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(-) Description

Title :  CRYSTAL STRUCTURE OF MOUSE ALPHA-1,4-N-ACETYLHEXOSAMINOTRANSFERASE (EXTL2) IN COMPLEX WITH UDPGLCNAC
 
Authors :  L. C. Pedersen, J. Dong, F. Taniguchi, H. Kitagawa, J. M. Krahn, L. G. Pedersen, K. Sugahara, M. Negishi
Date :  27 Feb 03  (Deposition) - 22 Apr 03  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.30
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A,B  (1x)
Biol. Unit 2:  A,B  (4x)
Keywords :  Rossmann Fold, Dxd Motif, Transferase (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  L. C. Pedersen, J. Dong, F. Taniguchi, H. Kitagawa, J. M. Krahn, L. G. Pedersen, K. Sugahara, M. Negishi
Crystal Structure Of An Alpha-1, 4-N-Acetylhexosaminyltransferase (Extl2), A Member Of The Exostosin Gene Family Involved In Heparan Sulfate Biosynthesis
J. Biol. Chem. V. 278 14420 2003
PubMed-ID: 12562774  |  Reference-DOI: 10.1074/JBC.M210532200
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - ALPHA-1,4-N-ACETYLHEXOSAMINYLTRANSFERASE EXTL2
    ChainsA, B
    EC Number2.4.1.-
    EngineeredYES
    Expression SystemESCHERICHIA COLI BL21(DE3)
    Expression System PlasmidPMAL-2C
    Expression System StrainBL21(DE3)
    Expression System Taxid469008
    Expression System Vector TypePLASMID
    FragmentCATALYTIC DOMAIN
    GeneEXTL2 OR EXTR2
    Organism CommonHOUSE MOUSE
    Organism ScientificMUS MUSCULUS
    Organism Taxid10090
    SynonymALPHA-GALNACT EXTL2, EXT-RELATED PROTEIN 2, EXOSTOSIN-LIKE 2

 Structural Features

(-) Chains, Units

  12
Asymmetric Unit AB
Biological Unit 1 (1x)AB
Biological Unit 2 (4x)AB

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (3, 6)

Asymmetric Unit (3, 6)
No.NameCountTypeFull Name
1EDO2Ligand/Ion1,2-ETHANEDIOL
2MN2Ligand/IonMANGANESE (II) ION
3UD12Ligand/IonURIDINE-DIPHOSPHATE-N-ACETYLGLUCOSAMINE
Biological Unit 1 (2, 4)
No.NameCountTypeFull Name
1EDO2Ligand/Ion1,2-ETHANEDIOL
2MN-1Ligand/IonMANGANESE (II) ION
3UD12Ligand/IonURIDINE-DIPHOSPHATE-N-ACETYLGLUCOSAMINE
Biological Unit 2 (2, 16)
No.NameCountTypeFull Name
1EDO8Ligand/Ion1,2-ETHANEDIOL
2MN-1Ligand/IonMANGANESE (II) ION
3UD18Ligand/IonURIDINE-DIPHOSPHATE-N-ACETYLGLUCOSAMINE

(-) Sites  (6, 6)

Asymmetric Unit (6, 6)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREASP A:153 , UD1 A:401 , HOH A:656 , HOH A:690 , HOH A:691BINDING SITE FOR RESIDUE MN A 600
2AC2SOFTWAREASP B:153 , UD1 B:400 , HOH B:654 , HOH B:683 , HOH B:684BINDING SITE FOR RESIDUE MN B 601
3AC3SOFTWAREGLN B:72 , THR B:73 , TYR B:74 , ARG B:76 , ASN B:101 , ASN B:130 , MET B:132 , ARG B:135 , ASP B:151 , ASP B:152 , ASP B:153 , LEU B:213 , ASN B:243 , ASP B:245 , ASP B:246 , HIS B:289 , ARG B:293 , MN B:601 , HOH B:602 , HOH B:642 , HOH B:654 , HOH B:673BINDING SITE FOR RESIDUE UD1 B 400
4AC4SOFTWAREGLN A:72 , THR A:73 , TYR A:74 , ARG A:76 , ASN A:101 , ASN A:130 , MET A:132 , ARG A:135 , ASP A:151 , ASP A:152 , ASP A:153 , LEU A:213 , GLY A:215 , ASP A:245 , ASP A:246 , HIS A:289 , ARG A:293 , MN A:600 , HOH A:617 , HOH A:630 , HOH A:690 , HOH A:691BINDING SITE FOR RESIDUE UD1 A 401
5AC5SOFTWAREPHE A:171 , GLN A:174 , PRO A:260 , ILE A:263 , HOH A:631 , GLN B:170BINDING SITE FOR RESIDUE EDO A 501
6AC6SOFTWAREGLN A:170 , PHE A:171 , PHE B:171 , GLN B:174 , PRO B:260 , ILE B:314 , HOH B:633BINDING SITE FOR RESIDUE EDO B 502

