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Title :   THE CRYSTAL STRUCTURE OF ENTEROTOXIGENIC ESCHERICHIA COLI GSPC-GSPD COMPLEX FROM THE TYPE II SECRETION SYSTEM

Authors :   K. V. Korotkov, J. Pruneda, W. G. J. Hol

Date :   09 Sep 10 (Deposition) - 03 Aug 11 (Release) - 02 Nov 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.63

Chains :   Asym./Biol. Unit : C,D

Keywords :   General Secretory Pathway, Hr Domain, Secretin, Lanthanide-Binding Tag, Protein Transport (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   K. V. Korotkov, T. L. Johnson, M. G. Jobling, J. Pruneda, E. Pardon, A. Heroux, S. Turley, J. Steyaert, R. K. Holmes, M. Sandkvist, W. G. Hol
Structural And Functional Studies On The Interaction Of Gsp And Gspd In The Type Ii Secretion System.
Plos Pathog. V. 7 02228 2011
PubMed-ID: 21931548 | Reference-DOI: 10.1371/JOURNAL.PPAT.1002228

Compounds

Molecule 1 - TYPE 2 SECRETION SYSTEM, GSPC
	Chains	:	C
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PCDF-NT
	Expression System Strain	:	BL21(DE3)
	Expression System Taxid	:	469008
	Expression System Vector Type	:	PLASMID
	Fragment	:	HR DOMAIN, RESIDUES 122-186
	Gene	:	GSPC
	Organism Scientific	:	ESCHERICHIA COLI
	Organism Taxid	:	316401
	Strain	:	H10407

Molecule 2 - TYPE 2 SECRETION SYSTEM, SECRETIN GSPD
	Chains	:	D
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PCDF-NT
	Expression System Strain	:	BL21(DE3)
	Expression System Taxid	:	469008
	Expression System Vector Type	:	PLASMID
	Fragment	:	N0 AND N1 DOMAINS, RESIDUES 1-165
	Gene	:	GSPD
	Organism Scientific	:	ESCHERICHIA COLI
	Organism Taxid	:	316401
	Strain	:	H10407

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (2, 2)

Sites (2, 2)

SS Bonds (0, 0)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (0, 0)

Exons (0, 0)

Sequences/Alignments

Asymmetric/Biological Unit

Reformat:	Number of residues per line = ('0' or empty: single-line sequence representation)
	Number of residues per labelling interval =
	UniProt sequence: complete aligned part

Show mapping:	SCOP domains	CATH domains	Pfam domains	Secondary structure (by author)
	SAPs(SNPs)	PROSITE motifs	Exons
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Chain C from PDB  Type:PROTEIN  Length:65
 aligned with E3PJ87_ECOH1 | E3PJ87 from UniProtKB/TrEMBL  Length:276

    Alignment length:65
                                    88        98       108       118       128       138     
         E3PJ87_ECOH1    79 ETRLNVVLRGIAFGARPGAVIEEGGKQQVYLQGERLDSHNAVIEEINRDHVMLRYQGKIERLSLA 143
               SCOP domains ----------------------------------------------------------------- SCOP domains
               CATH domains ----------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------- Pfam domains
         Sec.struct. author ......eeeeeee....eeeeee..eeeee..........eeeeee...eeeeee..eeeeee.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------- Transcript
                 3oss C 122 ETRLNVVLRGIAFGARPGAVIEEGGKQQVYLQGERLDSHNAVIEEINRDHVMLRYQGKIERLSLA 186
                                   131       141       151       161       171       181

Chain D from PDB  Type:PROTEIN  Length:157
 aligned with E3PJ86_ECOH1 | E3PJ86 from UniProtKB/TrEMBL  Length:686

