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(-) Description

Title :  CRYSTAL STRUCTURE OF HUMAN ERP44
 
Authors :  L. K. Wang, S. J. Li, F. Sun, C. C. Wang
Date :  25 Aug 07  (Deposition) - 08 Jul 08  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.60
Chains :  Asym. Unit :  A
Biol. Unit 1:  A  (1x)
Biol. Unit 2:  A  (2x)
Keywords :  Thioredoxin, Crfs Motif, Chaperone, Endoplasmic Reticulum, Stress Response (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  L. K. Wang, L. Wang, S. Vavassori, S. J. Li, H. Ke, T. Anelli, M. Degano, R. Ronzoni, R. Sitia, F. Sun, C. C. Wang
Crystal Structure Of Human Erp44 Shows A Dynamic Functional Modulation By Its Carboxy-Terminal Tail.
Embo Rep. 2008
PubMed-ID: 18552768  |  Reference-DOI: 10.1038/EMBOR.2008.88

(-) Compounds

Molecule 1 - THIOREDOXIN DOMAIN-CONTAINING PROTEIN 4
    Chains: A
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PGEX-6P-1
    Expression System Strain: BL21(DE3)PLYSS
    Expression System Vector Type: PLASMID
    Gene: TXNDC4, ERP44, KIAA0573
    Organism Common: HUMAN
    Organism Scientific: HOMO SAPIENS
    Synonym: ENDOPLASMIC RETICULUM RESIDENT PROTEIN ERP44

 Structural Features

(-) Chains, Units

  1
Asymmetric Unit : A
Biological Unit 1 (1x): A
Biological Unit 2 (2x): A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (3, 11)

Asymmetric Unit (3, 11)
No.NameCountTypeFull Name
1FMT2Ligand/IonFORMIC ACID
2MSE8Mod. Amino AcidSELENOMETHIONINE
3SIN1Ligand/IonSUCCINIC ACID
Biological Unit 1 (3, 11)
No.NameCountTypeFull Name
1FMT2Ligand/IonFORMIC ACID
2MSE8Mod. Amino AcidSELENOMETHIONINE
3SIN1Ligand/IonSUCCINIC ACID
Biological Unit 2 (3, 22)
No.NameCountTypeFull Name
1FMT4Ligand/IonFORMIC ACID
2MSE16Mod. Amino AcidSELENOMETHIONINE
3SIN2Ligand/IonSUCCINIC ACID

(-) Sites  (3, 3)

Asymmetric Unit (3, 3)
No.NameEvidenceResiduesDescription
1AC1SOFTWARELYS A:91 , ARG A:92 , ILE A:155 , TYR A:205BINDING SITE FOR RESIDUE SIN A 380
2AC2SOFTWAREHIS A:157 , HOH A:487BINDING SITE FOR RESIDUE FMT A 378
3AC3SOFTWAREARG A:30 , ASN A:206BINDING SITE FOR RESIDUE FMT A 379

(-) SS Bonds  (1, 1)

Asymmetric Unit
No.Residues
1A:272 -A:289

(-) Cis Peptide Bonds  (6, 6)

Asymmetric Unit
No.Residues
1Tyr A:78 -Pro A:79
2Asp A:113 -Pro A:114
3Cys A:289 -Pro A:290
4His A:328 -Arg A:329
5Arg A:329 -Glu A:330
6Glu A:330 -Phe A:331

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2R2J)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 2R2J)

(-) Exons   (0, 0)

(no "Exon" information available for 2R2J)

(-) 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:328
 aligned with ERP44_HUMAN | Q9BS26 from UniProtKB/Swiss-Prot  Length:406

