Bioinformatic pipeline for functional inference of Rickettsia akari hypothetical proteins reveals virulence-associated and effector candidates

A benchmarked in silico pipeline functionally prioritized 54 Rickettsia akari hypothetical proteins, highlighting A8GP20 as an effector candidate with elevated sequence divergence.

• Why it matters: Many Rickettsia akari hypothetical proteins are expressed during host-cell infection, but their functions and links to virulence are unclear, limiting targeted experimental follow-up.
• What they did: The authors integrated predictions of physicochemical traits, subcellular localization, secretion signals, folds, interaction partners, and evolutionary conservation, then used network/structural analyses plus docking and normal mode modeling.
• The result: Most proteins were predicted thermostable, with cytoplasmic (37.00%) or membrane-associated (29.63%) localization; features tied to type IV secretion were more frequent, and purifying selection predominated.

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