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(-) Description

Title :  STRUCTURE OF CATALYTIC DOMAIN OF PSYCHROPHILIC CHITINASE B FROM ARTHROBACTER TAD20
 
Authors :  M. Ayati, D. Mandelman, N. Aghajari, R. Haser
Date :  23 Nov 01  (Deposition) - 23 Nov 02  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.74
Chains :  Asym./Biol. Unit :  A
Keywords :  Tim Barrel, Hydrolase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  M. Ayati, D. Mandelman, N. Aghajari, R. Haser
Structure Of Catalytical Domain Of Psychrophilic Chitinase From Arthobacter, With And Without Allosamidine
To Be Published
PubMed: search

(-) Compounds

Molecule 1 - CHITINASE B
    Chains: A
    EC Number: 3.2.1.14
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Taxid: 562
    Organism Scientific: ARTHROBACTER SP.
    Organism Taxid: 203265
    Strain: TAD20

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit : A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 5)

Asymmetric/Biological Unit (1, 5)
No.NameCountTypeFull Name
1GOL5Ligand/IonGLYCEROL

(-) Sites  (5, 5)

Asymmetric Unit (5, 5)
No.NameEvidenceResiduesDescription
1AC1SOFTWARELEU A:39 , ASP A:40 , GLY A:43 , THR A:44 , ALA A:45 , LYS A:46 , LYS A:123 , ASN A:124BINDING SITE FOR RESIDUE GOL A 529
2AC2SOFTWARETRP A:136 , GLU A:192 , TRP A:193 , PHE A:241 , GLN A:269 , TYR A:271 , ASP A:272 , HOH A:682 , HOH A:897BINDING SITE FOR RESIDUE GOL A 530
3AC3SOFTWAREGLN A:26 , ASN A:57 , PHE A:66 , MET A:67 , ALA A:68 , ALA A:82 , GLY A:83 , ASP A:84 , ASP A:88BINDING SITE FOR RESIDUE GOL A 531
4AC4SOFTWAREGLN A:61 , THR A:62 , LYS A:154 , HOH A:775BINDING SITE FOR RESIDUE GOL A 532
5AC5SOFTWARETYR A:30 , ASP A:84 , GLY A:350 , TYR A:352 , THR A:354 , HOH A:712 , HOH A:893BINDING SITE FOR RESIDUE GOL A 533

(-) SS Bonds  (1, 1)

Asymmetric/Biological Unit
No.Residues
1A:65 -A:159

(-) Cis Peptide Bonds  (3, 3)

Asymmetric/Biological Unit
No.Residues
1Ser A:54 -Phe A:55
2Glu A:192 -Trp A:193
3Trp A:412 -Glu A:413

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 1KFW)

(-) Exons   (0, 0)

(no "Exon" information available for 1KFW)

(-) 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 A from PDB  Type:PROTEIN  Length:435
 aligned with Q9REI6_ARTSP | Q9REI6 from UniProtKB/TrEMBL  Length:577

