PMID- 9159481
OWN - NLM
STAT- MEDLINE
DCOM- 19970616
LR  - 20131121
IS  - 0022-2836 (Print)
IS  - 0022-2836 (Linking)
VI  - 268
IP  - 2
DP  - 1997 May 2
TI  - Comparison of the three-dimensional structures of recombinant human H and horse L
      ferritins at high resolution.
PG  - 424-48
AB  - Mammalian ferritins are 24-mers assembled from two types of polypeptide chain
      which provide the molecule with different functions. H(eavy) chains catalyse the 
      first step in iron storage, the oxidation of iron(II). L(ight) chains promote the
      nucleation of the mineral ferrihydrite enabling storage of iron(III) inside the
      protein shell. We report here the comparison of the three-dimensional structures 
      of recombinant human H chain (HuHF) and horse L chain (HoLF) ferritin
      homopolymers, which have been refined at 1.9 A resolution. There is 53% sequence 
      identity between these molecules, and the two structures are very similar, the H 
      and L subunit alpha-carbons superposing to within 0.5 A rms deviation with 41
      water molecules in common. Nevertheless, there are significant important
      differences which can be related to differences in function. In particular, the
      centres of the four-helix bundles contain distinctive groups of hydrophilic
      residues which have been associated with ferroxidase activity in H chains and
      enhanced stability in L chains. L chains contain a group of glutamates associated
      with mineralisation within the iron storage cavity of the protein.
FAU - Hempstead, P D
AU  - Hempstead PD
AD  - Krebs Institute for Biomolecular Research, Department of Molecular Biology and
      Biotechnology, University of Sheffield, England.
FAU - Yewdall, S J
AU  - Yewdall SJ
FAU - Fernie, A R
AU  - Fernie AR
FAU - Lawson, D M
AU  - Lawson DM
FAU - Artymiuk, P J
AU  - Artymiuk PJ
FAU - Rice, D W
AU  - Rice DW
FAU - Ford, G C
AU  - Ford GC
FAU - Harrison, P M
AU  - Harrison PM
LA  - eng
SI  - PDB/1AEW
SI  - PDB/2FHA
GR  - Wellcome Trust/United Kingdom
PT  - Comparative Study
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - England
TA  - J Mol Biol
JT  - Journal of molecular biology
JID - 2985088R
RN  - 0 (Ions)
RN  - 0 (Metals)
RN  - 059QF0KO0R (Water)
RN  - 9007-73-2 (Ferritins)
RN  - 9013-31-4 (Apoferritins)
RN  - EC 1.16.3.1 (Ceruloplasmin)
SB  - IM
MH  - Amino Acid Sequence
MH  - Animals
MH  - Apoferritins
MH  - Binding Sites
MH  - Ceruloplasmin/chemistry
MH  - Ferritins/*ultrastructure
MH  - Horses
MH  - Humans
MH  - Hydrogen Bonding
MH  - Ions
MH  - Metals
MH  - Models, Molecular
MH  - Molecular Sequence Data
MH  - Protein Folding
MH  - Protein Structure, Secondary
MH  - Protein Structure, Tertiary
MH  - Sequence Alignment
MH  - Solubility
MH  - Water/chemistry
EDAT- 1997/05/02 00:00
MHDA- 1997/05/02 00:01
CRDT- 1997/05/02 00:00
PHST- 1997/05/02 00:00 [pubmed]
PHST- 1997/05/02 00:01 [medline]
PHST- 1997/05/02 00:00 [entrez]
AID - S0022-2836(97)90970-0 [pii]
AID - 10.1006/jmbi.1997.0970 [doi]
PST - ppublish
SO  - J Mol Biol. 1997 May 2;268(2):424-48. doi: 10.1006/jmbi.1997.0970.