(-) SS Bonds  (2, 2)

Asymmetric Unit
No.Residues
1A:244 -A:296
2B:244 -B:296

(-) Cis Peptide Bonds  (4, 4)

Asymmetric Unit
No.Residues
1Gly A:116 -Pro A:117
2Phe A:321 -Pro A:322
3Gly B:116 -Pro B:117
4Phe B:321 -Pro B:322

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1ON6)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 1ON6)

(-) Exons   (3, 6)

Asymmetric Unit (3, 6)
 ENSEMBLUniProtKBPDB
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength
1.1aENSMUST000000295751aENSMUSE00000501817chr3:115710380-115710800421EXTL2_MOUSE-00--
1.3ENSMUST000000295753ENSMUSE00000901963chr3:115713540-11571361475EXTL2_MOUSE1-330--
1.6bENSMUST000000295756bENSMUSE00000587207chr3:115726925-115727352428EXTL2_MOUSE3-1461442A:63-146
B:62-146
84
85
1.7ENSMUST000000295757ENSMUSE00000174716chr3:115728243-11572831371EXTL2_MOUSE146-169242A:146-169
B:146-169
24
24
1.8cENSMUST000000295758cENSMUSE00000325875chr3:115729931-1157319342004EXTL2_MOUSE170-3301612A:170-327 (gaps)
B:170-327 (gaps)
158
158

(-) 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:254
 aligned with EXTL2_MOUSE | Q9ES89 from UniProtKB/Swiss-Prot  Length:330

    Alignment length:265
                                    72        82        92       102       112       122       132       142       152       162       172       182       192       202       212       222       232       242       252       262       272       282       292       302       312       322     
          EXTL2_MOUSE    63 ALDSFTLIMQTYNRTDLLLRLLNHYQAVPSLHKVIVVWNNVGEKGPEELWNSLGPHPIPVIFKPQTANKMRNRLQVFPEVETNAVLMVDDDTLISAQDLVFAFSIWQQFPDQIIGFVPRKHVSTSSGIYSYGGFELQTPGPGNGDQYSMVLIGASFFNSKYLELFQKQPAAVHALIDETQNCDDIAMNFLVTRHTGKPSGIFVKPINMVNLEKETNGYSGMWHRAEHFLQRSYCINKLVNIYDGMPLKYSNIMISQFGFPYANHK 327
               SCOP domains d1on6a_ A: Alpha-1,4-N-acetylhexosaminyltransferase (Alpha-GalNAcT EXTL2)                                                                                                                                                                                                 SCOP domains
               CATH domains 1on6A00 A:63-327 Spore Coat Polysaccharide Biosynthesis Protein SpsA; Chain A                                                                                                                                                                                             CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....eeeeeee..hhhhhhhhhhhhh....eeeeeeee.......hhhhhhhh......eeeee....hhhhhhh........eeeee...eeehhhhhhhhhhhhh.....eee..eeeeeeee..eeeee................ee...eeeeehhhhhhhhh.hhhhhhhhhhhh.hhhhhhhhhhhhhhh...eeee....eee..-----------..hhhhhhhhhhhhhhhhhh........eeeee......... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
           Transcript 1 (1) Exon 1.6b  PDB: A:63-146 UniProt: 3-146 [INCOMPLETE]                                -----------------------Exon 1.8c  PDB: A:170-327 (gaps) UniProt: 170-330 [INCOMPLETE]                                                                                                 Transcript 1 (1)
           Transcript 1 (2) -----------------------------------------------------------------------------------Exon 1.7  PDB: A:146-169-------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript 1 (2)
                 1on6 A  63 ALDSFTLIMQTYNRTDLLLRLLNHYQAVPSLHKVIVVWNNVGEKGPEELWNSLGPHPIPVIFKPQTANKMRNRLQVFPEVETNAVLMVDDDTLISAQDLVFAFSIWQQFPDQIIGFVPRKHVSTSSGIYSYGGFELQTPGPGNGDQYSMVLIGASFFNSKYLELFQKQPAAVHALIDETQNCDDIAMNFLVTRHTGKPSGIFVKPINMVNLE-----------RAEHFLQRSYCINKLVNIYDGMPLKYSNIMISQFGFPYANHK 327
                                    72        82        92       102       112       122       132       142       152       162       172       182       192       202       212       222       232       242       252       262       272 |       -   |   292       302       312       322     
                                                                                                                                                                                                                                             274         286                                         

