Show PDB file:   
         Plain Text   HTML   (compressed file size)
QuickSearch:   
by PDB,NDB,UniProt,PROSITE Code or Search Term(s)  
(-)Asymmetric Unit
(-)Asym. Unit - sites
(-)Biological Unit 1
(-)Biol. Unit 1 - sites
collapse expand < >
Image Asymmetric Unit
Asymmetric Unit  (Jmol Viewer)
Image Asym. Unit - sites
Asym. Unit - sites  (Jmol Viewer)
Image Biological Unit 1
Biological Unit 1  (Jmol Viewer)
Image Biol. Unit 1 - sites
Biol. Unit 1 - sites  (Jmol Viewer)

(-) Description

Title :  CRYSTAL STRUCTURE OF THE MYOSTATIN:FOLLISTATIN-LIKE 3 COMPLEX
 
Authors :  J. N. Cash, T. B. Thompson
Date :  10 Jun 11  (Deposition) - 02 Nov 11  (Release) - 10 Sep 14  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.40
Chains :  Asym. Unit :  B,C
Biol. Unit 1:  B,C  (2x)
Keywords :  Protein-Protein Complex, Tb Domain, Cystine Knot Motif, Tgf-Beta Fold, Disulfide Linked Dimer, Follistatin Domain (Fsd), Signaling Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  J. N. Cash, E. B. Angerman, C. Kattamuri, K. Nolan, H. Zhao, Y. Sidis, H. T. Keutmann, T. B. Thompson
Structure Of Myostatinfollistatin-Like 3: N-Terminal Domain Of Follistatin-Type Molecules Exhibit Alternate Modes Of Binding.
J. Biol. Chem. V. 287 1043 2012
PubMed-ID: 22052913  |  Reference-DOI: 10.1074/JBC.M111.270801

(-) Compounds

Molecule 1 - GROWTH/DIFFERENTIATION FACTOR 8
    ChainsB
    EngineeredYES
    Expression SystemCRICETULUS GRISEUS
    Expression System Taxid10029
    FragmentUNP RESIDUES 268-376
    GeneGDF8, MSTN, MYOSTATIN
    Organism CommonMOUSE
    Organism ScientificMUS MUSCULUS
    Organism Taxid10090
    SynonymGDF-8, MYOSTATIN
 
Molecule 2 - FOLLISTATIN-RELATED PROTEIN 3
    ChainsC
    EngineeredYES
    Expression SystemHOMO SAPIENS
    Expression System PlasmidPCDNA3.1
    Expression System StrainHEK293
    Expression System Taxid9606
    Expression System Vector TypePLASMID
    FragmentUNP RESIDUES 36-244
    GeneFLRG, FOLLISTATIN-LIKE 3, FSTL3, UNQ674/PRO1308
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    SynonymFOLLISTATIN-LIKE PROTEIN 3, FOLLISTATIN-RELATED GENE PROTEIN

 Structural Features

(-) Chains, Units

  12
Asymmetric Unit BC
Biological Unit 1 (2x)BC

Summary Information (see also Sequences/Alignments below)

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

Asymmetric Unit (1, 1)
No.NameCountTypeFull Name
1NAG1Ligand/IonN-ACETYL-D-GLUCOSAMINE
Biological Unit 1 (1, 2)
No.NameCountTypeFull Name
1NAG2Ligand/IonN-ACETYL-D-GLUCOSAMINE

(-) Sites  (1, 1)

Asymmetric Unit (1, 1)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREASN C:47BINDING SITE FOR RESIDUE NAG C 1

(-) SS Bonds  (18, 18)

Asymmetric Unit
No.Residues
1B:6 -B:16
2B:15 -B:74
3B:43 -B:106
4B:47 -B:108
5B:73 -B:73
6C:12 -C:35
7C:22 -C:66
8C:36 -C:69
9C:73 -C:84
10C:78 -C:93
11C:95 -C:127
12C:99 -C:120
13C:109 -C:141
14C:145 -C:156
15C:150 -C:166
16C:169 -C:203
17C:174 -C:196
18C:185 -C:217

(-) Cis Peptide Bonds  (2, 2)

