Abstract
Partial cDNAs of the ryanodine receptor were cloned using PCR analysis from reverse transcribed total and mRNA, extracted from freshly isolated pregnant, non-pregnant, and cultured human myometrial smooth muscle. The identity of these clones was confirmed by nucleotide sequencing of the fragments and indicate the expression of both the skeletal and brain ryanodine receptor isoforms in these preparations. In freshly isolated non-pregnant myometrial tissue, membrane fractions displaying specific [3H]ryanodine binding activities were isolated using density gradient centrifugation. SDS-PAGE of the sucrose gradient fractions indicated the specific comigration of a polypeptide with a molecular mass of approximately 544 kDa with the ryanodine binding activity.
Publication types
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Amino Acid Sequence
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Animals
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Base Sequence
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Caffeine / pharmacology
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Calcium / metabolism
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Calcium Channels / chemistry*
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Calcium Channels / genetics*
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Calcium Channels / isolation & purification
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Calmodulin-Binding Proteins / chemistry*
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Calmodulin-Binding Proteins / genetics*
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Calmodulin-Binding Proteins / isolation & purification
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Cells, Cultured
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Cloning, Molecular
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Electrophoresis, Polyacrylamide Gel
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Female
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Humans
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Molecular Sequence Data
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Muscle Proteins / chemistry*
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Muscle Proteins / genetics*
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Muscle Proteins / isolation & purification
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Muscle, Skeletal / metabolism
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Myometrium / chemistry*
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Myometrium / metabolism
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Pregnancy
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Rabbits
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Ryanodine / pharmacology
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Ryanodine Receptor Calcium Release Channel
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Saponins / pharmacology
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Sarcoplasmic Reticulum / metabolism
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Sequence Alignment
Substances
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Calcium Channels
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Calmodulin-Binding Proteins
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Muscle Proteins
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Ryanodine Receptor Calcium Release Channel
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Saponins
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Ryanodine
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Caffeine
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Calcium