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PDBsum entry 1ecd
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Oxygen transport
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PDB id
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1ecd
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References listed in PDB file
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Key reference
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Title
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Structure of erythrocruorin in different ligand states refined at 1.4 a resolution.
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Authors
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W.Steigemann,
E.Weber.
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Ref.
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J Mol Biol, 1979,
127,
309-338.
[DOI no: ]
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PubMed id
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Abstract
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No abstract given.
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Figure 7.
FIG. 7. Stereoscopic drawin of the haem group and its environment in met-erythrocruorin.
The iron-ligand bonds are shown by thin lins. The bond to the water molecule is dashed, since
it. is 3 A from th iron and may not really be co-ordinated to it. Polar linkages of the haem to t,hc
globin and hydrogen bonds involving water molecules are represented by thin lines.
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Figure 8.
FIG. 8. Difference Fourier maps with coefficients iF,(deri)/ - lF,(deoxy)l, c,(deoxy), where
PJderi) are the observed structure factors of the ligation form aquomet, cerbonmonoxy, and
cyaomet, respectively. The oc,(deoxy) are the calcuated phases of the refined deoxy model.
Composite drawing of several sections projected parallel to the haem plane, represented by
the heevy line. The vinyl-substit)uted pyrrole residues are pointing awa from the observer. The
distal ide is on the left, the proximal on the right. Positive density is dran with solid lies,
negative with broken lines. Contour lines beginning at 0.16 eAms with a separation of 0.08 eA-3.
(a) Coefficients lE'',(aquomet) 1 - lF,(deoxy) 1, a,(deoxy).
(b) Coefficients lP,(crtrbonmonoxy) 1 - IP,(deoxy) 1, cc,(deoxy).
(0) Coefficients IF, (oyanomet) 1 - lF,(deoxy) /, cr,(deoxy).
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The above figures are
reprinted
by permission from Elsevier:
J Mol Biol
(1979,
127,
309-338)
copyright 1979.
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Secondary reference #1
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Title
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The structure of oxy-Erythrocruorin at 1.4 x resolution.
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Authors
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E.Weber,
W.Steigemann,
T.A.Jones,
R.Huber.
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Ref.
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J Mol Biol, 1978,
120,
327-336.
[DOI no: ]
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PubMed id
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Figure 3.
PIG. 3. Difference Fourier map with coefficients ([FO,oxYI-l 1'',,,,,,,-,,,1), ~~,nso~r-~~~~, where
I~``.OXYI are the observed structure factor amplitudes of the oxygenated form, 1 F,,,so,, _ uaol arc
tho calclated structure factor amplitudes of the deoxy model oming the half occupied deoxy-
water molecule, and ~~,nso~r-s~o are calculated phases of this model. Comosite drawing of several
sections projected parallel to the haem plane. The vinyl-substituted pyrrol residues are pointing
way from the observer (see Fig. 6). Positive density drawn with solid lines, negative with
roken line. Contour lines beginning at 0.16 e Am3 with a separation of 0.08 e Ae3. A model
nterpretation is overlaid.
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Figure 6.
FIG. 6. Stereoscopic view of haem and lignds in the oxy model. The view is as those in the
Fourier maps.
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The above figures are
reproduced from the cited reference
with permission from Elsevier
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Secondary reference #2
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Title
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The atomic structure of erythrocruorin in the light of the chemical sequence and its comparison with myoglobin.
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Authors
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R.Huber,
O.Epp,
W.Steigemann,
H.Formanek.
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Ref.
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Eur J Biochem, 1971,
19,
42-50.
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PubMed id
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Secondary reference #3
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Title
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Structures of deoxy- And carbonmonoxy-Erythrocruorin.
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Authors
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R.Huber,
O.Epp,
H.Formanek.
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Ref.
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J Mol Biol, 1970,
52,
349-354.
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PubMed id
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