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(-) Description

Title :  CRYSTAL STRUCTURE OF HUMAN LIVER 6-PHOSPHOFRUCTO-2-KINASE/FRUCTOSE-2, 6-BISPHOSPHATASE
 
Authors :  Y. H. Lee, Y. Li, K. Uyeda, C. A. Hasemann
Date :  16 Oct 01  (Deposition) - 11 Dec 02  (Release) - 07 Mar 12  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.40
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A  (2x)
Biol. Unit 2:  B  (2x)
Keywords :  Tissue Differentiation, Isoform, Domain Stability, Transferase, Hydrolase (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  Y. H. Lee, Y. Li, K. Uyeda, C. A. Hasemann
Tissue-Specific Structure/Function Differentiation Of The Liver Isoform Of 6-Phosphofructo-2-Kinase/Fructose-2, 6-Bisphosphatase.
J. Biol. Chem. V. 278 523 2003
PubMed-ID: 12379646  |  Reference-DOI: 10.1074/JBC.M209105200

(-) Compounds

Molecule 1 - 6-PHOSPHOFRUCTO-2-KINASE/FRUCTOSE-2,6-BIPHOSPHATASE 2- PHOSPHATASE
    ChainsA, B
    EC Number2.7.1.105, 3.1.3.46
    EngineeredYES
    Expression SystemESCHERICHIA COLI BL21(DE3)
    Expression System PlasmidPET3C
    Expression System StrainBL21DE3
    Expression System Taxid469008
    Expression System Vector TypePLASMID
    MutationYES
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606

 Structural Features

(-) Chains, Units

  12
Asymmetric Unit AB
Biological Unit 1 (2x)A 
Biological Unit 2 (2x) B

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (2, 6)

Asymmetric Unit (2, 6)
No.NameCountTypeFull Name
1AGS2Ligand/IonPHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
2PO44Ligand/IonPHOSPHATE ION
Biological Unit 1 (2, 6)
No.NameCountTypeFull Name
1AGS2Ligand/IonPHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
2PO44Ligand/IonPHOSPHATE ION
Biological Unit 2 (2, 6)
No.NameCountTypeFull Name
1AGS2Ligand/IonPHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
2PO44Ligand/IonPHOSPHATE ION

(-) Sites  (6, 6)

Asymmetric Unit (6, 6)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREARG A:257 , HIS A:258 , ASN A:264 , ARG A:307 , GLU A:327 , HIS A:392 , GLN A:393 , HOH A:742BINDING SITE FOR RESIDUE PO4 A 501
2AC2SOFTWARETYR A:338 , ARG A:352 , LYS A:356 , TYR A:367 , GLN A:393 , ARG A:397 , HOH A:637 , HOH A:639 , HOH A:664BINDING SITE FOR RESIDUE PO4 A 502
3AC3SOFTWAREALA A:51 , ARG A:52 , GLY A:53 , LYS A:54 , THR A:55 , TYR A:56 , ASP A:130 , SER A:158 , ASN A:169 , GLN A:172 , VAL A:173 , LYS A:174 , VAL A:222 , VAL A:248 , TYR A:429 , HOH A:603 , HOH A:658BINDING SITE FOR RESIDUE AGS A 503
4AC4SOFTWAREARG B:257 , HIS B:258 , ASN B:264 , ARG B:307 , GLU B:327 , HIS B:392 , GLN B:393 , HOH B:613 , HOH B:636BINDING SITE FOR RESIDUE PO4 B 501
5AC5SOFTWARETYR B:338 , ARG B:352 , LYS B:356 , TYR B:367 , GLN B:393 , ARG B:397 , HOH B:608 , HOH B:734BINDING SITE FOR RESIDUE PO4 B 502
6AC6SOFTWAREALA B:51 , ARG B:52 , GLY B:53 , LYS B:54 , THR B:55 , TYR B:56 , ASP B:130 , SER B:158 , ASN B:169 , GLN B:172 , VAL B:173 , LYS B:174 , VAL B:222 , TYR B:429 , HOH B:614 , HOH B:628 , HOH B:646 , HOH B:647 , HOH B:684BINDING SITE FOR RESIDUE AGS B 503

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1K6M)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1K6M)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1K6M)

(-) PROSITE Motifs  (1, 2)

Asymmetric Unit (1, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1PG_MUTASEPS00175 Phosphoglycerate mutase family phosphohistidine signature.F261_HUMAN256-265
 
