The EMBO Journal Formatting Requirements: Complete Author Guide

The EMBO Journal uses short, unstructured abstracts.

• Word limit: 175 words maximum
• Structure: Single paragraph, no headings
• No citations allowed
• Keywords: 3-5 keywords listed below the abstract
• Content: Must describe the question, the key findings, and the significance

The 175-word abstract is shorter than most comparable journals. Nature allows 150 words, but most cell biology journals allow 200-250. You'll need to be concise. Focus on the main finding and its mechanistic significance. Don't list every experiment.

Write the abstract last, after the paper is finished. It's tempting to draft it early, but for a 175-word limit, you need to know exactly what your paper's strongest finding is before you try to compress it.

The EMBO Journal doesn't impose a strict figure cap for Research Articles, but most published papers include 7-8 main figures. The journal's expanded view format allows additional panels and figure supplements.

Figure requirements:

Figure supplements (Expanded View):

The EMBO Journal uses an "Expanded View" system. Each main figure can have associated Expanded View figures (EV figures) that provide supporting data. These aren't buried in supplementary material; they're linked directly to the relevant main figure and displayed alongside it in the online article. EV figures are peer reviewed and considered part of the paper.

This is a distinctive EMBO feature. Instead of a 50-page supplementary PDF, you organize supporting data as EV figures tied to specific main figures. It's a better system for readers, but it requires more careful figure planning during manuscript preparation.

Table requirements:

• Editable Word tables (not images)
• Every column needs a header
• Minimal horizontal rules
• No vertical lines
• SI units throughout
• Define abbreviations in footnotes

Source data requirements (critical):

The EMBO Journal requires source data for key experiments:

• Western blots: Uncropped blot images with molecular weight markers
• Gels: Full uncropped gel images
• Graphs: Numerical source data files (Excel or CSV)
• Microscopy: Raw image files where applicable

Source data is published alongside the paper and linked to the relevant figure. This isn't optional. Failure to provide source data will halt your manuscript during production. Prepare these files as you generate the data, not after acceptance.

The EMBO Journal uses an author-date (Harvard-type) reference style specific to EMBO publications.

In-text citations: (Author, Year) format. Two authors: (Smith and Jones, 2025). Three or more: (Smith et al, 2025). Multiple citations separated by commas: (Smith, 2020, Jones et al, 2023, Brown, 2025).

Reference list format (alphabetical):

Smith AB, Jones CD, Brown EF (2025) Mechanism of mitotic checkpoint silencing by the RZZ complex. EMBO J 44: 1234-1256

Key formatting rules:

• Author surnames followed by initials without periods (e.g., "Smith AB" not "Smith, A. B.")
• Year in parentheses after author names
• Article title in sentence case, no quotation marks
• Journal title in italics, abbreviated
• Volume number followed by colon and page range
• No "pp." before page numbers
• DOIs typically not included in the reference list (but check current requirements)
• "et al" without a period (EMBO style)

The EMBO reference style has specific quirks. The "et al" without a period catches many authors. There's no comma between the last author and the year. Journal abbreviations follow standard conventions but don't include periods. These details are small but noticeable in production.

EMBO reference style is different enough from standard Harvard that you shouldn't use a generic citation manager style. Both Zotero and EndNote have EMBO Journal-specific styles, but verify the output against a recently published paper.

Beyond Expanded View figures, The EMBO Journal supports additional supplementary datasets.

Supplementary dataset types:

• Source data files (required for key experiments)
• Large datasets (RNA-seq, proteomics, metabolomics)
• Additional tables too large for the main text or EV
• Videos and animations
• Code repositories

Data deposition requirements:

• Genomic data: GEO or ArrayExpress
• Proteomics data: PRIDE or ProteomeXchange
• Structural data: PDB for protein structures, EMDB for electron microscopy maps
• Sequencing data: ENA or SRA

EMBO Press has been at the forefront of data transparency. The journal expects all primary datasets to be deposited in appropriate public repositories with accession numbers cited in the manuscript. This isn't just a suggestion; reviewers are instructed to check for data availability.

Both are accepted, with Word being more common.

