“CONFORMATIONAL POLYMORPHISM Cryo-EM structures of amyloid fibrils” is a Custom-1 text effect created with FontVibe AI.

Create a finished portrait scientific editorial cover: an authoritative, meticulously composed image of conformational polymorphism in amyloid fibrils, not a presentation slide. Use a continuous midnight slate-blue background, deep and matte, without a visible horizon or backdrop texture. Three independent fibrils occupy the upper field, clearly separated by uninterrupted dark channels. The left fibril sits within a narrow column inset from the left edge, beginning below the top margin and descending toward the lower edge of the image field. The middle fibril occupies a similarly narrow central column, reaches highest, and is longest. The right fibril occupies its own narrow column near the right edge, starts lower, and ends slightly higher than the others. Together they fill the upper portion without touching the typography. Preserve generous darkness around their tips and a clear horizontal breathing space above the title. Each rises along a different shallow diagonal and sits at a slightly different depth; all remain individually readable. Show conceptual protein architectures rather than a claimed experimental structure. Give the left fibril a compact paired-protofilament arrangement with a relatively tight helical pitch; the central fibril a broader, open-grooved paired arrangement with a slower twist; the right fibril a narrower asymmetric arrangement with an intermediate twist. Build every surface from closely repeated stacked protein subunits, producing fine transverse ridges perpendicular to the local fibril axis. These are solid protein assemblies, never braided rope, smooth tubing or DNA ladders. Maintain visibly different cross-sectional organization as each twists. One broad silver-blue light grazes all three from the upper left. Illuminate ridge crests in glacial silver, retain steel-blue detail in recessed grooves, and let opposite faces fall into deep shadow. Matte material, soft highlight rolloff, precise structural relief, no metallic shine. No glowing outlines, particles, arrows, branches, connecting structures or transformation sequence. Across the lower field, set the exact headline "CONFORMATIONAL POLYMORPHISM" on two left-aligned lines, breaking only between the words. Align its left edge with the inset supporting line, and let the title block extend nearly across the usable cover width. Keep both lines within a compact lower title band, with deliberate leading and generous outer margins. Design wide-proportion classical English display-serif capitals: elegant bracketed serifs, Roman proportions, open counters, substantial vertical strokes and refined hairlines. Preserve generous letter widths by sizing the text to fit, not by compressing it. Use matte chalk-colored lettering; broad verticals softly receive the key light while hairlines remain quietly legible in ambient reflection. Restrained surface depth, no bevels or decorative effects. Near the bottom, beneath a clear gap, set "Cryo-EM structures of amyloid fibrils" as one small, crisp chalk-colored line with restrained spacing, aligned to the headline's left edge. Render only these supplied words. No masthead, badges, issue information, labels or additional text.