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(-) Description

Title :  CRYSTAL STRUCTURE OF S. MARCESCENS CHITINASE A MUTANT W167A IN COMPLEX WITH ALLOSAMIDIN
 
Authors :  N. N. Aronson Jr. , B. A. Halloran, M. F. Alexyev, X. E. Zhou, Y. Wang, E. J L. Chen
Date :  11 Aug 04  (Deposition) - 26 Jul 05  (Release) - 09 Nov 16  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.00
Chains :  Asym./Biol. Unit :  A
Keywords :  Inhibitor Complex, Hydrolase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  N. N. Aronson Jr. , B. A. Halloran, M. F. Alexyev, X. E. Zhou, Y. Wang, E. J. Meehan, L. Chen
Muation Of Trp167 At The -3 Subsite Of The Chitin-Binding Cleft Of S. Marcescens Chitinase A Causes Enhanced Transglycosylation
To Be Published
PubMed: search

(-) Compounds

Molecule 1 - CHITINASE A
    Chains: A
    EC Number: 3.2.1.14
    Engineered: YES
    Expression System: ESCHERICHIA COLI BL21(DE3)
    Expression System Plasmid: PET23A
    Expression System Strain: BL21(DE3)
    Expression System Taxid: 469008
    Expression System Vector Type: PLASMID
    Gene: CHIA
    Mutation: YES
    Organism Scientific: SERRATIA MARCESCENS
    Organism Taxid: 615

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit : A

Summary Information (see also Sequences/Alignments below)

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

Asymmetric/Biological Unit (1, 1)
No.NameCountTypeFull Name
1AO31Ligand/IonALLOSAMIDIN

(-) Sites  (1, 1)

Asymmetric Unit (1, 1)
No.NameEvidenceResiduesDescription
1AC1SOFTWARETYR A:163 , PHE A:191 , TRP A:275 , THR A:276 , ASP A:313 , GLU A:315 , MET A:388 , TYR A:390 , ASP A:391 , TYR A:444 , ARG A:446 , GLU A:473 , ILE A:476 , TRP A:539 , GLU A:540 , HOH A:725BINDING SITE FOR RESIDUE AO3 A 564

(-) SS Bonds  (2, 2)

Asymmetric/Biological Unit
No.Residues
1A:115 -A:120
2A:195 -A:218

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1X6N)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1X6N)

(-) PROSITE Motifs  (1, 1)

Asymmetric/Biological Unit (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1CHITINASE_18PS01095 Chitinases family 18 active site.CHIA_SERMA307-315  1A:307-315

(-) Exons   (0, 0)

(no "Exon" information available for 1X6N)

(-) 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:539
 aligned with CHIA_SERMA | P07254 from UniProtKB/Swiss-Prot  Length:563