  2A:255-264
B:255-264
Biological Unit 1 (1, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1PG_MUTASEPS00175 Phosphoglycerate mutase family phosphohistidine signature.F261_HUMAN256-265
 
  2A:255-264
-
Biological Unit 2 (1, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1PG_MUTASEPS00175 Phosphoglycerate mutase family phosphohistidine signature.F261_HUMAN256-265
 
  2-
B:255-264

(-) Exons   (13, 26)

Asymmetric Unit (13, 26)
 ENSEMBLUniProtKBPDB
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength
1.1ENST000003750061ENSE00001039642X:55020511-55020344168F261_HUMAN1-33330--
1.2ENST000003750062ENSE00001278630X:54989815-54989690126F261_HUMAN33-75432A:39-74
B:39-74
36
36
1.3aENST000003750063aENSE00001138192X:54987350-5498725794F261_HUMAN75-106322A:74-105
B:74-105
32
32
1.4ENST000003750064ENSE00001138182X:54986326-5498626067F261_HUMAN106-128232A:105-127
B:105-127
23
23
1.5ENST000003750065ENSE00001138173X:54985358-5498528475F261_HUMAN129-153252A:128-152
B:128-152
25
25
1.6ENST000003750066ENSE00001138167X:54984795-5498473957F261_HUMAN154-172192A:153-171
B:153-171
19
19
1.7ENST000003750067ENSE00001039648X:54982707-54982586122F261_HUMAN173-213412A:172-212
B:172-212
41
41
1.8ENST000003750068ENSE00001039652X:54978545-54978338208F261_HUMAN213-282702A:212-281
B:212-281
70
70
1.9ENST000003750069ENSE00001138149X:54975654-54975508147F261_HUMAN283-331492A:282-330
B:282-330
49
49
1.10ENST0000037500610ENSE00001672492X:54971976-54971872105F261_HUMAN332-366352A:331-365
B:331-365
35
35
1.11ENST0000037500611ENSE00001613745X:54964157-54964028130F261_HUMAN367-410442A:366-409
B:366-409
44
44
1.12ENST0000037500612ENSE00000671730X:54961442-5496138063F261_HUMAN410-431222A:409-430
B:409-430
22
22
1.13ENST0000037500613ENSE00001666471X:54960318-5496025465F261_HUMAN431-452222A:430-451
B:430-451
22
22
1.14bENST0000037500614bENSE00001908241X:54959895-54959394502F261_HUMAN453-471192A:452-470
B:452-470
19
19

(-) 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:432
 aligned with F261_HUMAN | P16118 from UniProtKB/Swiss-Prot  Length:471

