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Purification, crystallization and preliminary X-ray diffraction of the N-terminal calmodulin-like domain of the human mitochondrial ATP-Mg/Pi carrier SCaMC1.

ABSTRACT: SCaMC is an ATP-Mg/Pi carrier protein located at the mitochondrial inner membrane. SCaMC has an unusual N-terminal Ca(2+)-binding domain (NTD) in addition to its characteristic six-helix transmembrane bundle. The NTD of human SCaMC1 (residues 1-193) was expressed and purified in order to study its role in Ca(2+)-regulated ATP-Mg/Pi transport mediated by its transmembrane domain. While Ca(2+)-bound NTD could be crystallized, the apo state resisted extensive crystallization trials. Selenomethionine-labeled Ca(2+)-bound NTD crystals, which belonged to space group P6(2)22 with one molecule per asymmetric unit, diffracted X-rays to 2.9?Å resolution.

SUBMITTER: Yang Q

PROVIDER: S-EPMC3943107 | biostudies-literature | 2014 Jan

REPOSITORIES: biostudies-literature

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Purification, crystallization and preliminary X-ray diffraction of the N-terminal calmodulin-like domain of the human mitochondrial ATP-Mg/Pi carrier SCaMC1.

Yang Qin Q Brüschweiler Sven S Chou James J JJ

Acta crystallographica. Section F, Structural biology communications 20131224 Pt 1

SCaMC is an ATP-Mg/Pi carrier protein located at the mitochondrial inner membrane. SCaMC has an unusual N-terminal Ca(2+)-binding domain (NTD) in addition to its characteristic six-helix transmembrane bundle. The NTD of human SCaMC1 (residues 1-193) was expressed and purified in order to study its role in Ca(2+)-regulated ATP-Mg/Pi transport mediated by its transmembrane domain. While Ca(2+)-bound NTD could be crystallized, the apo state resisted extensive crystallization trials. Selenomethionin ...[more]

PMID: 24419621

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