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Dr. Irene  Sung   image

Dr. Irene Sung

1380 Howard St
San Francisco CA 94103
415 553-3742
Medical School: Other - Unknown
Accepts Medicare: No
Participates In eRX: No
Participates In PQRS: No
Participates In EHR: No
License #: G074626
NPI: 1932238094
Taxonomy Codes:
2084P0804X

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Publications

Resonance assignments and secondary structure of calmodulin in complex with its target sequence in rat olfactory cyclic nucleotide-gated ion channel. - Biomolecular NMR assignments
Calmodulin (CaM), the primary receptor for intracellular Ca(2+), regulates a large number of key enzymes and controls a wide spectrum of important biological responses. Olfactory cyclic nucleotide-gated ion channels (OLF channels) mediate olfactory transduction in olfactory receptor neurons. The opening of OLF leads to a rise in cytosolic concentration of Ca(2+), upon binding to Ca(2+), CaM disrupts the open conformation by binding to the CaM-binding domain in the N-terminal region and triggers the close mechanism. In order to unravel the regulatory role of CaM from structural point of view, NMR techniques were used to characterize the structure of CaM in association with the CaM binding domain of rat OLF channel (OLFp, 28 residues). Our data indicated that two distinct CaM/OLFp complexes existed simultaneously with stable structures that were not inter-exchangeable within the NMR time scale. Here, we report the full backbone and side chain resonance assignments of these two complexes of CaM/OLFp.
Molecular epidemiological investigation of Plasmodium knowlesi in humans and macaques in Singapore. - Vector borne and zoonotic diseases (Larchmont, N.Y.)
Singapore reported its first locally acquired human Plasmodium knowlesi infection in 2007, involving a soldier who had undergone training in a forested area where long-tailed macaques are frequently seen. Comprehensive disease surveillance and monitoring system that was set up after the initial case detected four additional human P. knowlesi cases in 2007 and one in 2008. All involved military personnel who had undergone training in the forested area, and none had traveled out of Singapore 1 month before the onset of symptoms. Screening for malaria parasites on blood obtained from long-tailed macaques revealed that wild monkeys (n=3) caught from the forested area were infected with P. knowlesi, whereas peri-domestic monkeys (n=10) caught from a nature reserve park were not infected with any malaria parasites. Phylogenetic analysis of the nonrepeat region of the P. knowlesi csp genes showed that the sequences obtained from the human cases were not distinct from those obtained from wild monkeys. Further, certain genotypes were shared between samples from humans and macaques. Our findings provide evidence that long-tailed macaques are the natural hosts of P. knowlesi in Singapore and the human cases acquired their infection in the same vicinity where these monkeys are found. Further, the risk of acquiring P. knowlesi infection among the general population of Singapore is small as evident from the absence of P. knowlesi in peri-domestic monkeys.

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1380 Howard St San Francisco, CA 94103
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