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(-) Description

Title :  INHIBITION OF THE EXO-BETA-D-GLUCOSAMINIDASE CSXA BY A GLUCOSAMINE-CONFIGURED CASTANOSPERMINE AND AN AMINO-AUSTRALINE ANALOGUE
 
Authors :  B. Pluvinage, M. G. Ghinet, R. Brzezinski, A. B. Boraston, K. A. Stubbs
Date :  07 Dec 09  (Deposition) - 09 Feb 10  (Release) - 09 Feb 10  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.40
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A  (1x)
Biol. Unit 2:  B  (1x)
Keywords :  Exo-Beta-D-Glucosaminidase, Glycoside Hydrolase, Gh2, Csxa, Hydrolase, Glycosidase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  B. Pluvinage, M. G. Ghinet, R. Brzezinski, A. B. Boraston, K. A. Stubbs
Inhibition Of The Exo-Beta-D-Glucosaminidase Csxa By A Glucosamine-Configured Castanospermine And An Amino-Australine Analogue.
Org. Biomol. Chem. V. 7 4169 2009
PubMed-ID: 19795054  |  Reference-DOI: 10.1039/B913235J

(-) Compounds

Molecule 1 - EXO-BETA-D-GLUCOSAMINIDASE
    Chains: A, B
    EC Number: 3.2.1.165
    Engineered: YES
    Expression System: STREPTOMYCES LIVIDANS
    Expression System Plasmid: PFD666
    Expression System Strain: TK24
    Expression System Taxid: 457428
    Fragment: RESIDUES 2-1032
    Organism Scientific: AMYCOLATOPSIS ORIENTALIS
    Organism Taxid: 31958

 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, 5)

Asymmetric Unit (2, 5)
No.NameCountTypeFull Name
1CD3Ligand/IonCADMIUM ION
2X092Ligand/IonAMINO-AUSTRALINE
Biological Unit 1 (1, 1)
No.NameCountTypeFull Name
1CD-1Ligand/IonCADMIUM ION
2X091Ligand/IonAMINO-AUSTRALINE
Biological Unit 2 (1, 1)
No.NameCountTypeFull Name
1CD-1Ligand/IonCADMIUM ION
2X091Ligand/IonAMINO-AUSTRALINE

(-) Sites  (5, 5)

Asymmetric Unit (5, 5)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREILE A:202 , ASP A:203 , TRP A:204 , GLU A:394 , CYS A:419 , SER A:468 , ASP A:469 , TYR A:516 , GLU A:541 , TRP A:642 , TRP A:653 , HOH A:2437BINDING SITE FOR RESIDUE X09 A1900
2AC2SOFTWAREILE B:202 , ASP B:203 , TRP B:204 , GLU B:394 , CYS B:419 , SER B:468 , ASP B:469 , TYR B:516 , GLU B:541 , TRP B:642 , TRP B:653 , TRP B:781 , HOH B:2415 , HOH B:2708BINDING SITE FOR RESIDUE X09 B1900
3AC3SOFTWAREHIS A:244 , ASP A:246 , HOH A:2212BINDING SITE FOR RESIDUE CD A1901
4AC4SOFTWAREASP A:296 , HOH A:2261BINDING SITE FOR RESIDUE CD A1902
5AC5SOFTWAREASN B:428 , GLY B:429 , GLU B:431 , GLY B:433 , HOH B:2371BINDING SITE FOR RESIDUE CD B1901

(-) SS Bonds  (2, 2)

Asymmetric Unit
No.Residues
1A:419 -A:420
2B:419 -B:420

(-) Cis Peptide Bonds  (9, 9)

Asymmetric Unit
No.Residues
1Leu A:144 -Ser A:145
2Gly A:514 -Pro A:515
3Trp A:642 -Met A:643
4Val A:803 -Gly A:804
5Leu A:849 -Pro A:850
6Leu B:144 -Ser B:145
7Gly B:514 -Pro B:515
8Trp B:642 -Met B:643
9Leu B:849 -Pro B:850

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2X09)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 2X09)

(-) Exons   (0, 0)

(no "Exon" information available for 2X09)

(-) 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:851
 aligned with EBDG_AMYOR | Q56F26 from UniProtKB/Swiss-Prot  Length:1032

