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(-) Description

Title :  THE CRYSTAL STRUCTURE OF HUMAN ATG4B- LC3(1-124) COMPLEX
 
Authors :  K. Satoo, N. N. Noda, F. Inagaki
Date :  07 May 07  (Deposition) - 22 May 07  (Release) - 06 Oct 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.90
Chains :  Asym./Biol. Unit :  A,B
Keywords :  Papain-Like Fold, Ubiquitin Fold, Hydrolase/Structural Protein Complex (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  K. Satoo, N. N. Noda, H. Kumeta, Y. Fujioka, N. Mizushima, Y. Ohsumi, F. Inagaki
The Structure Of Atg4B-Lc3 Complex Reveals The Mechanism Of Lc3 Processing And Delipidation During Autophagy.
Embo J. V. 28 1341 2009
PubMed-ID: 19322194  |  Reference-DOI: 10.1038/EMBOJ.2009.80
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - CYSTEINE PROTEASE ATG4B
    ChainsA
    EC Number3.4.22.-
    EngineeredYES
    Expression SystemESCHERICHIA COLI BL21
    Expression System PlasmidPGEX6P
    Expression System StrainBL21
    Expression System Taxid511693
    Expression System Vector TypePLASMID
    FragmentRESIDUES (-2)-354
    MutationYES
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    SynonymHSATG4B, AUTOPHAGY-RELATED PROTEIN 4 HOMOLOG B, HAPG4B, AUTOPHAGIN-1, AUTOPHAGY-RELATED CYSTEINE ENDOPEPTIDASE 1, AUT-LIKE 1 CYSTEINE ENDOPEPTIDASE
 
Molecule 2 - MICROTUBULE-ASSOCIATED PROTEINS 1A/1B LIGHT CHAIN 3B
    ChainsB
    EngineeredYES
    Expression SystemESCHERICHIA COLI BL21
    Expression System PlasmidPGEX6P
    Expression System StrainBL21
    Expression System Taxid511693
    Expression System Vector TypePLASMID
    Organism CommonNORWAY RAT
    Organism ScientificRATTUS NORVEGICUS
    Organism Taxid10116
    SynonymLC3, MICROTUBULE-ASSOCIATED PROTEIN 1 LIGHT CHAIN 3 BETA, MAP1A/MAP1B LC3 B, MAP1A/1B LIGHT CHAIN 3 B, MAP1 LIGHT CHAIN 3-LIKE PROTEIN 2, AUTOPHAGY-RELATED PROTEIN LC3 B, AUTOPHAGY-RELATED UBIQUITIN-LIKE MODIFIER LC3 B

 Structural Features

(-) Chains, Units

  12
Asymmetric/Biological Unit AB

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (0, 0)

(no "Ligand,Modified Residues,Ions" information available for 2Z0E)

(-) Sites  (0, 0)

(no "Site" information available for 2Z0E)

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 2Z0E)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 2Z0E)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (1, 1)

Asymmetric/Biological Unit (1, 1)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_021486L354QATG4B_HUMANPolymorphism7601000AQ354Q

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

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 2Z0E)

(-) Exons   (0, 0)

(no "Exon" information available for 2Z0E)

(-) 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:315
 aligned with ATG4B_HUMAN | Q9Y4P1 from UniProtKB/Swiss-Prot  Length:393

