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(-) Description

Title :  STRUCTURAL CHARACTERIZATION OF THE COMPLEX BETWEEN ALPHA-NAPHTHOFLAVONE AND HUMAN CYTOCHROME P450 1B1 (CYP1B1)
 
Authors :  A. Wang, C. D. Stout, E. F. Johnson
Date :  15 Nov 10  (Deposition) - 08 Dec 10  (Release) - 02 Mar 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.70
Chains :  Asym./Biol. Unit :  A
Keywords :  Cyp1B1, P450 1B1, P450, Monooxygenase, Alpha-Naphthoflavone, Heme, 17Beta-Estradiol, Oxidoreductase (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  A. Wang, U. Savas, C. D. Stout, E. F. Johnson
Structural Characterization Of The Complex Between {Alpha}-Naphthoflavone And Human Cytochrome P450 1B1.
J. Biol. Chem. V. 286 5736 2011
PubMed-ID: 21147782  |  Reference-DOI: 10.1074/JBC.M110.204420

(-) Compounds

Molecule 1 - CYTOCHROME P450 1B1
    ChainsA
    EC Number1.14.14.1
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPCWORI
    Expression System Taxid562
    Expression System Vector TypePLASMID
    GeneCYP1B1
    MutationYES
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    SynonymCYPIB1

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit A

Summary Information (see also Sequences/Alignments below)

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

Asymmetric/Biological Unit (2, 2)
No.NameCountTypeFull Name
1BHF1Ligand/Ion2-PHENYL-4H-BENZO[H]CHROMEN-4-ONE
2HEM1Ligand/IonPROTOPORPHYRIN IX CONTAINING FE

(-) Sites  (2, 2)

Asymmetric Unit (2, 2)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREARG A:117 , MET A:132 , ALA A:133 , TRP A:141 , ARG A:145 , MET A:152 , ILE A:327 , ALA A:330 , SER A:331 , THR A:334 , LEU A:335 , PHE A:394 , VAL A:395 , THR A:398 , ILE A:399 , HIS A:401 , GLN A:424 , ILE A:462 , PHE A:463 , SER A:464 , ARG A:468 , CYS A:470 , ILE A:471 , SER A:476 , BHF A:800BINDING SITE FOR RESIDUE HEM A 900
2AC2SOFTWAREPHE A:134 , ASN A:228 , PHE A:231 , LEU A:264 , ASP A:326 , ALA A:330 , THR A:334 , LEU A:509 , HEM A:900BINDING SITE FOR RESIDUE BHF A 800

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 3PM0)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 3PM0)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (55, 55)

