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(-) Description

Title :  STRUCTURE OF IODINATED CBM25 FROM BACILLUS HALODURANS AMYLASE IN COMPLEX WITH MALTOTETRAOSE
 
Authors :  A. B. Boraston, M. Healey, J. Klassen, E. Ficko-Blean, A. Lammerts Van Bueren, V. Law
Date :  12 Oct 05  (Deposition) - 17 Oct 05  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.70
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A  (1x)
Biol. Unit 2:  B  (1x)
Keywords :  Carbohydrate-Binding Module, Starch Binding, Carbohydrate Binding, Glycoside Hydrolase, Amylose, Amylopectin, Malto-Oligosaccharide, Carbohydrate- Binding Module (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  A. B. Boraston, M. Healey, J. Klassen, E. Ficko-Blean, A. Lammerts Van Bueren, V. Law
A Structural And Functional Analysis Of Alpha- Glucan Recognition By Family 25 And 26 Carbohydrate-Binding Modules Reveals A Conserved Mode Of Starch Recognition
J. Biol. Chem. V. 281 587 2006
PubMed-ID: 16230347  |  Reference-DOI: 10.1074/JBC.M509958200

(-) Compounds

Molecule 1 - ALPHA-AMYLASE G-6
    Atcc: BAA-125
    Chains: A, B
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PET-BHCBM6
    Expression System Strain: BL21(DE3)
    Expression System Taxid: 469008
    Expression System Vector: PET 28A
    Fragment: CARBOHYDRATE-BINDING MODULE, RESIDUES 863-958
    Organism Scientific: BACILLUS HALODURANS
    Organism Taxid: 272558
    Strain: C-125
    Synonym: FAMILY 25 CARBOHYDRATE-BINDING MODULE

 Structural Features

(-) Chains, Units

  12
Asymmetric Unit : AB
Biological Unit 1 (1x): A 
Biological Unit 2 (1x):  B

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (2, 6)

Asymmetric Unit (2, 6)
No.NameCountTypeFull Name
1GLC5Ligand/IonALPHA-D-GLUCOSE
2SO41Ligand/IonSULFATE ION
Biological Unit 1 (2, 6)
No.NameCountTypeFull Name
1GLC5Ligand/IonALPHA-D-GLUCOSE
2SO41Ligand/IonSULFATE ION
Biological Unit 2 (0, 0)
No.NameCountTypeFull Name
1GLC-1Ligand/IonALPHA-D-GLUCOSE
2SO4-1Ligand/IonSULFATE ION

(-) Sites  (6, 6)

Asymmetric Unit (6, 6)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREGLC A:1102 , HOH A:2063 , LEU B:37 , TRP B:74 , ASN B:76BINDING SITE FOR RESIDUE GLC A1101
2AC2SOFTWAREGLC A:1101 , GLC A:1103 , HIS B:26 , ASP B:81BINDING SITE FOR RESIDUE GLC A1102
3AC3SOFTWARETRP A:74 , ASN A:76 , GLC A:1102 , GLC A:1104 , HOH A:2067BINDING SITE FOR RESIDUE GLC A1103
4AC4SOFTWAREHIS A:26 , TRP A:34 , ASP A:81 , GLC A:1103 , GLC A:1105 , HOH A:2068BINDING SITE FOR RESIDUE GLC A1104
5AC5SOFTWAREGLC A:1104BINDING SITE FOR RESIDUE GLC A1105
6AC6SOFTWAREASN A:30 , ALA A:57 , GLU A:58 , SER A:61 , VAL B:88 , THR B:100BINDING SITE FOR RESIDUE SO4 A1106

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 2C3X)

(-) Cis Peptide Bonds  (2, 2)

Asymmetric Unit
No.Residues
1Leu A:37 -Pro A:38
2Leu B:37 -Pro B:38

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2C3X)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 2C3X)

(-) Exons   (0, 0)

(no "Exon" information available for 2C3X)

(-) 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:93
 aligned with Q9KFR4_BACHD | Q9KFR4 from UniProtKB/TrEMBL  Length:958

    Alignment length:93
                                   875       885       895       905       915       925       935       945       955   
         Q9KFR4_BACHD   866 TDITIYYKTGWTHPHIHYSLNQGAWTTLPGVPLTKSEYEGYVKVTIEAEEGSQLRAAFNNGSGQWDNNQGRDYDFSSGVHTLADGRILSGTPK 958
               SCOP domains --------------------------------------------------------------------------------------------- SCOP domains
               CATH domains --------------------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..eeeeee......eeeeee..........ee.ee.....eeeeee......eeeeeee.....ee......eeee.eeeeee..eeee.... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------- Transcript
                 2c3x A  10 TDITIYYKTGWTHPHIHYSLNQGAWTTLPGVPLTKSEYEGYVKVTIEAEEGSQLRAAFNNGSGQWDNNQGRDYDFSSGVHTLADGRILSGTPK 102
                                    19        29        39        49        59        69        79        89        99   


Chain B from PDB  Type:PROTEIN  Length:94
 aligned with Q9KFR4_BACHD | Q9KFR4 from UniProtKB/TrEMBL  Length:958

    Alignment length:94
                                   874       884       894       904       914       924       934       944       954    
         Q9KFR4_BACHD   865 ATDITIYYKTGWTHPHIHYSLNQGAWTTLPGVPLTKSEYEGYVKVTIEAEEGSQLRAAFNNGSGQWDNNQGRDYDFSSGVHTLADGRILSGTPK 958
               SCOP domains ---------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...eeeeee......eeeeee..........ee.ee.....eeeeee......eeeeeee.....ee......eeee.eeeeee..eeee.... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------- Transcript
                 2c3x B   9 ATDITIYYKTGWTHPHIHYSLNQGAWTTLPGVPLTKSEYEGYVKVTIEAEEGSQLRAAFNNGSGQWDNNQGRDYDFSSGVHTLADGRILSGTPK 102
                                    18        28        38        48        58        68        78        88        98
   Legend:   → Mismatch (orange background)
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  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 2C3X)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 2C3X)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 2C3X)

(-) Gene Ontology  (3, 3)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (Q9KFR4_BACHD | Q9KFR4)
molecular function
    GO:0003824    catalytic activity    Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic.
    GO:2001070    starch binding    Interacting selectively and non-covalently with starch.
biological process
    GO:0005975    carbohydrate metabolic process    The chemical reactions and pathways involving carbohydrates, any of a group of organic compounds based of the general formula Cx(H2O)y. Includes the formation of carbohydrate derivatives by the addition of a carbohydrate residue to another molecule.

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 Related Entries

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

UniProtKB/TrEMBL
        Q9KFR4_BACHD | Q9KFR4: 2c3g 2c3h 2c3v 2c3w

(-) Related Entries Specified in the PDB File

2c3g STRUCTURE OF CBM26 FROM BACILLUS HALODURANS AMYLASE
2c3h STRUCTURE OF CBM26 FROM BACILLUS HALODURANS AMYLASE IN COMPLEX WITH MALTOSE
2c3v STRUCTURE OF IODINATED CBM25 FROM BACILLUS HALODURANS AMYLASE
2c3w STRUCTURE OF CBM25 FROM BACILLUS HALODURANS AMYLASE IN COMPLEX WITH MALTOTETRAOSE