The jelly roll or Swiss roll fold is a protein fold or supersecondary structure composed of eight beta strands arranged in two four-stranded sheets. The name of the structure was introduced by Jane S. Richardson in 1981, reflecting its resemblance to the jelly or Swiss roll cake. The fold is an elaboration on the Greek key motif and is sometimes considered a form of beta barrel. It is very common in viral proteins, particularly viral capsid proteins. Taken together, the jelly roll and Greek key structures comprise around 30% of the all-beta proteins annotated in the Structural Classification of Proteins (SCOP) database.
Bado siku 79 hadi mechi ya kwanza ya Kombe la Dunia la FIFA 2026. Mechi ya ufunguzi itachezwa Alhamisi, 11 Juni 2026 mjini Mexico, na ratiba ya FIFA inaonyesha mchezo huo ni Mexico dhidi ya Afrika Kusini maarufu Bafana Bafana (The Boys in Zulu).
Tayari Shirikisho la Soka la Dunia (FIFA)...
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