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(-) Description

Title :  STRUCTURE OF THE PERIPLASMIC STRESS RESPONSE PROTEIN CPXP
 
Authors :  G. L. Thede, R. A. Edwards, J. N. M. Glover
Date :  04 Mar 11  (Deposition) - 23 Mar 11  (Release) - 11 May 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.85
Chains :  Asym./Biol. Unit :  A,B
Keywords :  Alpha-Helical Hairpin, Ltxxq Motif, Stress Response Regulator, Signaling Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  G. L. Thede, D. C. Arthur, R. A. Edwards, D. R. Buelow, J. L. Wong, T. L. Raivio, J. N. Glover
Structure Of The Periplasmic Stress Response Protein Cpxp.
J. Bacteriol. V. 193 2149 2011
PubMed-ID: 21317318  |  Reference-DOI: 10.1128/JB.01296-10

(-) Compounds

Molecule 1 - PERIPLASMIC PROTEIN CPXP
    Chains: A, B
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PGEX-6P-1
    Expression System Strain: BL21(DE3)
    Expression System Taxid: 469008
    Expression System Vector Type: PLASMID
    Fragment: UNP RESIDUES 40-151
    Gene: B4484, CPXP, JW5558, YIIO
    Organism Scientific: ESCHERICHIA COLI
    Organism Taxid: 83333
    Strain: K12

 Structural Features

(-) Chains, Units

  12
Asymmetric/Biological Unit : AB

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 9)

Asymmetric/Biological Unit (1, 9)
No.NameCountTypeFull Name
1ZN9Ligand/IonZINC ION

(-) Sites  (9, 9)

Asymmetric Unit (9, 9)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREHIS A:136 , HOH B:7 , GLU B:79 , ARG B:83 , GLU B:134BINDING SITE FOR RESIDUE ZN A 2
2AC2SOFTWAREGLU A:77 , LYS A:101 , GLU A:105 , GLU B:100BINDING SITE FOR RESIDUE ZN A 3
3AC3SOFTWAREHOH A:12 , GLU A:69 , GLU A:112 , GLU B:92BINDING SITE FOR RESIDUE ZN A 4
4AC4SOFTWAREHOH A:6 , HIS A:82 , HOH A:154 , HOH B:5BINDING SITE FOR RESIDUE ZN A 5
5AC5SOFTWAREHOH A:8 , GLU A:53 , ARG A:60 , HIS A:68 , LYS B:151BINDING SITE FOR RESIDUE ZN A 7
6AC6SOFTWAREHOH A:1 , HOH A:152 , HOH A:153 , HIS B:82BINDING SITE FOR RESIDUE ZN B 1
7AC7SOFTWAREGLU A:141 , HOH B:11 , GLU B:141 , ASP B:145BINDING SITE FOR RESIDUE ZN B 6
8AC8SOFTWAREGLU A:79 , HIS B:136BINDING SITE FOR RESIDUE ZN B 8
9AC9SOFTWAREHOH B:13 , HOH B:14 , GLU B:77 , GLU B:105BINDING SITE FOR RESIDUE ZN B 9

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 3QZC)

(-) Cis Peptide Bonds  (5, 5)

Asymmetric/Biological Unit
No.Residues
1Ser A:50 -Leu A:51
2Trp A:149 -Gln A:150
3Ser B:43 -His B:44
4Ser B:50 -Leu B:51
5Asp B:61 -Leu B:62

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 3QZC)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 3QZC)

(-) Exons   (0, 0)

(no "Exon" information available for 3QZC)

(-) 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
(details for a mapped element are shown in a popup box when the mouse pointer rests over it) 
Chain A from PDB  Type:PROTEIN  Length:108
 aligned with CPXP_ECOLI | P0AE85 from UniProtKB/Swiss-Prot  Length:166

    Alignment length:108
                                    53        63        73        83        93       103       113       123       133       143        
           CPXP_ECOLI    44 HMFDGISLTEHQRQQMRDLMQQARHEQPPVNVSELETMHRLVTAENFDENAVRAQAEKMANEQIARQVEMAKVRNQMYRLLTPEQQAVLNEKHQQRMEQLRDVTQWQK 151
               SCOP domains ------------------------------------------------------------------------------------------------------------ SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------ CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ........hhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------ Transcript
                 3qzc A  44 HMFDGISLTEHQRQQMRDLMQQARHEQPPVNVSELETMHRLVTAENFDENAVRAQAEKMANEQIARQVEMAKVRNQMYRLLTPEQQAVLNEKHQQRMEQLRDVTQWQK 151
                                    53        63        73        83        93       103       113       123       133       143        


Chain B from PDB  Type:PROTEIN  Length:112
 aligned with CPXP_ECOLI | P0AE85 from UniProtKB/Swiss-Prot  Length:166

    Alignment length:112
                                    49        59        69        79        89        99       109       119       129       139       149  
           CPXP_ECOLI    40 STQSHMFDGISLTEHQRQQMRDLMQQARHEQPPVNVSELETMHRLVTAENFDENAVRAQAEKMANEQIARQVEMAKVRNQMYRLLTPEQQAVLNEKHQQRMEQLRDVTQWQK 151
               SCOP domains ---------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------------------------- CATH domains
           Pfam domains (1) LTXXQ-3qzcB01 B:40-136                                                                           --------------- Pfam domains (1)
           Pfam domains (2) LTXXQ-3qzcB02 B:40-136                                                                           --------------- Pfam domains (2)
         Sec.struct. author ............hhhhhhhhhh............hhhhhhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------- Transcript
                 3qzc B  40 STQSHMFDGISLTEHQRQQMRDLMQQARHEQPPVNVSELETMHRLVTAENFDENAVRAQAEKMANEQIARQVEMAKVRNQMYRLLTPEQQAVLNEKHQQRMEQLRDVTQWQK 151
                                    49        59        69        79        89        99       109       119       129       139       149
   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
    → Modified Residue (blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
  x → Chemical Group (purple background, 'x', labelled with number + name, e.g. ACE or NH2)
  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (0, 0)

(no "SCOP Domain" information available for 3QZC)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3QZC)

(-) Pfam Domains  (1, 2)

Asymmetric/Biological Unit
(-)
Clan: LTXXQ-like (2)

(-) Gene Ontology  (5, 5)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A,B   (CPXP_ECOLI | P0AE85)
molecular function
    GO:0042802    identical protein binding    Interacting selectively and non-covalently with an identical protein or proteins.
    GO:0051082    unfolded protein binding    Interacting selectively and non-covalently with an unfolded protein.
biological process
    GO:0045892    negative regulation of transcription, DNA-templated    Any process that stops, prevents, or reduces the frequency, rate or extent of cellular DNA-templated transcription.
cellular component
    GO:0030288    outer membrane-bounded periplasmic space    The region between the inner (cytoplasmic or plasma) membrane and outer membrane of organisms with two membranes such as Gram negative bacteria. These periplasmic spaces are relatively thick and contain a thin peptidoglycan layer (PGL), also referred to as a thin cell wall.
    GO:0042597    periplasmic space    The region between the inner (cytoplasmic) and outer membrane (Gram-negative Bacteria) or cytoplasmic membrane and cell wall (Fungi and Gram-positive Bacteria).

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 Related Entries

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        CPXP_ECOLI | P0AE85: 3itf

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