    Alignment length:435
                                    57        67        77        87        97       107       117       127       137       147       157       167       177       187       197       207       217       227       237       247       257       267       277       287       297       307       317       327       337       347       357       367       377       387       397       407       417       427       437       447       457       467       477     
         Q9REI6_ARTSP    48 PLTSTVNGYRNVGYFAQWGVYGRAFQAKQLDVSGTAKNLTHINYSFGNINNQTLTCFMANKAQGTGPNGSDGAGDAWADFGMGYAADKSVSGKADTWEYPLAGSFNQLKQLKAKNPKLKVMISLGGWTWSKNFSKAAATEQSRQKLVSSCIDLYIKGNLPNFEGRGGAGAAAGIFDGIDIDWEWPGTNSGLEGNGVDTFNDRANFKALLAEFRKQLDAYGSTNNKKYVLSAFLPANPADIDAGGWDDPANFKSLDFGSIQGYDLHGAWNPTLTGHQANLYDDPADPREPSKKFSADKAVKKYLAAGIDPKQLGLGLAAYGRGWTGAKNVSPWGPATDGAPGTYEKANEDYDKLKTLGTDHYDAATGSAWRYDGTQWWSYDNIATTKQKTDYIVSKGLGGGMWWELSGDRNGELVGAMSDKFRAAAPGPVTEAAPP 482
               SCOP domains d1kfwa1 A:10-327,A:389-444 Psychrophilic chitinase B                                                                                                                                                                                                                                                                          d1kfwa2 A:328-388 Psychrophilic chitinase B                  d1kfwa1 A:10-327,A:389-444 Psychrophilic chitinase B     SCOP domains
               CATH domains 1kfwA01 A:10-326,A:390-444 Glycosidases                                                                                                                                                                                                                                                                                      1kfwA02 A:327-389  [code=3.10.50.10, no name defined]          1kfwA01 A:10-326,A:390-444 Glycosidases                 CATH domains
               Pfam domains --------Glyco_hydro_18-1kfwA01 A:18-417                                                                                                                                                                                                                                                                                                                                                                                 --------------------------- Pfam domains
         Sec.struct. author .........eeeeeee.hhhh....hhhhhhhh.hhhhh.eeeeeee............ee............eehhhhhh....................hhhhhhhhhhhh.....eeeeeee......hhhhhh.hhhhhhhhhhhhhhhhh...eeee..eee.........eeeee..................hhhhhhhhhhhhhhhhhhhhhhhh....eeeeee..hhhhhhhhh..hhhhhhh..eeee............................hhhhh.hhhhhhhhhhhh..hhh.eeeeee.eeeeee............ee........eeehhhhh...eeeee....eeeee....eeee.hhhhhhhhhhhhhhh...eeeeehhhhh..hhhhhhhhhhhhhh........... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1kfw A  10 PLTSTVNGYRNVGYFAQWGVYGRAFQAKQLDVSGTAKNLTHINYSFGNINNQTLTCFMANKAQGTGPNGSDGAGDAWADFGMGYAADKSVSGKADTWDQPLAGSFNQLKQLKAKNPKLKVMISLGGWTWSKNFSKAAATEASRQKLVSSCIDLYIKGNLPNFEGRGGAGAAAGIFDGIDIDWEWPGTNSGLAGNGVDTVNDRANFKALLAEFRKQLDAYGSTNNKKYVLSAFLPANPADIDAGGWDDPANFKSLDFGSIQGYDLHGAWNPTLTGHQANLYDDPADPRAPSKKFSADKAVKKYLAAGIDPKQLGLGLAAYGRGWTGAKNVSPWGPATDGAPGTYETANEDYDKLKTLGTDHYDAATGSAWRYDGTQWWSYDNIATTKQKTDYIVSKGLGGGMWWELSGDRNGELVGAMSDKFRAAAPGPVTEAAPP 444
                                    19        29        39        49        59        69        79        89        99       109       119       129       139       149       159       169       179       189       199       209       219       229       239       249       259       269       279       289       299       309       319       329       339       349       359       369       379       389       399       409       419       429       439
   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  (2, 2)

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

(-) CATH Domains  (2, 2)

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

(-) Pfam Domains  (1, 1)

Asymmetric/Biological Unit
(-)
Clan: Glyco_hydro_tim (488)

(-) Gene Ontology  (9, 9)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (Q9REI6_ARTSP | Q9REI6)
molecular function
    GO:0030246    carbohydrate binding    Interacting selectively and non-covalently with any carbohydrate, which includes monosaccharides, oligosaccharides and polysaccharides as well as substances derived from monosaccharides by reduction of the carbonyl group (alditols), by oxidation of one or more hydroxy groups to afford the corresponding aldehydes, ketones, or carboxylic acids, or by replacement of one or more hydroxy group(s) by a hydrogen atom. Cyclitols are generally not regarded as carbohydrates.
    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.
cellular component
    GO:0005576    extracellular region    The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.

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