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(-) Description

Title :  HUMAN ALPHAB CRYSTALLIN
 
Authors :  A. Laganowsky, M. R. Sawaya, D. Cascio, D. Eisenberg
Date :  11 Dec 09  (Deposition) - 12 May 10  (Release) - 14 Jul 10  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  3.32
Chains :  Asym. Unit :  A
Biol. Unit 1:  A  (2x)
Keywords :  Lens Transparency, Polydispersity, Protein Aggregation, Crystallin, Eye Lens Protein, Chaperone (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  A. Laganowsky, J. L. Benesch, M. Landau, L. Ding, M. R. Sawaya, D. Cascio, Q. Huang, C. V. Robinson, J. Horwitz, D. Eisenberg
Crystal Structures Of Truncated Alphaa And Alphab Crystallins Reveal Structural Mechanisms Of Polydispersity Important For Eye Lens Function.
Protein Sci. V. 19 1031 2010
PubMed-ID: 20440841  |  Reference-DOI: 10.1002/PRO.380

(-) Compounds

Molecule 1 - ALPHA-CRYSTALLIN B CHAIN
    ChainsA
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPET28
    Expression System StrainBL21(DE3)
    Expression System Taxid562
    Expression System Vector TypePLASMID
    FragmentRESIDUES 68-162
    GeneCRYA2, CRYAB
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    SynonymALPHA(B)-CRYSTALLIN, ROSENTHAL FIBER COMPONENT, HEAT SHOCK PROTEIN BETA-5, HSPB5, RENAL CARCINOMA ANTIGEN NY-REN-27

 Structural Features

(-) Chains, Units

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

Summary Information (see also Sequences/Alignments below)

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

Asymmetric Unit (1, 2)
No.NameCountTypeFull Name
1SO42Ligand/IonSULFATE ION
Biological Unit 1 (1, 4)
No.NameCountTypeFull Name
1SO44Ligand/IonSULFATE ION

(-) Sites  (2, 2)

Asymmetric Unit (2, 2)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREARG A:116 , PHE A:118 , ARG A:120BINDING SITE FOR RESIDUE SO4 A 1
2AC2SOFTWAREASP A:96 , VAL A:97 , GLN A:108 , ARG A:149BINDING SITE FOR RESIDUE SO4 A 2

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 3L1G)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 3L1G)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (4, 4)

Asymmetric Unit (4, 4)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_069528D109HCRYAB_HUMANDisease (MFM2)387907339AD109H
2UniProtVAR_007899R120GCRYAB_HUMANDisease (MFM2)28929489AR120G
3UniProtVAR_070035G154SCRYAB_HUMANDisease (CMD1II)150516929AG154S
4UniProtVAR_070036R157HCRYAB_HUMANDisease (CMD1II)141638421AR157H

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 1 (4, 8)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_069528D109HCRYAB_HUMANDisease (MFM2)387907339AD109H
2UniProtVAR_007899R120GCRYAB_HUMANDisease (MFM2)28929489AR120G
3UniProtVAR_070035G154SCRYAB_HUMANDisease (CMD1II)150516929AG154S
4UniProtVAR_070036R157HCRYAB_HUMANDisease (CMD1II)141638421AR157H

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

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 3L1G)

(-) Exons   (0, 0)

(no "Exon" information available for 3L1G)

(-) 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:95
 aligned with CRYAB_HUMAN | P02511 from UniProtKB/Swiss-Prot  Length:175

    Alignment length:95
                                    77        87        97       107       117       127       137       147       157     
          CRYAB_HUMAN    68 MRLEKDRFSVNLDVKHFSPEELKVKVLGDVIEVHGKHEERQDEHGFISREFHRKYRIPADVDPLTITSSLSSDGVLTVNGPRKQVSGPERTIPIT 162
               SCOP domains ----------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------- CATH domains
               Pfam domains HSP20-3l1gA01 A:68-162                                                                          Pfam domains
         Sec.struct. author ......eeeeeee....hhhhheeeee..eeeee....hhhhh.........eeee...........eeee...eeeeeee.............. Sec.struct. author
                 SAPs(SNPs) -----------------------------------------H----------G---------------------------------S--H----- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------- Transcript
                 3l1g A  68 MRLEKDRFSVNLDVKHFSPEELKVKVLGDVIEVHGKHEERQDEHGFISREFHRKYRIPADVDPLTITSSLSSDGVLTVNGPRKQVSGPERTIPIT 162
                                    77        87        97       107       117       127       137       147       157     

