Impact Factor
3.08
Journal Citation Impact
Estimated influence, citation density, publishing volume, and citation integrity from the analytics table.
Citation rate
1.87
473 total citations
h5-index
23
h5 depth signal
Cited share
66.7%
174 of 261
Total citations
473
Citation footprint
Metric signal
1.85
External metric anchor
Self-citation
3.6%
17 self-citations
Citations Trend
Monthly Publications Cadence
Citing Geographic Demographics
China
591
United States
252
India
111
Japan
101
Iran
71
Citing Fields of Research
Industrial Microbiology
486
Bacteriology
473
Cell Biology
346
Protein Structure & Folding
231
Immunotherapy
226
Publishing Activity & Reach
Volume, recency, access pattern, and citing-community signals from the journal analytics record.
All-time article footprint
6,676
Articles tracked across the journal lifetime
Indexed publication set
261
174 cited publications
Last 12 months
147
12.3 publications/month
Open access share
16.3%
24 OA publications in the last year
Leading citing country
China
591 citing publications
Leading citing field
Industrial Microbiology
486 citing publications
Latest tracked publication
17 October 2026
10 recent records available
Coverage & Indexing History
v1n1,Sept. 1990-
v1n1,Sept. 1990-
Active Coverage
Research Focus & Classification
Indexed Subjects
Industrial Microbiology
Bacteriology
Separation Techniques
Cell Biology
Immunotherapy
Protein Structure & Folding
Broad Categories
Molecular Biology
Separation Techniques
Immunotherapy
Industrial Microbiology
Paper & Wood Materials Science
Bacteriology
MeSH Descriptors
Gene Expression Regulation
Proteins
Proteins
Latest Publications
Recent article records with DOI-first linking and condensed abstracts.
01
DOI 10.1016/j.pep.2026.107028
Open DOI
Biochemical characterization of recombinant L-threonine 3-dehydrogenase from Akkermansia muciniphila
02
03
DOI 10.1016/j.pep.2026.107026
Open DOI
Effect of upstream sequence modifications in pET vectors on the yield of recombinant proteins
04
05
DOI 10.1016/j.pep.2026.107021
Open DOI
A bifunctional protein G-streptavidin fusion protein for antibody detection and circulating tumor cell enrichment
06
DOI 10.1016/j.pep.2026.107023
Open DOI
Over-expression, purification, and characterisation of Mycobacterium tuberculosis MPT64 from inclusion bodies
07
08
09
DOI 10.1016/j.pep.2026.107022
Open DOI
N-glycosylation is essential for the expression of recombinant human interleukin-40 in Komagataella phaffii
10
DOI 10.1016/j.pep.2026.107020
Open DOI
A benchmark fed-batch bioprocess for production of cNISTmAb using NISTCHO
Bibliographical & Catalog Notes
Issues for <Oct. 2002-> have title: Protein expression & purification.
Title from cover.
Place of publication varies.
Also issued online.
Vol. 1, no. 1 (SEP 1990)19920709 Notice published Printed on acid-free paper that meets the full ANSI standard for Permanent Paper