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(-) Description

Title :  CRYSTAL STRUCTURE OF TOXOPLASMA GONDII MICRONEMAL PROTEIN 1 BOUND TO 6'-SIALYL-N-ACETYLLACTOSAMINE
 
Authors :  T. M. A. Blumenschein, N. Friedrich, R. A. Childs, S. Saouros, E. P. Carpenter, M. A. Campanero-Rhodes, P. Simpson, T. Koutroukides, M. J. Blackman, T. Feizi, D. Soldati-Favre, S. Matthews
Date :  20 Feb 07  (Deposition) - 22 May 07  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.07
Chains :  Asym./Biol. Unit :  A
Keywords :  Cell Adhesion, Mic1, Microneme, Mar Domain, Cell Invasion (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  T. M. A. Blumenschein, N. Friedrich, R. A. Childs, S. Saouros, E. P. Carpenter, M. A. Campanero-Rhodes, P. Simpson, W. Chai, T. Koutroukides, M. J. Blackman, T. Feizi, D. Soldati-Favre, S. Matthews
Atomic Resolution Insight Into Host Cell Recognition By Toxoplasma Gondii.
Embo J. V. 26 2808 2007
PubMed-ID: 17491595  |  Reference-DOI: 10.1038/SJ.EMBOJ.7601704

(-) Compounds

Molecule 1 - MICRONEMAL PROTEIN 1
    Chains: A
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PET
    Expression System Strain: ORIGAMI DE3
    Expression System Taxid: 562
    Fragment: N-TERMINAL DOMAIN, RESIDUES 17-262
    Organism Scientific: TOXOPLASMA GONDII
    Organism Taxid: 5811
    Synonym: MIC1

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit : A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (6, 21)

Asymmetric/Biological Unit (6, 21)
No.NameCountTypeFull Name
1ACT13Ligand/IonACETATE ION
2CL2Ligand/IonCHLORIDE ION
3GAL1Ligand/IonBETA-D-GALACTOSE
4GOL2Ligand/IonGLYCEROL
5MSE2Mod. Amino AcidSELENOMETHIONINE
6SIA1Ligand/IonO-SIALIC ACID

(-) Sites  (19, 19)

Asymmetric Unit (19, 19)
No.NameEvidenceResiduesDescription
01AC1SOFTWARELYS A:200 , HIS A:202 , TYR A:203 , THR A:204 , GAL A:1241 , HOH A:2146 , HOH A:2168BINDING SITE FOR RESIDUE SIA A1240
02AC2SOFTWARESIA A:1240 , HOH A:2169 , HOH A:2170BINDING SITE FOR RESIDUE GAL A1241
03AC3SOFTWAREGLN A:62 , HIS A:108 , ALA A:109 , THR A:110 , ARG A:111 , ACT A:1250BINDING SITE FOR RESIDUE ACT A1242
04AC4SOFTWARESER A:17 , ASP A:89 , ASP A:90 , CYS A:187 , GOL A:1244BINDING SITE FOR RESIDUE CL A1243
05AC5SOFTWARETYR A:130 , CYS A:181 , SER A:218 , CYS A:226 , HOH A:2155 , HOH A:2173BINDING SITE FOR RESIDUE ACT A1246
06AC6SOFTWAREPRO A:47 , SER A:49 , ARG A:210 , HOH A:2028 , HOH A:2174BINDING SITE FOR RESIDUE ACT A1247
07AC7SOFTWAREPRO A:96 , CYS A:97 , PRO A:98 , LEU A:170 , TYR A:171 , SER A:172BINDING SITE FOR RESIDUE ACT A1248
08AC8SOFTWAREASN A:86 , THR A:94 , LYS A:166BINDING SITE FOR RESIDUE ACT A1249
09AC9SOFTWARELYS A:43 , SER A:106 , HIS A:108 , ACT A:1242 , ACT A:1255BINDING SITE FOR RESIDUE ACT A1250
10BC1SOFTWAREGLU A:35 , ARG A:111 , ACT A:1255BINDING SITE FOR RESIDUE ACT A1251
11BC2SOFTWAREGLN A:62 , ARG A:111 , GLU A:113 , ILE A:114 , HOH A:2086BINDING SITE FOR RESIDUE CL A1252
12BC3SOFTWARESER A:74 , HIS A:102 , ASN A:105BINDING SITE FOR RESIDUE ACT A1253
13BC4SOFTWAREGLY A:92 , HOH A:2176BINDING SITE FOR RESIDUE ACT A1254
14BC5SOFTWARESER A:39 , LYS A:43 , ACT A:1250 , ACT A:1251BINDING SITE FOR RESIDUE ACT A1255
15BC6SOFTWAREARG A:19 , GLN A:22 , HOH A:2178BINDING SITE FOR RESIDUE ACT A1256
16BC7SOFTWAREGLU A:31 , TYR A:174 , ACT A:1258 , HOH A:2180BINDING SITE FOR RESIDUE ACT A1257
17BC8SOFTWAREALA A:16 , GLU A:31 , ACT A:1257 , HOH A:2181BINDING SITE FOR RESIDUE ACT A1258
18BC9SOFTWARESER A:17 , ASP A:90 , PHE A:126 , SER A:128 , TRP A:185 , CYS A:187 , ASP A:230 , CL A:1243 , HOH A:2071 , HOH A:2171BINDING SITE FOR RESIDUE GOL A1244
19CC1SOFTWARETYR A:20 , ASN A:155 , ASN A:156 , ASP A:230 , GLU A:231 , HOH A:2172BINDING SITE FOR RESIDUE GOL A1245