    Alignment length:432
                                    49        59        69        79        89        99       109       119       129       139       149       159       169       179       189       199       209       219       229       239       249       259       269       279       289       299       309       319       329       339       349       359       369       379       389       399       409       419       429       439       449       459       469  
           F261_HUMAN    40 NSPTMVIMVGLPARGKTYISTKLTRYLNWIGTPTKVFNLGQYRREAVSYKNYEFFLPDNMEALQIRKQCALAALKDVHNYLSHEEGHVAVFDATNTTRERRSLILQFAKEHGYKVFFIESICNDPGIIAENIRQVKLGSPDYIDCDREKVLEDFLKRIECYEVNYQPLDEELDSHLSYIKIFDVGTRYMVNRVQDHIQSRTVYYLMNIHVTPRSIYLCRHGESELNIRGRIGGDSGLSVRGKQYAYALANFIQSQGISSLKVWTSHMKRTIQTAEALGVPYEQWKALNEIDAGVCEEMTYEEIQEHYPEEFALRDQDKYRYRYPKGESYEDLVQRLEPVIMELERQENVLVICHQAVMRCLLAYFLDKSSDELPYLKCPLHTVLKLTPVAYGCKVESIYLNVEAVNTHREKPENVDITREPEEALDTVPAHY 471
               SCOP domains d1k6ma1 A:39-251 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase, kinase domain                                                                                                                                 d1k6ma2 A:252-470 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase, phosphatase domain                                                                                                                                  SCOP domains
               CATH domains -1k6mA01 A:40-244 P-loop containing nucleotide triphosphate hydrolases                                                                                                                                        ----1k6mA02 A:249-469 Phosphoglycerate mutase-like                                                                                                                                                                               - CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ...eeeeee.....hhhhhhhhhhhhhhhh...eeeeehhhhhhh.....hhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhh....eeeee....hhhhhhhhhhhhhhhh.eeeeeeee..hhhhhhhhhhhhhh.........hhhhhhhhhhhhhhhhh..............eeeee....eeeee...hhhhhhhhhhhh........eeeee...hhhhhh.........hhhhhhhhhhhhhhhhhh.....eeee..hhhhhhhhhh.....ee.hhhh...hhhhh..hhhhhhhhhhhhhhhhhhh..........hhhhhhhhhhhhhhhhhhh..eeeeehhhhhhhhhhhhhh....hhhhh.....eeeeeee....eeeeeee....................hhhhhhh...... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------PG_MUTASE -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
           Transcript 1 (1) Exon 1.2  PDB: A:39-74 [INCOMPLETE] ------------------------------Exon 1.4  PDB: A:105-12Exon 1.5  PDB: A:128-152 Exon 1.6           Exon 1.7  PDB: A:172-212 UniProt: 173-213---------------------------------------------------------------------Exon 1.9  PDB: A:282-330 UniProt: 283-331        Exon 1.10  PDB: A:331-365          Exon 1.11  PDB: A:366-409 UniProt: 367-410  --------------------Exon 1.13             Exon 1.14b          Transcript 1 (1)
           Transcript 1 (2) -----------------------------------Exon 1.3a  PDB: A:74-105        ----------------------------------------------------------------------------------------------------------Exon 1.8  PDB: A:212-281 UniProt: 213-282                             -------------------------------------------------------------------------------------------------------------------------------Exon 1.12             ---------------------------------------- Transcript 1 (2)
                 1k6m A  39 NSPTMVIMVGLPARGKTYISTKLTRYLNFIGTPTKVFNLGQYRREAVSYKNYEFFLPDNMEALQIRKQCALAALKDVHNYLSHEEGHVAVFDATNTTRERRSLILQFAKEHGYKVFFIESICNDPGIIAENIRQVKLGSPDYIDCDREKVLEDFLKRIECYEVNYQPLDEELDSHLSYIKIFDVGTRYMVNRVQDHIQSRTVYYLMNIHVTPRSIYLCRHGESELNIRGRIGGDSGLSVRGKQYAYALANFIQSQGISSLKVFTSRMKRTIQTAEALGVPYEQFKALNEIDAGVCEEMTYEEIQEHYPEEFALRDQDKYRYRYPKGESYEDLVQRLEPVIMELERQENVLVICHQAVMRCLLAYFLDKSSEELPYLKCPLHTVLKLTPVAYGCKVESIYLNVEAVNTHREKPENVDITREPEEALDTVPAHY 470
                                    48        58        68        78        88        98       108       118       128       138       148       158       168       178       188       198       208       218       228       238       248       258       268       278       288       298       308       318       328       338       348       358       368       378       388       398       408       418       428       438       448       458       468  

Chain B from PDB  Type:PROTEIN  Length:432
 aligned with F261_HUMAN | P16118 from UniProtKB/Swiss-Prot  Length:471

