John H. Mangum

727 total citations
31 papers, 604 citations indexed

About

John H. Mangum is a scholar working on Molecular Biology, Rheumatology and Biochemistry. According to data from OpenAlex, John H. Mangum has authored 31 papers receiving a total of 604 indexed citations (citations by other indexed papers that have themselves been cited), including 20 papers in Molecular Biology, 12 papers in Rheumatology and 6 papers in Biochemistry. Recurrent topics in John H. Mangum's work include Folate and B Vitamins Research (12 papers), Porphyrin Metabolism and Disorders (7 papers) and Biochemical and Molecular Research (7 papers). John H. Mangum is often cited by papers focused on Folate and B Vitamins Research (12 papers), Porphyrin Metabolism and Disorders (7 papers) and Biochemical and Molecular Research (7 papers). John H. Mangum collaborates with scholars based in United States. John H. Mangum's co-authors include James A. North, Jonathan D. Brodie, Earl R. Stadtman, Giulio Magni, William M. Awad, Leo P. Vernon, Byron K. Murray, Michael J. Black, K. G. Scrimgeour and F.M. Huennekens and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Journal of Biological Chemistry and Biochemistry.

In The Last Decade

John H. Mangum

31 papers receiving 533 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
John H. Mangum United States	16	357	252	122	92	70	31	604
Milton Silverman United States	17	356 1.0×	253 1.0×	86 0.7×	153 1.7×	21 0.3×	26	790
David J. Cichowicz United States	11	365 1.0×	133 0.5×	90 0.7×	59 0.6×	37 0.5×	15	478
Marco Signorini Italy	17	245 0.7×	70 0.3×	204 1.7×	156 1.7×	75 1.1×	43	654
J. M. Noronha India	14	214 0.6×	238 0.9×	71 0.6×	121 1.3×	9 0.1×	42	575
R.L. Hancock Canada	17	530 1.5×	69 0.3×	51 0.4×	33 0.4×	22 0.3×	81	909
Spencer Rosenthal United States	10	232 0.6×	142 0.6×	29 0.2×	36 0.4×	17 0.2×	11	385
Irwin G. Leder United States	15	618 1.7×	44 0.2×	203 1.7×	94 1.0×	28 0.4×	21	1.2k
V. M. Doctor United States	15	238 0.7×	63 0.3×	30 0.2×	43 0.5×	15 0.2×	79	746
Alvaro Ortiz United States	14	230 0.6×	246 1.0×	102 0.8×	110 1.2×	24 0.3×	23	840
Jennie B. Shatton United States	14	375 1.1×	55 0.2×	64 0.5×	25 0.3×	29 0.4×	17	630

Countries citing papers authored by John H. Mangum

Since Specialization

Citations

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

Fields of papers citing papers by John H. Mangum

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John H. Mangum. 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 John H. Mangum. The network helps show where John H. Mangum may publish in the future.

Co-authorship network of co-authors of John H. Mangum

This figure shows the co-authorship network connecting the top 25 collaborators of John H. Mangum. A scholar is included among the top collaborators of John H. Mangum 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 John H. Mangum. John H. Mangum 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

Zhang, Xian Xin, Andrei V. Bordunov, Xiaolan Kou, et al.. (1997). Thermodynamic, Spectroscopic, and Structural Studies of Complexation of Phenol- and Pyridine-Armed Macrocyclic Ligands with Univalent Metal Ions. Inorganic Chemistry. 36(12). 2586–2593. 14 indexed citations

Mangum, John H., et al.. (1987). Betaine-homocysteine S-methyltransferase (human). Methods in enzymology on CD-ROM/Methods in enzymology. 143. 384–388. 11 indexed citations

Nyhan, William L., et al.. (1986). The metabolism of 3-deazaguanine and 3-deazaguanosine by human cells in culture. International Journal of Biochemistry. 18(10). 957–960. 3 indexed citations

