Sandbox GGC5

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Function

Titin is a key component in the assembly and function of vertebrate striated muscles. Titin provides connections at the level of individual micro-filaments and contributes to the fine balance of forces between the two halves of the sarcomere. In non-muscle cells, titin plays a role in chromosome condensation and chromosome segregation during mitosis.

On the cellular level, titin is typically located within the nucleus of the cell; however, it can also be located within the cytoplasm.

Disease

Relevance

Structural highlights

This is the version of the titin molecule. This structure is colored to differentiate each chain, starting with the blue 5' amino end, ending with the red 3' carboxyl end.

This secondary structure of titin highlights the sections of the titin molecule. In this representation, Polar sections of titin are shaded in purple and hydrophobic regions are shaded in grey. The central beta-sandwich structure of the molecule encloses a well defined hydrophobic core. This helps to stabilize the molecule that contains no disulfide bridges and rely solely on hydrogen bonding in the side chains and backbone.

This is the structure. This secondary view shows multiple titin proteins connected together. This representation is known as the titin band.