Evidence map›Paper›PMID 31164468›Full record

ArticlemBio2019

Evolution of Superinfection Immunity in Cluster A Mycobacteriophages.

Travis N Mavrich, Graham F Hatfull

Open access · goldAbstract read
In one paragraph

Article in mBio, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed
7.1field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

54 citing papers in PubMed, 79 citations in OpenAlex.

  1. Review
  2. Article
  3. A novel temperate phage fromMicrobiology spectrum · 2026
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  14. Genome synthesis, assembly, and rebooting of therapeutically useful high G+C% mycobacteriophages.Proceedings of the National Academy of Sciences of the United States of America · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

Travis N MavrichDepartment of Biological Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
Graham F HatfullDepartment of Biological Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania, USA gfh@pitt.edu.ORCID 0000-0002-6705-6821
University of Pittsburgh · US

Funding

Bacteriophage diversity, dynamics, function, and exploitationR35GM131729 · NIGMS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI Graham F. Hatfull · 2019 to 2026
$3.6M
Dynamics of viral host range evolutionR01GM116884 · NIGMS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI HATFULL, GRAHAM F. · 2015 to 2019
$2.0M
NIGMS NIH HHS R01 GM116884NIGMS NIH HHS R35 GM131729
6 · The paper itself

Abstract

Temperate phages encode an immunity system to control lytic gene expression during lysogeny. This gene regulatory circuit consists of multiple interacting genetic elements, and although it is essential for controlling phage growth, it is subject to conflicting evolutionary pressures. During superinfection of a lysogen, the prophage's circuit interacts with the superinfecting phage's circuit and prevents lytic growth if the two circuits are closely related. The circuitry is advantageous since it provides the prophage with a defense mechanism, but the circuitry is also disadvantageous since it limits the phage's host range during superinfection. Evolutionarily related phages have divergent, orthogonal immunity systems that no longer interact and are heteroimmune, but we do not understand how immunity systems evolve new specificities. Here, we use a group of Cluster A mycobacteriophages that exhibit a spectrum of genetic diversity to examine how immunity system evolution impacts superinfection immunity. We show that phages with mesotypic (i.e., genetically related but distinct) immunity systems exhibit asymmetric and incomplete superinfection phenotypes. They form complex immunity networks instead of well-defined immunity groups, and mutations conferring escape (i.e., virulence) from homotypic or mesotypic immunity have various escape specificities. Thus, virulence and the evolution of new immune specificities are shaped by interactions with homotypic and mesotypic immunity systems.

Indexed as

Evolution, MolecularGenome, ViralMycobacteriophagesPhylogenyProphagesSuperinfectionVirulencebacteriophage evolutionbacteriophage geneticsbacteriophages

Identifiers

PMID31164468
PMCPMC6550527
OpenAlexW2948481420

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.