Is Protein and peptide letters SCI Indexed? Indexing Status & Metrics

Journal Citation Impact

Estimated influence, citation density, publishing volume, and citation integrity from the analytics table.

Impact Factor

3.38

Citation rate 2.64 451 total citations

h5-index 24 h5 depth signal

Cited share 68.7% 125 of 182

Total citations 451 Citation footprint

Metric signal 6.62 External metric anchor

Self-citation 2.4% 11 self-citations

Citations Trend

Monthly Publications Cadence

Citing Geographic Demographics

China 376

India 234

United States 103

Brazil 83

Iran 75

Citing Fields of Research

Protein Structure & Folding 214

Bacteriology 139

Industrial Microbiology 119

Cell Biology 114

Surfactants, Lipid Bilayers & Antimicrobial Peptides 100

Publishing Activity & Reach

Volume, recency, access pattern, and citing-community signals from the journal analytics record.

All-time article footprint 3,842 Articles tracked across the journal lifetime

Indexed publication set 182 125 cited publications

Last 12 months 53 13.3 publications/month

Open access share 18.9% 10 OA publications in the last year

Leading citing country China 376 citing publications

Leading citing field Protein Structure & Folding 214 citing publications

Latest tracked publication 1 October 2026 10 recent records available

Coverage & Indexing History

MEDLINE

v9n1, Feb. 2002-

PubMed

v9n1, Feb. 2002-

Index medicus

Active Coverage

Research Focus & Classification

Indexed Subjects

Surfactants, Lipid Bilayers & Antimicrobial Peptides Neurodegenerative Disorders Immunology Oncology Food Science & Technology Bacteriology Protein Structure & Folding

Broad Categories

Biochemistry Noncoding RNA Surfactants, Lipid Bilayers & Antimicrobial Peptides Cancer, Autophagy & Apoptosis DNA Damage Immunotherapy Neurodegenerative Disorders

MeSH Descriptors

Peptides Proteins

Latest Publications

Recent article records with DOI-first linking and condensed abstracts.

01 1 October 2026

DOI 10.1016/j.ppl.2026.10.001

Optimized Deep Knowledge Distillation Framework for Large-Scale Virus–Host Protein Interaction Prediction

Open DOI

Farzad Zandi, Parvaneh Mansouri

02 1 October 2026

DOI 10.2174/0109298665404512251021101809

Holographic Proteomics: A Review of Digital Holographic Microscopy Applications in Spatial Proteomics

Open DOI

Feng Zhu, Qingwen Wang, Xuejia Zheng et al.

Holoproteomics is a state-of-the-art advancement in spatial proteomics, enabling comprehensive spatial analysis of proteins in tissue microenvironments by combining Digital Holographic Microscopy (DHM) imaging and high-precision laser ca...

03 1 October 2026

DOI 10.2174/0109298665334965251007043325

Aloperine Protects Against Cisplatin-Induced Injury in Kidney Cells Via Modulating PI3K/AKT/Nfκb-Mediated NLRP3 Inflammasome

Open DOI

Mingning Qiu, Shuai Zhang, Jinglan Liang et al.

Background: Aloperine (ALO) is a vital alkaloid present in the traditional Chinese herb Sophora alopecuroides, which has demonstrated effective anti-inflammatory activity. However, the effects and the mechanism of action of ALO on cispla...

04 1 October 2026

DOI 10.2174/0109298665411024251015093155

Evaluation of the Anti-Liver Cancer Activity of Protein Fractions Isolated from Adenium obesum Leaf Extract

Open DOI

Ashkan Hajinourmohammadi, Jamil Zargan, Hanieh Jafary et al.

Introduction: Liver cancer is the third leading cause of cancer-related death. Plantderived therapeutics have played a significant role in preventing and treating many diseases, including cancers. The present study investigated the antic...

05 1 October 2026

DOI 10.2174/0109298665400400251003013958

Role of TPD52 in Endometrial Cancer: Impact on EMT and the PI3K/AKT and ERK/MAPK Signaling

Open DOI

Lu Miao, Buze Chen, Linlin Li et al.

Introduction: Endometrial carcinoma (EC) incidence and mortality continue to rise, and reliable therapeutic targets remain scarce. We aimed to define the oncogenic role and mechanism of tumor protein D52 (TPD52) in EC, focusing on epithe...

06 1 October 2026

DOI 10.2174/0109298665413796251002111415

Shepherin II Gene Synthesis and Peptide Characterization: E. coli Expression, Purification, and Antiviral Activity

Open DOI

Azza Abd Elfattah, Safia Samir, Hend Okasha et al.

Introduction: The shepherin II peptide is characterized by a histidine/glycine-rich sequence. This study aimed to design, express recombinantly, and evaluate the antiviral activity of shepherin II against hepatitis A virus (HAV). Methods...

07 1 October 2026

DOI 10.2174/0109298665394172250926073117

Improving Acid-Base Pair Concentration in Wash/Elution Buffer Eliminates Elution Peak-Shouldering in Cation Exchange Chromatography

Open DOI

Fei Huang, Na Liu

Introduction: Peak-shouldering elution behavior was a common and unexpected result in bind-and-elute mode Cation Exchange Chromatography (CEX), which may be due to the pH transition during the elution step and the aggregation tendency of...

08 1 September 2026

DOI 10.1016/j.ppl.2026.09.002