The larger of the two subunits of an organellar ribosome. Two sites on the ribosomal large subunit are involved in translation: the aminoacyl site (A site) and peptidyl site (P site).

The larger of the two subunits of a ribosome. Two sites on the ribosomal large subunit are involved in translation, namely the aminoacyl site (A site) and peptidyl site (P site).

The directed movement of sulfite into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.

The smaller of the two subunits of an organellar ribosome.

The smaller of the two subunits of a ribosome.

The larger of the two subunits of a plastid ribosome. Two sites on the ribosomal large subunit are involved in translation: the aminoacyl site (A site) and peptidyl site (P site).

The smaller of the two subunits of a plastid ribosome.

Catalysis of the reaction: 5-phospho-alpha-D-ribose 1-diphosphate + xanthine = (9-D-ribosylxanthine)-5'-phosphate + diphosphate.

Catalysis of the reaction: RMP + diphosphate = R + 5-phospho-alpha-D-ribose 1-diphosphate.

A process, occurring in the heart, in which a decrease in cell mass and then in heart size occurs due to shrinking of the individual cells. The shrinkage is caused by protein degradation.

A process, occurring in striated muscle, that is characterized by a decrease in protein content, fiber diameter, force production and fatigue resistance in response to different conditions such as starvation, aging and disuse.

The enlargement or overgrowth of all or part of an organ due to an increase in size of muscle cells without cell division. In the case of striated muscle, this happens due to the additional synthesis of sarcomeric proteins and assembly of myofibrils.

The muscle system process that results in enlargement or overgrowth of all or part of a muscle organ due to an increase in the size of its muscle cells. Physiological hypertrophy is a normal process during development (it stops in cardiac muscle after adolescence) and can also be brought on in response to demand. In athletes cardiac and skeletal muscles undergo hypertrophy stimulated by increasing muscle activity on exercise. Smooth muscle cells in the uterus undergo hypertrophy during pregnancy.

The physiological enlargement or overgrowth of all or part of the heart muscle due to an increase in size (not length) of individual cardiac muscle fibers, without cell division, as a result of a disturbance in organismal or cellular homeostasis.

The enlargement or overgrowth of all or part of the heart muscle due to an increase in size of cardiac muscle cells without cell division.

The enlargement or overgrowth of all or part of a muscle organ or tissue due to an increase in the size of its muscle cells as a result of a disturbance in organismal or cellular homeostasis.

The enlargement or overgrowth of all or part of an organ due to an increase in size of its smooth muscle cells without cell division. Physiological hypertrophy is a normal process during development, and can also occur in mature structures on demand. In the uterus, smooth muscle cells undergo hypertrophy during pregnancy.

Any process in which smooth muscle adapts, with consequent modifications to structural and/or functional phenotypes, in response to a stimulus. Stimuli include contractile activity, loading conditions, substrate supply, and environmental factors. These adaptive events occur in both muscle fibers and associated structures (motoneurons and capillaries), and they involve alterations in regulatory mechanisms, contractile properties and metabolic capacities.

A organ system process carried out at the level of a muscle. Muscle tissue is composed of contractile cells or fibers.