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(-) Description

Title :  THE DYNAMIC ALPHA-HELIX STRUCTURE OF MICELLE-BOUND HUMAN AMYLIN.
 
Authors :  S. M. Patil, S. Xu, S. R. Sheftic, A. T. Alexandrescu
Date :  21 Nov 08  (Deposition) - 24 Feb 09  (Release) - 09 Jun 09  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A  (30x)
Keywords :  Iapp, Amyloid, Micelle-Bound, Type Ii Diabetes, Hormone, Amidation, Cleavage On Pair Of Basic Residues, Polymorphism, Secreted (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  S. M. Patil, S. Xu, S. R. Sheftic, A. T. Alexandrescu
Dynamic Alpha-Helix Structure Of Micelle-Bound Human Amylin.
J. Biol. Chem. V. 284 11982 2009
PubMed-ID: 19244249  |  Reference-DOI: 10.1074/JBC.M809085200
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - ISLET AMYLOID POLYPEPTIDE
    ChainsA
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System Taxid562
    GeneIAPP
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    Other DetailsRECOMBINANT 15N-LABELED AMYLIN WAS PURCHASED FROM RPEPTIDE
    SynonymAMYLIN, DIABETES-ASSOCIATED PEPTIDE, DAP, INSULINOMA AMYLOID PEPTIDE

 Structural Features

(-) Chains, Units

  
NMR Structure (30x)

Summary Information (see also Sequences/Alignments below)

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

(no "Ligand,Modified Residues,Ions" information available for 2KB8)

(-) Sites  (0, 0)

(no "Site" information available for 2KB8)

(-) SS Bonds  (1, 1)

NMR Structure
No.Residues
1A:2 -A:7

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 2KB8)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (1, 1)

NMR Structure (1, 1)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_012080S53GIAPP_HUMANPolymorphism1800203AS20G

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

(-) PROSITE Motifs  (1, 1)

NMR Structure (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1CALCITONINPS00258 Calcitonin / CGRP / IAPP family signature.IAPP_HUMAN35-49  1A:2-16

(-) Exons   (1, 1)

NMR Structure (1, 1)
 ENSEMBLUniProtKBPDB
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength
1.1ENST000002406521ENSE00000994897chr12:21525802-21525938137IAPP_HUMAN-00--
1.2ENST000002406522ENSE00000822246chr12:21526271-2152636595IAPP_HUMAN1-27270--
1.3ENST000002406523ENSE00000822247chr12:21531171-215329111741IAPP_HUMAN27-89631A:1-3737

(-) Sequences/Alignments

NMR Structure
   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:37
 aligned with IAPP_HUMAN | P10997 from UniProtKB/Swiss-Prot  Length:89

    Alignment length:37
                                    43        53        63       
            IAPP_HUMAN   34 KCNTATCATQRLANFLVHSSNNFGAILSSTNVGSNTY 70
               SCOP domains ------------------------------------- SCOP domains
               CATH domains ------------------------------------- CATH domains
               Pfam domains Calc_CGRP_IAPP-2kb8A01 A:1-37         Pfam domains
         Sec.struct. author .....hhhhhhhhhhhhhhhhhhhhhhh......... Sec.struct. author
                 SAPs(SNPs) -------------------G----------------- SAPs(SNPs)
                    PROSITE -CALCITONIN     --------------------- PROSITE
               Transcript 1 Exon 1.3  PDB: A:1-37 UniProt: 27-89  Transcript 1
                  2kb8 A  1 KCNTATCATQRLANFLVHSSNNFGAILSSTNVGSNTY 37
                                    10        20        30       

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  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 2KB8)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 2KB8)

(-) Pfam Domains  (1, 1)

NMR Structure

(-) Gene Ontology  (14, 14)

NMR Structure(hide GO term definitions)
Chain A   (IAPP_HUMAN | P10997)
molecular function
    GO:0005179    hormone activity    The action characteristic of a hormone, any substance formed in very small amounts in one specialized organ or group of cells and carried (sometimes in the bloodstream) to another organ or group of cells in the same organism, upon which it has a specific regulatory action. The term was originally applied to agents with a stimulatory physiological action in vertebrate animals (as opposed to a chalone, which has a depressant action). Usage is now extended to regulatory compounds in lower animals and plants, and to synthetic substances having comparable effects; all bind receptors and trigger some biological process.
    GO:0042802    identical protein binding    Interacting selectively and non-covalently with an identical protein or proteins.
    GO:0005102    receptor binding    Interacting selectively and non-covalently with one or more specific sites on a receptor molecule, a macromolecule that undergoes combination with a hormone, neurotransmitter, drug or intracellular messenger to initiate a change in cell function.
biological process
    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:0007267    cell-cell signaling    Any process that mediates the transfer of information from one cell to another. This process includes signal transduction in the receiving cell and, where applicable, release of a ligand and any processes that actively facilitate its transport and presentation to the receiving cell. Examples include signaling via soluble ligands, via cell adhesion molecules and via gap junctions.
    GO:0044267    cellular protein metabolic process    The chemical reactions and pathways involving a specific protein, rather than of proteins in general, occurring at the level of an individual cell. Includes cellular protein modification.
    GO:0042755    eating behavior    The specific behavior of an organism relating to the intake of food, any substance (usually solid) that can be metabolized by an organism to give energy and build tissue.
    GO:0045779    negative regulation of bone resorption    Any process that stops, prevents, or reduces the frequency, rate or extent of bone resorption.
    GO:0045596    negative regulation of cell differentiation    Any process that stops, prevents, or reduces the frequency, rate or extent of cell differentiation.
    GO:0019233    sensory perception of pain    The series of events required for an organism to receive a painful stimulus, convert it to a molecular signal, and recognize and characterize the signal. Pain is medically defined as the physical sensation of discomfort or distress caused by injury or illness, so can hence be described as a harmful stimulus which signals current (or impending) tissue damage. Pain may come from extremes of temperature, mechanical damage, electricity or from noxious chemical substances. This is a neurological process.
    GO:0007165    signal transduction    The cellular process in which a signal is conveyed to trigger a change in the activity or state of a cell. Signal transduction begins with reception of a signal (e.g. a ligand binding to a receptor or receptor activation by a stimulus such as light), or for signal transduction in the absence of ligand, signal-withdrawal or the activity of a constitutively active receptor. Signal transduction ends with regulation of a downstream cellular process, e.g. regulation of transcription or regulation of a metabolic process. Signal transduction covers signaling from receptors located on the surface of the cell and signaling via molecules located within the cell. For signaling between cells, signal transduction is restricted to events at and within the receiving cell.
cellular component
    GO:0005576    extracellular region    The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.
    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: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
        IAPP_HUMAN | P109971kuw 2g48 2l86 3dg1 3fpo 3fr1 3fth 3ftk 3ftl 3ftr 3g7v 3g7w 3hgz 5k5g 5knz 5ko0 5mgq

(-) Related Entries Specified in the PDB File

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