(-) SS Bonds  (9, 9)

Asymmetric/Biological Unit
No.Residues
1A:29 -A:69
2A:37 -A:45
3A:87 -A:97
4A:87 -A:97
5A:91 -A:127
6A:138 -A:163
7A:177 -A:187
8A:181 -A:226
9A:220 -A:236

(-) Cis Peptide Bonds  (1, 1)

Asymmetric/Biological Unit
No.Residues
1Asn A:232 -Pro A:233

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2JH7)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 2JH7)

(-) Exons   (0, 0)

(no "Exon" information available for 2JH7)

(-) 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:227
 aligned with MIC1_TOXGO | O00834 from UniProtKB/Swiss-Prot  Length:456

    Alignment length:227
                                    38        48        58        68        78        88        98       108       118       128       138       148       158       168       178       188       198       208       218       228       238       248       
           MIC1_TOXGO    29 HSPASGRYIQQMLDQRCQEIAAELCQSGLRKMCVPSSRIVARNAVGITHQNTLQWRCFDTASLLESNQENNGVNCVDDCGHTIPCPGGVHRQNSNHATRHEILSKLVEEGVQRFCSPYQASANKYCNDKFPGTIARRSKGFGNNVEVAWRCYEKASLLYSVYAECASNCGTTWYCPGGRRGTSTELDKRHYTEEEGIRQAIGSVDSPCSEVEVCLPKDENPPLCLDE 255
               SCOP domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
           Pfam domains (1) ----------------------------------------------------------------------------------------------------------------MAR_sialic_bdg-2jh7A01 A:125-216                                                            ----------------------- Pfam domains (1)
           Pfam domains (2) ----------------------------------------------------------------------------------------------------------------MAR_sialic_bdg-2jh7A02 A:125-216                                                            ----------------------- Pfam domains (2)
         Sec.struct. author .......hhhhhhhhhhhhhhhhhhh............eeeeee.........eeeeee............eeeee.....eeeeeeee......eee.hhhhhhhhhhhhhhh..hhhhhhhhhhhhh...eeeeeeee..eeeeeeeeeee....eeeeeeeee.....eeeeeee...........eee.hhhhhhhhh..........eee.......eee.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2jh7 A  13 HSPASGRYIQQmLDQRCQEIAAELCQSGLRKmCVPSSRIVARNAVGITHQNTLQWRCFDTASLLESNQENNGVNCVDDCGHTIPCPGGVHRQNSNHATRHEILSKLVEEGVQRFCSPYQASANKYCNDKFPGTIARRSKGFGNNVEVAWRCYEKASLLYSVYAECASNCGTTWYCPGGRRGTSTELDKRHYTEEEGIRQAIGSVDSPCSEVEVCLPKDENPPLCLDE 239
                                    22 |      32        42 |      52        62        72        82        92       102       112       122       132       142       152       162       172       182       192       202       212       222       232       
                                      24-MSE              44-MSE
   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 2JH7)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 2JH7)

(-) Pfam Domains  (1, 2)

Asymmetric/Biological Unit
(-)
Clan: no clan defined [family: MAR_sialic_bdg] (3)

(-) Gene Ontology  (6, 6)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (MIC1_TOXGO | O00834)
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:0005515    protein binding    Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
biological process
    GO:0007155    cell adhesion    The attachment of a cell, either to another cell or to an underlying substrate such as the extracellular matrix, via cell adhesion molecules.
    GO:0009405    pathogenesis    The set of specific processes that generate the ability of an organism to induce an abnormal, generally detrimental state in another organism.
cellular component
    GO:0031410    cytoplasmic vesicle    A vesicle found in the cytoplasm of a cell.
    GO:0020009    microneme    A small, elongated secretory organelle that forms part of the apical complex, located along the main axis of an apicomplexan parasite cell within the extreme apical region and at the periphery under the inner membrane complex. Of the specialized secretory compartments identified in apicomplexans, micronemes discharge their contents first, during initial contact of the parasite's apical pole with the host cell surface. Micronemal proteins function during parasite attachment and penetration into the target cell.

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 Related Entries

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

UniProtKB/Swiss-Prot
        MIC1_TOXGO | O00834: 2bvb 2jh1 2jhd 2k2s 3f53 3f5a 3f5e

(-) Related Entries Specified in the PDB File

2bvb THE C-TERMINAL DOMAIN FROM MICRONEMAL PROTEIN 1 (MIC1) FROM TOXOPLASMA GONDII
2jh1 CRYSTAL STRUCTURE OF TOXOPLASMA GONDII MICRONEMAL PROTEIN 1
2jhd CRYSTAL STRUCTURE OF TOXOPLASMA GONDII MICRONEMAL PROTEIN 1 BOUND TO 3'-SIALYL-N -ACETYLLACTOSAMINE