    Alignment length:851
                                    58        68        78        88        98       108       118       128       138       148       158       168       178       188       198       208       218       228       238       248       258       268       278       288       298       308       318       328       338       348       358       368       378       388       398       408       418       428       438       448       458       468       478       488       498       508       518       528       538       548       558       568       578       588       598       608       618       628       638       648       658       668       678       688       698       708       718       728       738       748       758       768       778       788       798       808       818       828       838       848       858       868       878       888       898 
           EBDG_AMYOR    49 GNATPIPGYVIQSSAQVSDDSAVSKPGFPTSGWYPVSSRSTVYAGLLQNGKYADPFYSTNMQNVPAAQFSVPWWYRTDLNVDDTSSRTYLDFSGVLSKADVWVNGTKVATKDQVNGAYTRHDLDITAQVHTGVNSVAFKVYPNDPNRDLSMGWIDWAQTPPDQNMGIVRDVLVRRSGAVALRSAHVIQKLNSALDHADLTVKADVRNDSANAVQTTVAGTVAGKPISQTVSLAAKERKTVTFPLVGLDRPNVWWPAGMGGQHRYDLDLTASVGGTPSDAAKSKFGVRDVKATLNSSGGRQYSVNGKPLLIRGGGYTPDLFLRWNETAAADKLKYVLNLGLNTVRLEGHIEPDEFFDIADDLGVLTMPGWECCDKWEGQVNGEEKGEPWVESDYPIAKASMFSEAERLRDHPSVISFHIGSDFAPDRRIEQGYLDAMKAADFLLPVIPAASARPSPITGASGMKMNGPYDYVPPVYWYDKSQKDRGGAWSFNSETSAGVDIPTMDTLKRMMSASELDTMWKNPSAKQYHRSSSDTFGNLKLFGDALTKRYGASANLNDFVRKAQLSQYENVRAEFESHSRNYTDSTNPSTGLIYWMLNSPWTSLHWQLFDAYMDQNGAYYGAKKANEPLHIQYSHDNRSVVVINQTSNAVSGLTATTKLYNLDGTEKYSNTKTGLSVGALGAKATAVTVPAVSGLSTTYLAKWVLTDSSGKEVSRNVYWLSTKADTLNWGGSDWYYTPQSAFADLSGLNNLGQSAVGATANSVAGADGTTTTTVTLKNTSGGRLPAFYVDSKVVDSAGKPVLPVEWNDNAVSLWPGETTTLTAKYRTADLKGSKPSVRISGWNTGTQTVPAD 899
               SCOP domains d2x09a1 A:49-225 Exochitosanase CsxA                                                                                                                                             d2x09a2 A:226-335 Exochitosanase CsxA, domains 2, 4 and 5                                                     d2x09a3 A:336-674 Exochitosanase CsxA                                                                                                                                                                                                                                                                                                              d2x09a4 A:675-777 Exochitosanase CsxA, domains 2, 4 and 5                                              d2x09a5 A:778-899 Exochitosanase CsxA, domains 2, 4 and 5                                                                  SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..eee..eeeeee.hhh.hhhhh..........eeee...hhhhhhhhh.........hhhhhh.hhhhh..eeeeeeeee.....eeeeee..ee..eeeee..eeee...........eeee.......eeeeeeeee.........................ee...eeeeee..eeeeeeeeeeee.....eeeeeeeeeeee.....eeeeeeeee..eeeeeeeee....eeeee...eeee...............eeeeeeee....eeeeeeeee....eeeee.....eeeee..eee.eeeeee........hhhhhhhhhhhhhhh...eeee.....hhhhhhhhhhhh.eee......hhhhh.............hhhhhhhhhhhhhhhhhh.......ee.......hhhhhhhhhhhhhhh.....ee.........................hhhhhhh..........eeeeee.......hhhhhhhhhhhhhhhhhhhh................hhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhh....eeeeee.....................hhhhhhhhhhh..eeeee.....eeeeee.....eeeeeeeeeeee....eeeeeeeeeeee....eeeeeee.........eeeeeeeee.....eeeeeeeeee....ee.hhhh......eee...hhhhhhh....eeeeeeeee....eeeeeeeeee.......eeeeeeeee..........ee....eee....eeeeeeeee.hhhh....eeeeee...eeeeee.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2x09 A  49 GNATPIPGYVIQSSAQVSDDSAVSKPGFPTSGWYPVSSRSTVYAGLLQNGKYADPFYSTNMQNVPAAQFSVPWWYRTDLNVDDTSSRTYLDFSGVLSKADVWVNGTKVATKDQVNGAYTRHDLDITAQVHTGVNSVAFKVYPNDPNRDLSMGWIDWAQTPPDQNMGIVRDVLVRRSGAVALRSAHVIQKLNSALDHADLTVKADVRNDSANAVQTTVAGTVAGKPISQTVSLAAKERKTVTFPLVGLDRPNVWWPAGMGGQHRYDLDLTASVGGTPSDAAKSKFGVRDVKATLNSSGGRQYSVNGKPLLIRGGGYTPDLFLRWNETAAADKLKYVLNLGLNTVRLEGHIEPDEFFDIADDLGVLTMPGWECCDKWEGQVNGEEKGEPWVESDYPIAKASMFSEAERLRDHPSVISFHIGSDFAPDRRIEQGYLDAMKAADFLLPVIPAASARPSPITGASGMKMNGPYDYVPPVYWYDKSQKDRGGAWSFNSETSAGVDIPTMDTLKRMMSASELDTMWKNPSAKQYHRSSSDTFGNLKLFGDALTKRYGASANLNDFVRKAQLSQYENVRAEFESHSRNYTDSTNPSTGLIYWMLNSPWTSLHWQLFDAYMDQNGAYYGAKKANEPLHIQYSHDNRSVVVINQTSNAVSGLTATTKLYNLDGTEKYSNTKTGLSVGALGAKATAVTVPAVSGLSTTYLAKNVLTDSSGKEVSRNVYWLSTKADTLNWGGSDWYYTPQSAFADLSGLNNLGQSAVGATANSVAGADGTTTTTVTLKNTSGGRLPAFYVDSKVVDSAGKPVLPVEWNDNAVSLWPGETTTLTAKYRTADLKGSKPSVRISGWNTGTQTVPAD 899
                                    58        68        78        88        98       108       118       128       138       148       158       168       178       188       198       208       218       228       238       248       258       268       278       288       298       308       318       328       338       348       358       368       378       388       398       408       418       428       438       448       458       468       478       488       498       508       518       528       538       548       558       568       578       588       598       608       618       628       638       648       658       668       678       688       698       708       718       728       738       748       758       768       778       788       798       808       818       828       838       848       858       868       878       888       898 


