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(-) Description

Title :  CALCIUM BINDING IN ALPHA-AMYLASES: AN X-RAY DIFFRACTION STUDY AT 2.1 ANGSTROMS RESOLUTION OF TWO ENZYMES FROM ASPERGILLUS
 
Authors :  L. Brady, A. M. Brzozowski, Z. Derewenda, E. J. Dodson, G. G. Dodson
Date :  27 Feb 91  (Deposition) - 15 Jul 93  (Release) - 17 Sep 14  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.12
Chains :  Asym./Biol. Unit :  A
Keywords :  Glycosidase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  E. Boel, L. Brady, A. M. Brzozowski, Z. Derewenda, G. G. Dodson, V. J. Jensen, S. B. Petersen, H. Swift, L. Thim, H. F. Woldike
Calcium Binding In Alpha-Amylases: An X-Ray Diffraction Study At 2. 1-A Resolution Of Two Enzymes From Aspergillus.
Biochemistry V. 29 6244 1990
PubMed-ID: 2207069  |  Reference-DOI: 10.1021/BI00478A019

(-) Compounds

Molecule 1 - ALPHA-AMYLASE
    Chains: A
    EC Number: 3.2.1.1
    Engineered: YES
    Organism Scientific: ASPERGILLUS NIGER
    Organism Taxid: 5061

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit : A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 2)

Asymmetric/Biological Unit (1, 2)
No.NameCountTypeFull Name
1CA2Ligand/IonCALCIUM ION

(-) Sites  (2, 2)

Asymmetric Unit (2, 2)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREASP A:121 , GLU A:162 , ASP A:175 , GLU A:210 , HOH A:495 , HOH A:499 , HOH A:590BINDING SITE FOR RESIDUE CA A 485
2AC2SOFTWAREASP A:206 , GLU A:230 , HOH A:507 , HOH A:599 , HOH A:789 , HOH A:800 , HOH A:801BINDING SITE FOR RESIDUE CA A 486

(-) SS Bonds  (4, 4)

Asymmetric/Biological Unit
No.Residues
1A:30 -A:38
2A:150 -A:164
3A:240 -A:283
4A:440 -A:475

(-) Cis Peptide Bonds  (2, 2)

Asymmetric/Biological Unit
No.Residues
1Asp A:138 -Pro A:139
2Val A:340 -Pro A:341

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (0, 0)

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

(-) Exons   (0, 0)

(no "Exon" information available for 2AAA)

(-) 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:476
 aligned with AMYA_ASPNG | P56271 from UniProtKB/Swiss-Prot  Length:484

    Alignment length:476
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       360       370       380       390       400       410       420       430       440       450       460       470      
           AMYA_ASPNG     1 LSAASWRTQSIYFLLTDRFGRTDNSTTATCNTGNEIYCGGSWQGIIDHLDYIEGMGFTAIWISPITEQLPQDTADGEAYHGYWQQKIYDVNSNFGTADNLKSLSDALHARGMYLMVDVVPDHMGYAGNGNDVDYSVFDPFDSSSYFHPYCLITDWDNLTMVEDCWEGDTIVSLPDLDTTETAVRTIWYDWVADLVSNYSVDGLRIDSVLEVQPDFFPGYNKASGVYCVGEIDNGNPASDCPYQKVLDGVLNYPIYWQLLYAFESSSGSISNLYNMIKSVASDCSDPTLLGNFIENHDNPRFAKYTSDYSQAKNVLSYIFLSDGIPIVYAGEEQHYAGGKVPYNREATWLSGYDTSAELYTWIATTNAIRKLAIAADSAYITYANDAFYTDSNTIAMAKGTSGSQVITVLSNKGSSGSSYTLTLSGSGYTSGTKLIEAYTCTSVTVDSSGDIPVPMASGLPRVLLPASVVDSSSLCG 476
               SCOP domains d2aaaa2 A:1-381 Fungal alpha-amylases                                                                                                                                                                                                                                                                                                                                                        d2aaaa1 A:382-476 Fungal alpha-amylase                                                          SCOP domains
               CATH domains 2aaaA01 A:1-374 Glycosidases                                                                                                                                                                                                                                                                                                                                                          2aaaA02 A:375-476 Golgi alpha-mannosidase II                                                           CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhh...eee.hhhhhh..........hhhhh.....hhhhhhhhhhhhhh....eeee...eee...............eeeeeee.....hhhhhhhhhhhhhh...eeeeee.........hhhhhhhhhh....hhhh...........hhhhhhhh.ee....ee......hhhhhhhhhhhhhhhhhhhh..eeee......hhhhhhhhhhhhh.eeee.....hhhhhhhhhhh..ee.hhhhhhhhhhhhh....hhhhhhhhhhhhhhhh.hhhh.ee........hhhhh..hhhhhhhhhhhhhhh..eeeee.................hhhhhh....hhhhhhhhhhhhhhhhhhhhh........eeeeee..eeeeee......eeeeee........eeeee.........eeee....eeee......eeeee.....eeeeehhhhh...... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2aaa A   1 LSAASWRTQSIYFLLTDRFGRTDNSTTATCNTGNEIYCGGSWQGIIDHLDYIEGMGFTAIWISPITEQLPQDTADGEAYHGYWQQKIYDVNSNFGTADNLKSLSDALHARGMYLMVDVVPDHMGYAGNGNDVDYSVFDPFDSSSYFHPYCLITDWDNLTMVEDCWEGDTIVSLPDLDTTETAVRTIWYDWVADLVSNYSVDGLRIDSVLEVQPDFFPGYNKASGVYCVGEIDNGNPASDCPYQKVLDGVLNYPIYWQLLYAFESSSGSISNLYNMIKSVASDCSDPTLLGNFIENHDNPRFAKYTSDYSQAKNVLSYIFLSDGIPIVYAGEEQHYAGGKVPYNREATWLSGYDTSAELYTWIATTNAIRKLAIAADSAYITYANDAFYTDSNTIAMAKGTSGSQVITVLSNKGSSGSSYTLTLSGSGYTSGTKLIEAYTCTSVTVDSSGDIPVPMASGLPRVLLPASVVDSSSLCG 476
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       360       370       380       390       400       410       420       430       440       450       460       470
   Legend:   → Mismatch (orange background)
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  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  (2, 2)

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

(-) CATH Domains  (2, 2)

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

(-) Pfam Domains  (0, 0)

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

(-) Gene Ontology  (10, 10)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (AMYA_ASPNG | P56271)
molecular function
    GO:0004556    alpha-amylase activity    Catalysis of the endohydrolysis of (1->4)-alpha-D-glucosidic linkages in polysaccharides containing three or more alpha-(1->4)-linked D-glucose units.
    GO:0005509    calcium ion binding    Interacting selectively and non-covalently with calcium ions (Ca2+).
    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: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:0016052    carbohydrate catabolic process    The chemical reactions and pathways resulting in the breakdown of carbohydrates, any of a group of organic compounds based of the general formula Cx(H2O)y.
    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: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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