Chain B from PDB  Type:PROTEIN  Length:257
 aligned with EXTL2_MOUSE | Q9ES89 from UniProtKB/Swiss-Prot  Length:330

    Alignment length:266
                                    71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321      
          EXTL2_MOUSE    62 SALDSFTLIMQTYNRTDLLLRLLNHYQAVPSLHKVIVVWNNVGEKGPEELWNSLGPHPIPVIFKPQTANKMRNRLQVFPEVETNAVLMVDDDTLISAQDLVFAFSIWQQFPDQIIGFVPRKHVSTSSGIYSYGGFELQTPGPGNGDQYSMVLIGASFFNSKYLELFQKQPAAVHALIDETQNCDDIAMNFLVTRHTGKPSGIFVKPINMVNLEKETNGYSGMWHRAEHFLQRSYCINKLVNIYDGMPLKYSNIMISQFGFPYANHK 327
               SCOP domains d1on6b_ B: Alpha-1,4-N-acetylhexosaminyltransferase (Alpha-GalNAcT EXTL2)                                                                                                                                                                                                  SCOP domains
               CATH domains 1on6B00 B:62-327 Spore Coat Polysaccharide Biosynthesis Protein SpsA; Chain A                                                                                                                                                                                              CATH domains
           Pfam domains (1) -----Glyco_transf_64-1on6B01 B:67-321                                                                                                                                                                                                                               ------ Pfam domains (1)
           Pfam domains (2) -----Glyco_transf_64-1on6B02 B:67-321                                                                                                                                                                                                                               ------ Pfam domains (2)
         Sec.struct. author hhhh.eeeeeee..hhhhhhhhhhhhh....eeeeeeee.......hhhhhhhh......eeeee....hhhhhhh........eeeee...eeehhhhhhhhhhhhhhh...eee..eeeeeeee..eeeee................ee...eeeeehhhhhhhhh.hhhhhhhhhhhh.hhhhhhhhhhhhhhh...eeee....eee....---------.hhhhhhhhhhhhhhhhhh.........eeeee......... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
           Transcript 1 (1) Exon 1.6b  PDB: B:62-146 UniProt: 3-146 [INCOMPLETE]                                 -----------------------Exon 1.8c  PDB: B:170-327 (gaps) UniProt: 170-330 [INCOMPLETE]                                                                                                 Transcript 1 (1)
           Transcript 1 (2) ------------------------------------------------------------------------------------Exon 1.7  PDB: B:146-169-------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript 1 (2)
                 1on6 B  62 SALDSFTLIMQTYNRTDLLLRLLNHYQAVPSLHKVIVVWNNVGEKGPEELWNSLGPHPIPVIFKPQTANKMRNRLQVFPEVETNAVLMVDDDTLISAQDLVFAFSIWQQFPDQIIGFVPRKHVSTSSGIYSYGGFELQTPGPGNGDQYSMVLIGASFFNSKYLELFQKQPAAVHALIDETQNCDDIAMNFLVTRHTGKPSGIFVKPINMVNLEKE---------RAEHFLQRSYCINKLVNIYDGMPLKYSNIMISQFGFPYANHK 327
                                    71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271    |    -    |  291       301       311       321      
                                                                                                                                                                                                                                                276       286                                         