Asymmetric Unit
No.Residues
1Ala B:34 -Pro B:35
2Arg C:152 -Pro C:153

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (3, 4)

Asymmetric Unit (3, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1TBPS51364 TGF-beta binding (TB) domain profile.FSTL3_HUMAN36-95  1C:10-69
2KAZAL_2PS51465 Kazal domain profile.FSTL3_HUMAN113-169
193-245
  2C:91-143
C:167-218
3TGF_BETA_1PS00250 TGF-beta family signature.GDF8_MOUSE299-314  1B:32-47
Biological Unit 1 (3, 8)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1TBPS51364 TGF-beta binding (TB) domain profile.FSTL3_HUMAN36-95  2C:10-69
2KAZAL_2PS51465 Kazal domain profile.FSTL3_HUMAN113-169
193-245
  4C:91-143
C:167-218
3TGF_BETA_1PS00250 TGF-beta family signature.GDF8_MOUSE299-314  2B:32-47

(-) Exons   (0, 0)

(no "Exon" information available for 3SEK)

(-) 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 B from PDB  Type:PROTEIN  Length:109
 aligned with GDF8_MOUSE | O08689 from UniProtKB/Swiss-Prot  Length:376

    Alignment length:109
                                   277       287       297       307       317       327       337       347       357       367         
           GDF8_MOUSE   268 DFGLDCDEHSTESRCCRYPLTVDFEAFGWDWIIAPKRYKANYCSGECEFVFLQKYPHTHLVHQANPRGSAGPCCTPTKMSPINMLYFNGKEQIIYGKIPAMVVDRCGCS 376
               SCOP domains d3sekb_ B: automated matches                                                                                  SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...............eee..eee........eee..eee..eee...........hhhhhhhhhh.......eeeeeeeeeeeeeee.....eeeeeeeeeeeeeeeee Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------TGF_BETA_1      -------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------- Transcript
                 3sek B   1 DFGLDCDEHSTESRCCRYPLTVDFEAFGWDWIIAPKRYKANYCSGECEFVFLQKYPHTHLVHQANPRGSAGPCCTPTKMSPINMLYFNGKEQIIYGKIPAMVVDRCGCS 109
                                    10        20        30        40        50        60        70        80        90       100         

Chain C from PDB  Type:PROTEIN  Length:201
 aligned with FSTL3_HUMAN | O95633 from UniProtKB/Swiss-Prot  Length:263

    Alignment length:209
                                    45        55        65        75        85        95       105       115       125       135       145       155       165       175       185       195       205       215       225       235         
          FSTL3_HUMAN    36 GVCWLQQGQEATCSLVLQTDVTRAECCASGNIDTAWSNLTHPGNKINLLGFLGLVHCLPCKDSCDGVECGPGKACRMLGGRPRCECAPDCSGLPARLQVCGSDGATYRDECELRAARCRGHPDLSVMYRGRCRKSCEHVVCPRPQSCVVDQTGSAHCVVCRAAPCPVPSSPGQELCGNNNVTYISSCHMRQATCFLGRSIGVRHAGSCA 244
               SCOP domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeee.----....eeee...hhhhhhh.....eeee.......hhhhhhhh.....ee.............eeee.----.eeee............eee....ee.hhhhhhhhhhh......eeee................eeee.....eeee................eee....ee.hhhhhhhhhhhhh....eeee.... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE TB  PDB: C:10-69 UniProt: 36-95                             -----------------KAZAL_2  PDB: C:91-143 UniProt: 113-169                  -----------------------KAZAL_2  PDB: C:167-218 UniProt: 193-245             PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3sek C  10 GVCWLQ----ATCSLVLQTDVTRAECCASGNIDTAWSNLTHPGNKINLLGFLGLVHCLPCKDSCDGVECGPGKACRM----PRCECAPDCSGLPARLQVCGSDGATYRDECELRAARCRGHPDLSVMYRGRCRKSCEHVVCPRPQSCVVDQTGSAHCVVCRAAPCPVPSSPGQELCGNNNVTYISSCHMRQATCFLGRSIGVRHAGSCA 218
                                 |   -|       29        39        49        59        69        79      |  - |      99       109       119       129       139       149       159       169       179       189       199       209         
                                15   20                                                                86   91                                                                                                                               

