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(-) Description

Title :  STRUCTURE OF EPAC2 IN COMPLEX WITH CYCLIC-AMP AND RAP
 
Authors :  H. Rehmann, E. Arias-Palomo, M. A. Hadders, F. Schwede, O. Llorca, J. L.
Date :  02 Mar 08  (Deposition) - 29 Jul 08  (Release) - 05 Feb 14  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.20
Chains :  Asym. Unit :  E,R
Biol. Unit 1:  E,R  (2x)
Biol. Unit 2:  E,R  (1x)
Keywords :  Epac, Rapgef4, Rap, Rap1B, Camp, Sp-Camps, Gef, Gunanine Nucleotide Exchange Factor, G-Protein, Gtp-Binding, Nucleotide-Binding, Signaling Protein Regulator-Gtp-Binding Protein Complex, Signaling Protein-Gtp-Binding Protein Complex (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  H. Rehmann, E. Arias-Palomo, M. A. Hadders, F. Schwede, O. Llorca, J. L. Bos
Structure Of Epac2 In Complex With A Cyclic Amp Analogue An Rap1B
Nature V. 455 124 2008
PubMed-ID: 18660803  |  Reference-DOI: 10.1038/NATURE07187
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - RAP GUANINE NUCLEOTIDE EXCHANGE FACTOR (GEF) 4
    ChainsE
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPGEX4T1
    Expression System StrainCK600K
    Expression System Taxid562
    Expression System Vector TypePLASMID
    FragmentUNP RESIDUES 306-993
    GeneRAPGEF4
    Organism CommonMOUSE
    Organism ScientificMUS MUSCULUS
    Organism Taxid10090
    Other DetailsGST FUSION
 
Molecule 2 - RAS-RELATED PROTEIN RAP-1B
    ChainsR
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPTAC
    Expression System StrainCK600K
    Expression System Taxid562
    Expression System Vector TypePLASMID
    FragmentUNP RESIDUES 1-167
    GeneRAP1B
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    SynonymGTP-BINDING PROTEIN SMG P21B, RAP1B

 Structural Features

(-) Chains, Units

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

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (2, 3)

Asymmetric Unit (2, 3)
No.NameCountTypeFull Name
1SO41Ligand/IonSULFATE ION
2SP12Ligand/Ion6-(6-AMINO-PURIN-9-YL)-2-THIOXO-TETRAHYDRO-2-FURO[3,2-D][1,3,2]DIOXAPHOSPHININE-2,7-DIOL
Biological Unit 1 (2, 6)
No.NameCountTypeFull Name
1SO42Ligand/IonSULFATE ION
2SP14Ligand/Ion6-(6-AMINO-PURIN-9-YL)-2-THIOXO-TETRAHYDRO-2-FURO[3,2-D][1,3,2]DIOXAPHOSPHININE-2,7-DIOL
Biological Unit 2 (2, 3)
No.NameCountTypeFull Name
1SO41Ligand/IonSULFATE ION
2SP12Ligand/Ion6-(6-AMINO-PURIN-9-YL)-2-THIOXO-TETRAHYDRO-2-FURO[3,2-D][1,3,2]DIOXAPHOSPHININE-2,7-DIOL

(-) Sites  (3, 3)

Asymmetric Unit (3, 3)
No.NameEvidenceResiduesDescription
1AC1SOFTWARESER R:11 , GLY R:12 , GLY R:13 , GLY R:15 , LYS R:16 , SER R:17 , ALA R:59 , HOH R:171BINDING SITE FOR RESIDUE SO4 R 168
2AC2SOFTWAREPHE E:367 , ILE E:388 , CYS E:395 , PHE E:403 , GLY E:404 , LEU E:406 , ALA E:407 , ARG E:414 , ALA E:415 , LEU E:449 , LYS E:450 , GLU E:451 , LYS E:489 , HOH E:1054 , HOH E:1077BINDING SITE FOR RESIDUE SP1 E 2
3AC3SOFTWAREASN E:368 , ILE E:388 , GLY E:392 , SER E:417 , GLN E:539 , SER E:541 , LYS E:556 , ASP E:594 , MET E:597 , MET E:598 , HOH E:1033 , HOH E:1052BINDING SITE FOR RESIDUE SP1 E 3

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 3CF6)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 3CF6)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 3CF6)

(-) PROSITE Motifs  (4, 4)

