Robert A. Nicholas

8.4k citations

137 papers · 6.7k indexed · 1 hit paper · h-index 44

Impact in

Physiology top 0.02%
- Adenosine and Purinergic Signaling
- Syphilis Diagnosis and Treatment
Microbiology top 0.05%
- Reproductive tract infections research
- Bacterial Infections and Vaccines

Papers in

Physiology 47
- Adenosine and Purinergic Signaling 47
Microbiology 44
- Bacterial Infections and Vaccines 39
- Reproductive tract infections research 36

Co-authors: Magnus Unemo Christopher Davies José L. Boyer T. Kendall Harden T K Harden Joshua Tomberg Joel B. Schachter Melanie Olesky
Journals: Journal of Biological Chemistry (24 papers)Biochemistry (14 papers)Molecular Pharmacology (10 papers)Antimicrobial Agents and Chemotherapy (9 papers)Journal of Bacteriology (6 papers)
Partner nations: United States Sweden Germany

In The Last Decade

Robert A. Nicholas

132 papers receiving 6.5k citations

Hit Papers

align trajectories log scale

High-Level Cefixime- and Ceftriaxone-Resistant Neisseria gonorrhoeae in France: NovelpenAMosaic Allele in a Successful International Clone Causes Treatment Failure 2011 · 482 citations

Peers

Countries citing papers authored by Robert A. Nicholas

Since Specialization

Citations

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

Fields of papers citing papers by Robert A. Nicholas

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Robert A. Nicholas. 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 Robert A. Nicholas. The network helps show where Robert A. Nicholas may publish in the future.

