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(-) Description

Title :  REDUCED SWEETNESS OF A MONELLIN (MNEI) MUTANT RESULTS FROM INCREASED PROTEIN FLEXIBILITY AND DISRUPTION OF A DISTANT POLY-(L-PROLINE) II HELIX
 
Authors :  C. M. Templeton, J. R. Hobbs, S. D. Munger, G. L. Conn
Date :  20 Dec 10  (Deposition) - 06 Apr 11  (Release) - 22 Jun 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.34
Chains :  Asym. Unit :  A,B,C,D
Biol. Unit 1:  A  (1x)
Biol. Unit 2:  B  (1x)
Biol. Unit 3:  C  (1x)
Biol. Unit 4:  D  (1x)
Keywords :  Sweet Protein, Sweet Receptor, T1R2:T1R3, Plant Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  C. M. Templeton, S. Ostovar Pour, J. R. Hobbs, E. W. Blanch, S. D. Munger, G. L. Conn
Reduced Sweetness Of A Monellin (Mnei) Mutant Results From Increased Protein Flexibility And Disruption Of A Distant Poly-(L-Proline) Ii Helix.
Chem Senses V. 36 425 2011
PubMed-ID: 21343241  |  Reference-DOI: 10.1093/CHEMSE/BJR007

(-) Compounds

Molecule 1 - MONELLIN CHAIN B/MONELLIN CHAIN A CHIMERIC PROTEIN
    Chains: A, B, C, D
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PET22B
    Expression System Strain: BL21(DE3)
    Expression System Taxid: 562
    Expression System Vector Type: PLASMID
    Mutation: YES
    Organism Common: SERENDIPITY BERRY
    Organism Scientific: DIOSCOREOPHYLLUM CUMMINSII
    Organism Taxid: 3457
    Synonym: MONELLIN CHAIN II, MONELLIN CHAIN I

 Structural Features

(-) Chains, Units

  1234
Asymmetric Unit : ABCD
Biological Unit 1 (1x): A   
Biological Unit 2 (1x):  B  
Biological Unit 3 (1x):   C 
Biological Unit 4 (1x):    D

Summary Information (see also Sequences/Alignments below)

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

Asymmetric Unit (1, 1)
No.NameCountTypeFull Name
1NA1Ligand/IonSODIUM ION
Biological Unit 1 (0, 0)
No.NameCountTypeFull Name
1NA-1Ligand/IonSODIUM ION
Biological Unit 2 (0, 0)
No.NameCountTypeFull Name
1NA-1Ligand/IonSODIUM ION
Biological Unit 3 (0, 0)
No.NameCountTypeFull Name
1NA-1Ligand/IonSODIUM ION
Biological Unit 4 (0, 0)
No.NameCountTypeFull Name
1NA-1Ligand/IonSODIUM ION

(-) Sites  (0, 0)

(no "Site" information available for 3Q2P)

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 3Q2P)

(-) Cis Peptide Bonds  (9, 9)

Asymmetric Unit
No.Residues
1Arg A:39 -Pro A:40
2Gly A:91 -Pro A:92
3Arg B:39 -Pro B:40
4Gly B:91 -Pro B:92
5Arg C:39 -Pro C:40
6Phe C:52 -Arg C:53
7Gly C:91 -Pro C:92
8Arg D:39 -Pro D:40
9Gly D:91 -Pro D:92

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 3Q2P)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 3Q2P)

(-) Exons   (0, 0)

(no "Exon" information available for 3Q2P)

(-) Sequences/Alignments

Asymmetric 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:96
 aligned with MONA_DIOCU | P02881 from UniProtKB/Swiss-Prot  Length:45

    Alignment length:96
                                                                               1                                            
                                     -         -         -         -         - |       9        19        29        39      
            MONA_DIOCU    - ---------------------------------------------------FREIKGYEYQLYVYASDKLFRADISEDYKTRGRKLLRFNGPVPPP 45
               SCOP domains d3q2pa_ A: automated matches                                                                     SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------ CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author .eeeee..hhhhhhhhhhhhhhhhhhh......eeeeeeeeeeeeee.......eeeeeeeeeeee..eeeeeeeeee.....eeeeeee...... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------ Transcript
                  3q2p A  1 GEWEIIDIGPFTQNLAKFAVDEENKIGQYGRLTFNKAIRPCMKKTIYENEGFREIKGYEYQLYVYASDKLFRADISEDYKTRGRKLLRFNGPVPPP 96
                                    10        20        30        40        50        60        70        80        90      


Chain A from PDB  Type:PROTEIN  Length:96
 aligned with MONB_DIOCU | P02882 from UniProtKB/Swiss-Prot  Length:50

