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(-) Description

Title :  STRUCTURAL ANALYSIS OF AN EXO-BETA-AGARASE
 
Authors :  B. Pluvinage, J. H. Hehemann, A. B. Boraston
Date :  29 May 13  (Deposition) - 14 Aug 13  (Release) - 16 Oct 13  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.30
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A  (1x)
Biol. Unit 2:  B  (1x)
Keywords :  Hydrolase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  B. Pluvinage, J. H. Hehemann, A. B. Boraston
Substrate Recognition And Hydrolysis By A Family 50 Exo-Beta-Agarase Aga50D From The Marine Bacterium Saccharophagus Degradans
J. Biol. Chem. V. 288 28078 2013
PubMed-ID: 23921382  |  Reference-DOI: 10.1074/JBC.M113.491068

(-) Compounds

Molecule 1 - B-AGARASE
    Chains: A, B
    EC Number: 3.2.1.81
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Taxid: 562
    Expression System Vector: PET28A
    Expression System Vector Type: PLASMID
    Fragment: CATALYTIC MODULE, RESIDUES 47-793
    Mutation: YES
    Organism Scientific: SACCHAROPHAGUS DEGRADANS
    Organism Taxid: 203122
    Strain: 2-40
    Synonym: FAMILY 50 GLYCOSIDE HYDROLASE

 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  (4, 26)

Asymmetric Unit (4, 26)
No.NameCountTypeFull Name
1AAL8Ligand/Ion3,6-ANHYDRO-L-GALACTOSE
2CA6Ligand/IonCALCIUM ION
3GAL8Ligand/IonBETA-D-GALACTOSE
4GOL4Ligand/IonGLYCEROL
Biological Unit 1 (3, 9)
No.NameCountTypeFull Name
1AAL4Ligand/Ion3,6-ANHYDRO-L-GALACTOSE
2CA-1Ligand/IonCALCIUM ION
3GAL4Ligand/IonBETA-D-GALACTOSE
4GOL1Ligand/IonGLYCEROL
Biological Unit 2 (3, 11)
No.NameCountTypeFull Name
1AAL4Ligand/Ion3,6-ANHYDRO-L-GALACTOSE
2CA-1Ligand/IonCALCIUM ION
3GAL4Ligand/IonBETA-D-GALACTOSE
4GOL3Ligand/IonGLYCEROL

(-) Sites  (12, 12)