    Alignment length:163
                                    52        62        72        82        92       102       112       122       132       142       152       162       172       182       192       202   
         E3PJ86_ECOH1    43 ATFTANFKDTDLKSFIETVGANLNKTIIMGPGVQGKVSIRTMTPLNERQYYQLFLNLLEAQGYAVVPMENDVLKVVKSSAAKVEPLPLVGEGSDNYAGDEMVTKVVPVRNVSVRELAPILRQMIDSAGSGNVVNYDPSNVIMLTGRASVVERLTEVIQRVDHA 205
               SCOP domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeeeeeeeehhhhhhhhhhhhh..eee......eeeeee...eehhhhhhhhhhhhhhh.eeeeee---e.........hhh.e-eeeeee.--....eeeeeee....hhhhhhhhhhhhhhhhh...eeeee...eeeeeeehhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3oss D   3 ATFTANFKDTDLKSFIETVGANLNKTIIMGPGVQGKVSIRTMTPLNERQYYQLFLNLLEAQGYAVVPM---YIDTNNDGYIEGDEL-VLKVVKS--AGDEMVTKVVPVRNVSVRELAPILRQMIDSAGSGNVVNYDPSNVIMLTGRASVVERLTEVIQRVDHA 165
                                    12        22        32        42        52        62       | - |     707     | |76   |  |102       112       122       132       142       152       162   
                                                                                              70 699           713 |    80 99                                                                  
                                                                                                                  74

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Classification and Annotation

SCOP Domains (0, 0)

CATH Domains (0, 0)

Pfam Domains (0, 0)

Gene Ontology (7, 10)

Asymmetric/Biological Unit(hide GO term definitions)

Chain C (E3PJ87_ECOH1 | E3PJ87)

molecular function
	GO:0008565	protein transporter activity	Enables the directed movement of proteins into, out of or within a cell, or between cells.
biological process
	GO:0015628	protein secretion by the type II secretion system	The process in which proteins are secreted across the outer membrane of Gram-negative bacteria by the type II secretion system. Proteins using this pathway are first translocated across the cytoplasmic membrane via the Sec or Tat pathways.
cellular component
	GO:0015627	type II protein secretion system complex	A large protein complex, containing 12-15 subunits, that spans the cell envelope of Gram-negative bacteria and mediates the movement of proteins into the extracellular environment. The complex includes a component in the cytoplasm, an inner membrane subcomplex that reaches into the periplasmic compartment and a secretion pore in the outer membrane. Proteins using the Type II pathway are transported across the cytoplasmic membrane by the Sec or Tat complex.

Chain D (E3PJ86_ECOH1 | E3PJ86)

molecular function
	GO:0008565	protein transporter activity	Enables the directed movement of proteins into, out of or within a cell, or between cells.
biological process
	GO:0009306	protein secretion	The controlled release of proteins from a cell.
	GO:0015628	protein secretion by the type II secretion system	The process in which proteins are secreted across the outer membrane of Gram-negative bacteria by the type II secretion system. Proteins using this pathway are first translocated across the cytoplasmic membrane via the Sec or Tat pathways.
	GO:0006810	transport	The directed movement of substances (such as macromolecules, small molecules, ions) or cellular components (such as complexes and organelles) into, out of or within a cell, or between cells, or within a multicellular organism by means of some agent such as a transporter, pore or motor protein.
cellular component
	GO:0009279	cell outer membrane	A lipid bilayer that forms the outermost membrane of the cell envelope; enriched in polysaccharide and protein; the outer leaflet of the membrane contains specific lipopolysaccharide structures.
	GO:0019867	outer membrane	The external membrane of Gram-negative bacteria or certain organelles such as mitochondria and chloroplasts; freely permeable to most ions and metabolites.
	GO:0015627	type II protein secretion system complex	A large protein complex, containing 12-15 subunits, that spans the cell envelope of Gram-negative bacteria and mediates the movement of proteins into the extracellular environment. The complex includes a component in the cytoplasm, an inner membrane subcomplex that reaches into the periplasmic compartment and a secretion pore in the outer membrane. Proteins using the Type II pathway are transported across the cytoplasmic membrane by the Sec or Tat complex.

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