    Alignment length:432
                                    49        59        69        79        89        99       109       119       129       139       149       159       169       179       189       199       209       219       229       239       249       259       269       279       289       299       309       319       329       339       349       359       369       379       389       399       409       419       429       439       449       459       469  
           F261_HUMAN    40 NSPTMVIMVGLPARGKTYISTKLTRYLNWIGTPTKVFNLGQYRREAVSYKNYEFFLPDNMEALQIRKQCALAALKDVHNYLSHEEGHVAVFDATNTTRERRSLILQFAKEHGYKVFFIESICNDPGIIAENIRQVKLGSPDYIDCDREKVLEDFLKRIECYEVNYQPLDEELDSHLSYIKIFDVGTRYMVNRVQDHIQSRTVYYLMNIHVTPRSIYLCRHGESELNIRGRIGGDSGLSVRGKQYAYALANFIQSQGISSLKVWTSHMKRTIQTAEALGVPYEQWKALNEIDAGVCEEMTYEEIQEHYPEEFALRDQDKYRYRYPKGESYEDLVQRLEPVIMELERQENVLVICHQAVMRCLLAYFLDKSSDELPYLKCPLHTVLKLTPVAYGCKVESIYLNVEAVNTHREKPENVDITREPEEALDTVPAHY 471
               SCOP domains d1k6mb1 B:39-251 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase, kinase domain                                                                                                                                 d1k6mb2 B:252-470 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase, phosphatase domain                                                                                                                                  SCOP domains
               CATH domains -1k6mB01 B:40-244 P-loop containing nucleotide triphosphate hydrolases                                                                                                                                        ----1k6mB02 B:249-469 Phosphoglycerate mutase-like                                                                                                                                                                               - CATH domains
           Pfam domains (1) 6PF2K-1k6mB01 B:39-250                                                                                                                                                                                              -His_Phos_1-1k6mB03 B:252-399                                                                                                                        ----------------------------------------------------------------------- Pfam domains (1)
           Pfam domains (2) 6PF2K-1k6mB02 B:39-250                                                                                                                                                                                              -His_Phos_1-1k6mB04 B:252-399                                                                                                                        ----------------------------------------------------------------------- Pfam domains (2)
         Sec.struct. author ...eeeeee.....hhhhhhhhhhhhhhhh...eeeeehhhhhhh.....hhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhh....eeeee....hhhhhhhhhhhhhhhh.eeeeeeee..hhhhhhhhhhhhhh..........hhhhhhhhhhhhhhhh..............eeeee....eeeee...hhhhhhhhhhhh........eeeee...hhhhhh.........hhhhhhhhhhhhhhhhhhh....eeee..hhhhhhhhhh.....ee.hhhh...hhhhh..hhhhhhhhhhhhhhhhhhh..........hhhhhhhhhhhhhhhhhhh..eeeeehhhhhhhhhhhhhh....hhhhh.....eeeeeee....eeeeeee....................hhhhhhh...... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------PG_MUTASE -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
           Transcript 1 (1) Exon 1.2  PDB: B:39-74 [INCOMPLETE] ------------------------------Exon 1.4  PDB: B:105-12Exon 1.5  PDB: B:128-152 Exon 1.6           Exon 1.7  PDB: B:172-212 UniProt: 173-213---------------------------------------------------------------------Exon 1.9  PDB: B:282-330 UniProt: 283-331        Exon 1.10  PDB: B:331-365          Exon 1.11  PDB: B:366-409 UniProt: 367-410  --------------------Exon 1.13             Exon 1.14b          Transcript 1 (1)
           Transcript 1 (2) -----------------------------------Exon 1.3a  PDB: B:74-105        ----------------------------------------------------------------------------------------------------------Exon 1.8  PDB: B:212-281 UniProt: 213-282                             -------------------------------------------------------------------------------------------------------------------------------Exon 1.12             ---------------------------------------- Transcript 1 (2)
                 1k6m B  39 NSPTMVIMVGLPARGKTYISTKLTRYLNFIGTPTKVFNLGQYRREAVSYKNYEFFLPDNMEALQIRKQCALAALKDVHNYLSHEEGHVAVFDATNTTRERRSLILQFAKEHGYKVFFIESICNDPGIIAENIRQVKLGSPDYIDCDREKVLEDFLKRIECYEVNYQPLDEELDSHLSYIKIFDVGTRYMVNRVQDHIQSRTVYYLMNIHVTPRSIYLCRHGESELNIRGRIGGDSGLSVRGKQYAYALANFIQSQGISSLKVFTSRMKRTIQTAEALGVPYEQFKALNEIDAGVCEEMTYEEIQEHYPEEFALRDQDKYRYRYPKGESYEDLVQRLEPVIMELERQENVLVICHQAVMRCLLAYFLDKSSEELPYLKCPLHTVLKLTPVAYGCKVESIYLNVEAVNTHREKPENVDITREPEEALDTVPAHY 470
                                    48        58        68        78        88        98       108       118       128       138       148       158       168       178       188       198       208       218       228       238       248       258       268       278       288       298       308       318       328       338       348       358       368       378       388       398       408       418       428       438       448       458       468  

   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  (2, 4)

Asymmetric Unit

(-) CATH Domains  (2, 4)

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

(-) Pfam Domains  (2, 4)

Asymmetric Unit
(-)
Clan: PGM (50)