   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  (0, 0)

(no "SCOP Domain" information available for 3L1G)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3L1G)

(-) Pfam Domains  (1, 1)

Asymmetric Unit
(-)
Clan: HSP20 (17)

(-) Gene Ontology  (46, 46)

Asymmetric Unit(hide GO term definitions)
Chain A   (CRYAB_HUMAN | P02511)
molecular function
    GO:0008092    cytoskeletal protein binding    Interacting selectively and non-covalently with any protein component of any cytoskeleton (actin, microtubule, or intermediate filament cytoskeleton).
    GO:0042802    identical protein binding    Interacting selectively and non-covalently with an identical protein or proteins.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0008017    microtubule binding    Interacting selectively and non-covalently with microtubules, filaments composed of tubulin monomers.
    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:0005212    structural constituent of eye lens    The action of a molecule that contributes to the structural integrity of the lens of an eye.
    GO:0051082    unfolded protein binding    Interacting selectively and non-covalently with an unfolded protein.
biological process
    GO:0007568    aging    A developmental process that is a deterioration and loss of function over time. Aging includes loss of functions such as resistance to disease, homeostasis, and fertility, as well as wear and tear. Aging includes cellular senescence, but is more inclusive. May precede death and may succeed developmental maturation (GO:0021700).
    GO:0060561    apoptotic process involved in morphogenesis    Any apoptotic process that contributes to the shaping of an anatomical structure.
    GO:0043010    camera-type eye development    The process whose specific outcome is the progression of the camera-type eye over time, from its formation to the mature structure. The camera-type eye is an organ of sight that receives light through an aperture and focuses it through a lens, projecting it on a photoreceptor field.
    GO:0071480    cellular response to gamma radiation    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 gamma radiation stimulus. Gamma radiation is a form of electromagnetic radiation (EMR) or light emission of a specific frequency produced from sub-atomic particle interaction, such as electron-positron annihilation and radioactive decay. Gamma rays are generally characterized as EMR having the highest frequency and energy, and also the shortest wavelength, within the electromagnetic radiation spectrum.
    GO:0002088    lens development in camera-type eye    The process whose specific outcome is the progression of the lens over time, from its formation to the mature structure. The lens is a transparent structure in the eye through which light is focused onto the retina. An example of this process is found in Mus musculus.
    GO:0031109    microtubule polymerization or depolymerization    Assembly or disassembly of microtubules by the addition or removal of tubulin heterodimers from a microtubule.
    GO:0006936    muscle contraction    A process in which force is generated within muscle tissue, resulting in a change in muscle geometry. Force generation involves a chemo-mechanical energy conversion step that is carried out by the actin/myosin complex activity, which generates force through ATP hydrolysis.
    GO:0007517    muscle organ development    The process whose specific outcome is the progression of the muscle over time, from its formation to the mature structure. The muscle is an organ consisting of a tissue made up of various elongated cells that are specialized to contract and thus to produce movement and mechanical work.
    GO:0043066    negative regulation of apoptotic process    Any process that stops, prevents, or reduces the frequency, rate or extent of cell death by apoptotic process.
    GO:0030308    negative regulation of cell growth    Any process that stops, prevents, or reduces the frequency, rate, extent or direction of cell growth.
    GO:0043154    negative regulation of cysteine-type endopeptidase activity involved in apoptotic process    Any process that stops, prevents, or reduces the frequency, rate or extent of a cysteine-type endopeptidase activity involved in the apoptotic process.
    GO:0010629    negative regulation of gene expression    Any process that decreases the frequency, rate or extent of gene expression. Gene expression is the process in which a gene's coding sequence is converted into a mature gene product or products (proteins or RNA). This includes the production of an RNA transcript as well as any processing to produce a mature RNA product or an mRNA or circRNA (for protein-coding genes) and the translation of that mRNA or circRNA into protein. Protein maturation is included when required to form an active form of a product from an inactive precursor form.