   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, 1)

Asymmetric Unit

(-) CATH Domains  (0, 0)

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

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 3SEK)

(-) Gene Ontology  (67, 70)

Asymmetric Unit(hide GO term definitions)
Chain B   (GDF8_MOUSE | O08689)
molecular function
    GO:0005125    cytokine activity    Functions to control the survival, growth, differentiation and effector function of tissues and cells.
    GO:0008083    growth factor activity    The function that stimulates a cell to grow or proliferate. Most growth factors have other actions besides the induction of cell growth or proliferation.
    GO:0008201    heparin binding    Interacting selectively and non-covalently with heparin, any member of a group of glycosaminoglycans found mainly as an intracellular component of mast cells and which consist predominantly of alternating alpha-(1->4)-linked D-galactose and N-acetyl-D-glucosamine-6-sulfate residues.
    GO:0042802    identical protein binding    Interacting selectively and non-covalently with an identical protein or proteins.
    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:0005102    receptor binding    Interacting selectively and non-covalently with one or more specific sites on a receptor molecule, a macromolecule that undergoes combination with a hormone, neurotransmitter, drug or intracellular messenger to initiate a change in cell function.
    GO:0005160    transforming growth factor beta receptor binding    Interacting selectively and non-covalently with the transforming growth factor beta receptor.
biological process
    GO:0060395    SMAD protein signal transduction    The cascade of processes by which a signal interacts with a receptor, causing a change in the activity of a SMAD protein, and ultimately effecting a change in the functioning of the cell.
    GO:0048468    cell development    The process whose specific outcome is the progression of the cell over time, from its formation to the mature structure. Cell development does not include the steps involved in committing a cell to a specific fate.
    GO:0071549    cellular response to dexamethasone stimulus    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a dexamethasone stimulus.
    GO:0040007    growth    The increase in size or mass of an entire organism, a part of an organism or a cell.
    GO:0046716    muscle cell cellular homeostasis    The cellular homeostatic process that preserves a muscle cell in a stable functional or structural state.
    GO:0046627    negative regulation of insulin receptor signaling pathway    Any process that stops, prevents, or reduces the frequency, rate or extent of insulin receptor signaling.
    GO:0033673    negative regulation of kinase activity    Any process that stops, prevents, or reduces the frequency, rate or extent of kinase activity, the catalysis of the transfer of a phosphate group, usually from ATP, to a substrate molecule.
    GO:0014741    negative regulation of muscle hypertrophy    Any process that stops, prevents, or reduces the frequency, rate, or extent of muscle hypertrophy.
    GO:0045662    negative regulation of myoblast differentiation    Any process that stops, prevents, or reduces the frequency, rate or extent of myoblast differentiation. A myoblast is a mononucleate cell type that, by fusion with other myoblasts, gives rise to the myotubes that eventually develop into skeletal muscle fibers.
    GO:2000818    negative regulation of myoblast proliferation    Any process that stops, prevents or reduces the frequency, rate or extent of myoblast proliferation.
    GO:0051898    negative regulation of protein kinase B signaling    Any process that stops, prevents, or reduces the frequency, rate or extent of protein kinase B signaling, a series of reactions mediated by the intracellular serine/threonine kinase protein kinase B.
    GO:1902725    negative regulation of satellite cell differentiation    Any process that stops, prevents or reduces the frequency, rate or extent of satellite cell differentiation.
    GO:1902723    negative regulation of skeletal muscle satellite cell proliferation    Any process that stops, prevents or reduces the frequency, rate or extent of satellite cell proliferation.
