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Protein and Peptide Letters is Scopus-indexed (Q3, CiteScore 2.8), WoS SCIE. Published by Bentham Science Publishers.
Checked against the index lists dated .
ISSN 0929-8665Verify ISSN ↗1875-5305Verify ISSN ↗
Publisher: Bentham Science Publishers
Cost to publish: No APC data — check the publisher
| Subject area | Rank | Pctile | Q |
|---|---|---|---|
| Biochemistry | 330 / 448 | 26th | Q3 |
| Structural Biology | 39 / 51 | 24th | Q4 |
Not listed in: DOAJ, ABDC, ABS / AJG, FT50, UT Dallas, ONOS (subscription), ONOS (APC covered)
Yes — actively indexed in Scopus, coverage 1994–present, best quartile Q3, CiteScore 2.8.
Protein and Peptide Letters is Q3 in Biochemistry (rank 330 of 448) and Q4 in Structural Biology (rank 39 of 51), by CiteScore 2025.
Protein and Peptide Letters is indexed in the Science Citation Index Expanded, so it may have a Journal Impact Factor in Clarivate's Journal Citation Reports. JCR is paid, so check it for the current value. The closest free measure is its Scopus CiteScore 2.8, which places it in quartile Q3 at the 26th percentile of its subject. Its SCImago Journal Rank (SJR, a free Scopus-based metric) is 0.466, quartile Q3, with an H-index of 71.
Protein and Peptide Letters is published by Bentham Science Publishers. Its print ISSN is 0929-8665 and its online ISSN is 1875-5305.
Yes — indexed in the Science Citation Index Expanded.
No — it is not registered as an open-access journal in DOAJ or Scopus.
Protein and Peptide Letters has an h-index of 74 and a 2-year mean of 4.22 citations per paper (OpenAlex). Its Scopus CiteScore is 2.8, quartile Q3. On 2-year citations it ranks #108 of 442 Scopus journals in Biochemistry.
Protein and Peptide Letters published 58 papers in 2025; its busiest recent year was 2018 with 174. 2026* is the year so far.
h-index, i10-index and 2-year mean citedness are open, licence-clear metrics from OpenAlex — not a proprietary impact factor. The subject rank counts only journals that OpenAlex has a figure for; it is not a Scopus or Clarivate ranking. Updated 2026-10-14.
In its latest 96 research articles (2025–2026), authors are most often from India (30%), China (25.5%) and Iran (8.3%).
Countries are counted fractionally, so a paper by authors from two countries counts half to each.
Scopus status: Active. 3 retracted papers are recorded (0.8 per 1,000 papers). The Problematic Paper Screener flags none of its papers. These are indicators to check, not findings against the journal.
Retractions from OpenAlex; flags from the Problematic Paper Screener (Cabanac, Labbé & Magazinov, CC BY), 2026-09-21 export. A flag marks a paper for a closer look; it is not a finding against the journal.
Index data is curated from public sources (Scopus, Web of Science, ABDC, FT50, UT Dallas, DOAJ). CiteScore and quartiles reflect the latest available Scopus release. Always verify a journal's current status on its official source before submitting.
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