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(-) Description

Title :  CRYSTAL STRUCTURES OF THE G139A, G139A-NO AND G143H MUTANTS OF HUMAN HEME OXYGENASE-1
 
Authors :  L. Lad, P. R. Ortiz De Montellano, T. L. Poulos
Date :  26 Sep 04  (Deposition) - 25 Oct 05  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.88
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A  (1x)
Biol. Unit 2:  B  (1x)
Keywords :  Heme, Heme Degredation, Oxidoreductase (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  L. Lad, A. Koshkin, P. R. Ortiz De Montellano, T. L. Poulos
Crystal Structures Of The G139A, G139A-No And G143H Mutants Of Human Heme Oxygenase-1. A Finely Tuned Hydrogen-Bonding Network Controls Oxygenase Versus Peroxidase Activity.
J. Biol. Inorg. Chem. V. 10 138 2005
PubMed-ID: 15690204  |  Reference-DOI: 10.1007/S00775-004-0620-6
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - HEME OXYGENASE 1
    ChainsA, B
    EC Number1.14.99.3
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System Taxid562
    GeneHMOX1, HO1, HO
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    SynonymHO-1

 Structural Features

(-) Chains, Units

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

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 2)

Asymmetric Unit (1, 2)
No.NameCountTypeFull Name
1HEM2Ligand/IonPROTOPORPHYRIN IX CONTAINING FE
Biological Unit 1 (1, 1)
No.NameCountTypeFull Name
1HEM1Ligand/IonPROTOPORPHYRIN IX CONTAINING FE
Biological Unit 2 (1, 1)
No.NameCountTypeFull Name
1HEM1Ligand/IonPROTOPORPHYRIN IX CONTAINING FE

(-) Sites  (2, 2)

Asymmetric Unit (2, 2)
No.NameEvidenceResiduesDescription
1AC1SOFTWARELYS A:18 , HIS A:25 , GLN A:38 , TYR A:134 , ALA A:139 , ARG A:183 , PHE A:207 , ASN A:210 , PHE A:214 , HOH A:326 , HOH A:363 , HOH A:438 , HOH A:458BINDING SITE FOR RESIDUE HEM A 300
2AC2SOFTWARELYS B:18 , HIS B:25 , GLU B:29 , MET B:34 , GLN B:38 , TYR B:134 , ARG B:136 , ALA B:139 , ARG B:183 , PHE B:207 , ASN B:210 , PHE B:214 , HOH B:388BINDING SITE FOR RESIDUE HEM B 300

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (0, 0)

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

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (1, 2)

Asymmetric Unit (1, 2)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_022156P106LHMOX1_HUMANPolymorphism9282702A/BP106L

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 1 (1, 1)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_022156P106LHMOX1_HUMANPolymorphism9282702AP106L

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 2 (1, 1)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_022156P106LHMOX1_HUMANPolymorphism9282702BP106L

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

(-) PROSITE Motifs  (1, 2)

Asymmetric Unit (1, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1HEME_OXYGENASEPS00593 Heme oxygenase signature.HMOX1_HUMAN129-139
 
  2A:129-138
B:129-138
Biological Unit 1 (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1HEME_OXYGENASEPS00593 Heme oxygenase signature.HMOX1_HUMAN129-139
 
  1A:129-138
-
Biological Unit 2 (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1HEME_OXYGENASEPS00593 Heme oxygenase signature.HMOX1_HUMAN129-139
 
  1-
B:129-138

(-) Exons   (3, 6)

Asymmetric Unit (3, 6)
 ENSEMBLUniProtKBPDB
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength
1.2aENST000002161172aENSE00001915869chr22:35776828-35777189362HMOX1_HUMAN1-880--
1.3ENST000002161173ENSE00000880006chr22:35779099-35779219121HMOX1_HUMAN8-48412A:10-48
B:10-48
39
39
1.4cENST000002161174cENSE00000653517chr22:35782678-35783169492HMOX1_HUMAN49-2121642A:49-212
B:49-212
164
164
1.5aENST000002161175aENSE00000653518chr22:35785857-35785956100HMOX1_HUMAN213-246342A:213-223
B:213-223
11
11
1.6ENST000002161176ENSE00001380117chr22:35789461-35790207747HMOX1_HUMAN246-288430--