    GO:0048632    negative regulation of skeletal muscle tissue growth    Any process that stops, prevents, or reduces the frequency, rate or extent of skeletal muscle growth.
    GO:0022602    ovulation cycle process    A process involved in the sexual cycle seen in females, often with physiologic changes in the endometrium that recur at regular intervals during the reproductive years.
    GO:0002230    positive regulation of defense response to virus by host    Any host process that results in the promotion of antiviral immune response mechanisms, thereby limiting viral replication.
    GO:0098779    positive regulation of macromitophagy in response to mitochondrial depolarization    The macromitophagy process that is triggered by a detection of the loss of mitochondrial membrane potential.
    GO:0010862    positive regulation of pathway-restricted SMAD protein phosphorylation    Any process that increases the rate, frequency or extent of pathway-restricted SMAD protein phosphorylation. Pathway-restricted SMAD proteins and common-partner SMAD proteins are involved in the transforming growth factor beta receptor signaling pathways.
    GO:0045893    positive regulation of transcription, DNA-templated    Any process that activates or increases the frequency, rate or extent of cellular DNA-templated transcription.
    GO:0043408    regulation of MAPK cascade    Any process that modulates the frequency, rate or extent of signal transduction mediated by the MAP kinase (MAPK) cascade.
    GO:0042981    regulation of apoptotic process    Any process that modulates the occurrence or rate of cell death by apoptotic process.
    GO:0051602    response to electrical stimulus    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an electrical stimulus.
    GO:0043627    response to estrogen    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of stimulus by an estrogen, C18 steroid hormones that can stimulate the development of female sexual characteristics.
    GO:0045471    response to ethanol    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an ethanol stimulus.
    GO:0051384    response to glucocorticoid    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a glucocorticoid stimulus. Glucocorticoids are hormonal C21 corticosteroids synthesized from cholesterol with the ability to bind with the cortisol receptor and trigger similar effects. Glucocorticoids act primarily on carbohydrate and protein metabolism, and have anti-inflammatory effects.
    GO:0009629    response to gravity    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a gravitational stimulus.
    GO:0009408    response to heat    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a heat stimulus, a temperature stimulus above the optimal temperature for that organism.
    GO:0014850    response to muscle activity    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a muscle activity stimulus.
    GO:0033574    response to testosterone    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a testosterone stimulus.
    GO:0014732    skeletal muscle atrophy    A process, occurring in skeletal muscle, that is characterized by a decrease in protein content, fiber diameter, force production and fatigue resistance in response to different conditions such as starvation, aging and disuse.
    GO:0043403    skeletal muscle tissue regeneration    The regrowth of skeletal muscle tissue to repair injured or damaged muscle fibers in the postnatal stage.
    GO:0007179    transforming growth factor beta receptor signaling pathway    A series of molecular signals initiated by the binding of an extracellular ligand to a transforming growth factor beta receptor on the surface of a target cell, and ending with regulation of a downstream cellular process, e.g. transcription.
    GO:0098792    xenophagy    The macroautophagy process in which a region of cytoplasm containing an intracellular pathogen or some part of an intracellular pathogen (e.g. viral capsid) is enclosed in a double membrane bound autophagosome, which then fuses with the lysosome leading to degradation of the contents.
cellular component
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    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.
    GO:0005615    extracellular space    That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.