Chain B from PDB  Type:PROTEIN  Length:851
 aligned with EBDG_AMYOR | Q56F26 from UniProtKB/Swiss-Prot  Length:1032

    Alignment length:851
                                    58        68        78        88        98       108       118       128       138       148       158       168       178       188       198       208       218       228       238       248       258       268       278       288       298       308       318       328       338       348       358       368       378       388       398       408       418       428       438       448       458       468       478       488       498       508       518       528       538       548       558       568       578       588       598       608       618       628       638       648       658       668       678       688       698       708       718       728       738       748       758       768       778       788       798       808       818       828       838       848       858       868       878       888       898 
           EBDG_AMYOR    49 GNATPIPGYVIQSSAQVSDDSAVSKPGFPTSGWYPVSSRSTVYAGLLQNGKYADPFYSTNMQNVPAAQFSVPWWYRTDLNVDDTSSRTYLDFSGVLSKADVWVNGTKVATKDQVNGAYTRHDLDITAQVHTGVNSVAFKVYPNDPNRDLSMGWIDWAQTPPDQNMGIVRDVLVRRSGAVALRSAHVIQKLNSALDHADLTVKADVRNDSANAVQTTVAGTVAGKPISQTVSLAAKERKTVTFPLVGLDRPNVWWPAGMGGQHRYDLDLTASVGGTPSDAAKSKFGVRDVKATLNSSGGRQYSVNGKPLLIRGGGYTPDLFLRWNETAAADKLKYVLNLGLNTVRLEGHIEPDEFFDIADDLGVLTMPGWECCDKWEGQVNGEEKGEPWVESDYPIAKASMFSEAERLRDHPSVISFHIGSDFAPDRRIEQGYLDAMKAADFLLPVIPAASARPSPITGASGMKMNGPYDYVPPVYWYDKSQKDRGGAWSFNSETSAGVDIPTMDTLKRMMSASELDTMWKNPSAKQYHRSSSDTFGNLKLFGDALTKRYGASANLNDFVRKAQLSQYENVRAEFESHSRNYTDSTNPSTGLIYWMLNSPWTSLHWQLFDAYMDQNGAYYGAKKANEPLHIQYSHDNRSVVVINQTSNAVSGLTATTKLYNLDGTEKYSNTKTGLSVGALGAKATAVTVPAVSGLSTTYLAKWVLTDSSGKEVSRNVYWLSTKADTLNWGGSDWYYTPQSAFADLSGLNNLGQSAVGATANSVAGADGTTTTTVTLKNTSGGRLPAFYVDSKVVDSAGKPVLPVEWNDNAVSLWPGETTTLTAKYRTADLKGSKPSVRISGWNTGTQTVPAD 899
               SCOP domains d2x09b1 B:49-225 Exochitosanase CsxA                                                                                                                                             d2x09b2 B:226-335 Exochitosanase CsxA, domains 2, 4 and 5                                                     d2x09b3 B:336-674 Exochitosanase CsxA                                                                                                                                                                                                                                                                                                              d2x09b4 B:675-777 Exochitosanase CsxA, domains 2, 4 and 5                                              d2x09b5 B:778-899 Exochitosanase CsxA, domains 2, 4 and 5                                                                  SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
           Pfam domains (1) ------Glyco_hydro_2_N-2x09B01 B:55-223                                                                                                                                         ---Glyco_hydro_2-2x09B03 B:227-335                                                                              ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains (1)
