What is the Int. J. Biol. Macromol. JIF?

The JIF is 8.5 (2024 JCR). See the full year-by-year trend and category ranking in our International Journal of Biological Macromolecules JIF analysis.

What is the acceptance rate of International Journal of Biological Macromolecules?

Manusights currently treats ~45-55% as an estimate for International Journal of Biological Macromolecules, not an official journal-published rate. One common reason papers fail is characterizing macromolecule structure without functional validation.

How long does Int. J. Biol. Macromol. take to review?

International Journal of Biological Macromolecules typically takes ~90-120 days median, but timing varies by editor, field, and reviewer availability. Expect an editorial screen first, then manuscript preparation, then peer review.

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Journal Guide

Publishing in International Journal of Biological Macromolecules: Fit, Timeline & Submission Guide

Q: Is International Journal of Biological Macromolecules a good journal?

International Journal of Biological Macromolecules is a strong target if present engineered proteins, modified polymers, or natural macromolecules with clear functionality. It is a weaker fit if detailed structural characterization alone is insufficient.

Q: Is International Journal of Biological Macromolecules peer reviewed?

Yes, International Journal of Biological Macromolecules is fully peer reviewed. All submissions undergo rigorous peer review by 2-3 macromolecule experts assess structure-function understanding, bioactivity data quality, and therapeutic relevance. Reviewers evaluate mechanistic claims carefully. First decision 90-120 days..

Protein and polymer engineering: structure, function, and biomedical applications

Should you submit here?

Submit if present engineered proteins, modified polymers, or natural macromolecules with clear functionality. Be careful if detailed structural characterization alone is insufficient.

IF 8.5 · ~45-55% accepted · ~90-120 days median

Best fit if

Present engineered proteins, modified polymers, or natural macromolecules with clear functionality

Not ideal if

Detailed structural characterization alone is insufficient

Also compare

Moleculesand Bioinformatics

8.5

Impact Factor (2024)

~45-55%

Acceptance Rate

~90-120 days median

Time to First Decision

Submission guide

International Journal of Biological Macromolecules Submission Guide

A practical IJBM submission guide for authors deciding whether the paper is complete, biologically relevant, and editorially credible enough before submission.

Journal assessment

Is International Journal of Biological Macromolecules a Good Journal? The Elsevier Biopolymer Workhorse

IJBM (IF 8.5) is Elsevier's main venue for biopolymer research, proteins, polysaccharides, nucleic acids. Here's when your paper fits, what editors want, and how it compares to Carbohydrate Polymers and Biomacromolecules.

Desk rejection

How to Avoid Desk Rejection at International Journal of Biological Macromolecules

How to avoid desk rejection at IJBM: characterization depth, biological relevance, and structure-function novelty.

What Int. J. Biol. Macromol. Publishes

International Journal of Biological Macromolecules published by Elsevier covers protein science, polysaccharides, and polymers with biological applications. With JIF 8.5 and Q1 ranking in Biochemistry & Molecular Biology, IJBM emphasizes characterization of natural and engineered macromolecules with functional applications. The journal publishes research on protein structure-function, macromolecule interactions, biomedical polymers, and therapeutic applications. Critically: IJBM values macromolecules with demonstrated biological function or clear application potential. Pure structural characterization without functional context is less competitive. The journal seeks papers showing how macromolecular engineering enables therapeutic or diagnostic solutions.

Protein structure and function: folding, domains, enzymatic activity
Protein-protein interactions: binding mechanisms, complex formation
Polysaccharides: structure, bioactivity, modification, therapeutic use
Biomedical polymers: synthetic polymers, natural polymer modification, scaffolds
Fibrillation and aggregation: amyloid formation, prevention, characterization
Protein engineering: directed evolution, mutation effects, optimization
Macromolecular complexes: viral particles, enzyme complexes, structural assemblies
Therapeutic macromolecules: antibodies, peptides, protein drugs

Editor Insight

“International Journal of Biological Macromolecules publishes macromolecules with demonstrated functional or therapeutic value. We seek papers combining structural characterization with bioactivity, mechanism, and application focus. Pure structural biology without functional context is less competitive.”

What Int. J. Biol. Macromol. Editors Look For

Novel macromolecule with demonstrated biological function or therapeutic potential

Present engineered proteins, modified polymers, or natural macromolecules with clear functionality. Show bioactivity, therapeutic efficacy, or diagnostic value. Purely structural characterization without functional demonstration is less competitive.

Complete structure-function relationship characterization

Rigorously characterize macromolecule structure: X-ray crystallography, cryo-EM, NMR for proteins; spectroscopy and mass spectrometry for polymers. Show how structure enables function. Incomplete characterization reduces impact.

Mechanistic understanding of biological activity or therapeutic action

Explain how your macromolecule works at molecular level. What's the mechanism of enzyme activity or therapeutic action? How does structure drive function? Mechanistic insight strengthens papers significantly.

Biomedical application demonstration with appropriate models

For therapeutic macromolecules, demonstrate activity in cellular or animal models. Show dose-response, specificity, and therapeutic window. Clinical relevance or translational path increases impact.

Stability and manufacturability for therapeutic applications

Therapeutic macromolecules must be stable and manufacturable. Address storage stability, formulation, scalability, and cost. Unstable or impractical molecules have limited real-world impact.

Why Papers Get Rejected

These patterns appear repeatedly in manuscripts that don't make it past Int. J. Biol. Macromol.'s editorial review:

Characterizing macromolecule structure without functional validation

Detailed structural characterization alone is insufficient. IJBM expects functional relevance. Show bioactivity, enzyme activity, or therapeutic effect. Why should readers care about this structure?

Limited or inappropriate bioactivity testing

Generic cell proliferation assays without specificity testing or mechanistic validation are weak. Use appropriate models (target cells, relevant assays). Include positive and negative controls.