Chain C   (FSTL3_HUMAN | O95633)
molecular function
    GO:0048185    activin binding    Interacting selectively and non-covalently with activin, a dimer of inhibin-beta subunits.
    GO:0001968    fibronectin binding    Interacting selectively and non-covalently with a fibronectin, a group of related adhesive glycoproteins of high molecular weight found on the surface of animal cells, connective tissue matrices, and in extracellular fluids.
    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:0030325    adrenal gland development    The process whose specific outcome is the progression of the adrenal gland over time, from its formation to the mature structure. This gland can either be a discrete structure located bilaterally above each kidney, or a cluster of cells in the head kidney that perform the functions of the adrenal gland. In either case, this organ consists of two cells types, aminergic chromaffin cells and steroidogenic cortical cells.
    GO:0071248    cellular response to metal ion    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a metal ion stimulus.
    GO:0002244    hematopoietic progenitor cell differentiation    The process in which precursor cell type acquires the specialized features of a hematopoietic progenitor cell, a class of cell types including myeloid progenitor cells and lymphoid progenitor cells.
    GO:0001822    kidney development    The process whose specific outcome is the progression of the kidney over time, from its formation to the mature structure. The kidney is an organ that filters the blood and/or excretes the end products of body metabolism in the form of urine.
    GO:0030324    lung development    The process whose specific outcome is the progression of the lung over time, from its formation to the mature structure. In all air-breathing vertebrates the lungs are developed from the ventral wall of the oesophagus as a pouch which divides into two sacs. In amphibians and many reptiles the lungs retain very nearly this primitive sac-like character, but in the higher forms the connection with the esophagus becomes elongated into the windpipe and the inner walls of the sacs become more and more divided, until, in the mammals, the air spaces become minutely divided into tubes ending in small air cells, in the walls of which the blood circulates in a fine network of capillaries. In mammals the lungs are more or less divided into lobes, and each lung occupies a separate cavity in the thorax.
    GO:0008584    male gonad development    The process whose specific outcome is the progression of the male gonad over time, from its formation to the mature structure.
    GO:0030514    negative regulation of BMP signaling pathway    Any process that stops, prevents, or reduces the frequency, rate or extent of the BMP signaling pathway.
    GO:0032926    negative regulation of activin receptor signaling pathway    Any process that stops, prevents, or reduces the frequency, rate or extent of the activity of any activin receptor signaling pathway.
    GO:0045671    negative regulation of osteoclast differentiation    Any process that stops, prevents, or reduces the frequency, rate or extent of osteoclast differentiation.
    GO:0090101    negative regulation of transmembrane receptor protein serine/threonine kinase signaling pathway    Any process that decreases the rate, frequency, or extent of the series of molecular signals generated as a consequence of a transmembrane receptor serine/threonine kinase binding to its physiological ligand.
    GO:0001503    ossification    The formation of bone or of a bony substance, or the conversion of fibrous tissue or of cartilage into bone or a bony substance.
    GO:0022409    positive regulation of cell-cell adhesion    Any process that activates or increases the rate or extent of cell adhesion to another cell.
    GO:0045944    positive regulation of transcription from RNA polymerase II promoter    Any process that activates or increases the frequency, rate or extent of transcription from an RNA polymerase II promoter.
    GO:0006357    regulation of transcription from RNA polymerase II promoter    Any process that modulates the frequency, rate or extent of transcription from an RNA polymerase II promoter.
    GO:0006355    regulation of transcription, DNA-templated    Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.
    GO:0007283    spermatogenesis    The process of formation of spermatozoa, including spermatocytogenesis and spermiogenesis.
    GO:0006351    transcription, DNA-templated    The cellular synthesis of RNA on a template of DNA.
cellular component
    GO:0005794    Golgi apparatus    A compound membranous cytoplasmic organelle of eukaryotic cells, consisting of flattened, ribosome-free vesicles arranged in a more or less regular stack. The Golgi apparatus differs from the endoplasmic reticulum in often having slightly thicker membranes, appearing in sections as a characteristic shallow semicircle so that the convex side (cis or entry face) abuts the endoplasmic reticulum, secretory vesicles emerging from the concave side (trans or exit face). In vertebrate cells there is usually one such organelle, while in invertebrates and plants, where they are known usually as dictyosomes, there may be several scattered in the cytoplasm. The Golgi apparatus processes proteins produced on the ribosomes of the rough endoplasmic reticulum; such processing includes modification of the core oligosaccharides of glycoproteins, and the sorting and packaging of proteins for transport to a variety of cellular locations. Three different regions of the Golgi are now recognized both in terms of structure and function: cis, in the vicinity of the cis face, trans, in the vicinity of the trans face, and medial, lying between the cis and trans regions.
    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.
    GO:0005615    extracellular space    That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.
    GO:0044306    neuron projection terminus    The specialized, terminal region of a neuron projection such as an axon or a dendrite.
    GO:0005654    nucleoplasm    That part of the nuclear content other than the chromosomes or the nucleolus.
    GO:0005634    nucleus    A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.
    GO:0030141    secretory granule    A small subcellular vesicle, surrounded by a membrane, that is formed from the Golgi apparatus and contains a highly concentrated protein destined for secretion. Secretory granules move towards the periphery of the cell and upon stimulation, their membranes fuse with the cell membrane, and their protein load is exteriorized. Processing of the contained protein may take place in secretory granules.