(-) 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:214
 aligned with HMOX1_HUMAN | P09601 from UniProtKB/Swiss-Prot  Length:288

    Alignment length:214
                                    19        29        39        49        59        69        79        89        99       109       119       129       139       149       159       169       179       189       199       209       219    
          HMOX1_HUMAN    10 PQDLSEALKEATKEVHTQAENAEFMRNFQKGQVTRDGFKLVMASLYHIYVALEEEIERNKESPVFAPVYFPEELHRKAALEQDLAFWYGPRWQEVIPYTPAMQRYVKRLHEVGRTEPELLVAHAYTRYLGDLSGGQVLKKIAQKALDLPSSGEGLAFFTFPNIASATKFKQLYRSRMNSLEMTPAVRQRVIEEAKTAFLLNIQLFEELQELLTH 223
               SCOP domains d1xjza1 A:10-223 Heme oxygenase-1 (HO-1)                                                                                                                                                                               SCOP domains
               CATH domains 1xjzA00 A:10-223 Heme Oxygenase; Chain A                                                                                                                                                                               CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhhhhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhhhh..hhhhhh..hhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhhhhh........hhhhh.....hhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------L--------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -----------------------------------------------------------------------------------------------------------------------HEME_OXYGEN------------------------------------------------------------------------------------ PROSITE
               Transcript 1 Exon 1.3  PDB: A:10-48 UniProt: 8-48   Exon 1.4c  PDB: A:49-212 UniProt: 49-212                                                                                                                            Exon 1.5a   Transcript 1
                 1xjz A  10 PQDLSEALKEATKEVHTQAENAEFMRNFQKGQVTRDGFKLVMASLYHIYVALEEEIERNKESPVFAPVYFPEELHRKAALEQDLAFWYGPRWQEVIPYTPAMQRYVKRLHEVGRTEPELLVAHAYTRYLADLSGGQVLKKIAQKALDLPSSGEGLAFFTFPNIASATKFKQLYRSRMNSLEMTPAVRQRVIEEAKTAFLLNIQLFEELQELLTH 223
                                    19        29        39        49        59        69        79        89        99       109       119       129       139       149       159       169       179       189       199       209       219    

Chain B from PDB  Type:PROTEIN  Length:214
 aligned with HMOX1_HUMAN | P09601 from UniProtKB/Swiss-Prot  Length:288

    Alignment length:214
                                    19        29        39        49        59        69        79        89        99       109       119       129       139       149       159       169       179       189       199       209       219    
          HMOX1_HUMAN    10 PQDLSEALKEATKEVHTQAENAEFMRNFQKGQVTRDGFKLVMASLYHIYVALEEEIERNKESPVFAPVYFPEELHRKAALEQDLAFWYGPRWQEVIPYTPAMQRYVKRLHEVGRTEPELLVAHAYTRYLGDLSGGQVLKKIAQKALDLPSSGEGLAFFTFPNIASATKFKQLYRSRMNSLEMTPAVRQRVIEEAKTAFLLNIQLFEELQELLTH 223
               SCOP domains d1xjzb_ B: Heme oxygenase-1 (HO-1)                                                                                                                                                                                     SCOP domains
               CATH domains 1xjzB00 B:10-223 Heme Oxygenase; Chain A                                                                                                                                                                               CATH domains
           Pfam domains (1) -Heme_oxygenase-1xjzB01 B:11-216                                                                                                                                                                               ------- Pfam domains (1)
           Pfam domains (2) -Heme_oxygenase-1xjzB02 B:11-216                                                                                                                                                                               ------- Pfam domains (2)
         Sec.struct. author ..hhhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhh..hhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhhhhhh.......hhhhh.....hhhhhhhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------L--------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -----------------------------------------------------------------------------------------------------------------------HEME_OXYGEN------------------------------------------------------------------------------------ PROSITE
               Transcript 1 Exon 1.3  PDB: B:10-48 UniProt: 8-48   Exon 1.4c  PDB: B:49-212 UniProt: 49-212                                                                                                                            Exon 1.5a   Transcript 1
                 1xjz B  10 PQDLSEALKEATKEVHTQAENAEFMRNFQKGQVTRDGFKLVMASLYHIYVALEEEIERNKESPVFAPVYFPEELHRKAALEQDLAFWYGPRWQEVIPYTPAMQRYVKRLHEVGRTEPELLVAHAYTRYLADLSGGQVLKKIAQKALDLPSSGEGLAFFTFPNIASATKFKQLYRSRMNSLEMTPAVRQRVIEEAKTAFLLNIQLFEELQELLTH 223
                                    19        29        39        49        59        69        79        89        99       109       119       129       139       149       159       169       179       189       199       209       219    