   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  (1, 2)

Asymmetric Unit

(-) CATH Domains  (1, 2)

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

(-) Pfam Domains  (1, 2)

Asymmetric Unit
(-)
Clan: GT-A (172)

(-) Gene Ontology  (14, 14)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (EXTL2_MOUSE | Q9ES89)
molecular function
    GO:0035248    alpha-1,4-N-acetylgalactosaminyltransferase activity    Catalysis of the transfer of an N-acetylgalactosaminyl residue from UDP-N-acetyl-galactosamine to an acceptor molecule, forming an alpha-1,4 linkage.
    GO:0001888    glucuronyl-galactosyl-proteoglycan 4-alpha-N-acetylglucosaminyltransferase activity    Catalysis of the reaction: UDP-N-acetyl-D-glucosamine + beta-D-glucuronosyl-(1->3)-beta-D-galactosyl-(1->3)-beta-D-galactosyl-(1->4)-beta-D-xylosyl-proteoglycan = UDP + alpha-N-acetyl-D-glucosaminyl-(1->4)-beta-D-glucuronosyl-(1->3)-beta-D-galactosyl-(1->3)-beta-D-galactosyl-(1->4)-beta-D-xylosyl-proteoglycan.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0016740    transferase activity    Catalysis of the transfer of a group, e.g. a methyl group, glycosyl group, acyl group, phosphorus-containing, or other groups, from one compound (generally regarded as the donor) to another compound (generally regarded as the acceptor). Transferase is the systematic name for any enzyme of EC class 2.
    GO:0016757    transferase activity, transferring glycosyl groups    Catalysis of the transfer of a glycosyl group from one compound (donor) to another (acceptor).
biological process
    GO:0006044    N-acetylglucosamine metabolic process    The chemical reactions and pathways involving N-acetylglucosamine. The D isomer is a common structural unit of glycoproteins in plants, bacteria and animals; it is often the terminal sugar of an oligosaccharide group of a glycoprotein.
    GO:0019276    UDP-N-acetylgalactosamine metabolic process    The chemical reactions and pathways involving UDP-N-acetylgalactosamine, a substance composed of N-acetylgalactosamine, a common structural unit of oligosaccharides, in glycosidic linkage with uridine diphosphate.
    GO:0006024    glycosaminoglycan biosynthetic process    The chemical reactions and pathways resulting in the formation of glycosaminoglycans, any of a group of polysaccharides that contain amino sugars.
    GO:0015012    heparan sulfate proteoglycan biosynthetic process    The chemical reactions and pathways resulting in the formation of the heparan sulfate proteoglycan, a glycosaminoglycan with repeat unit consisting of alternating alpha-(1->4)-linked hexuronic acid and glucosamine residues; the former are a mixture of sulfated and nonsulfated D-glucuronic acid and L-iduronic acid; the L-iduronic acid is either sulfated or acetylated on its amino group as well as being sulfated on one of its hydroxyl groups; heparan sulfate chains are covalently linked to peptidyl-serine by a glycosidic attachment through the trisaccharide galactosyl-galactosyl-xylosyl to serine residues.
cellular component
    GO:0005783    endoplasmic reticulum    The irregular network of unit membranes, visible only by electron microscopy, that occurs in the cytoplasm of many eukaryotic cells. The membranes form a complex meshwork of tubular channels, which are often expanded into slitlike cavities called cisternae. The ER takes two forms, rough (or granular), with ribosomes adhering to the outer surface, and smooth (with no ribosomes attached).
    GO:0005789    endoplasmic reticulum membrane    The lipid bilayer surrounding the endoplasmic reticulum.
    GO:0070062    extracellular exosome    A vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.
    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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 Related Entries

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

UniProtKB/Swiss-Prot
        EXTL2_MOUSE | Q9ES891omx 1omz 1on8

(-) Related Entries Specified in the PDB File

1omx CRYSTAL STRUCTURE OF APO ENZYME
1omz CRYSTAL STRUCTURE OF ENZYME WITH UDPGALNAC BOUND
1on8 CRYSTAL STRUCTURE OF ENZYME WITH UDP AND ACCEPTOR SUBSTRATE ANALOG BOUND