Page, Theodore, et al.. (1985). Studies on the mechanism of cytotoxicity of 3-deazaguanosine in human cancer cells. Cancer Chemotherapy and Pharmacology. 15(1). 59–62. 7 indexed citations

Awad, William M., et al.. (1983). Evidence for direct methyl transfer in betaine: homocysteine S-methyl-transferase.. Journal of Biological Chemistry. 258(21). 12790–12792. 16 indexed citations

TEMPLE, C. JUN., L. Lee Bennett, Jerry D. Rose, et al.. (1982). ChemInform Abstract: SYNTHESIS OF PSEUDOCOFACTOR ANALOGS AS POTENTIAL INHIBITORS OF THE FOLATE ENZYMES. Chemischer Informationsdienst. 13(26). 3 indexed citations

Mangum, John H., et al.. (1982). Human hepatic methionine biosynthesis. Purification and characterization of betaine:homocysteine S-methyltransferase.. Journal of Biological Chemistry. 257(24). 14944–14948. 64 indexed citations

Braman, Jeffrey C., Michael J. Black, & John H. Mangum. (1981). Serine Transhydroxymethylase: A Simplified Radioactive Assay; Purification and Stabilization of Enzyme Activity Employing Affi-Gel Blue. Preparative Biochemistry. 11(1). 23–32. 6 indexed citations

Black, Michael J., et al.. (1978). A rapid assay for 5-amino-4-imidazelecar☐amide ribotide transformylase. Analytical Biochemistry. 90(1). 397–401. 33 indexed citations

10.

North, James A., et al.. (1976). Cooperative interactions of tetrahydrofolate with purified pig kidney serine transhydroxymethylase and loss of this cooperativity in L1210 tumors and in tissues of mice bearing these tumors.. Proceedings of the National Academy of Sciences. 73(6). 1950–1953. 12 indexed citations

11.

Mangum, John H., Giulio Magni, & Earl R. Stadtman. (1973). Regulation of glutamine synthetase adenylylation and deadenylylation by the enzymatic uridylylation and deuridylylation of the PII regulatory protein. Archives of Biochemistry and Biophysics. 158(2). 514–525. 61 indexed citations

12.

North, James A., et al.. (1972). The isolation of serine transhydroxymethylase from bovine brain. Archives of Biochemistry and Biophysics. 148(1). 196–198. 13 indexed citations

13.

Draper, Michael W., James A. North, & John H. Mangum. (1972). An assay for N5-methyltetrahydrofolate-homocysteine transmethylase activity using instant thin-layer chromatography. Analytical Biochemistry. 45(2). 653–657. 4 indexed citations

14.

North, James A., et al.. (1971). Properties of arginase from SV40-induced hamster fibrosarcomas and hamster liver tissues.. PubMed. 46(3). 615–20. 1 indexed citations

15.

Brodie, Jonathan D., et al.. (1971). Mechanism of mammalian cobalamin-dependent methionine biosynthesis. Biochemistry. 10(16). 3079–3085. 51 indexed citations

16.

Brodie, Jonathan D., et al.. (1970). Methylcobalamin as an intermediate in mammalian methionine biosynthesis. Biochemistry. 9(22). 4297–4302. 20 indexed citations

17.

Mangum, John H., Byron K. Murray, & James A. North. (1969). Vitamin B12 dependent methionine biosynthesis in cultured mammalian cells. Biochemistry. 8(9). 3496–3499. 42 indexed citations

18.

Mangum, John H. & James A. North. (1968). Vitamin B12 dependent methionine biosynthesis in HEp-2 cells. Biochemical and Biophysical Research Communications. 32(1). 105–110. 24 indexed citations

19.

Vernon, Leo P. & John H. Mangum. (1960). Cytochromes of Bacillus megaterium and Bacillus subtilis. Archives of Biochemistry and Biophysics. 90(1). 103–104. 19 indexed citations

20.

Vernon, Leo P., et al.. (1960). Studies on a ferrous-ion-oxidizing bacterium. II. Cytochrome composition. Archives of Biochemistry and Biophysics. 88(2). 227–231. 28 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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