Olav Larsen (Avtor), Wijnand J. C. van der Velden (Avtor), Maša Mavri (Avtor), Sara Schuermans (Avtor), Pia C. Rummel (Avtor), Stefanie Karlshøj (Avtor), Martin Gustavsson (Avtor), Paul Proost (Avtor), Jon Våbenø (Avtor), Mette Marie Rosenklide (Avtor)

Povzetek

Extensive ligand-receptor promiscuity in the chemokine signaling system balances beneficial redundancy and specificity. However, this feature poses a major challenge to selectively modulate the system pharmacologically. Here, we identified a conserved cluster of three aromatic receptor residues that anchors the second extracellular loop (ECL2) to the top of receptor transmembrane helices (TM) 4 and 5 and enables recognition of both shared and specific characteristics of interacting chemokines. This cluster was essential for the activation of several chemokine receptors. Furthermore, characteristic motifs of the ß$_1$ strand and 30s loop make the two main CC-chemokine subgroups—the macrophage inflammatory proteins (MIPs) and monocyte chemoattractant proteins (MCPs)—differentially dependent on this cluster in the promiscuous receptors CCR1, CCR2, and CCR5. The cluster additionally enabled CCR1 and CCR5 to discriminate between closely related MIPs based on the N terminus of the chemokine. G protein signaling and β-arrestin2 recruitment assays confirmed the importance of the conserved cluster in receptor discrimination of chemokine ligands. This extracellular site may facilitate the development of chemokine-related therapeutics.

Ključne besede

GTP-binding proteins;monocyte chemoattractant proteins;macrophage inflammatory proteins;receptors;chemokine;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL VF - Veterinarska fakulteta
UDK: 577
COBISS: 110570499 Povezava se bo odprla v novem oknu
ISSN: 1937-9145
Št. ogledov: 131
Št. prenosov: 75
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarne ključne besede: GTP-Binding Proteins;Monocyte Chemoattractant Proteins;Macrophage Inflammatory Proteins;Receptors, Chemokine;
Vrsta dela (COBISS): Članek v reviji
Strani: art. 7042, str. 1-13
Letnik: ǂVol. ǂ15
Zvezek: ǂno. ǂ724
Čas izdaje: 2022
DOI: 10.1126/scisignal.abg7042
ID: 15574436