    GO:0032387    negative regulation of intracellular transport    Any process that stops, prevents, or reduces the frequency, rate or extent of the directed movement of substances within cells.
    GO:2000378    negative regulation of reactive oxygen species metabolic process    Any process that stops, prevents or reduces the frequency, rate or extent of reactive oxygen species metabolic process.
    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: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:0010941    regulation of cell death    Any process that modulates the rate or frequency of cell death. Cell death is the specific activation or halting of processes within a cell so that its vital functions markedly cease, rather than simply deteriorating gradually over time, which culminates in cell death.
    GO:1900034    regulation of cellular response to heat    Any process that modulates the frequency, rate or extent of cellular response to heat.
    GO:0032355    response to estradiol    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 estradiol, a C18 steroid hormone hydroxylated at C3 and C17 that acts as a potent estrogen.
    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:0051403    stress-activated MAPK cascade    A series of molecular signals in which a stress-activated MAP kinase cascade relays one or more of the signals; MAP kinase cascades involve at least three protein kinase activities and culminate in the phosphorylation and activation of a MAP kinase.
    GO:0007021    tubulin complex assembly    The aggregation and bonding together of alpha- and beta-tubulin to form a tubulin heterodimer.
cellular component
    GO:0005794    Golgi apparatus    A compound membranous cytoplasmic organelle of eukaryotic cells, consisting of flattened, ribosome-free vesicles arranged in a more or less regular stack. The Golgi apparatus differs from the endoplasmic reticulum in often having slightly thicker membranes, appearing in sections as a characteristic shallow semicircle so that the convex side (cis or entry face) abuts the endoplasmic reticulum, secretory vesicles emerging from the concave side (trans or exit face). In vertebrate cells there is usually one such organelle, while in invertebrates and plants, where they are known usually as dictyosomes, there may be several scattered in the cytoplasm. The Golgi apparatus processes proteins produced on the ribosomes of the rough endoplasmic reticulum; such processing includes modification of the core oligosaccharides of glycoproteins, and the sorting and packaging of proteins for transport to a variety of cellular locations. Three different regions of the Golgi are now recognized both in terms of structure and function: cis, in the vicinity of the cis face, trans, in the vicinity of the trans face, and medial, lying between the cis and trans regions.
    GO:0031674    I band    A region of a sarcomere that appears as a light band on each side of the Z disc, comprising a region of the sarcomere where thin (actin) filaments are not overlapped by thick (myosin) filaments; contains actin, troponin, and tropomyosin; each sarcomere includes half of an I band at each end.
    GO:0030018    Z disc    Platelike region of a muscle sarcomere to which the plus ends of actin filaments are attached.
    GO:0032432    actin filament bundle    An assembly of actin filaments that are on the same axis but may be oriented with the same or opposite polarities and may be packed with different levels of tightness.
    GO:0009986    cell surface    The external part of the cell wall and/or plasma membrane.
    GO:0043292    contractile fiber    Fibers, composed of actin, myosin, and associated proteins, found in cells of smooth or striated muscle.
    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.
    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.
    GO:0015630    microtubule cytoskeleton    The part of the cytoskeleton (the internal framework of a cell) composed of microtubules and associated proteins.
    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:0043209    myelin sheath    An electrically insulating fatty layer that surrounds the axons of many neurons. It is an outgrowth of glial cells: Schwann cells supply the myelin for peripheral neurons while oligodendrocytes supply it to those of the central nervous system.
    GO:0005654    nucleoplasm    That part of the nuclear content other than the chromosomes or the nucleolus.
    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:0005886    plasma membrane    The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

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 Related Entries

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

UniProtKB/Swiss-Prot
        CRYAB_HUMAN | P025112klr 2n0k 2wj7 2y1y 2y1z 2y22 2ygd 3j07 3sgm 3sgn 3sgo 3sgp 3sgr 3sgs 4m5s 4m5t

(-) Related Entries Specified in the PDB File

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