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The Titin protein is located between the myosin thick filament and the Z disk. [25] Titin consists primarily of a linear array of two types of modules, also referred to as protein domains (244 copies in total): type I fibronectin type III domain (132 copies) and type II immunoglobulin domain (112 copies).
58916 Ensembl ENSG00000120729 ENSMUSG00000024471 UniProt Q9UBF9 Q9JIF9 RefSeq (mRNA) NM_006790 NM_001135940 NM_001300911 NM_001033621 RefSeq (protein) NP_001129412 NP_001287840 NP_006781 NP_001028793 Location (UCSC) Chr 5: 137.87 – 137.89 Mb Chr 18: 44.47 – 44.49 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Myotilin is a protein that in humans is encoded by the MYOT gene ...
Thick filaments consist primarily of the protein myosin, that is responsible for force generation. It is composed of a globular head with both ATP and actin binding sites, and a long tail involved in its polymerization into myosin filaments. Elastic filaments are made up of a giant protein called titin and hold the thick filaments in place.
The main proteins involved are myosin, actin, and titin. Myosin and actin are the contractile proteins and titin is an elastic protein. The myofilaments act together in muscle contraction, and in order of size are a thick one of mostly myosin, a thin one of mostly actin, and a very thin one of mostly titin. [1] [2]
The IUPAC name for Titin. This is the largest known protein and so has the longest chemical name. Written in full, it contains 189,819 letters. [48] Periplanone B: Periplanone B A pheromone of the female American cockroach. Thebacon: Thebacon Dihydrocodeinone enol acetate, an opioid analgesic or antitussive. [citation needed]
They consist of a long polypeptide chain that usually adopts a single stable three-dimensional structure. They fulfill a wide variety of functions including providing structural stability to cells, catalyze chemical reactions that produce or store energy or synthesize other biomolecules including nucleic acids and proteins, transport essential ...
Similar to titin, it is thought to act as a molecular ruler along for thin filament assembly. Several proteins important for the stability of the sarcomeric structure are found in the Z-line as well as in the M-band of the sarcomere. Actin filaments and titin molecules are cross-linked in the Z-disc via the Z-line protein alpha-actinin.
Myomesin is bound to myosin at its N-terminal. Obscurin connects the myomesin dimers and binds to the C-terminal of titin. It is thought that the myomesin-titin interaction is vital for the execution of the mechanical functions of the Ser/Thr kinase domain of titin. [2] Myomesin is a protein family found in the M-line of the sarcomere structure.