Crystal structure of Flavin-containing Putative Monooxygenase (NP_373108.1) from STAPHYLOCOCCUS AUREUS MU50 at 2.40 A resolution

Joint Center for Structural Genomics (JCSG)

Crystal structure of a Baeyer-Villiger flavin-containing monooxygenase from Staphylococcus aureus MRSA strain MU50.

Single crystal Si(111) bent monochromator (horizontal focusing)

Flavin-containing Putative Monooxygenase

G(MSE)QHHKVAIIGAGAAGIG(MSE)AITLKDFGITDVIILEKGTVGHSFKHWPKSTRTITPSFTSNGFG(MSE)PD
(MSE)NAIS(MSE)DTSPAFTFNEEHISGETYAEYLQVVANHYELNIFENTVVTNISADDAYYTIATTTETYHADYIFVA
TGDYNFPKKPFKYGIHYSEIEDFDNFNKGQYVVIGGNESGFDAAYQLAKNGSDIALYTSTTGLNDPDADPSVRLSPYTRQ
RLGNVIKQGARIE(MSE)NVHYTVKDIDFNNGQYHISFDSGQSVHTPHEPILATGFDATKNPIVQQLFVTTNQDIKLTTH
DESTRYPNIF(MSE)IGATVENDNAKLCYIYKFRARFAVLAHLLTQREGLPAKQEVIENYQKNQ(MSE)YLDDYSCCEVS
CTC

GMQHHKVAIIGAGAAGIGMAITLKDFGITDVIILEKGTVGHSFKHWPKSTRTITPSFTSNGFGMPDMNAISMDTSPAFTF
NEEHISGETYAEYLQVVANHYELNIFENTVVTNISADDAYYTIATTTETYHADYIFVATGDYNFPKKPFKYGIHYSEIED
FDNFNKGQYVVIGGNESGFDAAYQLAKNGSDIALYTSTTGLNDPDADPSVRLSPYTRQRLGNVIKQGARIEMNVHYTVKD
IDFNNGQYHISFDSGQSVHTPHEPILATGFDATKNPIVQQLFVTTNQDIKLTTHDESTRYPNIFMIGATVENDNAKLCYI
YKFRARFAVLAHLLTQREGLPAKQEVIENYQKNQMYLDDYSCCEVSCTC

1.6000M (NH4)2SO4, 0.1M MES pH 6.0, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 277K

THE CONSTRUCT WAS EXPRESSED WITH A PURIFICATION TAG MGSDKIHHHHHHENLYFQG. THE TAG WAS REMOVED WITH TEV PROTEASE LEAVING ONLY A GLYCINE (0) FOLLOWED BY THE TARGET SEQUENCE.

1. HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS.
2. ATOM RECORDS CONTAIN RESIDUAL B FACTORS ONLY.
3. A MET-INHIBITION PROTOCOL WAS USED FOR SELENOMETHIONINE
INCORPORATION DURING PROTEIN EXPRESSION. THE OCCUPANCY
OF THE SE ATOMS IN THE MSE RESIDUES WAS REDUCED TO 0.75
FOR THE REDUCED SCATTERING POWER DUE TO PARTIAL S-MET
INCORPORATION.
4. FAD IS MODELED BASED ON DENSITY AND STRUCTURAL
HOMOLOGY. SO4 IS PRESENT IN CRYSTALLIZATION CONDITION.
AN UNKNOWN LIGAND (UNL) WAS MODELLED AT THE PUTATIVE
ACTIVE SITE BASED ON A STRUCTURAL HOMOLOG (PDB 2GVC).
5. DENSITY FOR THE FOLLOWING REGIONS ARE POOR: A62,A118,

AUTHOR STATE THAT ANALYTICAL SIZE EXCLUSION CHROMATOGRAPHY SUPPORTS THE ASSIGNMENT OF A DIMER AS A SIGNIFICANT OLIGOMERIZATION STATE IN SOLUTION.

NP_373108.1, Flavin-containing Putative Monooxygenase, Structural Genomics, Joint Center for Structural Genomics, JCSG, Protein Structure Initiative, PSI-2, Oxidoreductase, Pyridine nucleotide-disulphide oxidoreductase

MQHHKVAIIGAGAAGIGMAITLKDFGITDVIILEKGTVGHSFKHWPKSTRTITPSFTSNGFGMPDMNAISMDTSPAFTFN
EEHISGETYAEYLQVVANHYELNIFENTVVTNISADDAYYTIATTTETYHADYIFVATGDYNFPKKPFKYGIHYSEIEDF
DNFNKGQYVVIGGNESGFDAAYQLAKNGSDIALYTSTTGLNDPDADPSVRLSPYTRQRLGNVIKQGARIEMNVHYTVKDI
DFNNGQYHISFDSGQSVHTPHEPILATGFDATKNPIVQQLFVTTNQDIKLTTHDESTRYPNIFMIGATVENDNAKLCYIY
KFRARFAVLAHLLTQREGLPAKQEVIENYQKNQMYLDDYSCCEVSCTC