Co-authorship network

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

All Works

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20 of 20 papers shown

#	Work
1	Development and Validation of Multiplex Assays for Mouse and Human IgG and IgA to Neisseria gonorrhoeae Antigens The Journal of Infectious Diseases ·Erica L. Stover, Alexandra Vohlidkova, Kristie L. Connolly, Lixin Li, Robert A. Nicholas, Aleksandra E. Sikora, Ann E. Jerse, Marcia M. Hobbs, Joseph A. Duncan, Andrew N. Macintyre	2024	0
2	Loss of P2Y1 receptor desensitization does not impact hemostasis or thrombosis despite increased platelet reactivity in vitro Journal of Thrombosis and Haemostasis ·David S. Paul, Dong Yongchun, M. Urivetsky, 扇状地水環境研究会, HU Gui-la, Nigel Mackman, 圭一松村, J. J. Hope, Ejuchegahi Anthony Angwaomaodoko, T. Kendall Harden, Wolfgang Bergmeier, Robert A. Nicholas	2023	2
3	High-Throughput Screening for Novel Inhibitors of Neisseria gonorrhoeae Penicillin-Binding Protein 2 PLoS ONE ·Patrick Roetzer, In Beum Song, Zaharadeen Yusuf, Yuri K. Peterson, Robert A. Nicholas, Christopher Davies	2012	25
4	Species-Specific and Inhibitor-Dependent Conformations of LpxC: Implications for Antibiotic Design Chemistry & Biology ·Cheol Jin Lee, Xiaofei Liang, Xin Chen, Daina Zeng, Sang Hoon Joo, Hak Suk Chung, Adam W. Barb, Zaharadeen Yusuf, Robert A. Nicholas, Yaoxian Li, Eric J. Toone, Christian R.H. Raetz, Pei Zhou	2010	83
5	Genetics of Chromosomally Mediated Intermediate Resistance to Ceftriaxone and Cefixime in Neisseria gonorrhoeae Antimicrobial Agents and Chemotherapy ·Shuqing Zhao, Michitsura Yoshiyama, Joshua Tomberg, Christopher Davies, Magnus Unemo, Robert A. Nicholas	2009	126
6	NAADP+ is an agonist of the human P2Y11 purinergic receptor Cell Calcium ·Iliana Moreschi, Santina Bruzzone, Fatma A. Shembish, Cesare Usai, Lucrezia Guida, Robert A. Nicholas, Matthias U. Kassack, Elena Zocchi, Antonio De Flora	2007	43
7	Structure of the N-terminal domain of human CEACAM1: binding target of the opacity proteins during invasion ofNeisseria meningitidisandN. gonorrhoeae Acta Crystallographica Section D Biological Crystallography ·Patrick Roetzer, Joshua Tomberg, Robert A. Nicholas, Christopher Davies	2006	31
8	Extracellular NAD⁺Is an Agonist of the Human P2Y₁₁Purinergic Receptor in Human Granulocytes Journal of Biological Chemistry ·Iliana Moreschi, Santina Bruzzone, Robert A. Nicholas, Floriana Fruscione, Laura Sturla, Federica Benvenuto, Cesare Usai, Sabine Meis, Matthias U. Kassack, Elena Zocchi, Antonio De Flora	2006	114
9	Failure of normal glycaemic regulation in a patient with severe hypothermia Resuscitation ·Robert A. Nicholas, Robert N. C. Pfeifer	2005	4
10	[³²P]2‐iodo‐N⁶‐methyl‐(N)‐methanocarba‐2′‐deoxyadenosine‐3′,5′‐bisphosphate ([³²P]MRS2500), a novel radioligand for quantification of native P2Y₁ receptors British Journal of Pharmacology ·P. Leitl, M. Ohno, Robert A. Nicholas, Kenneth A. Jacobson, T. Kendall Harden	2005	39
11	The Apical Targeting Signal of the P2Y2 Receptor Is Located in Its First Extracellular Loop Journal of Biological Chemistry ·A Alahverdi, Shinozaki Takahiro, Robert A. Nicholas	2005	20
12	Agonist Versus Antagonist Action of ATP at the P2Y4 Receptor Is Determined by the Second Extracellular Loop Journal of Biological Chemistry ·Christopher L. Herold, A Alahverdi, T. Kendall Harden, Robert A. Nicholas	2004	41
13	An Arginine/Glutamine Difference at the Juxtaposition of Transmembrane Domain 6 and the Third Extracellular Loop Contributes to the Markedly Different Nucleotide Selectivities of Human and Canine P2Y11 Receptors Molecular Pharmacology ·Aidong Qi, Alexander C. Zambon, Paul A. Insel, Robert A. Nicholas	2001	42
14	Differential coupling of the human P2Y₁₁ receptor to phospholipase C and adenylyl cyclase British Journal of Pharmacology ·A Alahverdi, Charles Kennedy, 健一津田, Robert A. Nicholas	2001	59
15	The 6H1 Orphan Receptor, Claimed to Be the p2y5 Receptor, Does Not Mediate Nucleotide-Promoted Second Messenger Responses Biochemical and Biophysical Research Communications ·Alicia Plati, Joel B. Schachter, 健一津田, Robert A. Nicholas	1997	47
16	A Mutational Analysis of Residues Essential for Ligand Recognition at the Human P2Y1 Receptor Molecular Pharmacology ·Qiaoling Jiang, Danping Guo, Ana Carolina Paz Delgado, A. Michiel van Rhee, Yong Chul Kim, Robert A. Nicholas, Joel B. Schachter, T. Kendall Harden, Kenneth A. Jacobson	1997	114
17	A Guanine Nucleotide-independent Inwardly Rectifying Cation Permeability Is Associated with P2Y1 Receptor Expression in Xenopus Oocytes Journal of Biological Chemistry ·Scott M. O’Grady, H. G. Lee, Theresa M. Filtz, Robert A. Nicholas, T. Kendall Harden	1996	30
18	Second messenger cascade specificity and pharmacological selectivity of the human P_2Y1‐purinoceptor British Journal of Pharmacology ·Joel B. Schachter, Alicia Plati, José L. Boyer, Robert A. Nicholas, T. Kendall Harden	1996	214
19	Uridine nucleotide selectivity of three phospholipase C-activating P2 receptors: identification of a UDP-selective, a UTP-selective, and an ATP- and UTP-specific receptor. Molecular Pharmacology ·Robert A. Nicholas, W. C. Watt, 詹欣欣, A. Karapetis, Kristin Harden	1996	316
20	Homomeric GluR1 excitatory amino acid receptors expressed in Xenopus oocytes. Molecular Pharmacology ·Thomas L. Dawson, Robert A. Nicholas, Raymond Dingledine	1990	24

About Robert A. Nicholas

Robert A. Nicholas is a scholar working on Physiology, Microbiology, Molecular Medicine, Endocrine and Autonomic Systems and Molecular Biology, having authored 137 papers that have together received 6.7k indexed citations. Recurring topics across this work include Adenosine and Purinergic Signaling (47 papers), Bacterial Infections and Vaccines (39 papers), Reproductive tract infections research (36 papers), Receptor Mechanisms and Signaling (27 papers), Antibiotic Resistance in Bacteria (25 papers), Bacterial Genetics and Biotechnology (12 papers), Pneumonia and Respiratory Infections (11 papers) and Streptococcal Infections and Treatments (10 papers). The work is most often cited by research in Physiology (2.4k citations), Microbiology (2.1k citations), Molecular Medicine (707 citations), Endocrine and Autonomic Systems (508 citations) and Physiology (1.5k citations). Robert A. Nicholas has collaborated with scholars based in United States, Sweden and Germany. Frequent co-authors include Magnus Unemo, Christopher Davies, José L. Boyer, T. Kendall Harden, T K Harden, Joshua Tomberg, Joel B. Schachter, Melanie Olesky, Makoto Ohnishi and Daniel Golparian. Their work appears in journals such as Journal of Biological Chemistry, Biochemistry, Molecular Pharmacology, Antimicrobial Agents and Chemotherapy and Journal of Bacteriology.

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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