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(-) Description

Title :  CRYSTAL STRUCTURE OF TELOMERE CAPPING PROTEIN STN1 FROM SACCHAROMYCES CEREVISIAE
 
Authors :  A. D. Gelinas, F. E. Reyes, R. T. Batey, D. S. Wuttke
Date :  25 Sep 09  (Deposition) - 27 Oct 09  (Release) - 01 Dec 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.50
Chains :  Asym./Biol. Unit :  A
Keywords :  Winged Helix Turn Helix, Telomere Capping, Chromosomal Protein, Phosphoprotein, Telomere, Protein Binding (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  A. D. Gelinas, M. Paschini, F. E. Reyes, A. Heroux, R. T. Batey, V. Lundblad, D. S. Wuttke
Telomere Capping Proteins Are Structurally Related To Rpa With An Additional Telomere-Specific Domain.
Proc. Natl. Acad. Sci. Usa V. 106 19298 2009
PubMed-ID: 19884503  |  Reference-DOI: 10.1073/PNAS.0909203106
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - PROTEIN STN1
    Chains: A
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PET DUET
    Expression System Strain: BL21(DE3)
    Expression System Taxid: 562
    Expression System Vector Type: PLASMID
    Fragment: UNP RESIDUES 313-491
    Gene: D4456, STN1, YD8554.15, YDR082W
    Organism Common: YEAST
    Organism Scientific: SACCHAROMYCES CEREVISIAE
    Organism Taxid: 4932

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit : A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (0, 0)

(no "Ligand,Modified Residues,Ions" information available for 3K10)

(-) Sites  (0, 0)

(no "Site" information available for 3K10)

(-) SS Bonds  (1, 1)

Asymmetric/Biological Unit
No.Residues
1A:420 -A:420

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 3K10)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 3K10)

(-) PROSITE Motifs  (0, 0)

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(-) Exons   (0, 0)

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(-) 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    
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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:170
 aligned with STN1_YEAST | P38960 from UniProtKB/Swiss-Prot  Length:494

    Alignment length:179
                                   322       332       342       352       362       372       382       392       402       412       422       432       442       452       462       472       482         
           STN1_YEAST   313 TSAKSNLMLILLGLQMKEISNSDLYKLKEVRSVVTSLASFLFQQQNVGVMKSFDSLEKEAFRDLVNRLVSQGLIGLKDKTSETFDLLPLKNLFEYAEKRISVLMKLQCYTGTVQLSHVQEKLHLPYITTNGIVDVFKECLKRTKKQYPEVLKNWWIDLDPKNGMEDQNSGILLHLEYAA 491
               SCOP domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains -------------------------------------------------Stn1_C-3k10A01 A:362-491                                                                                                           Pfam domains
         Sec.struct. author ..hhhhhhhhhhh....eeehhhhhhhhhhhhhhhhhhhhhhhhh......hhhhhhhhhhhhhhhhhhh....eeee....eeehhhhhhhhhhhhhhhhhhhhhh..eeeeehhhhhhhh.....hhhhhhhhhhhhhhhhhhhh...eeeeeeee.---------.eeeeeeee.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3k10 A 313 TSAKSNLMLILLGLQMKEISNSDLYKLKEVRSVVTSLASFLFQQQNVGVMKSFDSLEKEAFRDLVNRLVSQGLIGLKDKTSETFDLLPLKNLFEYAEKRISVLMKLQCYTGTVQLSHVQEKLHLPYITTNGIVDVFKECLKRTKKQYPEVLKNWWIDLD---------SGILLHLEYAA 491
                                   322       332       342       352       362       372       382       392       402       412       422       432       442       452       462        |-       482         
                                                                                                                                                                                        471       481
   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  (0, 0)

(no "SCOP Domain" information available for 3K10)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3K10)

(-) Pfam Domains  (1, 1)

Asymmetric/Biological Unit
(-)
Clan: no clan defined [family: Stn1_C] (2)

(-) Gene Ontology  (7, 7)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (STN1_YEAST | P38960)
molecular function
    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).
    GO:0043047    single-stranded telomeric DNA binding    Interacting selectively and non-covalently with single-stranded telomere-associated DNA.
biological process
    GO:0032211    negative regulation of telomere maintenance via telomerase    Any process that stops, prevents, or reduces the frequency, rate or extent of the addition of telomeric repeats by telomerase.
    GO:0016233    telomere capping    A process in which telomeres are protected from degradation and fusion, thereby ensuring chromosome stability by protecting the ends from both degradation and from being recognized as damaged DNA. May be mediated by specific single- or double-stranded telomeric DNA binding proteins.
cellular component
    GO:1990879    CST complex    A complex formed by the association of Cdc13 (CTC1 in mammals) with Stn1 in yeast (OBFC1 in mammals) and Ten1 protein (also TEN1 in mammals) with single-stranded telomeric DNA. The CST complex plays a role in telomere protection.
    GO:0005694    chromosome    A structure composed of a very long molecule of DNA and associated proteins (e.g. histones) that carries hereditary information.
    GO:0000781    chromosome, telomeric region    The terminal region of a linear chromosome that includes the telomeric DNA repeats and associated proteins.

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 Related Entries

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

UniProtKB/Swiss-Prot
        STN1_YEAST | P38960: 3key

(-) Related Entries Specified in the PDB File

3k0x CRYSTAL STRUCTURE OF TELOMERE CAPPING PROTEIN TEN1 FROM SACCHAROMYCES POMBE