Target intelligence / Profile preview

Human cytomegalovirus Pentameric complex (HCMV Pentamer)

Target
HCMV Pentamer
Molecular classification
Viral entry/fusion complex, Viral envelope glycoprotein complex, Other (herpesvirus envelope complex)
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Overview

The HCMV Pentameric complex is a critical glycoprotein assembly on the surface of the human cytomegalovirus (HCMV) envelope. It comprises five subunits: glycoprotein H (gH), glycoprotein L (gL), and three viral proteins: UL128, UL130, and UL131A. This complex is essential for efficient infection of epithelial, endothelial, and myeloid lineage cells. The Pentameric complex binds host cell surface receptors—most notably neuropilin-2 (NRP2) and thrombomodulin (THBD)—to mediate viral attachment and entry. These interactions drive HCMV’s broad cellular tropism and are considered central for transmission and pathogenicity. Monoclonal antibodies targeting conformational epitopes on the Pentamer can effectively neutralize viral infectivity in susceptible cells, highlighting this complex as an important candidate for vaccine and therapeutic antibody development[1][4].

Other names
HCMV PentamerHCMV gH/gL/UL128-131A complexgH/gL/UL128/UL130/UL131A complex
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Mechanism of action

Mechanisms involve neutralization by monoclonal antibodies preventing receptor binding and subsequent cell entry

03

Biological functions

Viral entry into epithelial and endothelial cellsHost cell receptor recognitionMediation of cell tropism
04

Disease associations

Infection (Human cytomegalovirus infection)
05

Safety considerations

viral escape mutantsimmunogenicity (for biologics)off-target immune reactions (in multi-target approaches)
06

Interacting drugs

Antiviral neutralizing antibodies (such as 13H11, 8I21)

1 more in the full profile.

07

Biomarkers

Presence of neutralizing anti-pentamer antibodies may correlate with protection from HCMV infection or efficacy of experimental vaccines

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