Asymmetric/Biological Unit (55, 55)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
01UniProtVAR_028735Q68RCP1B1_HUMANPolymorphism9282670AQ68R
02UniProtVAR_054229L77PCP1B1_HUMANDisease (GLC3A)  ---AL77P
03UniProtVAR_028736Y81NCP1B1_HUMANDisease (POAG)9282671AY81N
04UniProtVAR_054230A115PCP1B1_HUMANDisease (GLC3A)764338357AA115P
05UniProtVAR_011753A119SCP1B1_HUMANPolymorphism1056827AS119S
06UniProtVAR_054231M132RCP1B1_HUMANDisease (GLC3A)  ---AM132R
07UniProtVAR_054232Q144HCP1B1_HUMANPolymorphism  ---AQ144H
08UniProtVAR_054233Q144PCP1B1_HUMANDisease (GLC3A)  ---AQ144P
09UniProtVAR_054234Q144RCP1B1_HUMANDisease (GLC3A)753847648AQ144R
10UniProtVAR_054235R145WCP1B1_HUMANDisease (POAG)  ---AR145W
11UniProtVAR_054236G184SCP1B1_HUMANPolymorphism  ---AG184S
12UniProtVAR_054237A189PCP1B1_HUMANUnclassified  ---AA189P
13UniProtVAR_054238D192VCP1B1_HUMANDisease (GLC3A)  ---AD192V
14UniProtVAR_054239P193LCP1B1_HUMANDisease (GLC3A)529769268AP193L
15UniProtVAR_054240V198ICP1B1_HUMANDisease (GLC3A)59472972AV198I
16UniProtVAR_054241N203SCP1B1_HUMANDisease (GLC3A)  ---AN203S
17UniProtVAR_018869S206NCP1B1_HUMANPolymorphism9341248AS206N
18UniProtVAR_054242S215ICP1B1_HUMANDisease (GLC3A)72549384AS215I
19UniProtVAR_054243E229KCP1B1_HUMANDisease (POAG)57865060AE229K
20UniProtVAR_054244G232RCP1B1_HUMANDisease (POAG)104893628AG232R
21UniProtVAR_054245S239RCP1B1_HUMANDisease (GLC3A)  ---AS239R
22UniProtVAR_018870R266LCP1B1_HUMANPolymorphism9341250AR266L
23UniProtVAR_054247V320LCP1B1_HUMANDisease (GLC3A)72549382AV320L
24UniProtVAR_054248A330FCP1B1_HUMANUnclassified (GLC3A)  ---AA330F
25UniProtVAR_054249A330SCP1B1_HUMANUnclassified  ---AA330S
26UniProtVAR_054251L345FCP1B1_HUMANDisease (POAG)66583685AL345F
27UniProtVAR_054253V364MCP1B1_HUMANDisease (GLC3A)72549379AV364M
28UniProtVAR_001245G365WCP1B1_HUMANDisease (GLC3A)55771538AG365W
29UniProtVAR_016034R368HCP1B1_HUMANDisease (GLC3A)79204362AR368H
30UniProtVAR_001246D374NCP1B1_HUMANDisease (GLC3A)28936413AD374N
31UniProtVAR_008351P379LCP1B1_HUMANPolymorphism56305281AP379L
32UniProtVAR_008352E387KCP1B1_HUMANDisease (POAG)55989760AE387K
33UniProtVAR_054254A388TCP1B1_HUMANDisease (GLC3A)  ---AA388T
34UniProtVAR_054255R390CCP1B1_HUMANDisease (GLC3A)148542782AR390C
35UniProtVAR_008353R390HCP1B1_HUMANDisease (GLC3A)56010818AR390H
36UniProtVAR_054256R390SCP1B1_HUMANDisease (GLC3A)148542782AR390S
37UniProtVAR_054257I399SCP1B1_HUMANDisease (GLC3A)72549378AI399S
38UniProtVAR_054258V409FCP1B1_HUMANDisease (POAG)  ---AV409F
39UniProtVAR_054259V422GCP1B1_HUMANPolymorphism  ---AV422G
40UniProtVAR_054260N423YCP1B1_HUMANDisease (POAG)104893629AN423Y
41UniProtVAR_001248L432VCP1B1_HUMANPolymorphism1056836AL432V
42UniProtVAR_008354P437LCP1B1_HUMANDisease (GLC3A)56175199AP437L
43UniProtVAR_028737D441HCP1B1_HUMANPolymorphism4986887AD441H
44UniProtVAR_018774A443GCP1B1_HUMANUnclassified (POAG)4986888AA443G
45UniProtVAR_054261R444QCP1B1_HUMANDisease (GLC3A)72549376AR444Q
46UniProtVAR_054262F445CCP1B1_HUMANDisease (GLC3A)  ---AF445C
47UniProtVAR_028738D449ECP1B1_HUMANPolymorphism1056837AD449E
48UniProtVAR_008355N453SCP1B1_HUMANPolymorphism1800440AN453S
49UniProtVAR_054263G466DCP1B1_HUMANDisease (GLC3A)868208502AG466D
50UniProtVAR_001247R469WCP1B1_HUMANDisease (GLC3A)28936701AR469W
51UniProtVAR_054264E499GCP1B1_HUMANDisease (GLC3A)72549372AE499G
52UniProtVAR_054265S515LCP1B1_HUMANUnclassified (POAG)  ---AS515L
53UniProtVAR_054266V518ACP1B1_HUMANPolymorphism  ---AV518A
54UniProtVAR_054267R523TCP1B1_HUMANDisease (POAG)  ---AR523T
55UniProtVAR_054268D530GCP1B1_HUMANDisease (POAG)  ---AD530G

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

(-) PROSITE Motifs  (1, 1)

Asymmetric/Biological Unit (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1CYTOCHROME_P450PS00086 Cytochrome P450 cysteine heme-iron ligand signature.CP1B1_HUMAN463-472  1A:463-472

(-) Exons   (0, 0)

(no "Exon" information available for 3PM0)