           Pfam domains (2) ------Glyco_hydro_2_N-2x09B02 B:55-223                                                                                                                                         ---Glyco_hydro_2-2x09B04 B:227-335                                                                              ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains (2)
         Sec.struct. author .eeee..eeeeee.....hhhhh..........eeee...hhhhhhhhh.........hhhhhh.hhhhh..eeeeeeeee.....eeeeee..ee.eeeeee..eeeeeeeeee.....eeee.......eeeeeeeee.........................ee...eeeeee..eeeeeeeeeeee.....eeeeeeeeeeee.....eeeeeeeee..eeeeeeeee....eeeee...eeee...............eeeeeeeee..eeeeeeeeee....eeeee.....eeeee..ee..eeeeee........hhhhhhhhhhhhhhhh..eeeee....hhhhhhhhhhhh.eeeee....hhhhh.............hhhhhhhhhhhhhhhhhh.......ee.......hhhhhhhhhhhhhhh.....ee.........................hhhhhhh..........eeeeee.......hhhhhhhhhhhhhhhhhhhh................hhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhh....eeeeee.....................hhhhhhhhhhh..eeeee.....eeeeee.....eeeeeeeeeeee....eeeeeeeeeeee....eeeeeee.........eeeeeeeee.....eeeeeeeeee....ee.hhhh......eee...hhhhhhh....eeeeeeeee....eeeeeeeeee.......eeeeeeeee..........ee....eee....eeeeeeeee.hhhh....eeeeee...eeeeee.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2x09 B  49 GNATPIPGYVIQSSAQVSDDSAVSKPGFPTSGWYPVSSRSTVYAGLLQNGKYADPFYSTNMQNVPAAQFSVPWWYRTDLNVDDTSSRTYLDFSGVLSKADVWVNGTKVATKDQVNGAYTRHDLDITAQVHTGVNSVAFKVYPNDPNRDLSMGWIDWAQTPPDQNMGIVRDVLVRRSGAVALRSAHVIQKLNSALDHADLTVKADVRNDSANAVQTTVAGTVAGKPISQTVSLAAKERKTVTFPLVGLDRPNVWWPAGMGGQHRYDLDLTASVGGTPSDAAKSKFGVRDVKATLNSSGGRQYSVNGKPLLIRGGGYTPDLFLRWNETAAADKLKYVLNLGLNTVRLEGHIEPDEFFDIADDLGVLTMPGWECCDKWEGQVNGEEKGEPWVESDYPIAKASMFSEAERLRDHPSVISFHIGSDFAPDRRIEQGYLDAMKAADFLLPVIPAASARPSPITGASGMKMNGPYDYVPPVYWYDKSQKDRGGAWSFNSETSAGVDIPTMDTLKRMMSASELDTMWKNPSAKQYHRSSSDTFGNLKLFGDALTKRYGASANLNDFVRKAQLSQYENVRAEFESHSRNYTDSTNPSTGLIYWMLNSPWTSLHWQLFDAYMDQNGAYYGAKKANEPLHIQYSHDNRSVVVINQTSNAVSGLTATTKLYNLDGTEKYSNTKTGLSVGALGAKATAVTVPAVSGLSTTYLAKNVLTDSSGKEVSRNVYWLSTKADTLNWGGSDWYYTPQSAFADLSGLNNLGQSAVGATANSVAGADGTTTTTVTLKNTSGGRLPAFYVDSKVVDSAGKPVLPVEWNDNAVSLWPGETTTLTAKYRTADLKGSKPSVRISGWNTGTQTVPAD 899
                                    58        68        78        88        98       108       118       128       138       148       158       168       178       188       198       208       218       228       238       248       258       268       278       288       298       308       318       328       338       348       358       368       378       388       398       408       418       428       438       448       458       468       478       488       498       508       518       528       538       548       558       568       578       588       598       608       618       628       638       648       658       668       678       688       698       708       718       728       738       748       758       768       778       788       798       808       818       828       838       848       858       868       878       888       898
   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, 10)