    Alignment length:370
                                    41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       341       351       361       371       381       391       401
          ERP44_HUMAN    32 TSLDTENIDEILNNADVALVNFYADWCRFSQMLHPIFEEASDVIKEEFPNENQVVFARVDCDQHSDIAQRYRISKYPTLKLFRNGMMMKREYRGQRSVKALADYIRQQKSDPIQEIRDLAEITTLDRSKRNIIGYFEQKDSDNYRVFERVANILHDDCAFLSAFGDVSKPERYSGDNIIYKPPGHSAPDMVYLGAMTNFDVTYNWIQDKCVPLVREITFENGEELTEEGLPFLILFHMKEDTESLEIFQNEVARQLISEKGTINFLHADCDKFRHPLLHIQKTPADCPVIAIDSFRHMYVFGDFKDVLIPGKLKQFVFDLHSGKLHREFHHGPDPTDTAPGEQAQDVASSPPESSFQKLAPSEYRYTLLR 401
               SCOP domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains Thioredoxin-2r2jA01 A:3-110                                                                                 --------            -------Thioredoxin_6-2r2jA02 A:138-321                                                                                                                                                         ----------                   ---------------------- Pfam domains
         Sec.struct. author ......hhhhhhhhh.eeeeeee...hhhhhhhhhhhhhhhhhhh...---..eeeeeee...hhhhhhhh...ee.eeeeee..eeeeee.....hhhhhhhhhhhhhh...eee------------..eeeeee....hhhhhhhhhhhhhhh...eeeeee...--------.eeeee........ee......hhhhhhhhhhhhhh...ee.hhhhhhhhhh....eeeeee....hhhhhhhhhhhhhhhhhhh...eeeeee...hhhhhhhh..hhhhh.eeeee....eee...hhhhhh.hhhhhhhhhhhhh......-------------------......hhhhhh......ee.. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2r2j A   3 TSLDTENIDEILNNADVALVNFYADWCRFSQmLHPIFEEASDVIKEEF---NQVVFARVDCDQHSDIAQRYRISKYPTLKLFRNGmmmKREYRGQRSVKALADYIRQQKSDPIQEI------------KRNIIGYFEQKDSDNYRVFERVANILHDDCAFLSAFGDV--------DNIIYKPPGHSAPDmVYLGAmTNFDVTYNWIQDKCVPLVREITFENGEELTEEGLPFLILFHmKEDTESLEIFQNEVARQLISEKGTINFLHADCDKFRHPLLHIQKTPADCPVIAIDSFRHmYVFGDFKDVLIPGKLKQFVFDLHSGKLHREF-------------------SSPPESSFQKLAPSEYRYTLLR 372
                                    12        22        32 |      42       | - |      62        72        82     |||92       102       112     |   -       132       142       152       162      |  -     | 182       192     | 202       212       222       232       242       252       262       272       282       292       302       312       322        |-         -       352       362       372
                                                          34-MSE          50  54                                88-MSE                       118          131                                   169      178           192-MSE |                                       240-MSE                                                     300-MSE                        331                 351                     
                                                                                                                 89-MSE                                                                                                      198-MSE                                                                                                                                                                          
                                                                                                                  90-MSE
   Legend:   → Mismatch (orange background)
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  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (0, 0)

(no "SCOP Domain" information available for 2R2J)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 2R2J)

(-) Pfam Domains  (2, 2)

Asymmetric Unit
(-)
Clan: Thioredoxin (367)

(-) Gene Ontology  (13, 13)

Asymmetric Unit(hide GO term definitions)
Chain A   (ERP44_HUMAN | Q9BS26)
molecular function
    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:0003756    protein disulfide isomerase activity    Catalysis of the rearrangement of both intrachain and interchain disulfide bonds in proteins.
biological process
    GO:0045454    cell redox homeostasis    Any process that maintains the redox environment of a cell or compartment within a cell.
    GO:0009100    glycoprotein metabolic process    The chemical reactions and pathways involving glycoproteins, any protein that contains covalently bound glycose (i.e. monosaccharide) residues; the glycose occurs most commonly as oligosaccharide or fairly small polysaccharide but occasionally as monosaccharide.
    GO:0006457    protein folding    The process of assisting in the covalent and noncovalent assembly of single chain polypeptides or multisubunit complexes into the correct tertiary structure.
    GO:0034976    response to endoplasmic reticulum stress    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 stress acting at the endoplasmic reticulum. ER stress usually results from the accumulation of unfolded or misfolded proteins in the ER lumen.
    GO:0006986    response to unfolded protein    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 unfolded protein stimulus.
cellular component
    GO:0009986    cell surface    The external part of the cell wall and/or plasma membrane.
    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:0005788    endoplasmic reticulum lumen    The volume enclosed by the membranes of the endoplasmic reticulum.
    GO:0005789    endoplasmic reticulum membrane    The lipid bilayer surrounding the endoplasmic reticulum.
    GO:0005793    endoplasmic reticulum-Golgi intermediate compartment    A complex system of membrane-bounded compartments located between endoplasmic reticulum (ER) and the Golgi complex, with a distinctive membrane protein composition; involved in ER-to-Golgi and Golgi-to-ER transport.
    GO:0070062    extracellular exosome    A vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.

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  2r2j
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  ERP44_HUMAN | Q9BS26
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 Related Entries

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

UniProtKB/Swiss-Prot
        ERP44_HUMAN | Q9BS26: 5gu6 5gu7 5hqp

(-) Related Entries Specified in the PDB File

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