Asymmetric Unit (12, 12)
No.NameEvidenceResiduesDescription
01AC1SOFTWAREGLN A:252 , ASN A:253 , TYR A:258 , HIS A:703 , ASP A:746 , ASP A:765 , VAL A:766 , HOH A:2472 , HOH A:2493BINDING SITE FOR RESIDUE GOL A1801
02AC2SOFTWAREGLN B:252 , ASN B:253 , TYR B:258 , HIS B:703 , GLY B:704 , SER B:705 , ASP B:746 , ASP B:765 , VAL B:766 , HOH B:2435 , HOH B:2436BINDING SITE FOR RESIDUE GOL B1802
03AC3SOFTWARETRP B:494 , ALA B:496 , PRO B:498 , LYS B:535 , HOH B:2290 , HOH B:2308BINDING SITE FOR RESIDUE GOL B1803
04AC4SOFTWAREGLU A:559 , TYR B:72 , THR B:73BINDING SITE FOR RESIDUE GOL B1804
05AC5SOFTWAREASP A:50 , GLU A:52 , SER A:80 , LYS A:81 , ASP A:228 , HOH A:2032BINDING SITE FOR RESIDUE CA A1802
06AC6SOFTWAREASP B:50 , GLU B:52 , SER B:80 , LYS B:81 , ASP B:228 , HOH B:2003BINDING SITE FOR RESIDUE CA B1805
07AC7SOFTWAREASN A:336 , ARG A:752 , TYR A:754BINDING SITE FOR RESIDUE CA A1803
08AC8SOFTWAREPRO B:397 , ASN B:400 , GLU B:427 , GLU B:432 , HOH B:2242 , HOH B:2243BINDING SITE FOR RESIDUE CA B1806
09AC9SOFTWAREASN B:336 , ARG B:752 , TYR B:754 , HOH B:2209 , HOH B:2210BINDING SITE FOR RESIDUE CA B1807
10BC1SOFTWAREPRO A:397 , ASN A:400 , GLU A:427 , GLU A:432 , HOH A:2281BINDING SITE FOR RESIDUE CA A1804
11BC2SOFTWAREASP A:132 , THR A:134 , GLY A:138 , VAL A:140 , THR A:142 , LEU A:175 , TRP A:199 , ILE A:331 , ARG A:333 , ASN A:336 , ASP A:362 , SER A:363 , TRP A:461 , TRP A:479 , ASN A:533 , GLN A:534 , ARG A:539 , LYS A:576 , TRP A:650 , TYR A:672 , GLU A:695 , HIS A:697 , LEU A:710 , PHE A:742 , ARG A:752 , TYR A:754 , GLU A:757 , HOH A:2077 , HOH A:2078 , HOH A:2089 , HOH A:2125 , HOH A:2150 , HOH A:2375 , HOH A:2440 , HOH A:2441 , HOH A:2494 , HOH A:2507 , HOH A:2508 , HOH A:2509BINDING SITE FOR POLY-SACCHARIDE RESIDUES AAL A1793 THROUGH GAL A1800
12BC3SOFTWAREASP A:132 , THR A:134 , GLY A:138 , VAL A:140 , THR A:142 , LEU A:175 , TRP A:199 , GLN A:252 , ASN A:253 , TYR A:258 , ASN A:533 , GLN A:534 , ARG A:539 , LYS A:576 , TRP A:650 , TYR A:672 , GLU A:695 , HIS A:697 , HIS A:703 , LEU A:710 , PHE A:742 , ASP A:746 , ARG A:752 , GLU A:757 , ASP A:765 , VAL A:766 , AAL A:1793 , HOH A:2077 , HOH A:2078 , HOH A:2089 , HOH A:2125 , HOH A:2150 , HOH A:2375 , HOH A:2440 , HOH A:2441 , HOH A:2472 , HOH A:2493 , HOH A:2494 , HOH A:2507 , HOH A:2508 , HOH A:2509 , ASP B:132 , GLY B:138 , VAL B:140 , THR B:142 , LEU B:175 , TRP B:199 , ARG B:333 , ASN B:336 , ASP B:362 , SER B:363 , TRP B:461 , TRP B:479 , ASN B:533 , GLN B:534 , ARG B:539 , ASP B:541 , TRP B:650 , TYR B:672 , GLU B:695 , LEU B:710 , PHE B:742 , ARG B:752 , GLU B:757 , TYR B:759 , HOH B:2067 , HOH B:2069 , HOH B:2074 , HOH B:2102 , HOH B:2329 , HOH B:2387 , HOH B:2388 , HOH B:2437 , HOH B:2448 , HOH B:2449BINDING SITE FOR POLY-SACCHARIDE RESIDUES AAL B1794 THROUGH GAL B1801

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 4BQ5)

(-) Cis Peptide Bonds  (4, 4)

Asymmetric Unit
No.Residues
1Pro A:285 -Ser A:286
2Phe A:742 -Gln A:743
3Gly B:44 -Ser B:45
4Phe B:742 -Gln B:743

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 4BQ5)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 4BQ5)

(-) Exons   (0, 0)

(no "Exon" information available for 4BQ5)

(-) 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:748
 aligned with Q21HC5_SACD2 | Q21HC5 from UniProtKB/TrEMBL  Length:793