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

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 2X09)

(-) Pfam Domains  (2, 4)

Asymmetric Unit
(-)
Clan: GBD (153)
(-)
Clan: no clan defined [family: Glyco_hydro_2] (31)

(-) Gene Ontology  (11, 11)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (EBDG_AMYOR | Q56F26)
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:0052761    exo-1,4-beta-D-glucosaminidase activity    Catalysis of the reaction: [beta-(1->4)-D-glucosamine]n-[N-acetyl-D-glucosamine]m = D-glucosamine + [beta-(1->4)-D-glucosamine](n-1)-[N-acetyl-D-glucosamine]m. This reaction is the hydrolysis of chitosan or chitosan oligosaccharides to remove a D-glucosamine residue from the non-reducing termini; chitosan is a linear polysaccharide composed of randomly distributed beta-(1->4)-linked D-glucosamine and N-acetyl-D-glucosamine units.
    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.
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.
    GO:0005615    extracellular space    That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.

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  2x09
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  EBDG_AMYOR | Q56F26
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  3.2.1.165
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  EBDG_AMYOR | Q56F26
    Protein Disorder Prediction: DisEMBL | FoldIndex | GLOBPLOT (for more information see DisProt)

 Related Entries

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

UniProtKB/Swiss-Prot
        EBDG_AMYOR | Q56F26: 2vzo 2vzp 2vzq 2vzr 2vzs 2vzt 2vzu 2vzv 2x05

(-) Related Entries Specified in the PDB File

2vzo CRYSTAL STRUCTURE OF AMYCOLATOPSIS ORIENTALIS EXO-CHITOSANASE CSXA
2vzp ATOMIC RESOLUTION STRUCTURE OF THE C- TERMINAL CBM35 FROM AMYCOLATOPSIS ORIENTALIS EXO-CHITOSANASE CSXA
2vzq C-TERMINAL CBM35 FROM AMYCOLATOPSIS ORIENTALIS EXO-CHITOSANASE CSXA IN COMPLEX WITH DIGALACTURONIC ACID
2vzr C-TERMINAL CBM35 FROM AMYCOLATOPSIS ORIENTALIS EXO-CHITOSANASE CSXA IN COMPLEX WITH GLUCURONIC ACID
2vzs CHITOSAN PRODUCT COMPLEX OF AMYCOLATOPSIS ORIENTALIS EXO-CHITOSANASE CSXA
2vzt COMPLEX OF AMYCOLATOPSIS ORIENTALIS EXO- CHITOSANASE CSXA E541A WITH PNP-BETA-D- GLUCOSAMINE
2vzu COMPLEX OF AMYCOLATOPSIS ORIENTALIS EXO- CHITOSANASE CSXA D469A WITH PNP-BETA-D- GLUCOSAMINE
2vzv SUBSTRATE COMPLEX OF AMYCOLATOPSIS ORIENTALIS EXO-CHITOSANASE CSXA E541A WITH CHITOSAN
2x05 INHIBITION OF THE EXO-BETA-D-GLUCOSAMINIDASE CSXA BY A GLUCOSAMINE-CONFIGURED CASTANOSPERMINE AND AN AMINO-AUSTRALINE ANALOGUE