Protein engineering without demonstrating improved function

Showing that mutations can be made is insufficient. Demonstrate improved properties (higher activity, better specificity, enhanced stability). Mutations should yield functional improvement.

Ignoring structural basis for observed bioactivity

Papers showing activity without structural explanation of mechanism are less impactful. Connect observed function to atomic-level structure. Why does this sequence or modification enhance activity?

Overlooking aggregation, stability, or manufacturability issues

Therapeutic proteins often suffer aggregation or instability. Address potential issues explicitly. Show stability data, formulation development, manufacturability analysis.

Does your manuscript avoid these patterns?

The Free Readiness Scan reads your full manuscript against Int. J. Biol. Macromol.'s criteria and flags the specific issues most likely to cause rejection.

Run Free Readiness Scan →

Insider Tips from Int. J. Biol. Macromol. Authors

Protein therapeutic engineering (antibodies, enzymes) has highest impact

Research on therapeutic proteins, antibody engineering, or engineered enzymes receives strong reception. Clear therapeutic potential significantly increases impact.

Cryo-EM structures revealing mechanisms are highly valued

High-resolution cryo-EM structures showing conformational changes or protein-protein interactions provide exceptional mechanistic insight. Modern cryo-EM structures are scientifically prominent.

Directed evolution and protein engineering screening

Papers demonstrating improved protein properties through directed evolution or rational engineering with selection/screening approaches are impactful and trendy.

Natural product derived macromolecules and bioactive polymers competitive

Bioactive polysaccharides, peptides, or modified natural polymers with therapeutic potential receive strong interest, especially for antimicrobial or anti-inflammatory applications.

Single-molecule studies revealing macromolecular behavior

Single-molecule fluorescence or force spectroscopy revealing conformational changes, kinetics, or interactions provide unique mechanistic insight.

The Int. J. Biol. Macromol. Submission Process

Manuscript preparation

Prep

6,000-9,000 words with 6-8 figures. Include macromolecule characterization (structure, spectroscopy), bioactivity testing with appropriate controls, mechanism studies, and therapeutic/functional relevance. Supporting: structural data, bioactivity curves, stability studies.

Submission via Elsevier system

Day 0

Submit at https://www.editorialmanager.com/IJBM/. Required: manuscript, figures emphasizing structure and bioactivity, cover letter highlighting functional/therapeutic significance.

Editorial assessment

1-2 weeks

Editor assesses macromolecule novelty, functional significance, and characterization completeness. Papers lacking bioactivity or therapeutic context face lower priority. Moderate desk rejection ~25-35%.

Peer review

90-120 days

2-3 macromolecule experts assess structure-function understanding, bioactivity data quality, and therapeutic relevance. Reviewers evaluate mechanistic claims carefully. First decision 90-120 days.

Revision and publication

Revision: 4-8 weeks

Revisions often request additional functional validation, mechanism clarification, or stability data. Publication 2-4 weeks after acceptance.

Int. J. Biol. Macromol. by the Numbers

2024 Impact Factor	8.2
5-Year Impact Factor	8.6
Acceptance rate	~45-55%
Desk rejection rate	~25-35%
Median first decision	~105 days
Open access option	$2,900 USD
Publisher	Elsevier
Founded	1983

Before you submit

Int. J. Biol. Macromol. accepts a small fraction of submissions. Make your attempt count.

Start with the Free Readiness Scan. Unlock the Full AI Diagnostic for $29. If you need deeper scientific feedback, choose Expert Review. The full report is calibrated to Int. J. Biol. Macromol..

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Article Types

Research Article

6,000-9,000 words

Macromolecule characterization with bioactivity/function

Short Communication

3,000-4,500 words

Focused macromolecule discovery with rapid publication

Review

9,000-12,000 words

Comprehensive macromolecule topic review

Landmark Int. J. Biol. Macromol. Papers

Papers that defined fields and changed science:

Protein folding thermodynamics (Anfinsen, 1960s) - showed proteins fold to lowest energy
Antibody engineering (1980s-1990s) - enabled monoclonal antibody therapeutics
Directed evolution (Arnold, 1993+) - won Nobel Prize for protein engineering
Therapeutic proteins/biologics boom (2000s-present) - proteins became major drug class
Cryo-EM revolution (Henderson, Frank, 2010s) - enabled atomic-resolution protein structures

Preparing a Int. J. Biol. Macromol. Submission?

Get pre-submission feedback from reviewers who've published in Int. J. Biol. Macromol. and know exactly what editors look for.

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NDA-protected

Confidential

Primary Fields

Protein EngineeringTherapeutic ProteinsPolysaccharide ScienceBiomedical PolymersProtein StructureEnzyme Engineering

More Guides for This Journal

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Reference library

Compare Int. J. Biol. Macromol. with the broader publishing context

This journal guide is the best starting point for Int. J. Biol. Macromol.. The reference library covers the surrounding questions authors usually ask next: whether the package is ready, what drives desk rejection, how neighboring journals compare, and what the submission constraints look like across the field.

Open the reference library →

Checklist system / operational asset

Elite Submission Checklist

A flagship pre-submission checklist that turns journal-fit, desk-reject, and package-quality lessons into one operational final-pass audit.

Flagship report / decision support

Desk Rejection Report

A canonical desk-rejection report that organizes the most common editorial failure modes, what they look like, and how to prevent them.

Dataset / reference hub

Journal Intelligence Dataset

A canonical journal dataset that combines selectivity posture, review timing, submission requirements, and Manusights fit signals in one citeable reference asset.

Dataset / reference guide

Peer Review Timelines by Journal

Reference-grade journal timeline data that authors, labs, and writing centers can cite when discussing realistic review timing.