(-) Sequences/Alignments

Asymmetric/Biological Unit
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
  Number of residues per labelling interval =   
  UniProt sequence: complete  aligned part    
   Show mapping: SCOP domains CATH domains Pfam domains Secondary structure (by author)
SAPs(SNPs) PROSITE motifs Exons
(details for a mapped element are shown in a popup box when the mouse pointer rests over it)
Chain A from PDB  Type:PROTEIN  Length:459
 aligned with CP1B1_HUMAN | Q16678 from UniProtKB/Swiss-Prot  Length:543

    Alignment length:463
                                    77        87        97       107       117       127       137       147       157       167       177       187       197       207       217       227       237       247       257       267       277       287       297       307       317       327       337       347       357       367       377       387       397       407       417       427       437       447       457       467       477       487       497       507       517       527   
          CP1B1_HUMAN    68 QAAHLSFARLARRYGDVFQIRLGSCPIVVLNGERAIHQALVQQGSAFADRPAFASFRVVSGGRSMAFGHYSEHWKVQRRAAHSMMRNFFTRQPRSRQVLEGHVLSEARELVALLVRGSADGAFLDPRPLTVVAVANVMSAVCFGCRYSHDDPEFRELLSHNEEFGRTVGAGSLVDVMPWLQYFPNPVRTVFREFEQLNRNFSNFILDKFLRHCESLRPGAAPRDMMDAFILSAEKKAAGDSHGGGARLDLENVPATITDIFGASQDTLSTALQWLLLLFTRYPDVQTRVQAELDQVVGRDRLPCMGDQPNLPYVLAFLYEAMRFSSFVPVTIPHATTANTSVLGYHIPKDTVVFVNQWSVNHDPLKWPNPENFDPARFLDKDGLINKDLTSRVMIFSVGKRRCIGEELSKMQLFLFISILAHQCDFRANPNEPAKMNFSYGLTIKPKSFKVNVTLRESMELLD 530
               SCOP domains d3pm0a_ A: automated matches                                                                                                                                                                                                                                                                                                                                                                                                                                                    SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains p450-3pm0A01 A:68-520                                                                                                                                                                                                                                                                                                                                                                                                                                                ---------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhh.eeeeee..eeeeee.hhhhhhhhhh...........hhhhhhhhhhh.......hhhhhhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhh.......hhhhhhhh.hhhhhhhhhh.......hhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.......hhhhhhhhhhhhhhh..----....hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh......hhhhhhhhhhhhhhhhhhhhhhh.......ee....eee..eee....eeee.hhhhhh...........hhhhhh......hhhhhh.............hhhhhhhhhhhhhhhhhhheeeee.........eee...eee....eeeee........ Sec.struct. author
             SAPs(SNPs) (1) R--------P---N---------------------------------P---S------------R-----------HW--------------------------------------S----P--VL----I----S--N--------I-------------K--R------R--------------------------L-----------------------------------------------------L---------F--------------F------------------MW--H-----N----L-------KT-C--------S---------F------------GY--------V----L---H-GQC---E---S------------D--W-----------------------------G---------------L--A----T------G SAPs(SNPs) (1)
             SAPs(SNPs) (2) ----------------------------------------------------------------------------P-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------S-----------------------------------------------------------H-------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (2)
             SAPs(SNPs) (3) ----------------------------------------------------------------------------R-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------S-------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs) (3)
                    PROSITE -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------CYTOCHROME---------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3pm0 A  68 QAAHLSFARLARRYGDVFQIRLGSCPIVVLNGERAIHQALVQQGSAFADRPSFASFRVVSGGRSMAFGHYSEHWKVQRRAAHSMMRNFFTRQPRSRQVLEGHVLSEARELVALLVRGSADGAFLDPRPLTVVAVANVMSAVCFGCRYSHDDPEFRELLSHNEEFGRTVGAGSLVDVMPWLQYFPNPVRTVFREFEQLNRNFSNFILDKFLRHCESLRPGAAPRDMMDAFILSAEKKAAGD----GARLDLENVPATITDIFGASQDTLSTALQWLLLLFTRYPDVQTRVQAELDQVVGRDRLPCMGDQPNLPYVLAFLYEAMRFSSFVPVTIPHATTANTSVLGYHIPKDTVVFVNQWSVNHDPLKWPNPENFDPARFLDKDGLINKDLTSRVMIFSVGKRRCIGEELSKMQLFLFISILAHQCDFRANPNEPAKMNFSYGLTIKPKSFKVNVTLRESMELLD 530
                                    77        87        97       107       117       127       137       147       157       167       177       187       197       207       217       227       237       247       257       267       277       287       297       307    |  317       327       337       347       357       367       377       387       397       407       417       427       437       447       457       467       477       487       497       507       517       527   
                                                                                                                                                                                                                                                                         307  312                                                                                                                                                                                                                          