Asymmetric Unit (4, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1CNMP_BINDING_3PS50042 cAMP/cGMP binding motif profile.RPGF4_MOUSE43-146
356-457
  1-
E:338-439
2RASGEF_NTERPS50212 Ras guanine-nucleotide exchange factors N-terminal domain profile.RPGF4_MOUSE496-634  1E:478-612
3RASGEF_CATPS50009 Ras guanine-nucleotide exchange factors catalytic domain profile.RPGF4_MOUSE772-1009  1E:754-990
4RASGEFPS00720 Ras Guanine-nucleotide exchange factors domain signature.RPGF4_MOUSE921-950  1E:903-932
Biological Unit 1 (4, 8)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1CNMP_BINDING_3PS50042 cAMP/cGMP binding motif profile.RPGF4_MOUSE43-146
356-457
  2-
E:338-439
2RASGEF_NTERPS50212 Ras guanine-nucleotide exchange factors N-terminal domain profile.RPGF4_MOUSE496-634  2E:478-612
3RASGEF_CATPS50009 Ras guanine-nucleotide exchange factors catalytic domain profile.RPGF4_MOUSE772-1009  2E:754-990
4RASGEFPS00720 Ras Guanine-nucleotide exchange factors domain signature.RPGF4_MOUSE921-950  2E:903-932
Biological Unit 2 (4, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1CNMP_BINDING_3PS50042 cAMP/cGMP binding motif profile.RPGF4_MOUSE43-146
356-457
  1-
E:338-439
2RASGEF_NTERPS50212 Ras guanine-nucleotide exchange factors N-terminal domain profile.RPGF4_MOUSE496-634  1E:478-612
3RASGEF_CATPS50009 Ras guanine-nucleotide exchange factors catalytic domain profile.RPGF4_MOUSE772-1009  1E:754-990
4RASGEFPS00720 Ras Guanine-nucleotide exchange factors domain signature.RPGF4_MOUSE921-950  1E:903-932

(-) Exons   (6, 6)

Asymmetric Unit (6, 6)
 ENSEMBLUniProtKBPDB
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength
1.1eENST000003934361eENSE00001817232chr12:69004688-69004832145RAP1B_HUMAN-00--
1.3ENST000003934363ENSE00002170663chr12:69042479-6904256183RAP1B_HUMAN1-19191R:3-1917
1.4aENST000003934364aENSE00001621515chr12:69044180-6904424869RAP1B_HUMAN20-42231R:20-4223
1.5aENST000003934365aENSE00001207248chr12:69045775-6904583157RAP1B_HUMAN43-61191R:43-61 (gaps)19
1.6ENST000003934366ENSE00001673144chr12:69047892-69048032141RAP1B_HUMAN62-108471R:62-10847
1.7aENST000003934367aENSE00001755393chr12:69050086-69050229144RAP1B_HUMAN109-156481R:109-156 (gaps)48
1.8ENST000003934368ENSE00001207265chr12:69050881-69050997117RAP1B_HUMAN157-184281R:157-1648
1.9bENST000003934369bENSE00001937531chr12:69053060-690542871228RAP1B_HUMAN-00--

(-) 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 E from PDB  Type:PROTEIN  Length:627
 aligned with RPGF4_MOUSE | Q9EQZ6 from UniProtKB/Swiss-Prot  Length:1011

