1PDX

PUTIDAREDOXIN

1PDX の概要

• エントリーDOI: 10.2210/pdb1pdx/pdb
• 分子名称: PROTEIN (PUTIDAREDOXIN), FE2/S2 (INORGANIC) CLUSTER (2 entities in total)
• 機能のキーワード: electron transfer, cytochrome p450cam, ferredoxin, iron-sulfur cluster
• 由来する生物種: Pseudomonas putida
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 11604.73

構造登録者

Pochapsky, T.C.,Jain, N.U.,Kuti, M.,Lyons, T.A.,Heymont, J. (登録日: 1999-02-15, 公開日: 1999-05-12, 最終更新日: 2023-12-27)

主引用文献

Pochapsky, T.C.,Jain, N.U.,Kuti, M.,Lyons, T.A.,Heymont, J.
A refined model for the solution structure of oxidized putidaredoxin.
Biochemistry, 38:4681-4690, 1999

PubMed Abstract: A refined model for the solution structure of oxidized putidaredoxin (Pdxo), a Cys4Fe2S2 ferredoxin, has been determined. A previous structure (Pochapsky et al. (1994) Biochemistry 33, 6424-6432; PDB entry ) was calculated using the results of homonuclear two-dimensional NMR experiments. New data has made it possible to calculate a refinement of the original Pdxo solution structure. First, essentially complete assignments for diamagnetic 15N and 13C resonances of Pdxo have been made using multidimensional NMR methods, and 15N- and 13C-resolved NOESY experiments have permitted the identification of many new NOE restraints for structural calculations. Stereospecific assignments for leucine and valine CH3 resonances were made using biosynthetically directed fractional 13C labeling, improving the precision of NOE restraints involving these residues. Backbone dihedral angle restraints have been obtained using a combination of two-dimensional J-modulated 15N,1H HSQC and 3D (HN)CO(CO)NH experiments. Second, the solution structure of a diamagnetic form of Pdx, that of the C85S variant of gallium putidaredoxin, in which a nonligand Cys is replaced by Ser, has been determined (Pochapsky et al. (1998) J. Biomol. NMR 12, 407-415), providing information concerning structural features not observable in the native ferredoxin due to paramagnetism. Third, a crystal structure of a closely related ferredoxin, bovine adrenodoxin, has been published (Müller et al. (1998) Structure 6, 269-280). This structure has been used to model the metal binding site structure in Pdx. A family of fourteen structures is presented that exhibits an rmsd of 0.51 A for backbone heavy atoms and 0.83 A for all heavy atoms. Exclusion of the modeled metal binding loop region reduces overall the rmsd to 0.30 A for backbone atoms and 0.71 A for all heavy atoms.

PubMed: 10200155
DOI: 10.1021/bi983030b

実験手法

SOLUTION NMR