1H7D

Solution structure of the 49 aa presequence of 5-ALAS


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 30 
  • Conformers Submitted: 30 
  • Selection Criteria: LOW TARGET FUNCTION 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The Solution Structure and Heme Binding of the Presequence of Murine 5-Aminolevulinate Synthase

Goodfellow, B.J.Dias, J.S.Ferreira, G.C.Henklein, P.Wray, V.Macedo, A.L.

(2001) FEBS Lett. 505: 325

  • Primary Citation of Related Structures:  1H7J

  • PubMed Abstract: 
  • The mitochondrial import of 5-aminolevulinate synthase (ALAS), the first enzyme of the mammalian heme biosynthetic pathway, requires the N-terminal presequence. The 49 amino acid presequence transit peptide (psALAS) for murine erythroid ALAS was chem ...

    The mitochondrial import of 5-aminolevulinate synthase (ALAS), the first enzyme of the mammalian heme biosynthetic pathway, requires the N-terminal presequence. The 49 amino acid presequence transit peptide (psALAS) for murine erythroid ALAS was chemically synthesized, and circular dichroism and (1)H nuclear magnetic resonance (NMR) spectroscopies used to determine structural elements in trifluoroethanol/H(2)O solutions and micellar environments. A well defined amphipathic alpha-helix, spanning L22 to F33, was present in psALAS in 50% trifluoroethanol. Further, a short alpha-helix, defined by A5-L8, was also apparent in the 26 amino acid N-terminus peptide, when its structure was determined in sodium dodecyl sulfate. Heme inhibition of ALAS mitochondrial import has been reported to be mediated through cysteine residues in presequence heme regulatory motifs (HRMs). A UV/visible and (1)H NMR study of hemin and psALAS indicated that a heme-peptide interaction occurs and demonstrates, for the first time, that heme interacts with the HRMs of psALAS.


    Organizational Affiliation

    Departamento de Quimica, Universidade de Aveiro, 3810-193 Aviero, Portugal.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
AMINOLEVULINIC ACID SYNTHASE 2, ERYTHROID
A
49Mus musculusGene Names: Alas2
EC: 2.3.1.37
Find proteins for P08680 (Mus musculus)
Go to UniProtKB:  P08680
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 30 
  • Conformers Submitted: 30 
  • Selection Criteria: LOW TARGET FUNCTION 
  • Olderado: 1H7D Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-10-18
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance