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  1. bio.libretexts.org › Bookshelves › Biochemistry4.4: Secondary Structural Motifs and Domains - Biology LibreTexts

    Greek Key. The "Greek Key" symbol represents infinity and the eternal flow of things and resembles in part primitive keys. The Greek Key motif in proteins can be seen in the structure of antiparallel beta sheets in the ordering of four adjacent antiparallel beta strands as shown in Figure \(\PageIndex{9}\).

  2. cs.uwaterloo.ca › ~mli › alexshuoxiangThe Greek Key Motif - University of Waterloo

    What is a Greek Key The Greek keys were so named because of their visual affinity to decorational patterns used in ancient Greek vases shown below (Li, 2006) Where do Greek keys occur? Being a β-motif, Greek keys obviously occur only in proteins having β-strands.

  3. swissmodel.expasy.org › course › textTertiary Protein Structure and Folds | SWISS-MODEL - Expasy

    The Greek Key topology is named after a pattern that was common on Greek pottery. It is formed by three consecutive antiparallel beta-strands connected by hairpins followed by a longer connection to the fourth strand, which lies adjacent to the first.

  4. www.researchgate.net › figure › Greek-topology-and-folding-A-The-Greek-key-designGreek topology and folding. ( A ) The Greek key design, after...

    What is the function of the Greek key motif in -barrels and why is it such a commonly occurring arrangement of β -strands?

  5. link.springer.com › chapter › 10Principles of Protein Structure and Function | SpringerLink

    8 wrz 2017 · The Greek key, a structural motif of antiparallel β-sheets named after a common decorative element found in ancient Greek vases, is slightly more intricate than its up-and-down counterpart. To understand how a Greek key is organized, imagine a segment of four β-strands of similar size numbered from 1 to 4 (from N- to C-terminus).

  6. pubmed.ncbi.nlm.nih.gov › 8506258The Greek key motif: extraction, classification and analysis

    The Greek key is a very common structural motif in proteins. It has been traditionally defined as four beta-strands with '+3,-1,-1' topology. This definition encompasses motifs with several different three-dimensional structures. We have classified Greek keys, based on their hydrogen bonding pattern …

  7. microbenotes.com › parts-of-a-microscopeParts of a Microscope with Functions and Labeled Diagram -...

    27 paź 2024 · Having been constructed in the 16th Century, microscopes have revolutionized science with their ability to magnify small objects such as microbial cells, producing images with definitive structures that are identifiable and characterizable. Derived from Greek words “mikrós” meaning “small” and “skópéō” meaning “look at”. What are Microscopes?

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