    Alignment length:351
                                    13        23        33        43        53        63        73        83        93       103       113       123       133       143       153       163       173       183       193       203       213       223       233       243       253       263       273       283       293       303       313       323       333       343       353 
          ATG4B_HUMAN     4 ATLTYDTLRFAEFEDFPETSEPVWILGRKYSIFTEKDEILSDVASRLWFTYRKNFPAIGGTGPTSDTGWGCMLRCGQMIFAQALVCRHLGRDWRWTQRKRQPDSYFSVLNAFIDRKDSYYSIHQIAQMGVGEGKSIGQWYGPNTVAQVLKKLAVFDTWSSLAVHIAMDNTVVMEEIRRLCRTSVPCAGATAFPADSDRHCNGFPAGAEVTNRPSPWRPLVLLIPLRLGLTDINEAYVETLKHCFMMPQSLGVIGGKPNSAHYFIGYVGEELIYLDPHTTQPAVEPTDGCFIPDESFHCQHPPCRMSIAELDPSIAVGFFCKTEDDFNDWCQQVKKLSLLGGALPMFELVEL 354
               SCOP domains d2z0ea_ A: automated matches                                                                                                                                                                                                                                                                                                                                    SCOP domains
               CATH domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------Peptidase_C54-2z0eA01 A:36-337                                                                                                                                                                                                                                                                                ----------------- Pfam domains
         Sec.struct. author hhhhh....hhhhhhh......eee..eee....hhhhhhhhhhhh....eee................hhhhhhhhhhhhhhhhhhhh............hhhhhhhhhh.........hhhhhhhhhhh.........hhhhhhhhhhhhhh.......eeee....eeehhhhhhhhh..-------------------------------....eeeeeeee......hhhhhhhhhhh.....eeeeeeee..eeeeeeeee..eeeee....eee....-----..hhhhh.....eeee.hhh..eeeeeeee.hhhhhhhhhhhhhhhhhh.......eee.. Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Q SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2z0e A   4 ATLTYDTLRFAEFEDFPETSEPVWILGRKYSIFTEKDEILSDVASRLWFTYRKNFPAIGGTGPTSDTGWGCMLRCGQMIFAQALVCRHLGRDWRWTQRKRQPDSYFSVLNAFIDRKDSYYSIHQIAQMGVGEGKSIGQWYGPNTVAQVLKKLAVFDTWSSLAVHIAMDNTVVMEEIRRLCRTS-------------------------------PWRPLVLLIPLRLGLTDINEAYVETLKHCFMMPQSLGVIGGKPNSAHYFIGYVGEELIYLDPATTQPAVEP-----IPDESFHCQHPPCRMSIAELDPSIAVGFFCKTEDDFNDWCQQVKKLSLLGGALPMFELVEQ 354
                                    13        23        33        43        53        63        73        83        93       103       113       123       133       143       153       163       173       183  |      -         -         -    |  223       233       243       253       263       273       283    |    -|      303       313       323       333       343       353 
                                                                                                                                                                                                                186                             218                                                                   288   294                                                            

Chain B from PDB  Type:PROTEIN  Length:118
 aligned with MLP3B_RAT | Q62625 from UniProtKB/Swiss-Prot  Length:142

    Alignment length:118
                                    14        24        34        44        54        64        74        84        94       104       114        
            MLP3B_RAT     5 KTFKQRRSFEQRVEDVRLIREQHPTKIPVIIERYKGEKQLPVLDKTKFLVPDHVNMSELIKIIRRRLQLNANQAFFLLVNGHSMVSVSTPISEVYESERDEDGFLYMVYASQETFGTA 122
               SCOP domains d2z0eb_ B: automated matches                                                                                           SCOP domains
               CATH domains 2z0eB00 B:5-122 Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 1                                     CATH domains
               Pfam domains ----------Atg8-2z0eB01 B:15-120                                                                                     -- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhhhhhhh..eeeeeeee.............eeeee...hhhhhhhhhhhhh........eee...........hhhhhhhhhh.....eeeeee........ Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------- Transcript
                 2z0e B   5 KTFKQRRSFEQRVEDVRLIREQHPTKIPVIIERYKGEKQLPVLDKTKFLVPDHVNMSELIKIIRRRLQLNANQAFFLLVNGHSMVSVSTPISEVYESERDEDGFLYMVYASQETFGTA 122
                                    14        24        34        44        54        64        74        84        94       104       114        

   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, 2)

Asymmetric/Biological Unit

(-) CATH Domains  (1, 1)

