Electron microscope observations on thick filaments in striated muscle from the lobster Homarus americanus

Donaline Hayes; Mae Huang; C. Richard Zobel

doi:10.1016/S0022-5320(71)80037-0

Electron microscope observations on thick filaments in striated muscle from the lobster Homarus americanus

Donaline Hayes, Mae Huang, C. Richard Zobel

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20 Scopus citations

Abstract

The size and appearance of thick filaments in lobster claw and tail muscle have been determined from EM observations on thin sections and isolated filaments. The filaments from both types of tissue are about 180 Å in diameter, but those from claw muscle are approximately 6 μ long, whereas the filaments from tail muscle are only ca. 3.4 μ long. The ratio of thin to thick filaments in the two muscles is 12/1 and 3/1, respectively. Also noted was an apparent variation in cross-sectional density of the filaments. In tail muscle, the filaments appear to be solid in the central region whereas in the A-I overlap region they appear to be hollow.

Original language	English (US)
Pages (from-to)	17-30
Number of pages	14
Journal	Journal of Ultrasructure Research
Volume	37
Issue number	1-2
DOIs	https://doi.org/10.1016/S0022-5320(71)80037-0
State	Published - Oct 1971
Externally published	Yes

ASJC Scopus subject areas

Anatomy
Molecular Biology

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10.1016/S0022-5320(71)80037-0

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@article{0cb43b452eb64c25a4dd4ba8fc2cd293,

title = "Electron microscope observations on thick filaments in striated muscle from the lobster Homarus americanus",

abstract = "The size and appearance of thick filaments in lobster claw and tail muscle have been determined from EM observations on thin sections and isolated filaments. The filaments from both types of tissue are about 180 {\AA} in diameter, but those from claw muscle are approximately 6 μ long, whereas the filaments from tail muscle are only ca. 3.4 μ long. The ratio of thin to thick filaments in the two muscles is 12/1 and 3/1, respectively. Also noted was an apparent variation in cross-sectional density of the filaments. In tail muscle, the filaments appear to be solid in the central region whereas in the A-I overlap region they appear to be hollow.",

author = "Donaline Hayes and Mae Huang and Zobel, {C. Richard}",

note = "Funding Information: Observations bearing on these possibilities have been reported by a number of investigators. Thus, a wide range of sarcomere and filament sizes have been observed both from various tissues within individual organisms and in animals from different species (see Table I). Not only do the myofilaments differ in length, but purportedly also in diameter. Evidence has been presented to support the hypothesis that in 1 Work supported by USPHS Grant No. AM-07635 and funds from the Muscular Dystrophy Association of America.",

year = "1971",

month = oct,

doi = "10.1016/S0022-5320(71)80037-0",

language = "English (US)",

volume = "37",

pages = "17--30",

journal = "Journal of Ultrasructure Research",

issn = "0022-5320",

publisher = "Academic Press Inc.",

number = "1-2",

}

TY - JOUR

T1 - Electron microscope observations on thick filaments in striated muscle from the lobster Homarus americanus

AU - Hayes, Donaline

AU - Huang, Mae

AU - Zobel, C. Richard

N1 - Funding Information: Observations bearing on these possibilities have been reported by a number of investigators. Thus, a wide range of sarcomere and filament sizes have been observed both from various tissues within individual organisms and in animals from different species (see Table I). Not only do the myofilaments differ in length, but purportedly also in diameter. Evidence has been presented to support the hypothesis that in 1 Work supported by USPHS Grant No. AM-07635 and funds from the Muscular Dystrophy Association of America.

PY - 1971/10

Y1 - 1971/10

N2 - The size and appearance of thick filaments in lobster claw and tail muscle have been determined from EM observations on thin sections and isolated filaments. The filaments from both types of tissue are about 180 Å in diameter, but those from claw muscle are approximately 6 μ long, whereas the filaments from tail muscle are only ca. 3.4 μ long. The ratio of thin to thick filaments in the two muscles is 12/1 and 3/1, respectively. Also noted was an apparent variation in cross-sectional density of the filaments. In tail muscle, the filaments appear to be solid in the central region whereas in the A-I overlap region they appear to be hollow.

AB - The size and appearance of thick filaments in lobster claw and tail muscle have been determined from EM observations on thin sections and isolated filaments. The filaments from both types of tissue are about 180 Å in diameter, but those from claw muscle are approximately 6 μ long, whereas the filaments from tail muscle are only ca. 3.4 μ long. The ratio of thin to thick filaments in the two muscles is 12/1 and 3/1, respectively. Also noted was an apparent variation in cross-sectional density of the filaments. In tail muscle, the filaments appear to be solid in the central region whereas in the A-I overlap region they appear to be hollow.

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ER -

Electron microscope observations on thick filaments in striated muscle from the lobster Homarus americanus

Abstract

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