   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, 2)

Asymmetric Unit

(-) CATH Domains  (1, 2)

Asymmetric Unit

(-) Pfam Domains  (1, 2)

Asymmetric Unit
(-)
Clan: HO (49)

(-) Gene Ontology  (67, 67)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (HMOX1_HUMAN | P09601)
molecular function
    GO:0019899    enzyme binding    Interacting selectively and non-covalently with any enzyme.
    GO:0020037    heme binding    Interacting selectively and non-covalently with heme, any compound of iron complexed in a porphyrin (tetrapyrrole) ring.
    GO:0004392    heme oxygenase (decyclizing) activity    Catalysis of the reaction: heme + 3 donor-H2 + 3 O2 = biliverdin + Fe2+ + CO + 3 acceptor + 3 H2O.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    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:0004630    phospholipase D activity    Catalysis of the reaction: a phosphatidylcholine + H2O = choline + a phosphatidate.
    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:0042803    protein homodimerization activity    Interacting selectively and non-covalently with an identical protein to form a homodimer.
    GO:0004871    signal transducer activity    Conveys a signal across a cell to trigger a change in cell function or state. A signal is a physical entity or change in state that is used to transfer information in order to trigger a response.
biological process
    GO:0001525    angiogenesis    Blood vessel formation when new vessels emerge from the proliferation of pre-existing blood vessels.
    GO:0006915    apoptotic process    A programmed cell death process which begins when a cell receives an internal (e.g. DNA damage) or external signal (e.g. an extracellular death ligand), and proceeds through a series of biochemical events (signaling pathway phase) which trigger an execution phase. The execution phase is the last step of an apoptotic process, and is typically characterized by rounding-up of the cell, retraction of pseudopodes, reduction of cellular volume (pyknosis), chromatin condensation, nuclear fragmentation (karyorrhexis), plasma membrane blebbing and fragmentation of the cell into apoptotic bodies. When the execution phase is completed, the cell has died.
    GO:0008219    cell death    Any biological process that results in permanent cessation of all vital functions of a cell. A cell should be considered dead when any one of the following molecular or morphological criteria is met: (1) the cell has lost the integrity of its plasma membrane; (2) the cell, including its nucleus, has undergone complete fragmentation into discrete bodies (frequently referred to as apoptotic bodies). The cell corpse (or its fragments) may be engulfed by an adjacent cell in vivo, but engulfment of whole cells should not be considered a strict criteria to define cell death as, under some circumstances, live engulfed cells can be released from phagosomes (see PMID:18045538).
    GO:0006879    cellular iron ion homeostasis    Any process involved in the maintenance of an internal steady state of iron ions at the level of a cell.
    GO:0071243    cellular response to arsenic-containing substance    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 arsenic stimulus from compounds containing arsenic, including arsenates, arsenites, and arsenides.
    GO:0071276    cellular response to cadmium 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 cadmium (Cd) ion stimulus.
    GO:0034605    cellular response to heat    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 heat stimulus, a temperature stimulus above the optimal temperature for that organism.
    GO:0071456    cellular response to hypoxia    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 stimulus indicating lowered oxygen tension. Hypoxia, defined as a decline in O2 levels below normoxic levels of 20.8 - 20.95%, results in metabolic adaptation at both the cellular and organismal level.
    GO:0031670    cellular response to nutrient    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 nutrient stimulus.
    GO:0001935    endothelial cell proliferation    The multiplication or reproduction of endothelial cells, resulting in the expansion of a cell population. Endothelial cells are thin flattened cells which line the inside surfaces of body cavities, blood vessels, and lymph vessels, making up the endothelium.
    GO:0034101    erythrocyte homeostasis    Any process of regulating the production and elimination of erythrocytes within an organism.
