Reet Koljak

443 total citations
9 papers, 371 citations indexed

About

Reet Koljak is a scholar working on Biotechnology, Pharmacology and Biochemistry. According to data from OpenAlex, Reet Koljak has authored 9 papers receiving a total of 371 indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Biotechnology, 7 papers in Pharmacology and 3 papers in Biochemistry. Recurrent topics in Reet Koljak's work include Marine Sponges and Natural Products (8 papers), Microbial Natural Products and Biosynthesis (5 papers) and Inflammatory mediators and NSAID effects (3 papers). Reet Koljak is often cited by papers focused on Marine Sponges and Natural Products (8 papers), Microbial Natural Products and Biosynthesis (5 papers) and Inflammatory mediators and NSAID effects (3 papers). Reet Koljak collaborates with scholars based in Estonia, United States and Belarus. Reet Koljak's co-authors include Nigulas Samel, Alan Brash, Ivar Järving, Külliki Varvas, Tõnis Pehk, Bih‐Hwa Shieh, Olivier Boutaud, Karin Valmsen, William E. Boeglin and Ü Lille and has published in prestigious journals such as Science, Proceedings of the National Academy of Sciences and Journal of Biological Chemistry.

In The Last Decade

Reet Koljak

9 papers receiving 367 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Reet Koljak Estonia	9	171	121	115	81	65	9	371
Külliki Varvas Estonia	12	153 0.9×	133 1.1×	113 1.0×	54 0.7×	60 0.9×	13	372
Karin Valmsen Estonia	8	89 0.5×	110 0.9×	141 1.2×	40 0.5×	98 1.5×	11	371
Roy K. Okuda United States	10	159 0.9×	70 0.6×	83 0.7×	160 2.0×	26 0.4×	12	394
Mamoru Endo Japan	12	169 1.0×	77 0.6×	203 1.8×	209 2.6×	34 0.5×	17	606
Taiko Oda Japan	18	219 1.3×	171 1.4×	262 2.3×	299 3.7×	19 0.3×	66	849
Antonio Crispino Italy	19	468 2.7×	253 2.1×	127 1.1×	273 3.4×	54 0.8×	45	756
Cameron J. Smith United States	14	132 0.8×	232 1.9×	233 2.0×	224 2.8×	31 0.5×	22	633
Stephen W. Ayer Canada	20	182 1.1×	304 2.5×	438 3.8×	233 2.9×	26 0.4×	33	970
Eric J. Dumdei New Zealand	12	534 3.1×	326 2.7×	129 1.1×	265 3.3×	36 0.6×	13	691
Shirley Parker‐Nance South Africa	9	182 1.1×	147 1.2×	77 0.7×	101 1.2×	22 0.3×	23	332

Countries citing papers authored by Reet Koljak

Since Specialization

Citations

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

Fields of papers citing papers by Reet Koljak

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Reet Koljak

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

All Works

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9 of 9 papers shown

Koljak, Reet, Ivar Järving, Reet Kurg, et al.. (2001). The Basis of Prostaglandin Synthesis in Coral. Journal of Biological Chemistry. 276(10). 7033–7040. 52 indexed citations

Valmsen, Karin, Ivar Järving, William E. Boeglin, et al.. (2001). The origin of 15 R -prostaglandins in the Caribbean coral Plexaura homomalla : Molecular cloning and expression of a novel cyclooxygenase. Proceedings of the National Academy of Sciences. 98(14). 7700–7705. 58 indexed citations

Varvas, Külliki, Ivar Järving, Reet Koljak, et al.. (1999). Evidence of a Cyclooxygenase-related Prostaglandin Synthesis in Coral. Journal of Biological Chemistry. 274(15). 9923–9929. 42 indexed citations

Koljak, Reet, et al.. (1998). New cytotoxic sterols from the soft coral Gersemia fruticosa. Tetrahedron. 54(1-2). 179–186. 25 indexed citations

Koljak, Reet, Olivier Boutaud, Bih‐Hwa Shieh, Nigulas Samel, & Alan Brash. (1997). Identification of a Naturally Occurring Peroxidase-Lipoxygenase Fusion Protein. Science. 277(5334). 1994–1996. 103 indexed citations

Paves, Heiti, et al.. (1994). The effect of 9,11-secosterol, a newly discovered compound from the soft coral Gersemia fruticosa, on the growth and cell cycle progression of various tumor cells in culture. Steroids. 59(4). 274–281. 22 indexed citations

Varvas, Külliki, Reet Koljak, Ivar Järving, Tõnis Pehk, & Nigulas Samel. (1994). Endoperoxide pathway in prostaglandin biosynthesis in the soft coral Gersemia fruticosa. Tetrahedron Letters. 35(44). 8267–8270. 21 indexed citations

Varvas, Külliki, Ivar Järving, Reet Koljak, et al.. (1993). In vitro biosynthesis of prostaglandins in the White Sea soft coral Gersemia fruticosa: Formation of optically active PGD2, PGE2, PGF2α and 15-keto-PGF2α from arachidonic acid. Tetrahedron Letters. 34(22). 3643–3646. 19 indexed citations

Koljak, Reet, Tõnis Pehk, Ivar Järving, et al.. (1993). New antiproliferative 9,11-secosterol from soft coral gersemia fruticosa. Tetrahedron Letters. 34(12). 1985–1986. 29 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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