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

(-) Pfam Domains  (2, 2)

Asymmetric/Biological Unit
(-)
Clan: Ubiquitin (279)

(-) Gene Ontology  (37, 42)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (ATG4B_HUMAN | Q9Y4P1)
molecular function
    GO:0004197    cysteine-type endopeptidase activity    Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a mechanism in which the sulfhydryl group of a cysteine residue at the active center acts as a nucleophile.
    GO:0008234    cysteine-type peptidase activity    Catalysis of the hydrolysis of peptide bonds in a polypeptide chain by a mechanism in which the sulfhydryl group of a cysteine residue at the active center acts as a nucleophile.
    GO:0004175    endopeptidase activity    Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain.
    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:0008233    peptidase activity    Catalysis of the hydrolysis of a peptide bond. A peptide bond is a covalent bond formed when the carbon atom from the carboxyl group of one amino acid shares electrons with the nitrogen atom from the amino group of a second amino acid.
    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:0006501    C-terminal protein lipidation    The covalent attachment of a lipid group to the carboxy terminus of a protein.
    GO:0000045    autophagosome assembly    The formation of a double membrane-bounded structure, the autophagosome, that occurs when a specialized membrane sac, called the isolation membrane, starts to enclose a portion of the cytoplasm.
    GO:0006914    autophagy    The process in which cells digest parts of their own cytoplasm; allows for both recycling of macromolecular constituents under conditions of cellular stress and remodeling the intracellular structure for cell differentiation.
    GO:0000422    autophagy of mitochondrion    The autophagic process in which mitochondria are delivered to the vacuole and degraded in response to changing cellular conditions.
    GO:0044804    autophagy of nucleus    A selective form of autophagy, by which damaged or non-essential parts of the nucleus, or even an entire nucleus is degraded.
    GO:0016236    macroautophagy    The major inducible pathway for the general turnover of cytoplasmic constituents in eukaryotic cells, it is also responsible for the degradation of active cytoplasmic enzymes and organelles during nutrient starvation. Macroautophagy involves the formation of double-membrane-bounded autophagosomes which enclose the cytoplasmic constituent targeted for degradation in a membrane-bounded structure. Autophagosomes then fuse with a lysosome (or vacuole) releasing single-membrane-bounded autophagic bodies that are then degraded within the lysosome (or vacuole). Though once thought to be a purely non-selective process, it appears that some types of macroautophagy, e.g. macropexophagy, macromitophagy, may involve selective targeting of the targets to be degraded.
    GO:0045732    positive regulation of protein catabolic process    Any process that activates or increases the frequency, rate or extent of the chemical reactions and pathways resulting in the breakdown of a protein by the destruction of the native, active configuration, with or without the hydrolysis of peptide bonds.
    GO:0051697    protein delipidation    The breakage of covalent bonds to detach lipid groups from a protein.
    GO:0016485    protein processing    Any protein maturation process achieved by the cleavage of a peptide bond or bonds within a protein. Protein maturation is the process leading to the attainment of the full functional capacity of a protein.
    GO:0006612    protein targeting to membrane    The process of directing proteins towards a membrane, usually using signals contained within the protein.
    GO:0015031    protein transport    The directed movement of proteins into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
    GO:0006508    proteolysis    The hydrolysis of proteins into smaller polypeptides and/or amino acids by cleavage of their peptide bonds.
    GO:0006810    transport    The directed movement of substances (such as macromolecules, small molecules, ions) or cellular components (such as complexes and organelles) into, out of or within a cell, or between cells, or within a multicellular organism by means of some agent such as a transporter, pore or motor protein.
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.