   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/Biological Unit

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3PM0)

(-) Pfam Domains  (1, 1)

Asymmetric/Biological Unit

(-) Gene Ontology  (52, 52)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (CP1B1_HUMAN | Q16678)
molecular function
    GO:0070330    aromatase activity    Catalysis of the reduction of an aliphatic ring to yield an aromatic ring.
    GO:0020037    heme binding    Interacting selectively and non-covalently with heme, any compound of iron complexed in a porphyrin (tetrapyrrole) ring.
    GO:0005506    iron ion binding    Interacting selectively and non-covalently with iron (Fe) ions.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0004497    monooxygenase activity    Catalysis of the incorporation of one atom from molecular oxygen into a compound and the reduction of the other atom of oxygen to water.
    GO:0016491    oxidoreductase activity    Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced.
    GO:0016705    oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen    Catalysis of an oxidation-reduction (redox) reaction in which hydrogen or electrons are transferred from each of two donors, and molecular oxygen is reduced or incorporated into a donor.
    GO:0016712    oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, reduced flavin or flavoprotein as one donor, and incorporation of one atom of oxygen    Catalysis of an oxidation-reduction (redox) reaction in which hydrogen or electrons are transferred from reduced flavin or flavoprotein and one other donor, and one atom of oxygen is incorporated into one donor.
    GO:0019825    oxygen binding    Interacting selectively and non-covalently with oxygen (O2).
biological process
    GO:0001525    angiogenesis    Blood vessel formation when new vessels emerge from the proliferation of pre-existing blood vessels.
    GO:0019369    arachidonic acid metabolic process    The chemical reactions and pathways involving arachidonic acid, a straight chain fatty acid with 20 carbon atoms and four double bonds per molecule. Arachidonic acid is the all-Z-(5,8,11,14)-isomer.
    GO:0048514    blood vessel morphogenesis    The process in which the anatomical structures of blood vessels are generated and organized. The blood vessel is the vasculature carrying blood.
    GO:0007155    cell adhesion    The attachment of a cell, either to another cell or to an underlying substrate such as the extracellular matrix, via cell adhesion molecules.
    GO:0006725    cellular aromatic compound metabolic process    The chemical reactions and pathways involving aromatic compounds, any organic compound characterized by one or more planar rings, each of which contains conjugated double bonds and delocalized pi electrons, as carried out by individual cells.
    GO:0070301    cellular response to hydrogen peroxide    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 hydrogen peroxide (H2O2) stimulus.
    GO:0071407    cellular response to organic cyclic compound    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 an organic cyclic compound stimulus.
    GO:0030199    collagen fibril organization    Any process that determines the size and arrangement of collagen fibrils within an extracellular matrix.
    GO:0043542    endothelial cell migration    The orderly movement of an endothelial cell into the extracellular matrix to form an endothelium.
    GO:0071603    endothelial cell-cell adhesion    The attachment of an endothelial cell to another endothelial cell via adhesion molecules.
    GO:0019373    epoxygenase P450 pathway    The chemical reactions and pathways by which arachidonic acid is converted to other compounds including epoxyeicosatrienoic acids and dihydroxyeicosatrienoic acids.
    GO:0008210    estrogen metabolic process    The chemical reactions and pathways involving estrogens, C18 steroid hormones that can stimulate the development of female sexual characteristics. Also found in plants.
    GO:0008631    intrinsic apoptotic signaling pathway in response to oxidative stress    A series of molecular signals in which an intracellular signal is conveyed to trigger the apoptotic death of a cell. The pathway is induced in response to oxidative stress, a state often resulting from exposure to high levels of reactive oxygen species, and ends when the execution phase of apoptosis is triggered.
    GO:0046466    membrane lipid catabolic process    The chemical reactions and pathways resulting in the breakdown of membrane lipids, any lipid found in or associated with a biological membrane.
    GO:0032088    negative regulation of NF-kappaB transcription factor activity    Any process that stops, prevents, or reduces the frequency, rate or extent of the activity of the transcription factor NF-kappaB.
    GO:0033629    negative regulation of cell adhesion mediated by integrin    Any process that stops, prevents, or reduces the frequency, rate, or extent of cell adhesion mediated by integrin.
    GO:0030336    negative regulation of cell migration    Any process that stops, prevents, or reduces the frequency, rate or extent of cell migration.