    Alignment length:748
                                    54        64        74        84        94       104       114       124       134       144       154       164       174       184       194       204       214       224       234       244       254       264       274       284       294       304       314       324       334       344       354       364       374       384       394       404       414       424       434       444       454       464       474       484       494       504       514       524       534       544       554       564       574       584       594       604       614       624       634       644       654       664       674       684       694       704       714       724       734       744       754       764       774       784        
         Q21HC5_SACD2    45 PVMLFDFENDQVPSNIHFLNARASIETYTGINGEPSKGLKLAMQSKQHSYTGLAIVPEQPWDWSEFTSASLYFDIVSVGDHSTQFYLDVTDQNGAVFTRSIDIPVGKMQSYYAKLSGHDLEVPDSGDVNDLNLASGLRSNPPTWTSDDRQFVWMWGVKNLDLSGIAKISLSVQSAMHDKTVIIDNIRIQPNPPQDENFLVGLVDEFGQNAKVDYKGKIHSLEELHAARDVELAELDGKPMPSRSKFGGWLAGPKLKATGYFRTEKINGKWMLVDPEGYPYFATGLDIIRLSNSSTMTGYDYDQATVAQRSADDVTPEDSKGLMAVSEKSFATRHLASPTRAAMFNWLPDYDHPLANHYNYRRSAHSGPLKRGEAYSFYSANLERKYGETYPGSYLDKWREVTVDRMLNWGFTSLGNWTDPAYYDNNRIPFFANGWVIGDFKTVSSGADFWGAMPDVFDPEFKVRAMETARVVSEEIKNSPWCVGVFIDNEKSFGRPDSDKAQYGIPIHTLGRPSEGVPTRQAFSKLLKAKYKTIAALNNAWGLKLSSWAEFDLGVDVKALPVTDTLRADYSMLLSAYADQYFKVVHGAVEHYMPNHLYLGARFPDWGMPMEVVKAAAKYADVVSYNSYKEGLPKQKWAFLAELDKPSIIGEFHIGAMDHGSYHPGLIHAASQADRGEMYKDYMQSVIDNPYFVGAHWFQYMDSPLTGRAYDGENYNVGFVDVTDTPYQEMVDAAKEVNAKIYTERLGS 792
               SCOP domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeee..........eeee.eeeeeeeee.....eeeeeeeee......eeeeee.............eeeeeeeee.....eeeeeeeee....eeeeeeee.....eeeeee..hhhhh...........................ee.eeeee........eeeeeeeee.....eeeeeeeeeeee.............................hhhhhhhhhhhhhhhh..........................eeeee..eeeee.....ee.eeee.........ee..ee.hhhhh.........hhhhh.....hhhhhh..ee.hhhhhhh........hhhhh.eeee..........eeeehhhhhhhhhhhh....hhhhhhhhhhhhhhhhhhh........hhhhh......eeeee.......ee.........ee...hhhhhhhhhhhhhhhhhhhh....eeeeee..........hhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhhhhhhhhhhhh....hhhhhh..........hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...............hhhhhhhhhhhh..eeee............hhhhhh..eeeee...................hhhhhhhhhhhhhhhhhh...eeeeee.............................hhhhhhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 4bq5 A  45 SHMLFDFENDQVPSNIHFLNARASIETYTGINGEPSKGLKLAMQSKQHSYTGLAIVPEQPWDWSEFTSASLYFDIVSVGDHSTQFYLDVTDQNGAVFTRSIDIPVGKMQSYYAKLSGHDLEVPDSGDVNDLNLASGLRSNPPTWTSDDRQFVWMWGVKNLDLSGIAKISLSVQSAMHDKTVIIDNIRIQPNPPQDENFLVGLVDEFGQNAKVDYKGKIHSLEELHAARDVELAELDGKPMPSRSKFGGWLAGPKLKATGYFRTEKINGKWMLVDPEGYPYFATGLDIIRLSNSSTMTGYDYDQATVAQRSADDVTPEDSKGLMAVSEKSFATRHLASPTRAAMFNWLPDYDHPLANHYNYRRSAHSGPLKRGEAYSFYSANLERKYGETYPGSYLDKWREVTVDRMLNWGFTSLGNWTDPAYYDNNRIPFFANGWVIGDFKTVSSGADFWGAMPDVFDPEFKVRAMETARVVSEEIKNSPWCVGVFIDNQKSFGRPDSDKAQYGIPIHTLGRPSEGVPTRQAFSKLLKAKYKTIAALNNAWGLKLSSWAEFDLGVDVKALPVTDTLRADYSMLLSAYADQYFKVVHGAVEHYMPNHLYLGARFPDWGMPMEVVKAAAKYADVVSYNSYKEGLPKQKWAFLAELDKPSIIGEFHIGAMDHGSYHPGLIHAASQADRGEMYKDYMQSVIDNPYFVGAHWFQYMDSPLTGRAYDGENYNVGFVDVTDTPYQEMVDAAKEVNAKIYTERLGS 792
                                    54        64        74        84        94       104       114       124       134       144       154       164       174       184       194       204       214       224       234       244       254       264       274       284       294       304       314       324       334       344       354       364       374       384       394       404       414       424       434       444       454       464       474       484       494       504       514       524       534       544       554       564       574       584       594       604       614       624       634       644       654       664       674       684       694       704       714       724       734       744       754       764       774       784        