    Alignment length:96
                                                                            50                                              
                                    10        20        30        40        50         -         -         -         -      
            MONB_DIOCU    1 GEWEIIDIGPFTQNLGKFAVDEENKIGQYGRLTFNKVIRPCMKKTIYEEN----------------------------------------------  -
               SCOP domains d3q2pa_ A: automated matches                                                                     SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------ CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author .eeeee..hhhhhhhhhhhhhhhhhhh......eeeeeeeeeeeeee.......eeeeeeeeeeee..eeeeeeeeee.....eeeeeee...... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------ Transcript
                  3q2p A  1 GEWEIIDIGPFTQNLAKFAVDEENKIGQYGRLTFNKAIRPCMKKTIYENEGFREIKGYEYQLYVYASDKLFRADISEDYKTRGRKLLRFNGPVPPP 96
                                    10        20        30        40        50        60        70        80        90      


Chain B from PDB  Type:PROTEIN  Length:97
 aligned with MONA_DIOCU | P02881 from UniProtKB/Swiss-Prot  Length:45

    Alignment length:97
                                                                                1                                            
                                     -         -         -         -         -  |      8        18        28        38       
            MONA_DIOCU    - ----------------------------------------------------FREIKGYEYQLYVYASDKLFRADISEDYKTRGRKLLRFNGPVPPP 45
               SCOP domains d3q2pb_ B: automated matches                                                                      SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeeee..hhhhhhhhhhhhhhhhhhh......eeeeeeeeeeeeee.......eeeeeeeeeeee..eeeeeeeeee.....eeeeeee...... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------- Transcript
                  3q2p B  0 MGEWEIIDIGPFTQNLAKFAVDEENKIGQYGRLTFNKAIRPCMKKTIYENEGFREIKGYEYQLYVYASDKLFRADISEDYKTRGRKLLRFNGPVPPP 96
                                     9        19        29        39        49        59        69        79        89       


Chain B from PDB  Type:PROTEIN  Length:97
 aligned with MONB_DIOCU | P02882 from UniProtKB/Swiss-Prot  Length:50

    Alignment length:97
                             1                                               50                                              
                             |       9        19        29        39        49|        -         -         -         -       
            MONB_DIOCU    - -GEWEIIDIGPFTQNLGKFAVDEENKIGQYGRLTFNKVIRPCMKKTIYEEN----------------------------------------------  -
               SCOP domains d3q2pb_ B: automated matches                                                                      SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeeee..hhhhhhhhhhhhhhhhhhh......eeeeeeeeeeeeee.......eeeeeeeeeeee..eeeeeeeeee.....eeeeeee...... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------- Transcript
                  3q2p B  0 MGEWEIIDIGPFTQNLAKFAVDEENKIGQYGRLTFNKAIRPCMKKTIYENEGFREIKGYEYQLYVYASDKLFRADISEDYKTRGRKLLRFNGPVPPP 96
                                     9        19        29        39        49        59        69        79        89       


Chain C from PDB  Type:PROTEIN  Length:96
 aligned with MONA_DIOCU | P02881 from UniProtKB/Swiss-Prot  Length:45

    Alignment length:96
                                                                               1                                            
                                     -         -         -         -         - |       9        19        29        39      
            MONA_DIOCU    - ---------------------------------------------------FREIKGYEYQLYVYASDKLFRADISEDYKTRGRKLLRFNGPVPPP 45
               SCOP domains d3q2pc_ C: automated matches                                                                     SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------ CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ..eeee..hhhhhhhhhhhhhhhhhhh......eeeeeeeeeeeeee.......eeeeeeeeeeee...eeeeeeeee.....eeeeeee...... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------ Transcript
                  3q2p C  1 GEWEIIDIGPFTQNLAKFAVDEENKIGQYGRLTFNKAIRPCMKKTIYENEGFREIKGYEYQLYVYASDKLFRADISEDYKTRGRKLLRFNGPVPPP 96
                                    10        20        30        40        50        60        70        80        90      


Chain C from PDB  Type:PROTEIN  Length:96
 aligned with MONB_DIOCU | P02882 from UniProtKB/Swiss-Prot  Length:50

    Alignment length:96
                                                                            50                                              
                                    10        20        30        40        50         -         -         -         -      
            MONB_DIOCU    1 GEWEIIDIGPFTQNLGKFAVDEENKIGQYGRLTFNKVIRPCMKKTIYEEN----------------------------------------------  -
               SCOP domains d3q2pc_ C: automated matches                                                                     SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------ CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ..eeee..hhhhhhhhhhhhhhhhhhh......eeeeeeeeeeeeee.......eeeeeeeeeeee...eeeeeeeee.....eeeeeee...... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------ Transcript
                  3q2p C  1 GEWEIIDIGPFTQNLAKFAVDEENKIGQYGRLTFNKAIRPCMKKTIYENEGFREIKGYEYQLYVYASDKLFRADISEDYKTRGRKLLRFNGPVPPP 96
                                    10        20        30        40        50        60        70        80        90      


