Shawn DeFrees

2.4k total citations
31 papers, 1.9k citations indexed

About

Shawn DeFrees is a scholar working on Molecular Biology, Organic Chemistry and Immunology and Allergy. According to data from OpenAlex, Shawn DeFrees has authored 31 papers receiving a total of 1.9k indexed citations (citations by other indexed papers that have themselves been cited), including 21 papers in Molecular Biology, 12 papers in Organic Chemistry and 8 papers in Immunology and Allergy. Recurrent topics in Shawn DeFrees's work include Glycosylation and Glycoproteins Research (12 papers), Cell Adhesion Molecules Research (8 papers) and Carbohydrate Chemistry and Synthesis (6 papers). Shawn DeFrees is often cited by papers focused on Glycosylation and Glycoproteins Research (12 papers), Cell Adhesion Molecules Research (8 papers) and Carbohydrate Chemistry and Synthesis (6 papers). Shawn DeFrees collaborates with scholars based in United States, Canada and Denmark. Shawn DeFrees's co-authors include James C. Paulson, Samuel Zalipsky, John M. Cassady, F C Gaeta, Warren W. Wakarchuk, Yoshitaka Ichikawa, Guo Qiang Zheng, Robert L. Geahlen, Lisa A. Paige and Stephen G. Withers and has published in prestigious journals such as Journal of the American Chemical Society, Journal of Clinical Investigation and The Journal of Experimental Medicine.

In The Last Decade

Shawn DeFrees

31 papers receiving 1.8k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Shawn DeFrees United States	26	1.3k	777	328	325	251	31	1.9k
Mark R. Stroud United States	21	1.1k 0.8×	277 0.4×	355 1.1×	185 0.6×	200 0.8×	28	1.6k
Karel Bezouška Czechia	26	1.3k 1.0×	508 0.7×	657 2.0×	85 0.3×	177 0.7×	81	2.1k
Jason E. Hudak United States	11	1.1k 0.9×	477 0.6×	303 0.9×	95 0.3×	239 1.0×	16	1.6k
Marko Fonovič Slovenia	24	1.5k 1.2×	590 0.8×	203 0.6×	158 0.5×	176 0.7×	49	2.7k
Hiroaki Nakagawa Japan	31	1.9k 1.4×	674 0.9×	390 1.2×	81 0.2×	432 1.7×	98	2.5k
Akihiko Kameyama Japan	33	2.4k 1.8×	1.2k 1.5×	594 1.8×	139 0.4×	284 1.1×	93	3.1k
Toshiyuki Inazu Japan	26	2.5k 1.9×	1.6k 2.0×	228 0.7×	60 0.2×	124 0.5×	89	2.8k
Sophie Faure France	26	1.2k 0.9×	983 1.3×	330 1.0×	90 0.3×	102 0.4×	69	2.0k
Mamoru Mizuno Japan	25	2.1k 1.6×	957 1.2×	247 0.8×	48 0.1×	178 0.7×	86	2.4k
Harvey J. Sage United States	24	1.2k 0.9×	160 0.2×	342 1.0×	150 0.5×	189 0.8×	49	1.9k

Countries citing papers authored by Shawn DeFrees

Since Specialization

Citations

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

Fields of papers citing papers by Shawn DeFrees

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Shawn DeFrees

This figure shows the co-authorship network connecting the top 25 collaborators of Shawn DeFrees. A scholar is included among the top collaborators of Shawn DeFrees 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 Shawn DeFrees. Shawn DeFrees is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Wu, Gusheng, et al.. (2020). Mice deficient in GM1 manifest both motor and non-motor symptoms of Parkinson's disease; successful treatment with synthetic GM1 ganglioside. Experimental Neurology. 329. 113284–113284. 43 indexed citations

Du, Ting, et al.. (2018). A Bacterial Expression Platform for Production of Therapeutic Proteins Containing Human-like O-Linked Glycans. Cell chemical biology. 26(2). 203–212.e5. 40 indexed citations

Brenneman, Douglas E., David A. Pearce, Attila Kovács, & Shawn DeFrees. (2017). Pharmacological Effects on Ceroid Lipofuscin and Neuronal Structure in Cln3 ∆ex7/8 Mouse Brain Cultures. Journal of Molecular Neuroscience. 63(1). 100–114. 4 indexed citations

Rao, Francesco, Jamie R. Rich, Bojana Rakić, et al.. (2009). Structural insight into mammalian sialyltransferases. Nature Structural & Molecular Biology. 16(11). 1186–1188. 104 indexed citations

