1TFS:
reference: NMR and restrained molecular dynamics study of the three-dimensional solution structure of toxin FS2, a specific blocker of the L-type calcium channel, isolated from black mamba venom., Albrand JP, Blackledge MJ, Pascaud F, Hollecker M, Marion D, Biochemistry 1995 May 2;34(17):5923-37. PMID: 7727450

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