (1970). Mechanism of Biotin Action. Annual Review of Biochemistry. 39(1). 757–776. 42 indexed citations
15.
Knappe, J, et al.. (1969). Pyruvate Formate‐Lyase Reaction in Escherichia coli. European Journal of Biochemistry. 11(2). 316–327. 84 indexed citations
16.
Guthöhrlein, G. & J Knappe. (1969). Structure and Function of Carbamoylphosphate Synthetase. On the Mechanism of Bicarbonate Activation. European Journal of Biochemistry. 8(2). 207–214. 39 indexed citations
17.
Guthöhrlein, G. & J Knappe. (1968). Modified determination of citrulline. Analytical Biochemistry. 26(1). 188–191. 56 indexed citations
18.
Knappe, J, et al.. (1965). [Synthesis of biotin in beta-methylcrotonyl-CoA-carboxylase by holocarboxylase synthetase].. PubMed. 342(2). 190–206. 5 indexed citations
19.
Lynen, Frédéric, et al.. (1961). [On the biochemical function of biotin. II. Purification and mode of action of beta-methyl-crotonyl-carboxylase].. PubMed. 335. 123–67. 26 indexed citations
20.
Knappe, J, E Ringelmann, & Frédéric Lynen. (1959). [On beta-hydroxy-beta-methylglutaryl reductase of yeast. On the biosynthesis of terpene. IX].. PubMed. 332. 195–213. 14 indexed citations

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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