NMR paper NMR analyses of the interactions of human annexin I with ATP, Ca2+, and Mg2+.

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[NMR paper] NMR analyses of the interactions of human annexin I with ATP, Ca2+, and Mg2+.

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11-17-2010, 11:06 PM

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NMR analyses of the interactions of human annexin I with ATP, Ca2+, and Mg2+.

NMR analyses of the interactions of human annexin I with ATP, Ca2+, and Mg2+.

Related Articles NMR analyses of the interactions of human annexin I with ATP, Ca2+, and Mg2+.

FEBS Lett. 1998 Apr 3;425(3):523-7

Authors: Han HY, Lee YH, Oh JY, Na DS, Lee BJ

Human annexin I is a member of the annexin family of calcium-dependent phospholipid binding proteins. The structure of an N-terminally truncated human annexin I (delta-annexin I) and its interactions with Ca2+, Mg2+, and ATP were studied at the atomic level using nuclear magnetic resonance (NMR) spectroscopy. Since delta-annexin I is a large protein, with a molecular weight of 35 kDa, a site-specific (carbonyl-13C, amide-15N) labeling technique was used to determine the interaction sites of delta-annexin I with Ca2+, Mg2+, and ATP. The 13C NMR study focused on the carbonyl carbon resonances of the histidine residues of delta-annexin I. We found that ATP binds to delta-annexin I, and that the ATP binding site is located in the 1-domain of annexin I. We also found that histidine-52 is involved in that site, and that the binding ratio of ATP to delta-annexin I is 1:1.

PMID: 9563526 [PubMed - indexed for MEDLINE]

Source: PubMed

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