    Alignment length:681
                                   337       347       357       367       377       387       397       407       417       427       437       447       457       467       477       487       497       507       517       527       537       547       557       567       577       587       597       607       617       627       637       647       657       667       677       687       697       707       717       727       737       747       757       767       777       787       797       807       817       827       837       847       857       867       877       887       897       907       917       927       937       947       957       967       977       987       997      1007 
         RPGF4_MOUSE    328 MRMILRKPPGQRTVDDLEIIYDELLHIKALSHLSTTVKRELAGVLIFESHAKGGTVLFNQGEEGTSWYIILKGSVNVVIYGKGVVCTLHEGDDFGKLALVNDAPRAASIVLREDNCHFLRVDKEDFNRILRDVEANTVRLKEHDQDVLVLEKVPAGNRAANQGNSQPQQKYTVMSGTPEKILEHFLETIRLEPSLNEATDSVLNDFVMMHCVFMPNTQLCPALVAHYHAQPSQGTEQERMDYALNNKRRVIRLVLQWAAMYGDLLQEDDVAMAFLEEFYVSVSDDARMMAAFKEQLPELEKIVKQISEDAKAPQKKHKVLLQQFNTGDERAQKRQPIRGSDEVLFKVYCIDHTYTTIRVPVAASVKEVISAVADKLGSGEGLIIVKMNSGGEKVVLKSNDVSVFTTLTINGRLFACPREQFDSLTPLPEQEGPTTGTVGTFELMSSKDLAYQMTTYDWELFNCVHELELIYHTFGRHNFKKTTANLDLFLRRFNEIQFWVVTEVCLCSQLSKRVQLLKKFIKIAAHCKEYKNLNSFFAIVMGLSNVAVSRLALTWEKLPSKFKKFYAEFESLMDPSRNHRAYRLTAAKLEPPLIPFMPLLIKDMTFTHEGNKTFIDNLVNFEKMRMIANTARTVRYYRSQPFNPDAAQANKNHQDVRSYVRQLNVIDNQRTLSQMSHRLEP 1008
               SCOP domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhh..eeeee.....eee.......eeeeeee.eeeeee...eeeeeee...eehhhhhhhh.....eeee....eeeeeeehhhhhhhh.......eeeee..eeeeeeee.---------------..eeeeeehhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh......hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhh------------------------------........eeeeeee.....eeeeeee...hhhhhhhhhhhhhh....eeeeee.....eee.......hhhhh....eeeeee.hhhhhh..hhhhh.....hhhhhh..hhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhh..hhhhhhhhhhhhhhh......hhhhhhhhhhhhhhhh..ee..eeehhhhhhhhhhhhhhhhhh.....---------hhhhhhhhh......hhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) ----------------------------CNMP_BINDING_3  PDB: E:338-439 UniProt: 356-457                                                       --------------------------------------RASGEF_NTER  PDB: E:478-612 UniProt: 496-634                                                                                               -----------------------------------------------------------------------------------------------------------------------------------------RASGEF_CAT  PDB: E:754-990 UniProt: 772-1009                                                                                                                                                                                                  PROSITE (1)
                PROSITE (2) -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------RASGEF  PDB: E:903-932        ---------------------------------------------------------- PROSITE (2)
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                3cf6 E  310 MRMILRKPPGQRTVDDLEIIYDELLHIKALSHLSTTVKRELAGVLIFESHAKGGTVLFNQGEEGTSWYIILKGSVNVVIYGKGVVCTLHEGDDFGKLALVNDAPRAASIVLREDNCHFLRVDKEDFNRILRDVEANTVRLKEHDQDVLVLEKV---------------QKYTVMSGTPEKILEHFLETIRLEPSLNEATDSVLNDFVMMHCVFMPNTQLCPALVAHYHAQPSQGTEQERMDYALNNKRRVIRLVLQWAAMYGDLLQEDDVAMAFLEEFYVSVSDDARMMAAFKEQLPELEKIV------------------------------RQPIRGSDEVLFKVYCIDHTYTTIRVPVAASVKEVISAVADKLGSGEGLIIVKMNSGGEKVVLKSNDVSVFTTLTINGRLFACPREQFDSLTPLPEQEGPTTGTVGTFELMSSKDLAYQMTTYDWELFNCVHELELIYHTFGRHNFKKTTANLDLFLRRFNEIQFWVVTEVCLCSQLSKRVQLLKKFIKIAAHCKEYKNLNSFFAIVMGLSNVAVSRLALTWEKLPSKFKKFYAEFESLMDPSRNHRAYRLTAAKLEPPLIPFMPLLIKDMTFTHEGNKTFIDNLVNFEKMRMIANTARTVRYYRSQPFN---------HQDVRSYVRQLNVIDNQRTLSQMSHRLEP  990
                                   319       329       339       349       359       369       379       389       399       409       419       429       439       449       459  |      -       479       489       499       509       519       529       539       549       559       569       579       589       599       609  |      -         -         -   |   649       659       669       679       689       699       709       719       729       739       749       759       769       779       789       799       809       819       829       839       849       859       869       879       889       899       909       919       929       939       949  |      -  |    969       979       989 
                                                                                                                                                                                  462             478                                                                                                                                   612                            643                                                                                                                                                                                                                                                                                                                  952       962                            

Chain R from PDB  Type:PROTEIN  Length:150
 aligned with RAP1B_HUMAN | P61224 from UniProtKB/Swiss-Prot  Length:184

