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2fam

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{{STRUCTURE_2fam| PDB=2fam | SCENE= }}
{{STRUCTURE_2fam| PDB=2fam | SCENE= }}
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'''X-RAY CRYSTAL STRUCTURE OF FERRIC APLYSIA LIMACINA MYOGLOBIN IN DIFFERENT LIGANDED STATES'''
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===X-RAY CRYSTAL STRUCTURE OF FERRIC APLYSIA LIMACINA MYOGLOBIN IN DIFFERENT LIGANDED STATES===
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==Overview==
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The X-ray crystal structure of the ligand-free ferric form of Aplysia limacina myoglobin (pH 6.0) has been refined at 1.7 A resolution (R = 15.1%), and its cyanide, thiocyanate and imidazole derivatives studied by difference Fourier techniques at atomic resolution. The crystallographic R-factors of the three different derivatives reported are 16.1%, 16.1% and 15.6% at 1.8 A, 2.0 A and 2.0 A resolution, respectively. The present results have been analyzed in parallel with previous crystallographic studies on the molecular structures of the fluoride and azide derivatives of ferric Aplysia limacina myoglobin. Ligand binding to the distal site of the heme pocket results in different networks of hydrogen bonds involving to various degrees the bound ligand, residue Arg(66)E10, the heme propionate III, ordered water molecules and/or protein backbone atoms from the CD region. In particular, Arg(66)E10 stabilizes the bound ligand and compensates for the absence of the hydrogen bond donor residue HisE7, commonly present in oxygen-carrying globins.
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{{ABSTRACT_PUBMED_8411158}}
==About this Structure==
==About this Structure==
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[[Category: Rizzi, M.]]
[[Category: Rizzi, M.]]
[[Category: Oxygen storage]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 03:40:00 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 12:18:28 2008''

Revision as of 09:18, 27 July 2008

Image:2fam.png

Template:STRUCTURE 2fam

X-RAY CRYSTAL STRUCTURE OF FERRIC APLYSIA LIMACINA MYOGLOBIN IN DIFFERENT LIGANDED STATES

Template:ABSTRACT PUBMED 8411158

About this Structure

2FAM is a Single protein structure of sequence from Aplysia limacina. Full crystallographic information is available from OCA.

Reference

X-ray crystal structure of ferric Aplysia limacina myoglobin in different liganded states., Conti E, Moser C, Rizzi M, Mattevi A, Lionetti C, Coda A, Ascenzi P, Brunori M, Bolognesi M, J Mol Biol. 1993 Oct 5;233(3):498-508. PMID:8411158

Page seeded by OCA on Sun Jul 27 12:18:28 2008

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