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Ligand promiscuity in hemoglobin scavenging

May 14, 2026

Ligand promiscuity in hemoglobin scavenging

The scavenger receptor CD163 detoxifies hemoglobin after erythrocyte lysis via haptoglobin–hemoglobin uptake, but can also bind free haemoglobin directly to prevent oxidative damage. Richard Zhou and Matthew Higgins solve the CD163 structure in complex with hemoglobin to reveal that CD163 arms flexibility allows receptor promiscuity when haptoglobin is absent.

Image credit: pbio.3003788

PLOS Biologue

Community blog for PLOS Biology, PLOS Genetics and PLOS Computational Biology.

PLOS BIOLOGUE

05/14/2026

Research Article

How neurons' properties influence their encoding performance

How do cellular properties influence information coding among cortical populations? Omer Revah, Fred Wolf, Michael Gutnick and Andreas Neef show that cell number, cell size, the correlation time of the background noise and the neurophysiological properties determine how accurately inputs are encoded in barrel cortex excitatory neurons.

Image credit: pbio.3003789

How neurons' properties influence their encoding performance

Recently Published Articles

Current Issue

Current Issue April 2026

05/13/2026

Research Article

Acoustic delivery of tumor photothermal therapy

Photothermal therapy is a rapidly evolving cancer treatment modality, but further clinical applications are hindered by the short in vivo half-life of photothermal agents. Jiaqi Zhang, Licong Huang, Shuhui Wang and co-workers use biosynthetic gas vesicles coated with the FDA-approved photothermal agent Indocyanine green to enhance its acoustic delivery and anti-tumor efficacy.

Image credit: pbio.3003786

Acoustic delivery of tumor photothermal therapy

05/13/2026

Short Reports

Premotor cortex tracks perceptual aspects of decision making

How do frontal brain regions guide decision-making in the context of perceptual and non-perceptual factors? This study in ferrets, by Jeff Boucher, Shihab Shamma and Yves Boubenec, reveals through functional ultrasound imaging that activity in the brain's premotor cortex tracks the perceived stimulus, not the one reported by behavior.

Image credit: Elmina Lebeurier & Jeffrey Boucher

Premotor cortex tracks perceptual aspects of decision making

05/11/2026

Research Article

USP39 coordinates RIG-I and STING pathways

RIG-I and STING drive antiviral defense, but how their pathways are coordinated remains unclear. Jiazheng Quan, Xibao Zhao, Weilin Chen and colleagues show that USP39 enhances antiviral immunity by promoting RIG-I mRNA maturation and stabilizing STING via deubiquitination, revealing a target to boost antiviral responses.

USP39 coordinates RIG-I and STING pathways

Image credit: pbio.3003796

05/07/2026

Research Article

Structured water in the GPR174 receptor

The GPR174 receptor modulates immune homeostasis by engaging distinct G protein pathways, but how hydration-mediated interactions influence its activation remain unclear. Ying-Jun Dong, Kun Xi, Ya-Zhi Zhang, Jian-Heng Xue, Dan-Dan Shen, and co-workers show that these networks stabilize the active-state conformation of GPR174 and reshape its intracellular cavity by enabling selectivity.

Structured water in the GPR174 receptor

Image credit: pbio.3003447

05/05/2026

Research Article

Shaping Pavlovian biases

Pavlovian approach–avoidance tendencies can disrupt flexible action control, but the causal contributions of specific neural regions remain unclear. Nomiki Koutsoumpari, Johannes Algermissen, Nadege Bault, Elsa Fouragnan and co-authors find that anterior insula stimulation reduces learning bias, while dorsal ACC stimulation increases perseveration bias, revealing distinct mechanisms through which these regions shape Pavlovian biases.

Shaping Pavlovian biases

Image credit: Nomiki Koutsoumpari

05/14/2026

Perspective

Redefining successful aging

Modern medicine has transformed how long we live, with more people surviving to old age with chronic disease. This Perspective examines how aging, health and care should be redefined to reflect these increasingly complex later lives.

Redefining successful aging

Image credit: pbio.3003784

05/11/2026

Essay

Sex and the aging immune system

Aging has effects that reshape the immune system in unique, sex-specific ways, but these differences are rarely taken into consideration. This Essay argues that accounting for both sex and age is essential to advance personalized medicine.

Sex and the aging immune system

Image credit: pbio.3003763

04/22/2026

Community Page

CiliaKB: a knowledge base for cilia-associated genes

Cilia dysfunction is implicated in a range of disorders. This Community Page presents CiliaKB, a knowledge base that serves as a one-stop platform for researchers to rapidly access mechanistic data and mine for translational clues about cilia.

CiliaKB: a knowledge base for cilia-associated genes

Image credit: Donghui Zhang

04/21/2026

Essay

The selfish ribosome

In this Essay, the evolution of life is construed as a ribosomal takeover, whereby the ribosome evolved to consume most of the cell’s resources, while other cellular componentry ensured the propagation of the ribosome, the ultimate biological selfish element.

The selfish ribosome

Image credit: pbio.3003780

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