    Alignment length:162
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152       162  
         RAP1B_HUMAN      3 EYKLVVLGSGGVGKSALTVQFVQGIFVEKYDPTIEDSYRKQVEVDAQQCMLEILDTAGTEQFTAMRDLYMKNGQGFALVYSITAQSTFNDLQDLREQILRVKDTDDVPMILVGNKCDLEDERVVGKEQGQNLARQWNNCAFLESSAKSKINVNEIFYDLVRQ  164
               SCOP domains d3cf6r_ R: automated matches                                                                                                                                       SCOP domains
               CATH domains 3cf6R00 R:3-164 P-loop containing nucleoti     de triphosphate hydrolases                                                                                          CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author .eeeeee.....hhhhhhhhhhh...............eee.-----..eeeeee......hhhhhhhhhhhh.eeeeeee..hhhhhhhhhhhhhhhhhhh......eeeeee..........hhhhhhhh-------.eee.......hhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
               Transcript 1 Exon 1.3         Exon 1.4a  PDB: R:20-42Exon 1.5a          Exon 1.6  PDB: R:62-108 UniProt: 62-108        Exon 1.7a  PDB: R:109-156 (gaps)                Exon 1.8 Transcript 1
                3cf6 R    3 EYKLVVLGSGGVGKSALTVQFVQGIFVEKYDPTIEDSYRKQV-----QCMLEILDTAGTEQFTAMRDLYMKNGQGFALVYSITAQSTFNDLQDLREQILRVKDTDDVPMILVGNKCDLEDERVVGKEQGQNL-------AFLESSAKSKINVNEIFYDLVRQ  164
                                    12        22        32        42 |     |52        62        72        82        92       102       112       122       132 |     142       152       162  
                                                                    44    50                                                                                 134     142                      

   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  (1, 1)

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

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 3CF6)

(-) Gene Ontology  (35, 41)

Asymmetric Unit(hide GO term definitions)
Chain E   (RPGF4_MOUSE | Q9EQZ6)
molecular function
    GO:0017016    Ras GTPase binding    Interacting selectively and non-covalently with any member of the Ras superfamily of monomeric GTPases.
    GO:0005088    Ras guanyl-nucleotide exchange factor activity    Stimulates the exchange of guanyl nucleotides associated with a GTPase of the Ras superfamily. Under normal cellular physiological conditions, the concentration of GTP is higher than that of GDP, favoring the replacement of GDP by GTP in association with the GTPase.
    GO:0030552    cAMP binding    Interacting selectively and non-covalently with cAMP, the nucleotide cyclic AMP (adenosine 3',5'-cyclophosphate).
    GO:0005085    guanyl-nucleotide exchange factor activity    Stimulates the exchange of guanyl nucleotides associated with a GTPase. Under normal cellular physiological conditions, the concentration of GTP is higher than that of GDP, favoring the replacement of GDP by GTP in association with the GTPase.
    GO:0000166    nucleotide binding    Interacting selectively and non-covalently with a nucleotide, any compound consisting of a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the ribose or deoxyribose.
    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:0019933    cAMP-mediated signaling    Any intracellular signal transduction in which the signal is passed on within the cell via cyclic AMP (cAMP). Includes production of cAMP, and downstream effectors that further transmit the signal within the cell.
    GO:0017156    calcium ion regulated exocytosis    The release of intracellular molecules (e.g. hormones, matrix proteins) contained within a membrane-bounded vesicle by fusion of the vesicle with the plasma membrane of a cell, induced by a rise in cytosolic calcium-ion levels.
    GO:0006887    exocytosis    A process of secretion by a cell that results in the release of intracellular molecules (e.g. hormones, matrix proteins) contained within a membrane-bounded vesicle. Exocytosis can occur either by full fusion, when the vesicle collapses into the plasma membrane, or by a kiss-and-run mechanism that involves the formation of a transient contact, a pore, between a granule (for exemple of chromaffin cells) and the plasma membrane. The latter process most of the time leads to only partial secretion of the granule content. Exocytosis begins with steps that prepare vesicles for fusion with the membrane (tethering and docking) and ends when molecules are secreted from the cell.
    GO:0030073    insulin secretion    The regulated release of proinsulin from secretory granules (B granules) in the B cells of the pancreas; accompanied by cleavage of proinsulin to form mature insulin.
    GO:0035556    intracellular signal transduction    The process in which a signal is passed on to downstream components within the cell, which become activated themselves to further propagate the signal and finally trigger a change in the function or state of the cell.
    GO:0043547    positive regulation of GTPase activity    Any process that activates or increases the activity of a GTPase.
    GO:0017157    regulation of exocytosis    Any process that modulates the frequency, rate or extent of exocytosis.
    GO:0007264    small GTPase mediated signal transduction    Any series of molecular signals in which a small monomeric GTPase relays one or more of the signals.
cellular component
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    GO:0005829    cytosol    The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.

