Scientific illustration of a semi-transparent protein with four labeled Polaroid schematics: S-S bridge, Helix breaker, Non-cov. bonding, Foldon domain.

cientific graphical abstract illustrating the stabilization of a viral membrane fusion protein in its prefusion conformation. The central focus is a semi-transparent trimeric protein structure rendered in soft gray and white tones with visible cartoon helices and strands. The protein is surrounded by four Polaroid-style sketch frames connected to it with brown ropes and metal anchors. Each rope points to red-circled regions on the protein surface, representing stabilization points. The Polaroid frames are taped to the background with rough paper texture and hand-drawn black outlines. Each frame contains a small cartoon-like molecular schematic labeled in handwritten English text: “S–S bridge” (showing a disulfide bond between two cysteines) “Helix breaker” (a hand breaking a helix) “Non-cov. bonding” (a close-up of hydrogen bond or electrostatic interaction) “Foldon domain” (a trimeric coiled-coil domain structure). The background is light beige or off-white with a clean scientific hand-drawn aesthetic. Style: semi-realistic scientific illustration, line-art sketch mixed with digital color, soft shadows, academic figure design, Nature / Cell journal graphical abstract style. Color palette: neutral beige, gray-blue, brown ropes, red highlights. 300 DPI, high-resolution, horizontal layout (16:9). See more