Σκρέτας, Γεώργιος, et al.. (2009). Expression of active human sialyltransferase ST6GalNAcI in Escherichia coli. Microbial Cell Factories. 8(1). 50–50. 25 indexed citations

Bernatchez, Stéphane, Michel Gilbert, Marie-France Karwaski, et al.. (2007). Variants of the β1,3-Galactosyltransferase CgtB from the Bacterium Campylobacter Jejuni have Distinct Acceptor Specificities. Glycobiology. 17(12). 1333–1343. 40 indexed citations

DeFrees, Shawn, Zhiguang Wang, Ruye Xing, et al.. (2006). GlycoPEGylation of recombinant therapeutic proteins produced in Escherichia coli. Glycobiology. 16(9). 833–843. 125 indexed citations

Alexander, Jeff, Marie‐France del Guercio, Ajesh Maewal, et al.. (2000). Linear PADRE T Helper Epitope and Carbohydrate B Cell Epitope Conjugates Induce Specific High Titer IgG Antibody Responses. The Journal of Immunology. 164(3). 1625–1633. 149 indexed citations

Gilbert, Michel, Robert Bayer, Anna‐Maria Cunningham, et al.. (1998). The synthesis of sialylated oligosaccharides using a CMP-Neu5Ac synthetase/sialyltransferase fusion. Nature Biotechnology. 16(8). 769–772. 102 indexed citations

10.

Nguyen, Mai, Frederick R. Eilber, & Shawn DeFrees. (1996). Novel Synthetic Analogs of Sialyl Lewis X Can Inhibit Angiogenesisin Vitroandin Vivo. Biochemical and Biophysical Research Communications. 228(3). 716–723. 32 indexed citations

11.

Nicolaou, K.C., M. E. DUGGAN, David A. Nugiel, et al.. (1995). Total Synthesis of Brevetoxin B. 1. First Generation Strategies and New Approaches to Oxepane Systems. Journal of the American Chemical Society. 117(41). 10227–10238. 86 indexed citations

12.

Ramphal, John, et al.. (1994). Structure-Activity Relationships of Sialyl Lewis x-Containing Oligosaccharides. 1. Effect of Modifications of the Fucose Moiety. Journal of Medicinal Chemistry. 37(21). 3459–3463. 80 indexed citations

13.

Asako, Hiroshi, Iwao Kurose, R. Wolf, et al.. (1994). Role of H1 receptors and P-selectin in histamine-induced leukocyte rolling and adhesion in postcapillary venules.. Journal of Clinical Investigation. 93(4). 1508–1515. 124 indexed citations

14.

Mulligan, Michael S., John B. Lowe, Robert D. Larsen, et al.. (1993). Protective effects of sialylated oligosaccharides in immune complex-induced acute lung injury.. The Journal of Experimental Medicine. 178(2). 623–631. 93 indexed citations

15.

Paige, Lisa A., Guo Qiang Zheng, Shawn DeFrees, John M. Cassady, & Robert L. Geahlen. (1990). Metabolic activation of 2-substituted derivatives of myristic acid to form potent inhibitors of myristoyl CoA:protein N-myristoyltransferase. Biochemistry. 29(46). 10566–10573. 80 indexed citations

16.

DeFrees, Shawn, et al.. (1988). Structure-activity relationships of pyrimidines as dihydroorotate dehydrogenase inhibitors. Biochemical Pharmacology. 37(20). 3807–3816. 26 indexed citations

17.

Nicolaou, K. C., C.‐K. HWANG, Shawn DeFrees, & N. Stylianides. (1988). Novel chemistry of dithiatopazine. Journal of the American Chemical Society. 110(14). 4868–4869. 42 indexed citations

18.

DeFrees, Shawn, et al.. (1988). A Selective and Efficient Method for the Deprotection of N-Benzyloxymethyl (BOM) Protecting Groups from Pyrimidine and Dihydropyrimidine Ring Systems. Synthetic Communications. 18(2). 213–220. 7 indexed citations

19.

Elliott, William L., et al.. (1984). Cyclic modulation of enzymes of pyrimidine nucleotide biosynthesis precedes sialoglycoconjugate changes during 2-acetylaminofluorene-induced hepatocarcinogenesis in the rat. Biochimica et Biophysica Acta (BBA) - General Subjects. 800(2). 194–201. 14 indexed citations

20.

Risley, John M., Shawn DeFrees, & Robert L. Van Etten. (1983). ¹⁸O‐isotope effect in ¹³C nuclear magnetic resonance spectroscopy: 5—Substituent group electronic effects in substituted acetophenones. Organic Magnetic Resonance. 21(1). 28–35. 13 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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