The titin N2B and N2A regions: biomechanical and metabolic signaling hubs in cross-striated muscles

RJ van der Pijl, AA Domenighetti, F Sheikh, E Ehler… - Biophysical …, 2021 - Springer
Muscle specific signaling has been shown to originate from myofilaments and their
associated cellular structures, including the sarcomeres, costameres or the cardiac …

Walking with giants: The challenges of variant impact assessment in the giant sarcomeric protein titin

TGR Weston, M Rees, M Gautel… - WIREs Mechanisms of …, 2024 - Wiley Online Library
Titin, the so‐called “third filament” of the sarcomere, represents a difficult challenge for the
determination of damaging genetic variants. A single titin molecule extends across half the …

Titin activates myosin filaments in skeletal muscle by switching from an extensible spring to a mechanical rectifier

C Squarci, P Bianco, M Reconditi… - Proceedings of the …, 2023 - National Acad Sciences
Titin is a molecular spring in parallel with myosin motors in each muscle half-sarcomere,
responsible for passive force development at sarcomere length (SL) above the physiological …

Titin N2A domain and its interactions at the sarcomere

AO Adewale, YH Ahn - International journal of molecular sciences, 2021 - mdpi.com
Titin is a giant protein in the sarcomere that plays an essential role in muscle contraction
with actin and myosin filaments. However, its utility goes beyond mechanical functions …

Molecular insights into titin's A-band

JR Fleming, I Müller, T Zacharchenko… - Journal of Muscle …, 2023 - Springer
The thick filament-associated A-band region of titin is a highly repetitive component of the
titin chain with important scaffolding properties that support thick filament assembly. It also …

The calcium-binding protein S100A1 binds to titin's N2A insertion sequence in a pH-dependent manner

SI Apel, E Schaffter, N Melisi, MJ Gage - Journal of General Physiology, 2025 - rupress.org
Titin is the third contractile filament in the sarcomere, and it plays a critical role in sarcomere
integrity and both passive and active tension. Unlike the thick and thin filaments, which are …

[HTML][HTML] Pairwise sequence similarity mapping with PaSiMap: Reclassification of immunoglobulin domains from titin as case study

K Su, O Mayans, K Diederichs, JR Fleming - Computational and Structural …, 2022 - Elsevier
Sequence comparison is critical for the functional assignment of newly identified protein
genes. As uncharacterized protein sequences accumulate, there is an increasing need for …

Identification of the domains within the N2A region of titin that regulate binding to actin

C Tsiros, E Punch, E Schaffter, S Apel… - … and Biophysical Research …, 2022 - Elsevier
Titin, the largest muscle protein, plays an important role in passive tension, sarcomeric
integrity and cell signaling within the muscle. Recent work has also highlighted a role for titin …

Phenomenological Muscle Constitutive Model With Actin–Titin Binding for Simulating Active Stretching

ML Sampaio de Oliveira… - Journal of …, 2025 - asmedigitalcollection.asme.org
The force produced by a muscle depends on its contractile history, yet human movement
simulations typically employ muscle models that define the force–length relationship from …

Titin UN2A Acts as a Stable, Non‐Polymorphic Scaffold in its Binding to CARP

J Stehle, JR Fleming, PM Bauer, O Mayans… - …, 2023 - Wiley Online Library
The N2A segment of titin functions as a pivotal hub for signal transduction and interacts with
various proteins involved in structural support, chaperone activities, and transcriptional …