Crystal structure of a duf849 family protein (bxe_c0271) from burkholderia xenovorans lb400 at 1.90 A resolution

Joint Center for Structural Genomics (JCSG)

Crystal structure of protein of unknown function (DUF849) (YP_555544.1) from BURKHOLDERIA XENOVORANS LB400 at 1.90 A resolution

Flat collimating mirror, toroid focusing mirror

G(MSE)KQSKKIIITCAVTGSIHTPT(MSE)SPYLPITPEEIVKEGVAAAEAGAA(MSE)LHLHARDPLNGRPSQDPDLF
(MSE)RFLPQLKERTDAILNITTGGGLG(MSE)SLDERLAPARAARPEVAS(MSE)N(MSE)GSLNFNISQAAAKFDTFK
FDWERPYLAGTRDFILSNTFSQIERG(MSE)TELGASGTRFEFECYDVGHLYNLAHFVDRKLVEPPFFLQCVFGILGGIG
ADPENLLH(MSE)RTIADRLFGQDYYLSVLAAGRHQ(MSE)PFVT(MSE)SAILGGNVRVGLEDSLYSGKGQLATSNAEQ
VRKIRRIIEELSLDIATPDEARA(MSE)LKTKGANETSF

GMKQSKKIIITCAVTGSIHTPTMSPYLPITPEEIVKEGVAAAEAGAAMLHLHARDPLNGRPSQDPDLFMRFLPQLKERTD
AILNITTGGGLGMSLDERLAPARAARPEVASMNMGSLNFNISQAAAKFDTFKFDWERPYLAGTRDFILSNTFSQIERGMT
ELGASGTRFEFECYDVGHLYNLAHFVDRKLVEPPFFLQCVFGILGGIGADPENLLHMRTIADRLFGQDYYLSVLAAGRHQ
MPFVTMSAILGGNVRVGLEDSLYSGKGQLATSNAEQVRKIRRIIEELSLDIATPDEARAMLKTKGANETSF

1.0000M K/Na Tartrate, 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. X-RAY FLUORESCENCE EXCITATION AND WAVELENGTH SCANS AND
ANOMALOUS DIFFERENCE FOURIERS SUPPORT THE MODELING OF ZN ION.
5. THERE ARE SOME UNINTERPRETABLE DENSITIES NEAR ZN-COORDINATING WATERS.
6. EDO MOLECULES FROM THE CRYSTALLIZATION/CRYO SOLUTION ARE MODELED.

AUTHORS STATE THAT CRYSTAL PACKING ANALYSIS SUGGESTS THE ASSIGNMENT OF A TETRAMER AS THE SIGNIFICANT OLIGOMERIZATION STATE.

STRUCTURAL GENOMICS, JOINT CENTER FOR STRUCTURAL GENOMICS, JCSG, PROTEIN STRUCTURE INITIATIVE, PSI-2, METAL BINDING PROTEIN

MKQSKKIIITCAVTGSIHTPTMSPYLPITPEEIVKEGVAAAEAGAAMLHLHARDPLNGRPSQDPDLFMRFLPQLKERTDA
ILNITTGGGLGMSLDERLAPARAARPEVASMNMGSLNFNISQAAAKFDTFKFDWERPYLAGTRDFILSNTFSQIERGMTE
LGASGTRFEFECYDVGHLYNLAHFVDRKLVEPPFFLQCVFGILGGIGADPENLLHMRTIADRLFGQDYYLSVLAAGRHQM
PFVTMSAILGGNVRVGLEDSLYSGKGQLATSNAEQVRKIRRIIEELSLDIATPDEARAMLKTKGANETSF