Chain R   (RAP1B_HUMAN | P61224)
molecular function
    GO:0019003    GDP binding    Interacting selectively and non-covalently with GDP, guanosine 5'-diphosphate.
    GO:0005525    GTP binding    Interacting selectively and non-covalently with GTP, guanosine triphosphate.
    GO:0003924    GTPase activity    Catalysis of the reaction: GTP + H2O = GDP + phosphate.
    GO:0000166    nucleotide binding    Interacting selectively and non-covalently with a nucleotide, any compound consisting of a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the ribose or deoxyribose.
    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:0032403    protein complex binding    Interacting selectively and non-covalently with any protein complex (a complex of two or more proteins that may include other nonprotein molecules).
biological process
    GO:0032486    Rap protein signal transduction    A series of molecular signals within the cell that are mediated by a member of the Rap family of proteins switching to a GTP-bound active state.
    GO:0071320    cellular response to cAMP    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 cAMP (cyclic AMP, adenosine 3',5'-cyclophosphate) stimulus.
    GO:0061028    establishment of endothelial barrier    The establishment of a barrier between endothelial cell layers, such as those in the brain, lung or intestine, to exert specific and selective control over the passage of water and solutes, thus allowing formation and maintenance of compartments that differ in fluid and solute composition.
    GO:0030033    microvillus assembly    Formation of a microvillus, a thin cylindrical membrane-covered projection on the surface of a cell.
    GO:1901888    regulation of cell junction assembly    Any process that modulates the frequency, rate or extent of cell junction assembly.
    GO:2000114    regulation of establishment of cell polarity    Any process that modulates the frequency, rate or extent of establishment of cell polarity.
    GO:0007165    signal transduction    The cellular process in which a signal is conveyed to trigger a change in the activity or state of a cell. Signal transduction begins with reception of a signal (e.g. a ligand binding to a receptor or receptor activation by a stimulus such as light), or for signal transduction in the absence of ligand, signal-withdrawal or the activity of a constitutively active receptor. Signal transduction ends with regulation of a downstream cellular process, e.g. regulation of transcription or regulation of a metabolic process. Signal transduction covers signaling from receptors located on the surface of the cell and signaling via molecules located within the cell. For signaling between cells, signal transduction is restricted to events at and within the receiving cell.
    GO:0007264    small GTPase mediated signal transduction    Any series of molecular signals in which a small monomeric GTPase relays one or more of the signals.
cellular component
    GO:0030054    cell junction    A cellular component that forms a specialized region of connection between two or more cells or between a cell and the extracellular matrix. At a cell junction, anchoring proteins extend through the plasma membrane to link cytoskeletal proteins in one cell to cytoskeletal proteins in neighboring cells or to proteins in the extracellular matrix.
    GO:0005911    cell-cell junction    A cell junction that forms a connection between two or more cells in a multicellular organism; excludes direct cytoplasmic junctions such as ring canals.
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    GO:0005829    cytosol    The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
    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:0005622    intracellular    The living contents of a cell; the matter contained within (but not including) the plasma membrane, usually taken to exclude large vacuoles and masses of secretory or ingested material. In eukaryotes it includes the nucleus and cytoplasm.
    GO:0005811    lipid droplet    An intracellular non-membrane-bounded organelle comprising a matrix of coalesced lipids surrounded by a phospholipid monolayer. May include associated proteins.
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0045121    membrane raft    Any of the small (10-200 nm), heterogeneous, highly dynamic, sterol- and sphingolipid-enriched membrane domains that compartmentalize cellular processes. Small rafts can sometimes be stabilized to form larger platforms through protein-protein and protein-lipid interactions.
    GO:0005886    plasma membrane    The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

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 Related Entries

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

UniProtKB/Swiss-Prot
        RAP1B_HUMAN | P612243brw 4dxa 4hdo 4hdq 4m8n 4mgi 4mgk 4mgy 4mgz 4mh0 5kho
        RPGF4_MOUSE | Q9EQZ61o7f 2byv 4f7z 4mgi 4mgk 4mgy 4mgz 4mh0

(-) Related Entries Specified in the PDB File

2byv INACTIVE EPAC2