    GO:0007588    excretion    The elimination by an organism of the waste products that arise as a result of metabolic activity. These products include water, carbon dioxide (CO2), and nitrogenous compounds.
    GO:0042167    heme catabolic process    The chemical reactions and pathways resulting in the breakdown of heme, any compound of iron complexed in a porphyrin (tetrapyrrole) ring.
    GO:0042168    heme metabolic process    The chemical reactions and pathways involving heme, any compound of iron complexed in a porphyrin (tetrapyrrole) ring.
    GO:0006788    heme oxidation    The chemical reactions and pathways resulting in the loss of electrons from one or more atoms in heme.
    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:0008630    intrinsic apoptotic signaling pathway in response to DNA damage    A series of molecular signals in which an intracellular signal is conveyed to trigger the apoptotic death of a cell. The pathway is induced by the detection of DNA damage, and ends when the execution phase of apoptosis is triggered.
    GO:0055072    iron ion homeostasis    Any process involved in the maintenance of an internal steady state of iron ions within an organism or cell.
    GO:0034383    low-density lipoprotein particle clearance    The process in which a low-density lipoprotein particle is removed from the blood via receptor-mediated endocytosis and its constituent parts degraded.
    GO:0043392    negative regulation of DNA binding    Any process that stops or reduces the frequency, rate or extent of DNA binding. DNA binding is any process in which a gene product interacts selectively with DNA (deoxyribonucleic acid).
    GO:0008285    negative regulation of cell proliferation    Any process that stops, prevents or reduces the rate or extent of cell proliferation.
    GO:1902042    negative regulation of extrinsic apoptotic signaling pathway via death domain receptors    Any process that stops, prevents or reduces the frequency, rate or extent of extrinsic apoptotic signaling pathway via death domain receptors.
    GO:0002686    negative regulation of leukocyte migration    Any process that stops, prevents, or reduces the frequency, rate, or extent of leukocyte migration.
    GO:0032764    negative regulation of mast cell cytokine production    Any process that stops, prevents, or reduces the frequency, rate, or extent of mast cell cytokine production.
    GO:0043305    negative regulation of mast cell degranulation    Any process that stops, prevents, or reduces the rate of mast cell degranulation.
    GO:0010656    negative regulation of muscle cell apoptotic process    Any process that decreases the rate or frequency of muscle cell apoptotic process, a form of programmed cell death induced by external or internal signals that trigger the activity of proteolytic caspases whose actions dismantle a muscle cell and result in its death.
    GO:0043524    negative regulation of neuron apoptotic process    Any process that stops, prevents, or reduces the frequency, rate or extent of cell death by apoptotic process in neurons.
    GO:0043433    negative regulation of sequence-specific DNA binding transcription factor activity    Any process that stops, prevents, or reduces the frequency, rate or extent of the activity of a transcription factor, any factor involved in the initiation or regulation of transcription.
    GO:0048662    negative regulation of smooth muscle cell proliferation    Any process that stops, prevents or reduces the rate or extent of smooth muscle cell proliferation.
    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:0043123    positive regulation of I-kappaB kinase/NF-kappaB signaling    Any process that activates or increases the frequency, rate or extent of I-kappaB kinase/NF-kappaB signaling.
    GO:0045766    positive regulation of angiogenesis    Any process that activates or increases angiogenesis.
    GO:0045080    positive regulation of chemokine biosynthetic process    Any process that activates or increases the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of chemokines.
    GO:0048661    positive regulation of smooth muscle cell proliferation    Any process that activates or increases the rate or extent of smooth muscle cell proliferation.
    GO:0051260    protein homooligomerization    The process of creating protein oligomers, compounds composed of a small number, usually between three and ten, of identical component monomers. Oligomers may be formed by the polymerization of a number of monomers or the depolymerization of a large protein polymer.
