Impact Factor
4.94
Journal Citation Impact
Estimated influence, citation density, publishing volume, and citation integrity from the analytics table.
Citation rate
11.19
77,765 total citations
h5-index
227
h5 depth signal
Cited share
89.1%
6,721 of 7,541
Total citations
77,765
Citation footprint
Metric signal
10.10
External metric anchor
Self-citation
1.8%
1,372 self-citations
Citations Trend
Monthly Publications Cadence
Citing Geographic Demographics
United States
25,623
China
6,159
United Kingdom
4,632
Germany
4,109
France
2,582
Citing Fields of Research
Cell Biology
5,602
Genetics & Genomics
4,267
Neurosciences
3,246
Immunology
3,121
Bacteriology
2,796
Publishing Activity & Reach
Volume, recency, access pattern, and citing-community signals from the journal analytics record.
All-time article footprint
171,935
Articles tracked across the journal lifetime
Indexed publication set
7,541
6,721 cited publications
Last 12 months
4,892
407.7 publications/month
Open access share
98.9%
4,839 OA publications in the last year
Leading citing country
United States
25,623 citing publications
Leading citing field
Cell Biology
5,602 citing publications
Latest tracked publication
16 October 2026
10 recent records available
Coverage & Indexing History
v53n5,May 1965-
v1,1915-
Active Coverage
Active Coverage
Active Coverage
Research Focus & Classification
Indexed Subjects
Cell Biology
Neurosciences
Genetics & Genomics
Immunology
Bacteriology
Crop Science
Issuing & Sponsoring Bodies
Contributor
National Academy of Sciences (U.S.)
Contributor
National Research Council (U.S.)
Broad Categories
Science
Neurosciences
Bacteriology
Genetics & Genomics
Cell Biology
Cancer, Autophagy & Apoptosis
Nucleic Acids Chemistry
Cancer & Development
MeSH Descriptors
Science
Latest Publications
Recent article records with DOI-first linking and condensed abstracts.
01
DOI 10.1073/pnas.2630333123
Open DOI
Thermal imbalance drives avian performance and responses to climate warming
Thermal performance curves are widely used to predict ectothermic responses to climate warming but are less effective for predicting endotherm performance across environmental conditions because thermoregulation often decouples body temp...
02
DOI 10.1073/pnas.2627551123
Open DOI
Membrane contact activation of Piezo2 drives lysosome–mitochondrion Ca 2+ transfer and signaling in Trypanosoma cruzi
Calcium ion (Ca 2+ ) transfer from other organelles is central to mitochondrial metabolism and cell survival, yet how mechanical forces regulate interorganelle communication remains unclear. Here we report a lysosome-to-mitochondrion pat...
03
DOI 10.1073/pnas.2626990123
Open DOI
Nitrogen deposition does not alter the temperate forest soil carbon pool: A 14-y experiment on varied nitrogen fertilization
Soil carbon (C) pools in nitrogen-limited temperate forests are critical to the global C cycle, but there are no long-term experiments examining soil C, with various nitrogen (N) forms. Here, a 14-y experiment (100 kg N ha −1 y −1 ), wit...
04
DOI 10.1073/pnas.2626934123
Open DOI
Controlled functionalization of cellulose nanocrystals directs polymer-specific protein coronas and immune cell interactions
Polymer coatings are widely used to suppress nonspecific protein adsorption and modulate nanoparticle–cell interactions. However, the biological outcomes of polymer-functionalized nanoparticles remain difficult to predict in complex biol...
05
DOI 10.1073/pnas.2626241123
Open DOI
A “knob-in-hole” gate in the antibody C H 1 domain underlies subclass-independent IgA hinge cleavage by the commensal metallopeptidase IgAse
Human immunoglobulin (Ig) A (IgA) protects ≈400 m 2 of mucosae from microbes. Bacterial IgA-peptidases subvert this defense by cleaving the F ab –F c hinge of subclass IgA1 while sparing the hinge-divergent, colon-dominant IgA2 subclass....
06
DOI 10.1073/pnas.2621525123
Open DOI
Dynamic partitioning shapes the in vivo organization of the Escherichia coli RNA degradosome
The bacterial RNA degradosome is a central mediator of RNA turnover, yet how its components are organized and regulated in living cells remains unclear. Using live-cell single-molecule imaging, we quantified the spatial distribution and ...
07
DOI 10.1073/pnas.2621291123
Open DOI
A conserved Hox9–10 code underlies the early establishment of hind appendage progenitors in zebrafish and the Iberian ribbed newt
The acquisition of paired appendages was a key innovation in vertebrate evolution. Although HoxA/D paralog groups (PGs) 9–13 play central roles in patterning paired fins and limbs, the evolutionary origin of this paired appendage-pattern...
08
DOI 10.1073/pnas.2621286123
Open DOI
S -adenosyl-L-homocysteine triggers an adaptive response that extends lifespan through the YBT1 ABC transporter
S -adenosyl-L-methionine (SAM) is a fundamental methyl donor; however, the physiological role of its byproduct and competitive inhibitor, S -adenosyl-L-homocysteine (SAH), remains unclear. Here, we show that transient reactive oxygen spe...
09
DOI 10.1073/pnas.2620524123
Open DOI
Nuclear BbAtg8 interacts with BbMac1 as a transcriptional modulator to sustain nuclear copper homeostasis during conidial germination
Pathogenic fungi endure host impose copper starvation by tightly coordinating trace metal homeostasis. However, how pathogens synchronize endogenous metal recycling with exogenous copper uptake to promote infection remains enigmatic. Usi...
10
DOI 10.1073/pnas.2619615123
Open DOI
A muscle-enriched mitochondrial protein regulates postnatal heart growth through mitonuclear ubiquinone–PPAR signaling
Increased mitochondrial biogenesis and aerobic respiration in postnatal mammalian organs are essential for adaptation to extrauterine life, yet the functions of many tissue-enriched, developmentally regulated mitochondrial proteins remai...
Bibliographical & Catalog Notes
Vols. for <1999-> also called: PNAS.
Not to be confused with another publication with the same title covering Mar. 1863-Oct. 1894, issued in 3 pt.: pt. 1, 1877; pt. 2, 1884; pt. 3, 1895.
Vol. 13, no. 1, pt. 2, includes Index (v. 1-10, 1915-1924) to the Proceedings; List of other publications of the Academy from 1863-1926; and List of publications of the National Research Council from 1916-1925.
Issues for 1980-1984 in two parts with consecutive page numbering: Physical sciences and Biological sciences.
Some issues accompanied by supplements with distinctive titles.
Also issued online.
Microfilm. v. 1 (1915)-v.15 (1929) + index v. 1 (1915)-v.10 (1924) 7 microfilm reels : negative ; 35 mm.
Indexes: Vols. 1-10, 1915-24, in v. 13 (Includes list of academy publications, 1863-1926, and list of publications of the National Research Council, 1916-25); Author index: Vols. 1-50, 1914-63. 1 v.
v. 16 (1930)-Will not microfilm; 20040413
Vol. 84, no. 1 (JAN 1987)19890818 Notice not published Printed on acid-free paper