17 protein PNG images with transparent background
Protein structures drawn as ribbons: rainbow-coloured helices and loops, membrane receptors built from a bundle of long helices, two-domain enzymes with a barrel of beta strands, and large multi-subunit complexes.
- Images
- 17
- Sizes
- 600 to 1 200 px
- Formats
- PNG with alpha, WebP, JPG
- Download
- free, no sign-up
Subtopics
Filters
PTK2B Integrin-linked kinase Gene Protein PNG
OCA2 hect domain and RLD 2 Gene Protein PNG
Protein Data Bank Structural Classification PNG
Protein Text, Snrnp, Ribonucleoprotein PNG
TINF2 TERF1 Shelterin Gene Telomere, text PNG
TOB1 Protein CNOT7 PABPC1 Ribosome, text PNG
QDPR Phenylalanine hydroxylase Gene PNG
FANCE FANCA Fanconi anemia, complementation PNG
Melanocortin 4 receptor Melanocortin PNG
Ccr2 Text, Chemokine, Chemokine Receptor PNG
Interleukin 9 Interleukin 4 Crystal PNG
Vinculin Integrin Cytoskeleton Actin PNG
Calmodulin Text, Calmodulin 1, Calm3, Calm2 PNG
Casein Kinase 2 Alpha 1 Text, Csnk2b PNG
Axon terminal TIMM44 Translocase of the PNG
P-glycoprotein Gene Rabaptin RABEP1, text PNG
Pcsk9 Text, Protein, Proprotein Convertase PNG
Reading the ribbons
A coiled ribbon is an alpha helix, a broad flat arrow is a beta strand, and the thin thread linking them is a loop. When the colour runs from blue through green and yellow to red, it follows the chain from its first residue to its last, so you can trace how a single strand folds back on itself.
Picking the right model
A small, tidy fold is the one to use when teaching secondary structure — every helix and sheet is visible on its own. Dense complexes work as cover art for a talk or a poster headline: they look like intricate machinery even when nobody reads the caption. The helix-bundle receptors are a natural fit for anything about cell membranes or signalling.
Backgrounds and small sizes
Some renders sit on a pale grey backdrop, others on transparency. Thin loops vanish when shrunk, so for an icon or a bullet point choose a compact protein with chunky helices.
Questions and answers
Is the transparency real or a painted checkerboard?
Real. We parse the PNG structure and keep only files with an alpha channel; anything with a painted-in background has been removed.
What sizes are available?
In protein the sizes run from 600 to 1 200 px on the long side. Large ones are easiest to find with the “Largest” sort or the minimum-width filter.
How many files can I download?
No registration. The only limit is a few dozen files per minute per address, so the catalogue cannot be bulk-scraped.
Can I use protein images commercially?
Terms depend on the specific image. We neither sell files nor issue licences; for commercial work check the source named on the image page.