Word submissions:

• Standard fonts (Times New Roman or Arial, 12-point)
• Double-spaced
• Line numbers and page numbers
• Figures can be embedded or placed at the end
• Methods section at the end of the main text

LaTeX submissions:

• Standard article class (no EMBO-specific template)
• Submit compiled PDF and source files
• Include all bibliography files
• Standard LaTeX packages only

The EMBO Journal's audience is primarily molecular and cell biologists, and Word dominates in this field. LaTeX makes sense if your paper includes heavy bioinformatics or computational modeling with extensive equations. Otherwise, Word is the safer choice.

The EMBO Journal has several practices that distinguish it from other molecular biology journals.

1. Transparent peer review. The EMBO Journal publishes the peer review process file alongside the accepted paper. This includes the referee reports, author responses, and editorial decision letters. It's opt-out (authors can decline), but most choose to participate. Keep this in mind when writing your response to reviewers; it'll be public.

2. Cross-referee review. After the first round of review, referees see each other's reports before the author response. This allows referees to discuss the paper and can lead to more coherent revision requests. It's unusual among journals and affects how you should frame your response.

3. Source data mandate. As detailed above, source data for key figures isn't optional. Uncropped Western blots, raw gel images, and numerical data for graphs are all required. This has been EMBO policy for several years, and it's one of the strictest data integrity policies in the field.

4. The "scooping protection" policy. EMBO has a policy where if a competing paper is published while yours is under review, the editors won't reject your paper solely on that basis. They'll consider the papers independently. This is formally stated and gives some protection against the fear of being scooped during review.

5. Expanded View is not supplementary material. EV figures are part of the paper, not supplementary. Reviewers evaluate them as they would main figures. Don't use EV as a dumping ground for weak data. Treat EV figures with the same rigor as main figures.

6. No cover letter required. The EMBO Journal doesn't require a formal cover letter. Instead, the submission system asks you to provide a brief statement about why the work is suitable for the journal. Keep it to 2-3 sentences.

7. Author contributions in CRediT format. The EMBO Journal expects author contributions listed using the CRediT (Contributor Roles Taxonomy) system. Each author's specific roles should be identified from the CRediT list.

Based on frequent issues at The EMBO Journal:

• Missing source data for Western blots or gels
• Exceeding the 175-word abstract limit
• Using incorrect reference style (Vancouver instead of EMBO author-date)
• "et al." with a period (EMBO uses "et al" without)
• Treating Expanded View figures as low-priority supplementary material
• Not depositing genomic/proteomic data in public repositories
• Missing CRediT author contributions

For quick answers to the most common EMBO Journal formatting questions, see the FAQ section at the top of this page.

In our pre-submission review work with manuscripts targeting The EMBO Journal, four patterns generate the most consistent desk-rejection outcomes.

Novelty framing does not meet the "conceptual advance" threshold. The EMBO Journal's editorial standard requires that every paper present a conceptual advance, not just new data. Papers that generate a comprehensive dataset (proteomics screen, CRISPR library, structural determination) without articulating a new principle or framework in molecular or cell biology are desk-rejected. The cover letter and abstract must explicitly state what new concept the paper establishes, not only what was measured.

Data reproducibility requirements for quantitative imaging not met. EMBO journals apply strict quantitative microscopy standards: all fluorescence microscopy data must include statistical analysis across biological replicates (minimum 3), not just technical replicates. Papers reporting n values that reflect fields of view or cells rather than independent biological experiments are returned for revision before peer review. The EMBO data policy explicitly requires raw data deposition in OMERO or equivalent.

Mechanistic claim not supported by orthogonal evidence. EMBO Journal reviewers expect mechanistic conclusions to be supported by at least two independent experimental approaches. A genetic perturbation result must be corroborated by a pharmacological or biochemical approach, and vice versa. Papers that draw a mechanistic conclusion from a single experimental system without orthogonal validation are routinely sent back for "additional experiments required."

Scope is cell biology or biochemistry at the descriptive level. The EMBO Journal publishes mechanistic molecular and cell biology. Descriptive studies reporting where a protein is expressed, which conditions activate a pathway, or what the phenotype of a knockout is, without mechanistic insight into how the regulatory event occurs, are desk-rejected. The standard is understanding mechanism, not cataloguing observations.

A EMBO Journal submission readiness check evaluates manuscript scope, quantitative data standards, and mechanistic completeness against these desk-rejection patterns before you submit.