Chain D from PDB  Type:PROTEIN  Length:96
 aligned with MONA_DIOCU | P02881 from UniProtKB/Swiss-Prot  Length:45

    Alignment length:96
                                                                               1                                            
                                     -         -         -         -         - |       9        19        29        39      
            MONA_DIOCU    - ---------------------------------------------------FREIKGYEYQLYVYASDKLFRADISEDYKTRGRKLLRFNGPVPPP 45
               SCOP domains d3q2pd_ D: automated matches                                                                     SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------ CATH domains
           Pfam domains (1) Monellin-3q2pD05 D:1-40                 ------------Monellin-3q2pD01 D:53-95                   - Pfam domains (1)
           Pfam domains (2) Monellin-3q2pD06 D:1-40                 ------------Monellin-3q2pD02 D:53-95                   - Pfam domains (2)
           Pfam domains (3) Monellin-3q2pD07 D:1-40                 ------------Monellin-3q2pD03 D:53-95                   - Pfam domains (3)
           Pfam domains (4) Monellin-3q2pD08 D:1-40                 ------------Monellin-3q2pD04 D:53-95                   - Pfam domains (4)
         Sec.struct. author .eeeee..hhhhhhhhhhhhhhhhhhh......eeeeeeeeeeeeee.......eeeeeeeeeeee..eeeeeeeeee.....eeeeeee...... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------ Transcript
                  3q2p D  1 GEWEIIDIGPFTQNLAKFAVDEENKIGQYGRLTFNKAIRPCMKKTIYENEGFREIKGYEYQLYVYASDKLFRADISEDYKTRGRKLLRFNGPVPPP 96
                                    10        20        30        40        50        60        70        80        90      


Chain D from PDB  Type:PROTEIN  Length:96
 aligned with MONB_DIOCU | P02882 from UniProtKB/Swiss-Prot  Length:50

    Alignment length:96
                                                                            50                                              
                                    10        20        30        40        50         -         -         -         -      
            MONB_DIOCU    1 GEWEIIDIGPFTQNLGKFAVDEENKIGQYGRLTFNKVIRPCMKKTIYEEN----------------------------------------------  -
               SCOP domains d3q2pd_ D: automated matches                                                                     SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------ CATH domains
           Pfam domains (1) Monellin-3q2pD05 D:1-40                 ------------Monellin-3q2pD01 D:53-95                   - Pfam domains (1)
           Pfam domains (2) Monellin-3q2pD06 D:1-40                 ------------Monellin-3q2pD02 D:53-95                   - Pfam domains (2)
           Pfam domains (3) Monellin-3q2pD07 D:1-40                 ------------Monellin-3q2pD03 D:53-95                   - Pfam domains (3)
           Pfam domains (4) Monellin-3q2pD08 D:1-40                 ------------Monellin-3q2pD04 D:53-95                   - Pfam domains (4)
         Sec.struct. author .eeeee..hhhhhhhhhhhhhhhhhhh......eeeeeeeeeeeeee.......eeeeeeeeeeee..eeeeeeeeee.....eeeeeee...... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------ Transcript
                  3q2p D  1 GEWEIIDIGPFTQNLAKFAVDEENKIGQYGRLTFNKAIRPCMKKTIYENEGFREIKGYEYQLYVYASDKLFRADISEDYKTRGRKLLRFNGPVPPP 96
                                    10        20        30        40        50        60        70        80        90
   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  (1, 4)

Asymmetric Unit
(-)
Class: Alpha and beta proteins (a+b) (23004)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3Q2P)

(-) Pfam Domains  (1, 8)

Asymmetric Unit
(-)
Clan: no clan defined [family: Monellin] (7)

(-) Gene Ontology  (0, 0)

Asymmetric Unit(hide GO term definitions)
    (no "Gene Ontology" information available for 3Q2P)

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  Cis Peptide Bonds
    Arg A:39 - Pro A:40   [ RasMol ]  
    Arg B:39 - Pro B:40   [ RasMol ]  
    Arg C:39 - Pro C:40   [ RasMol ]  
    Arg D:39 - Pro D:40   [ RasMol ]  
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  3q2p
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 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
        MONA_DIOCU | P02881: 1fa3 1fuw 1iv7 1iv9 1krl 1m9g 1mnl 2gpk 2o9u 3mon 3pxm 3pyj 4mon 5lc6 5lc7
        MONB_DIOCU | P02882: 1fa3 1fuw 1iv7 1iv9 1krl 1m9g 1mnl 1mol 2o9u 3mon 3pxm 3pyj 4mon 5lc6 5lc7

(-) Related Entries Specified in the PDB File

2o9u WILD-TYPE MNEI
3pxm MNEI-V37A SINGLE MUTANT
3pyj MNEI-G16A SINGLE MUTANT