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1.

Вид документа : Статья из журнала
РЖ ВИНИТИ 34 (BI23) 96.07-04М2.368

Автор(ы) : Trombitas, Karoly, Jin, Jian-Ping, Granzier, Henk
Заглавие : The mechanically active domain of titin in cardiac muscle
Источник статьи : Circ. Res. - 1995. - Vol. 77, N 4. - С. 856-861
Аннотация: One of the main contributors to passive tension of the myocardium is titin. We assessed the length of the elastic domain of cardiac titin by ultrastructural and mechanical methods. Single cardiac myocytes were stretched by various amounts, and while in the stretched state, they were processed for immunoelectron microscopy. Several monoclonal anti-titin antibodies were used, and the locations of the titin epitopes in the sarcomere were studied as a function of sarcomere length. Only a small fraction (5% to 10%) of the 'ПРИБЛ='1000-nm-long molecule behaved elastically under physiological conditions. This mechanically active domain is located close to the A/I junction, and its contour length when unstretched is estimated at 'ПРИБЛ='50 to 100 nm. In sarcomeres that are slack (length 'ПРИБЛ='1.85 'мю'm), the mechanically active domain is folded on top of itself, and the length of the domain reaches an elastic limit of 'ПРИБЛ='550 nm in sarcomeres that are 'ПРИБЛ='2.9 'мю'm long. Библ. 27
ГРНТИ : 34.39.29
Предметные рубрики: КАРДИОМИОЦИТЫ
СОКРАТИТЕЛЬНЫЕ БЕЛКИ
ТИТИН
МЕХАНИЧЕСКИ АКТИВНЫЙ ДОМЕН
ИММУНОЭЛЕКТРОННАЯ МИКРОСКОПИЯ
КРЫСЫ
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2.

Вид документа : Статья из журнала
РЖ ВИНИТИ 34 (BI49) 96.07-04М1.340

Автор(ы) : Trombitas, Karoly, Jin, Jian-Ping, Granzier, Henk
Заглавие : The mechanically active domain of titin in cardiac muscle
Источник статьи : Circ. Res. - 1995. - Vol. 77, N 4. - С. 856-861
Аннотация: One of the main contributors to passive tension of the myocardium is titin. We assessed the length of the elastic domain of cardiac titin by ultrastructural and mechanical methods. Single cardiac myocytes were stretched by various amounts, and while in the stretched state, they were processed for immunoelectron microscopy. Several monoclonal anti-titin antibodies were used, and the locations of the titin epitopes in the sarcomere were studied as a function of sarcomere length. Only a small fraction (5% to 10%) of the 'ПРИБЛ='1000-nm-long molecule behaved elastically under physiological conditions. This mechanically active domain is located close to the A/I junction, and its contour length when unstretched is estimated at 'ПРИБЛ='50 to 100 nm. In sarcomeres that are slack (length 'ПРИБЛ='1.85 'мю'm), the mechanically active domain is folded on top of itself, and the length of the domain reaches an elastic limit of 'ПРИБЛ='550 nm in sarcomeres that are 'ПРИБЛ='2.9 'мю'm long. Библ. 27
ГРНТИ : 34.41.15
Предметные рубрики: КАРДИОМИОЦИТЫ
СОКРАТИТЕЛЬНЫЕ БЕЛКИ
ТИТИН
МЕХАНИЧЕСКИ АКТИВНЫЙ ДОМЕН
ИММУНОЭЛЕКТРОННАЯ МИКРОСКОПИЯ
КРЫСЫ
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