 Visualization

(-) Interactive Views

Asymmetric Unit
  Complete Structure
    Jena3D(integrated viewing of ligand, site, SAP, PROSITE, SCOP information)
    WebMol | AstexViewer[tm]@PDBe
(Java Applets, require no local installation except for Java; loading may be slow)
    STRAP
(Java WebStart application, automatic local installation, requires Java; full application with system access!)
    RasMol
(require local installation)
    Molscript (VRML)
(requires installation of a VRML viewer; select preferred view via VRML and generate a mono or stereo PDF format file)
 
  Ligands, Modified Residues, Ions
    NAG  [ RasMol | Jena3D ]  +environment [ RasMol | Jena3D ]
 
  Sites
    AC1  [ RasMol ]  +environment [ RasMol ]
 
  Cis Peptide Bonds
    Ala B:34 - Pro B:35   [ RasMol ]  
    Arg C:152 - Pro C:153   [ RasMol ]  
 
Biological Unit
  Complete Structure
    Biological Unit 1  [ Jena3D ]

(-) Still Images

Jmol
  protein: cartoon or spacefill or dots and stick; nucleic acid: cartoon and stick; ligands: spacefill; active site: stick
Molscript
  protein, nucleic acid: cartoon; ligands: spacefill; active site: ball and stick

 Databases and Analysis Tools

(-) Databases

Access by PDB/NDB ID
  3sek
    Family and Domain InformationProDom | SYSTERS
    General Structural InformationGlycoscienceDB | MMDB | NDB | OCA | PDB | PDBe | PDBj | PDBsum | PDBWiki | PQS | PROTEOPEDIA
    Orientation in MembranesOPM
    Protein SurfaceSURFACE
    Secondary StructureDSSP (structure derived) | HSSP (homology derived)
    Structural GenomicsGeneCensus
    Structural NeighboursCE | VAST
    Structure ClassificationCATH | Dali | SCOP
    Validation and Original DataBMRB Data View | BMRB Restraints Grid | EDS | PROCHECK | RECOORD | WHAT_CHECK
 
Access by UniProt ID/Accession number
  FSTL3_HUMAN | O95633
    Comparative Protein Structure ModelsModBase
    Genomic InformationEnsembl
    Protein-protein InteractionDIP
    Sequence, Family and Domain InformationInterPro | Pfam | SMART | UniProtKB/SwissProt
  GDF8_MOUSE | O08689
    Comparative Protein Structure ModelsModBase
    Genomic InformationEnsembl
    Protein-protein InteractionDIP
    Sequence, Family and Domain InformationInterPro | Pfam | SMART | UniProtKB/SwissProt
 
Access by Enzyme Classificator   (EC Number)
  (no 'Enzyme Classificator' available)
    General Enzyme InformationBRENDA | EC-PDB | Enzyme | IntEnz
    PathwayKEGG | MetaCyc
 
Access by Disease Identifier   (MIM ID)
  (no 'MIM ID' available)
    Disease InformationOMIM
 
Access by GenAge ID
  (no 'GenAge ID' available)
    Age Related InformationGenAge

(-) Analysis Tools

Access by PDB/NDB ID
    Domain InformationXDom
    Interatomic Contacts of Structural UnitsCSU
    Ligand-protein ContactsLPC
    Protein CavitiescastP
    Sequence and Secondary StructurePDBCartoon
    Structure AlignmentSTRAP(Java WebStart application, automatic local installation, requires Java; full application with system access!)
    Structure and Sequence BrowserSTING
 
Access by UniProt ID/Accession number
  FSTL3_HUMAN | O95633
    Protein Disorder PredictionDisEMBL | FoldIndex | GLOBPLOT (for more information see DisProt)
  GDF8_MOUSE | O08689
    Protein Disorder PredictionDisEMBL | FoldIndex | GLOBPLOT (for more information see DisProt)

 Related Entries

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

UniProtKB/Swiss-Prot
        FSTL3_HUMAN | O956332kcx 3b4v
        GDF8_MOUSE | O086893hh2 5ji1

(-) Related Entries Specified in the PDB File

(no "Related Entries Specified in the PDB File" available for 3SEK)