    GO:0008285    negative regulation of cell proliferation    Any process that stops, prevents or reduces the rate or extent of cell proliferation.
    GO:0006809    nitric oxide biosynthetic process    The chemical reactions and pathways resulting in the formation of nitric oxide, nitrogen monoxide (NO), a colorless gas only slightly soluble in water.
    GO:0097267    omega-hydroxylase P450 pathway    The chemical reactions and pathways by which arachidonic acid is converted to other compounds initially by omega-hydroxylation.
    GO:0055114    oxidation-reduction process    A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons.
    GO:0046427    positive regulation of JAK-STAT cascade    Any process that activates or increases the frequency, rate or extent of the JAK-STAT signaling pathway activity.
    GO:0045766    positive regulation of angiogenesis    Any process that activates or increases angiogenesis.
    GO:0043065    positive regulation of apoptotic process    Any process that activates or increases the frequency, rate or extent of cell death by apoptotic process.
    GO:0010575    positive regulation of vascular endothelial growth factor production    Any process that increases or activates the frequency, rate, or extent of production of vascular endothelial growth factor.
    GO:2000377    regulation of reactive oxygen species metabolic process    Any process that modulates the frequency, rate or extent of reactive oxygen species metabolic process.
    GO:0009636    response to toxic substance    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 toxic stimulus.
    GO:0061298    retina vasculature development in camera-type eye    The process whose specific outcome is the progression of the vasculature of the retina over time, from its formation to the mature structure.
    GO:0061304    retinal blood vessel morphogenesis    The process whose specific outcome is the progression of a blood vessel of the retina over time, from its formation to the mature structure.
    GO:0042574    retinal metabolic process    The chemical reactions and pathways involving retinal, a compound that plays an important role in the visual process in most vertebrates. In the retina, retinal combines with opsins to form visual pigments. Retinal is one of the forms of vitamin A.
    GO:0042572    retinol metabolic process    The chemical reactions and pathways involving retinol, one of the three compounds that makes up vitamin A.
    GO:0008202    steroid metabolic process    The chemical reactions and pathways involving steroids, compounds with a 1,2,cyclopentanoperhydrophenanthrene nucleus.
    GO:0016125    sterol metabolic process    The chemical reactions and pathways involving sterols, steroids with one or more hydroxyl groups and a hydrocarbon side-chain in the molecule.
    GO:0009404    toxin metabolic process    The chemical reactions and pathways involving a toxin, a poisonous compound (typically a protein) that is produced by cells or organisms and that can cause disease when introduced into the body or tissues of an organism.
    GO:0002930    trabecular meshwork development    The progression of the trabecular meshwork over time, from its formation to the mature structure. The trabecular meshwork is a fenestrated endothelial-like tissue situated at the intersection of the cornea and the iris. The trabecular meshwork provides drainage for the aqueous humor.
    GO:0007601    visual perception    The series of events required for an organism to receive a visual stimulus, convert it to a molecular signal, and recognize and characterize the signal. Visual stimuli are detected in the form of photons and are processed to form an image.
    GO:0006805    xenobiotic metabolic process    The chemical reactions and pathways involving a xenobiotic compound, a compound foreign to living organisms. Used of chemical compounds, e.g. a xenobiotic chemical, such as a pesticide.
cellular component
    GO:0005783    endoplasmic reticulum    The irregular network of unit membranes, visible only by electron microscopy, that occurs in the cytoplasm of many eukaryotic cells. The membranes form a complex meshwork of tubular channels, which are often expanded into slitlike cavities called cisternae. The ER takes two forms, rough (or granular), with ribosomes adhering to the outer surface, and smooth (with no ribosomes attached).
    GO:0005789    endoplasmic reticulum membrane    The lipid bilayer surrounding the endoplasmic reticulum.
    GO:0043231    intracellular membrane-bounded organelle    Organized structure of distinctive morphology and function, bounded by a single or double lipid bilayer membrane and occurring within the cell. Includes the nucleus, mitochondria, plastids, vacuoles, and vesicles. Excludes the plasma membrane.
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0005739    mitochondrion    A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.
    GO:0031090    organelle membrane    A membrane that is one of the two lipid bilayers of an organelle envelope or the outermost membrane of single membrane bound organelle.

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2hi4 HUMAN CYTOCHROME P450 1A2 (CYP1A2)