Peptide SchedulePeptide Molecular Icons
Every icon is generated from the peptide's real amino acid sequence. Each bubble represents one amino acid — sized by its molecular weight, colored by its chemical class. No two peptides look alike.
How the Icons Encode Real Molecular Data
Bubble = Amino Acid
Each circle in the icon represents one amino acid residue in the peptide's primary sequence. A 15-residue peptide like BPC-157 has exactly 15 bubbles. A tripeptide like KPV has 3.
Size = Molecular Weight
The radius of each bubble is proportional to the amino acid's molecular weight. Tryptophan (204 Da) produces the largest bubbles. Glycine (75 Da) produces the smallest. Heavier amino acids pack near the center.
Color = Chemical Class
Five amino acid types, five colors: hydrophobic (nonpolar side chains), polar (uncharged), positively charged, negatively charged, and special (Glycine, Cysteine). Each category uses a curated theme palette.
Browse & Download Peptide Icons
Category Color Themes
Each peptide category uses a dedicated color theme that maps the five amino acid types to category-appropriate colors. This makes it possible to identify a peptide's category at a glance.
Weight Loss
Ember theme — Warm oranges and reds — metabolic fire
Growth Hormone
Midnight theme — Deep blues and purples — power and depth
Healing & Recovery
Jade theme — Rich greens — natural regeneration
Anti-Aging
Gold theme — Golds and ambers — timeless vitality
Metabolic
Sunset theme — Warm sunset tones — energy and warmth
Sexual Health
Cyberpunk theme — Bold magentas and cyans — electric energy
Immune
Ocean theme — Clean blues — protection and clarity
Cognitive
Aurora theme — Cool teals — focus and neural flow
Sleep
Retrowave theme — Deep purples — nighttime and rest
Amino Acid Classification
The 20 standard amino acids are grouped into five biochemical classes. Each class receives a distinct color in every theme, making the peptide's chemical composition visible at a glance.
| Class | Amino Acids | Properties |
|---|---|---|
| Hydrophobic | Ala (A), Ile (I), Leu (L), Met (M), Phe (F), Trp (W), Val (V), Pro (P) | Nonpolar side chains — tend to cluster in the protein interior |
| Polar | Ser (S), Thr (T), Asn (N), Gln (Q), Tyr (Y) | Uncharged but polar — form hydrogen bonds with water |
| Positive Charge | Arg (R), Lys (K), His (H) | Positively charged at physiological pH — often on protein surfaces |
| Negative Charge | Asp (D), Glu (E) | Negatively charged at physiological pH — involved in salt bridges |
| Special | Gly (G), Cys (C) | Glycine enables tight turns; Cysteine forms disulfide bonds |
Frequently Asked Questions
What do the peptide icons represent?
Each icon is a visual fingerprint of the peptide's real amino acid sequence. Every bubble represents one amino acid in the chain. The size of each bubble corresponds to the molecular weight of that amino acid (Tryptophan is the largest at 204 Da, Glycine is the smallest at 75 Da). The color indicates the amino acid's chemical classification: hydrophobic, polar, positively charged, negatively charged, or special.
How are the icons generated?
Icons are generated deterministically using a circle-packing algorithm inspired by the Apple Watch home screen layout. The peptide's amino acid sequence is parsed, each residue is classified by its biochemical properties, and bubbles are packed with the heaviest amino acids near the center. Thin backbone lines connect amino acids in their actual sequence order. The result is a unique, reproducible visual for every peptide.
What do the colors mean?
Colors represent the five standard amino acid chemical classes: hydrophobic residues (Ala, Ile, Leu, Met, Phe, Trp, Val, Pro), polar residues (Ser, Thr, Asn, Gln, Tyr), positively charged residues (Arg, Lys, His), negatively charged residues (Asp, Glu), and special residues (Gly, Cys). Each peptide category uses a curated color theme — for example, Healing peptides use the Jade theme (greens), while Weight Loss peptides use the Ember theme (warm oranges and reds).
Why are some icons bigger or more complex than others?
The number of bubbles matches the number of amino acids in the peptide's sequence. A short tripeptide like KPV (3 amino acids) has just 3 bubbles, while IGF-1 LR3 (83 amino acids) produces a dense cluster. The relative size of each bubble also varies — peptides rich in heavy amino acids like Tryptophan and Tyrosine will have larger individual bubbles.
Can I download and use these icons?
Yes. You can download any peptide icon as an SVG file for free. SVG files are vector-based, so they scale to any size without losing quality. They are ideal for presentations, research documents, educational materials, and web use.
Are the icons scientifically accurate?
The icons encode real molecular data: the actual amino acid sequence, the molecular weight of each residue, and the biochemical classification of each amino acid. They are not 3D molecular models but rather an abstract visual encoding of the peptide's primary structure — the linear sequence of amino acids that defines the molecule.