Chain B   (MLP3B_RAT | Q62625)
molecular function
    GO:0008017    microtubule binding    Interacting selectively and non-covalently with microtubules, filaments composed of tubulin monomers.
    GO:0019904    protein domain specific binding    Interacting selectively and non-covalently with a specific domain of a protein.
    GO:0015631    tubulin binding    Interacting selectively and non-covalently with monomeric or multimeric forms of tubulin, including microtubules.
biological process
    GO:0000045    autophagosome assembly    The formation of a double membrane-bounded structure, the autophagosome, that occurs when a specialized membrane sac, called the isolation membrane, starts to enclose a portion of the cytoplasm.
    GO:0006914    autophagy    The process in which cells digest parts of their own cytoplasm; allows for both recycling of macromolecular constituents under conditions of cellular stress and remodeling the intracellular structure for cell differentiation.
    GO:0000422    autophagy of mitochondrion    The autophagic process in which mitochondria are delivered to the vacuole and degraded in response to changing cellular conditions.
    GO:0006995    cellular response to nitrogen starvation    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 deprivation of nitrogen.
    GO:0032092    positive regulation of protein binding    Any process that activates or increases the frequency, rate or extent of protein binding.
cellular component
    GO:0005776    autophagosome    A double-membrane-bounded compartment that engulfs endogenous cellular material as well as invading microorganisms to target them to the vacuole/lysosome for degradation as part of macroautophagy.
    GO:0000421    autophagosome membrane    The lipid bilayer surrounding an autophagosome, a double-membrane-bounded vesicle in which endogenous cellular material is sequestered.
    GO:0030424    axon    The long process of a neuron that conducts nerve impulses, usually away from the cell body to the terminals and varicosities, which are sites of storage and release of neurotransmitter.
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    GO:0031410    cytoplasmic vesicle    A vesicle found in the cytoplasm of a cell.
    GO:0005856    cytoskeleton    Any of the various filamentous elements that form the internal framework of cells, and typically remain after treatment of the cells with mild detergent to remove membrane constituents and soluble components of the cytoplasm. The term embraces intermediate filaments, microfilaments, microtubules, the microtrabecular lattice, and other structures characterized by a polymeric filamentous nature and long-range order within the cell. The various elements of the cytoskeleton not only serve in the maintenance of cellular shape but also have roles in other cellular functions, including cellular movement, cell division, endocytosis, and movement of organelles.
    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:0030425    dendrite    A neuron projection that has a short, tapering, often branched, morphology, receives and integrates signals from other neurons or from sensory stimuli, and conducts a nerve impulse towards the axon or the cell body. In most neurons, the impulse is conveyed from dendrites to axon via the cell body, but in some types of unipolar neuron, the impulse does not travel via the cell body.
    GO:0012505    endomembrane system    A collection of membranous structures involved in transport within the cell. The main components of the endomembrane system are endoplasmic reticulum, Golgi bodies, vesicles, cell membrane and nuclear envelope. Members of the endomembrane system pass materials through each other or though the use of vesicles.
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0005874    microtubule    Any of the long, generally straight, hollow tubes of internal diameter 12-15 nm and external diameter 24 nm found in a wide variety of eukaryotic cells; each consists (usually) of 13 protofilaments of polymeric tubulin, staggered in such a manner that the tubulin monomers are arranged in a helical pattern on the microtubular surface, and with the alpha/beta axes of the tubulin subunits parallel to the long axis of the tubule; exist in equilibrium with pool of tubulin monomers and can be rapidly assembled or disassembled in response to physiological stimuli; concerned with force generation, e.g. in the spindle.
    GO:0005875    microtubule associated complex    Any multimeric complex connected to a microtubule.
    GO:0043025    neuronal cell body    The portion of a neuron that includes the nucleus, but excludes cell projections such as axons and dendrites.

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 Related Entries

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

UniProtKB/Swiss-Prot
        ATG4B_HUMAN | Q9Y4P12cy7 2d1i 2z0d 2zzp 5lxh 5lxi
        MLP3B_RAT | Q626251ugm 2k6q 2z0d 2zzp

(-) Related Entries Specified in the PDB File

2z0d