(-) Gene Ontology  (30, 30)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (F261_HUMAN | P16118)
molecular function
    GO:0003873    6-phosphofructo-2-kinase activity    Catalysis of the reaction: beta-D-fructose 6-phosphate + ATP = beta-D-fructose 2,6-bisphosphate + ADP + 2 H(+).
    GO:0005524    ATP binding    Interacting selectively and non-covalently with ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
    GO:0003824    catalytic activity    Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic.
    GO:0004331    fructose-2,6-bisphosphate 2-phosphatase activity    Catalysis of the reaction: D-fructose 2,6-bisphosphate + H2O = D-fructose-6-phosphate + phosphate.
    GO:0070095    fructose-6-phosphate binding    Interacting selectively and non-covalently with fructose 6-phosphate.
    GO:0016787    hydrolase activity    Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc. Hydrolase is the systematic name for any enzyme of EC class 3.
    GO:0042802    identical protein binding    Interacting selectively and non-covalently with an identical protein or proteins.
    GO:0016301    kinase activity    Catalysis of the transfer of a phosphate group, usually from ATP, to a substrate molecule.
    GO:0019900    kinase binding    Interacting selectively and non-covalently with a kinase, any enzyme that catalyzes the transfer of a phosphate group.
    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: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.
biological process
    GO:0031100    animal organ regeneration    The regrowth of a lost or destroyed animal organ.
    GO:0061621    canonical glycolysis    The glycolytic process that begins with the conversion of glucose to glucose-6-phosphate by glucokinase activity. Glycolytic processes are the chemical reactions and pathways resulting in the breakdown of a carbohydrate into pyruvate, with the concomitant production of a small amount of ATP.
    GO:0046835    carbohydrate phosphorylation    The process of introducing a phosphate group into a carbohydrate, any organic compound based on the general formula Cx(H2O)y.
    GO:0016311    dephosphorylation    The process of removing one or more phosphoric (ester or anhydride) residues from a molecule.
    GO:0006003    fructose 2,6-bisphosphate metabolic process    The chemical reactions and pathways involving fructose 2,6-bisphosphate. The D enantiomer is an important regulator of the glycolytic and gluconeogenic pathways. It inhibits fructose 1,6-bisphosphatase and activates phosphofructokinase.
    GO:0006000    fructose metabolic process    The chemical reactions and pathways involving fructose, the ketohexose arabino-2-hexulose. Fructose exists in a open chain form or as a ring compound. D-fructose is the sweetest of the sugars and is found free in a large number of fruits and honey.
    GO:0006094    gluconeogenesis    The formation of glucose from noncarbohydrate precursors, such as pyruvate, amino acids and glycerol.
    GO:0006096    glycolytic process    The chemical reactions and pathways resulting in the breakdown of a carbohydrate into pyruvate, with the concomitant production of a small amount of ATP and the reduction of NAD(P) to NAD(P)H. Glycolysis begins with the metabolism of a carbohydrate to generate products that can enter the pathway and ends with the production of pyruvate. Pyruvate may be converted to acetyl-coenzyme A, ethanol, lactate, or other small molecules.
    GO:0008152    metabolic process    The chemical reactions and pathways, including anabolism and catabolism, by which living organisms transform chemical substances. Metabolic processes typically transform small molecules, but also include macromolecular processes such as DNA repair and replication, and protein synthesis and degradation.
    GO:0016310    phosphorylation    The process of introducing a phosphate group into a molecule, usually with the formation of a phosphoric ester, a phosphoric anhydride or a phosphoric amide.
    GO:0033133    positive regulation of glucokinase activity    Any process that activates or increases the frequency, rate or extent of glucokinase activity, the catalysis of the transfer of a phosphate group, usually from ATP, to a glucose molecule.
    GO:0051591    response to cAMP    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 cAMP (cyclic AMP, adenosine 3',5'-cyclophosphate) stimulus.
    GO:0033762    response to glucagon    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 glucagon 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:0032868    response to insulin    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 insulin stimulus. Insulin is a polypeptide hormone produced by the islets of Langerhans of the pancreas in mammals, and by the homologous organs of other organisms.
    GO:0042594    response to starvation    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 starvation stimulus, deprivation of nourishment.
cellular component
    GO:0043540    6-phosphofructo-2-kinase/fructose-2,6-biphosphatase complex    A homodimeric, bifunctional enzyme complex which catalyzes the synthesis and degradation of fructose 2,6-bisphosphate, and is required for both glycolysis and gluconeogenesis.
    GO:0005829    cytosol    The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.

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