| http://purl.uniprot.org/citations/19797054 | http://www.w3.org/1999/02/22-rdf-syntax-ns#type | http://purl.uniprot.org/core/Journal_Citation |
| http://purl.uniprot.org/citations/19797054 | http://www.w3.org/2000/01/rdf-schema#comment | "The loss of slow skeletal muscle troponin T (TnT) results in a recessive nemaline myopathy in the Amish featured with lethal respiratory failure. The genes encoding slow TnT and cardiac troponin I (TnI) are closely linked. Ex vivo promoter analysis suggested that the 5'-enhancer region of the slow TnT gene overlaps with the structure of the upstream cardiac TnI gene. Using transgenic expression of exogenous cardiac TnI to rescue the postnatal lethality of a mouse line in which the entire cardiac TnI gene was deleted, we investigated the effect of enhancer deletion on slow TnT gene expression in vivo and functional consequences. The levels of slow TnT mRNA and protein were significantly reduced in the diaphragm muscle of adult double transgenic mice. The slow TnT-deficient (ssTnT-KD) diaphragm muscle exhibited atrophy and decreased ratios of slow versus fast isoforms of TnT, TnI, and myosin. Consistent with the changes toward more fast myofilament contents, ssTnT-KD diaphragm muscle required stimulation at higher frequency for optimal tetanic force production. The ssTnT-KD diaphragm muscle also exhibited significantly reduced fatigue tolerance, showing faster and more declines of force with slower and less recovery from fatigue as compared with the wild type controls. The natural switch to more slow fiber contents during aging was partially blunted in the ssTnT-KD skeletal muscle. The data demonstrated a critical role of slow TnT in diaphragm function and in the pathogenesis and pathophysiology of Amish nemaline myopathy."xsd:string |
| http://purl.uniprot.org/citations/19797054 | http://purl.org/dc/terms/identifier | "doi:10.1074/jbc.m109.020826"xsd:string |
| http://purl.uniprot.org/citations/19797054 | http://purl.uniprot.org/core/author | "Wei B."xsd:string |
| http://purl.uniprot.org/citations/19797054 | http://purl.uniprot.org/core/author | "Jin J.P."xsd:string |
| http://purl.uniprot.org/citations/19797054 | http://purl.uniprot.org/core/author | "Feng H.Z."xsd:string |
| http://purl.uniprot.org/citations/19797054 | http://purl.uniprot.org/core/date | "2009"xsd:gYear |
| http://purl.uniprot.org/citations/19797054 | http://purl.uniprot.org/core/name | "J Biol Chem"xsd:string |
| http://purl.uniprot.org/citations/19797054 | http://purl.uniprot.org/core/pages | "31798-31806"xsd:string |
| http://purl.uniprot.org/citations/19797054 | http://purl.uniprot.org/core/title | "Deletion of a genomic segment containing the cardiac troponin I gene knocks down expression of the slow troponin T gene and impairs fatigue tolerance of diaphragm muscle."xsd:string |
| http://purl.uniprot.org/citations/19797054 | http://purl.uniprot.org/core/volume | "284"xsd:string |
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