    GO:0045765    regulation of angiogenesis    Any process that modulates the frequency, rate or extent of angiogenesis.
    GO:0008217    regulation of blood pressure    Any process that modulates the force with which blood travels through the circulatory system. The process is controlled by a balance of processes that increase pressure and decrease pressure.
    GO:0051090    regulation of sequence-specific DNA binding transcription factor activity    Any process that modulates the frequency, rate or extent of the activity of a transcription factor, any factor involved in the initiation or regulation of transcription.
    GO:0034395    regulation of transcription from RNA polymerase II promoter in response to iron    Any process that modulates the frequency, rate or extent of transcription from an RNA polymerase II promoter in response to an iron stimulus.
    GO:0043619    regulation of transcription from RNA polymerase II promoter in response to oxidative stress    Modulation of the frequency, rate or extent of transcription from an RNA polymerase II promoter as a result of a stimulus indicating the organism is under oxidative stress, a state often resulting from exposure to high levels of reactive oxygen species, e.g. superoxide anions, hydrogen peroxide (H2O2), and hydroxyl radicals.
    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:0042542    response to hydrogen peroxide    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 hydrogen peroxide (H2O2) stimulus.
    GO:0001666    response to hypoxia    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 stimulus indicating lowered oxygen tension. Hypoxia, defined as a decline in O2 levels below normoxic levels of 20.8 - 20.95%, results in metabolic adaptation at both the cellular and organismal level.
    GO:0035094    response to nicotine    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 nicotine stimulus.
    GO:0006979    response to oxidative stress    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 oxidative stress, a state often resulting from exposure to high levels of reactive oxygen species, e.g. superoxide anions, hydrogen peroxide (H2O2), and hydroxyl radicals.
    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.
    GO:0014806    smooth muscle hyperplasia    A process, occurring in smooth muscle, in which there is an increase in cell number by cell division, often leading to an increase in the size of an organ.
    GO:0002246    wound healing involved in inflammatory response    The series of events that restore integrity to damaged tissue that contribute to an inflammatory response.
cellular component
    GO:0005901    caveola    A membrane raft that forms small pit, depression, or invagination that communicates with the outside of a cell and extends inward, indenting the cytoplasm and the cell membrane. Examples include flask-shaped invaginations of the plasma membrane in adipocytes associated with caveolin proteins, and minute pits or incuppings of the cell membrane formed during pinocytosis. Caveolae may be pinched off to form free vesicles within the cytoplasm.
    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: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: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: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:0005730    nucleolus    A small, dense body one or more of which are present in the nucleus of eukaryotic cells. It is rich in RNA and protein, is not bounded by a limiting membrane, and is not seen during mitosis. Its prime function is the transcription of the nucleolar DNA into 45S ribosomal-precursor RNA, the processing of this RNA into 5.8S, 18S, and 28S components of ribosomal RNA, and the association of these components with 5S RNA and proteins synthesized outside the nucleolus. This association results in the formation of ribonucleoprotein precursors; these pass into the cytoplasm and mature into the 40S and 60S subunits of the ribosome.
    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:0048471    perinuclear region of cytoplasm    Cytoplasm situated near, or occurring around, the nucleus.

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 Related Entries

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

UniProtKB/Swiss-Prot
        HMOX1_HUMAN | P096011n3u 1n45 1ni6 1oyk 1oyl 1oze 1ozl 1ozr 1ozw 1s13 1s8c 1t5p 1twn 1twr 1xk0 1xk1 1xk2 1xk3 3czy 3hok 3k4f 3tgm 4wd4 5btq

(-) Related Entries Specified in the PDB File

1xk0 1xk1 1xk2 1xk3