    Alignment length:539
                                    33        43        53        63        73        83        93       103       113       123       133       143       153       163       173       183       193       203       213       223       233       243       253       263       273       283       293       303       313       323       333       343       353       363       373       383       393       403       413       423       433       443       453       463       473       483       493       503       513       523       533       543       553         
           CHIA_SERMA    24 AAPGKPTIAWGNTKFAIVEVDQAATAYNNLVKVKNAADVSVSWNLWNGDAGTTAKILLNGKEAWSGPSTGSSGTANFKVNKGGRYQMQVALCNADGCTASDATEIVVADTDGSHLAPLKEPLLEKNKPYKQNSGKVVGSYFVEWGVYGRNFTVDKIPAQNLTHLLYGFIPICGGNGINDSLKEIEGSFQALQRSCQGREDFKVSIHDPFAALQKAQKGVTAWDDPYKGNFGQLMALKQAHPDLKILPSIGGWTLSDPFFFMGDKVKRDRFVGSVKEFLQTWKFFDGVDIDWEFPGGKGANPNLGSPQDGETYVLLMKELRAMLDQLSAETGRKYELTSAISAGKDKIDKVAYNVAQNSMDHIFLMSYDFYGPFDLKNLGHQTALNAPAWKPDTAYTTVNGVNALLAQGVKPGKVVVGTAMYGRGWTGVNGYQNNIPFTGTATGPVKGTWKNGIVDYRQIAGQFMSGEWQYTYDATAEAPYVFKPSTGDLITFDDARSVQAKGKYVLDKQLGGLFSWEIDADNGDILNSMNASLGNSAGV 562
               SCOP domains d1x6na1 A:24-132 Chitinase A, N-terminal domain N                                                            d1x6na2 A:133-443,A:517-562 Chitinase A, catalytic domain                                                                                                                                                                                                                                                              d1x6na3 A:444-516 Chitinase A                                            d1x6na2 A:133-443,A:517-562                    SCOP domains
               CATH domains 1x6nA01 A:24-130 Immunoglobulins                                                                           1x6nA02 A:131-442,A:519-562 Glycosidases                                                                                                                                                                                                                                                                                1x6nA03 A:443-518  [code=3.10.50.10, no name defined]                       1x6nA02 A:131-442,A:519-562 Glycosidases     CATH domains
               Pfam domains ChitinaseA_N-1x6nA01 A:24-156                                                                                                        -Glyco_hydro_18-1x6nA02 A:158-544                                                                                                                                                                                                                                                                                                                                                                   ------------------ Pfam domains
         Sec.struct. author ......ee.....eee.eee.....hhhhheee...eeeeeeee........eeeeee..eeeeeee....eeeeeeee...eeeeeeeeeee..eeee...eeeeee...........................eeeeeehhhhhh....hhhhhhhhhh.eeeeeee........hhhhhhh.hhhhhhhhhh...........hhhhhhh.............hhhhhhhhhhhhhh...eeeeeee....hhhhhhh.hhhhhhhhhhhhhhhhhhh....eeeee................hhhhhhhhhhhhhhhhhhhhhhhhh...eeeeeee.hhhhhh..hhhhhhhhh.eeeee..............................hhhhhhhhhhhhh.hhh.eeeeee.eeeeee........hhhhh...ee........eeehhhhhhhh.....eeeee....eeeeee....eeee..hhhhhhhhhhhhhhh...eeeeehhhhh.hhhhhhhhhhh...... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------CHITINASE------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1x6n A  24 AAPGKPTIAWGNTKFAIVEVDQAATAYNNLVKVKNAADVSVSWNLWNGDAGTTAKILLNGKEAWSGPSTGSSGTANFKVNKGGRYQMQVALCNADGCTASDATEIVVADTDGSHLPPLKESLLEKNKPYKQNSGKVVGSYFVEAGVYGRNFTVDKIPAQNLTHLLYGFIPICGGNGINDSLKEIEGSFQALQRSCQGREDFKISIHDPFAALQKAQKGVTAWDDPYKGNFGQLMALKQAHPDLKILPSIGGWTLSDPFFFMGDKVKRDRFVGSVKEFLQTWKFFDGVDIDWEFPGGKGANPNLGSPQDGETYVLLMKELRAMLDQLSAETGRKYELTSAISAGKDKIDKVAYNVAQNSMDHIFLMSYDFYGAFDLKNLGHQTALNAPAWKPDTAYTTVNGVNALLAQGVKPGKIVVGTAMYGRGWTGVNGYQNNIPFTGTATGPVKGTWENGIVDYRQIASQFMSGEWQYTYDATAEAPYVFKPSTGDLITFDDARSVQAKGKYVLDKQLGGLFSWEIDADNGDILNSMNASLGNSAGV 562
                                    33        43        53        63        73        83        93       103       113       123       133       143       153       163       173       183       193       203       213       223       233       243       253       263       273       283       293       303       313       323       333       343       353       363       373       383       393       403       413       423       433       443       453       463       473       483       493       503       513       523       533       543       553
   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  (3, 3)

Asymmetric/Biological Unit
(-)
Class: All beta proteins (24004)
(-)
Class: Alpha and beta proteins (a+b) (23004)
(-)
Class: Alpha and beta proteins (a/b) (23833)

(-) CATH Domains  (3, 3)

Asymmetric/Biological Unit
(-)
Class: Alpha Beta (26913)
(-)
Class: Mainly Beta (13760)

(-) Pfam Domains  (2, 2)

Asymmetric/Biological Unit
(-)
Clan: E-set (290)
(-)
Clan: Glyco_hydro_tim (488)

(-) Gene Ontology  (8, 8)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (CHIA_SERMA | P07254)
molecular function
    GO:0004568    chitinase activity    Catalysis of the hydrolysis of (1->4)-beta linkages of N-acetyl-D-glucosamine (GlcNAc) polymers of chitin and chitodextrins.
    GO:0016787    hydrolase activity    Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc. Hydrolase is the systematic name for any enzyme of EC class 3.
    GO:0016798    hydrolase activity, acting on glycosyl bonds    Catalysis of the hydrolysis of any glycosyl bond.
    GO:0004553    hydrolase activity, hydrolyzing O-glycosyl compounds    Catalysis of the hydrolysis of any O-glycosyl bond.
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.
    GO:0006032    chitin catabolic process    The chemical reactions and pathways resulting in the breakdown of chitin, a linear polysaccharide consisting of beta-(1->4)-linked N-acetyl-D-glucosamine residues.
    GO:0008152    metabolic process    The chemical reactions and pathways, including anabolism and catabolism, by which living organisms transform chemical substances. Metabolic processes typically transform small molecules, but also include macromolecular processes such as DNA repair and replication, and protein synthesis and degradation.
    GO:0000272    polysaccharide catabolic process    The chemical reactions and pathways resulting in the breakdown of a polysaccharide, a polymer of many (typically more than 10) monosaccharide residues linked glycosidically.

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 Related Entries

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

UniProtKB/Swiss-Prot
        CHIA_SERMA | P07254: 1ctn 1ehn 1eib 1ffq 1ffr 1k9t 1nh6 1rd6 1x6l 2wk2 2wly 2wlz 2wm0

(-) Related Entries Specified in the PDB File

1rd6 CHITINASE A MUTANT W167A STRUCTURE AT 2.6A WITHOUT THE INHIBITOR
1x6l CHITINASE A MUTANT W167A STRUCTURE AT 1.9A WITHOUT THE INHIBITOR