Chain B from PDB  Type:PROTEIN  Length:749
 aligned with Q21HC5_SACD2 | Q21HC5 from UniProtKB/TrEMBL  Length:793

    Alignment length:750
                                    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       563       573       583       593       603       613       623       633       643       653       663       673       683       693       703       713       723       733       743       753       763       773       783       793
         Q21HC5_SACD2    44 SPVMLFDFENDQVPSNIHFLNARASIETYTGINGEPSKGLKLAMQSKQHSYTGLAIVPEQPWDWSEFTSASLYFDIVSVGDHSTQFYLDVTDQNGAVFTRSIDIPVGKMQSYYAKLSGHDLEVPDSGDVNDLNLASGLRSNPPTWTSDDRQFVWMWGVKNLDLSGIAKISLSVQSAMHDKTVIIDNIRIQPNPPQDENFLVGLVDEFGQNAKVDYKGKIHSLEELHAARDVELAELDGKPMPSRSKFGGWLAGPKLKATGYFRTEKINGKWMLVDPEGYPYFATGLDIIRLSNSSTMTGYDYDQATVAQRSADDVTPEDSKGLMAVSEKSFATRHLASPTRAAMFNWLPDYDHPLANHYNYRRSAHSGPLKRGEAYSFYSANLERKYGETYPGSYLDKWREVTVDRMLNWGFTSLGNWTDPAYYDNNRIPFFANGWVIGDFKTVSSGADFWGAMPDVFDPEFKVRAMETARVVSEEIKNSPWCVGVFIDNEKSFGRPDSDKAQYGIPIHTLGRPSEGVPTRQAFSKLLKAKYKTIAALNNAWGLKLSSWAEFDLGVDVKALPVTDTLRADYSMLLSAYADQYFKVVHGAVEHYMPNHLYLGARFPDWGMPMEVVKAAAKYADVVSYNSYKEGLPKQKWAFLAELDKPSIIGEFHIGAMDHGSYHPGLIHAASQADRGEMYKDYMQSVIDNPYFVGAHWFQYMDSPLTGRAYDGENYNVGFVDVTDTPYQEMVDAAKEVNAKIYTERLGSK 793
               SCOP domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ..eeee..........eeee.eeeeeeeee.....eeeeeeeee......eeeeee.............eeeeeeeeee....eeeeeeeee....eeeeeeee.....eeeeee..hhhhh..-........................ee.eeeee........eeeeeeeee.....eeeeeeeeeeee.............................hhhhhhhhhhhhhh............................eeeee..eeeee.....ee.eeeee........ee..ee.hhhhh.........hhhhh.....hhhhhhh.ee.hhhhhh.........hhhhh.eeee..........eeeehhhhhhhhhhhh....hhhhhhhhhhhhhhhhhhh........hhhhh......eeeee.......ee.........ee...hhhhhhhhhhhhhhhhhhhh....eeeeee..........hhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhhhhhhhhhhhh....hhhhhh..........hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...ee..........hhhhhhhhhhhh..eeee............hhhhhh..eeeee...................hhhhhhhhhhhhhhhhhhh..eeeeeee............................hhhhhhhhhhhhhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 4bq5 B  44 GSHMLFDFENDQVPSNIHFLNARASIETYTGINGEPSKGLKLAMQSKQHSYTGLAIVPEQPWDWSEFTSASLYFDIVSVGDHSTQFYLDVTDQNGAVFTRSIDIPVGKMQSYYAKLSGHDLEVP-SGDVNDLNLASGLRSNPPTWTSDDRQFVWMWGVKNLDLSGIAKISLSVQSAMHDKTVIIDNIRIQPNPPQDENFLVGLVDEFGQNAKVDYKGKIHSLEELHAARDVELAELDGKPMPSRSKFGGWLAGPKLKATGYFRTEKINGKWMLVDPEGYPYFATGLDIIRLSNSSTMTGYDYDQATVAQRSADDVTPEDSKGLMAVSEKSFATRHLASPTRAAMFNWLPDYDHPLANHYNYRRSAHSGPLKRGEAYSFYSANLERKYGETYPGSYLDKWREVTVDRMLNWGFTSLGNWTDPAYYDNNRIPFFANGWVIGDFKTVSSGADFWGAMPDVFDPEFKVRAMETARVVSEEIKNSPWCVGVFIDNQKSFGRPDSDKAQYGIPIHTLGRPSEGVPTRQAFSKLLKAKYKTIAALNNAWGLKLSSWAEFDLGVDVKALPVTDTLRADYSMLLSAYADQYFKVVHGAVEHYMPNHLYLGARFPDWGMPMEVVKAAAKYADVVSYNSYKEGLPKQKWAFLAELDKPSIIGEFHIGAMDHGSYHPGLIHAASQADRGEMYKDYMQSVIDNPYFVGAHWFQYMDSPLTGRAYDGENYNVGFVDVTDTPYQEMVDAAKEVNAKIYTERLGSK 793
