Paul X. Callahan

658 citations
21 papers · 546 indexed · h-index 11
Topics
Peptidase Inhibition and Analysis (5 papers)Spaceflight effects on biology (4 papers)Neuropeptides and Animal Physiology (4 papers)
Partner nations
United States

In The Last Decade

Paul X. Callahan

21 papers receiving 484 citations

Peers

Paul X. Callahan
Comparison fields: 5 of 86
  • Molecular Biology 311
  • Oncology 142
  • Endocrinology, Diabetes and Metabolism 95
  • Cellular and Molecular Neuroscience 81
  • Physiology 50
Replace A.A.J. van Landeghem with:
A.A.J. van Landeghem Netherlands
A R Saltiel United States
V Iwanij United States
Guo-Fen Tu Australia
T. Kawashima Japan
F. Willig Germany
Vivian Sarabia Canada
Katalin Pintér United Kingdom
J Kirk United Kingdom
Maria Teresa C.P. Ribela Brazil
Paul X. Callahan relative to A.A.J. van Landeghem Netherlands A.A.J. van Landeghem's profile →
Citations per field
00.5×7.4×
A.A.J. van Landeghem · 1×
Citations per year

Countries citing papers authored by Paul X. Callahan

Since Specialization
Citations

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

Fields of papers citing papers by Paul X. Callahan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Paul X. Callahan. 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 Paul X. Callahan. The network helps show where Paul X. Callahan may publish in the future.

Co-authorship network of co-authors of Paul X. Callahan

This figure shows the co-authorship network connecting the top 25 collaborators of Paul X. Callahan. A scholar is included among the top collaborators of Paul X. Callahan 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 Paul X. Callahan. Paul X. Callahan 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
#WorkIndexed citations
1 2
2
Life into Space: Space Life Sciences Experiments, Ames Research Center, Kennedy Space Center, 1991-1998, Including Profiles of 1996-1998 Experiments
3
3 1
4 5
5 4
6 59
7 19
8 18
9 34
10 4
11
Separation of the phenylalanyl and alanyl chains of bovine and ovine growth hormones by electrofocusing
3
12
Polypeptide degradation by dipeptidyl aminopeptidase I /cathepsin C/ and related peptidases
61
13 26
14 2
15 51
16 38
17 26
18
Amino acid composition of a facultative hydrogen bacterium
2
19 167
20 16

About Paul X. Callahan

Paul X. Callahan is a scholar working on Endocrinology, Diabetes and Metabolism, Oncology and Cellular and Molecular Neuroscience, having authored 21 papers that have together received 546 indexed citations. Recurring topics across this work include Peptidase Inhibition and Analysis (5 papers), Spaceflight effects on biology (4 papers) and Neuropeptides and Animal Physiology (4 papers). The work is most often cited by research in Equine (17 citations), Endocrinology, Diabetes and Metabolism (95 citations) and Oncology (142 citations). Paul X. Callahan has collaborated with scholars based in United States. Frequent co-authors include David C. Lamb, J. M. Neelin, Kenneth Murray, Stanley Ellis, J. Ken McDonald, S. Ellis, R. E. Grindeland, Benjamin B. Zeitman, Richard E. Smith and Jennifer McDonald. Their work appears in journals such as Journal of Biological Chemistry, Analytical Biochemistry and Endocrinology.

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

Rankless by CCL
2026