Crystal structure of thioesterase superfamily (YP_508616.1) from Jannaschia sp. CCS1 at 2.00 A resolution

Joint Center for Structural Genomics (JCSG)

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

G(MSE)QGAGRL(MSE)QPRPDSAFVHDVRVTWGDCDPAKIAYTGHLPRFALEAIDAWWSEYHGPGGWYHLELDTNVGTP
FVRLE(MSE)DFKSPVTPRHILKCHTWPTRLGTKSITFRVDGVQDGVTCFVGAFTCVFTIADQFKSQPAPDHLRALIEPH
IPA

GMQGAGRLMQPRPDSAFVHDVRVTWGDCDPAKIAYTGHLPRFALEAIDAWWSEYHGPGGWYHLELDTNVGTPFVRLEMDF
KSPVTPRHILKCHTWPTRLGTKSITFRVDGVQDGVTCFVGAFTCVFTIADQFKSQPAPDHLRALIEPHIPA

40.0% PEG-300, 0.1M Phosphate Citrate pH 4.2, VAPOR DIFFUSION, SITTING DROP, NANODROP, temperature 277K

SEQUENCE
THE CONSTRUCT WAS EXPRESSED WITH AN N-TERMINAL
PURIFICATION TAG MGSDKIHHHHHHENLYFQG. THE TAG WAS
REMOVED WITH TEV PROTEASE LEAVING ONLY A GLYCINE (-7),
FOLLOWED BY THE TARGET SEQUENCE. CLONING WAS BASED
ON A DRAFT ANNOTATION OF THE JANNASCHIA SP CCS1 GENOME
AND THE EXPRESSED CONSTRUCT CONTAINS 7 RESIDUES
(-6)MQGAGRL(0) AT THE N-TERMINUS NOT PRESENT IN THE
CURRENT PREDICTED GENE PRODUCT.

BIOMOLECULE: 1
THIS ENTRY CONTAINS THE CRYSTALLOGRAPHIC ASYMMETRIC UNIT
WHICH CONSISTS OF 2 CHAIN(S). SEE REMARK 350 FOR
INFORMATION ON GENERATING THE BIOLOGICAL MOLECULE(S).
SIZE EXCLUSION CHROMATOGRAPHY WITH STATIC LIGHT SCATTERING
INDICATES THAT THE TETRAMER IS A BIOLOGICALLY SIGNIFICANT
OLIGOMERIZATION STATE.

1. HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. 2. ATOM RECORD CONTAINS 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. CHLORIDE, PEG, CITRATE AND PHOSPHATE ARE MODELED BASED ON THE CRYSTALLIZATION CONDITIONS. 5. THERE ARE SOME DISORDERED DENSITIES BETWEEN RESIDUE 17 AND RESIDUE 52 FROM SYMMETRICAL RELATED DIMER (DIMER/DIMER INTERFACE). PARTS OF DENSITY ARE INTERPRETED AS PHOSPHATE AND WATER MOLECULES.

YP_508616.1, thioesterase superfamily, Structural Genomics, Joint Center for Structural Genomics, JCSG, Protein Structure Initiative, PSI-2, HYDROLASE

MQPRPDSAFVHDVRVTWGDCDPAKIAYTGHLPRFALEAIDAWWSEYHGPGGWYHLELDTNVGTPFVRLEMDFKSPVTPRH
ILKCHTWPTRLGTKSITFRVDGVQDGVTCFVGAFTCVFTIADQFKSQPAPDHLRALIEPHIPA