                                    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       563       573       583       593       603       613       623       633       643       653       663       673       683       693       703       713       723       733       743       753       763       773       783       793
                                                                                                                                                     167 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
                                                                                                                                                       169
   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  (0, 0)

(no "SCOP Domain" information available for 4BQ5)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 4BQ5)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 4BQ5)

(-) Gene Ontology  (10, 10)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (Q21HC5_SACD2 | Q21HC5)
molecular function
    GO:0033916    beta-agarase activity    Catalysis of the hydrolysis of (1->4)-beta-D-galactosidic linkages in agarose, giving the tetramer as the predominant product.
    GO:0004565    beta-galactosidase activity    Catalysis of the hydrolysis of terminal, non-reducing beta-D-galactose residues in beta-D-galactosides.
    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:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
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: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:0009341    beta-galactosidase complex    A protein complex that possesses beta-galactosidase activity, i.e. catalyzes the hydrolysis of terminal non-reducing beta-D-galactose residues in beta-D-galactosides. In E. coli, the complex is a homotetramer; dimeric and hexameric beta-galactosidase complexes have been observed in other species.
    GO:0016021    integral component of membrane    The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.

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  Q21HC5_SACD2 | Q21HC5
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        Q21HC5_SACD2 | Q21HC5: 4bq2 4bq3 4bq4

(-) Related Entries Specified in the PDB File

4bq2 STRUCTURAL ANALYSIS OF AN EXO-BETA-AGARASE
4bq3 STRUCTURAL ANALYSIS OF AN EXO-BETA-AGARASE
4bq4 STRUCTURAL ANALYSIS OF AN EXO-BETA-AGARASE