Crystal structure of Oligopeptide ABC transporter, periplasmic oligopeptide-binding (TM1223) from THERMOTOGA MARITIMA at 1.73 A resolution

Joint Center for Structural Genomics (JCSG)

4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID

oligopeptide ABC transporter, periplasmic oligopeptide-binding protein

(MSE)GSDKIHHHHHHERNKTLYWGGALWSPPSNWNPFTPWNAVAGTIGLVYEPLFLYDPLNDKFEPWLAEKGEWVSNNE
YVLTLRKGLRWQDGVPLTADDVVFTFEIAKKYTGISYSPVWNWLGRIERVDERTLKFVFSDPRYQEWKQ(MSE)LINTPI
VPKHIWENKTEEEVLQAANENPVGSGPYYVESWADDRCVFKKNGNWWGIRELGYDPKPERIVELRVLSNNVAVG(MSE)L
(MSE)KGELDWSNFFLPGVPVLKKAYGIVTWYENAPY(MSE)LPANTAGIYINVNKYPLSIPEFRRA(MSE)AYAINPEK
IVTRAYEN(MSE)VTAANPAGILPLPGY(MSE)KYYPKEVVDKYGFKYDPE(MSE)AKKILDELGFKDVNKDGFREDPNG
KPFKLTIECPYGWTDW(MSE)VSIQSIAEDLVKVGINVEPKYPDYSKYADDLYGGKFDLILNNFTTGVSATIWSYFNGVF
YPDAVESEYSYSGNFGKYANPEVETLLDELNRSNDDAKIKEVVAKLSEILLKDLPFIPLWYNGAWFQASEAVWTNWPTEK
NPYAVPIGWNGWWQLTGIKTLFGIEAK

MGSDKIHHHHHHERNKTLYWGGALWSPPSNWNPFTPWNAVAGTIGLVYEPLFLYDPLNDKFEPWLAEKGEWVSNNEYVLT
LRKGLRWQDGVPLTADDVVFTFEIAKKYTGISYSPVWNWLGRIERVDERTLKFVFSDPRYQEWKQMLINTPIVPKHIWEN
KTEEEVLQAANENPVGSGPYYVESWADDRCVFKKNGNWWGIRELGYDPKPERIVELRVLSNNVAVGMLMKGELDWSNFFL
PGVPVLKKAYGIVTWYENAPYMLPANTAGIYINVNKYPLSIPEFRRAMAYAINPEKIVTRAYENMVTAANPAGILPLPGY
MKYYPKEVVDKYGFKYDPEMAKKILDELGFKDVNKDGFREDPNGKPFKLTIECPYGWTDWMVSIQSIAEDLVKVGINVEP
KYPDYSKYADDLYGGKFDLILNNFTTGVSATIWSYFNGVFYPDAVESEYSYSGNFGKYANPEVETLLDELNRSNDDAKIK
EVVAKLSEILLKDLPFIPLWYNGAWFQASEAVWTNWPTEKNPYAVPIGWNGWWQLTGIKTLFGIEAK

1.0M LiCl, 10.0% PEG-6000, 0.1M HEPES pH 7.0, VAPOR DIFFUSION,SITTING DROP,NANODROP, temperature 277K

SEQUENCE
THE CONSTRUCT EXPRESSED COMPRISED AN N-TERMINAL
PURIFICATION TAG [MGSDKIHHHHHHM] FOLLOWED BY
RESIDUES 23-557 OF THE PREDICTED TM1223 GENE
PRODUCT. IN ORDER TO REMOVE A PREDICTED
TRANSMEMBRANE HELIX, THE FIRST 22 RESIDUES
WERE NOT INCLUDED IN THE CONSTRUCT.

1. HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS 2. THERE ARE LOTS OF NON-WATER DENSITY IN THE SOLVENT REGION. THEY ARE MODELLED AS BUFFER OR CRYO PROTECTANT MOLECULES. HOWEVER, FOR MANY OF MOLECULES, THE DENSITIES ARE NOT WELL DEFINED. 3. RESIDUES ASP 362, ASP 366 AND GLU 370 MIGHT BE INVOLVED IN METAL BINDING. A SODIUM WAS TENATIVELY MODELED.

TM1223, OLIGOPEPTIDE ABC TRANSPORTER, PERIPLASMIC OLIGOPEPTIDE-BINDING, Structural Genomics, Joint Center for Structural Genomics, JCSG, Protein Structure Initiative, PSI, PROTEIN TRANSPORT

ERNKTLYWGGALWSPPSNWNPFTPWNAVAGTIGLVYEPLFLYDPLNDKFEPWLAEKGEWVSNNEYVLTLRKGLRWQDGVP
LTADDVVFTFEIAKKYTGISYSPVWNWLGRIERVDERTLKFVFSDPRYQEWKQMLINTPIVPKHIWENKTEEEVLQAANE
NPVGSGPYYVESWADDRCVFKKNGNWWGIRELGYDPKPERIVELRVLSNNVAVGMLMKGELDWSNFFLPGVPVLKKAYGI
VTWYENAPYMLPANTAGIYINVNKYPLSIPEFRRAMAYAINPEKIVTRAYENMVTAANPAGILPLPGYMKYYPKEVVDKY
GFKYDPEMAKKILDELGFKDVNKDGFREDPNGKPFKLTIECPYGWTDWMVSIQSIAEDLVKVGINVEPKYPDYSKYADDL
YGGKFDLILNNFTTGVSATIWSYFNGVFYPDAVESEYSYSGNFGKYANPEVETLLDELNRSNDDAKIKEVVAKLSEILLK
DLPFIPLWYNGAWFQASEAVWTNWPTEKNPYAVPIGWNGWWQLTGIKTLFGIEAK