2cj4

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[[Image:2cj4.gif|left|200px]]
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{{STRUCTURE_2cj4| PDB=2cj4 | SCENE= }}
{{STRUCTURE_2cj4| PDB=2cj4 | SCENE= }}
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'''CRYSTAL STRUCTURE OF A CELL WALL INVERTASE INHIBITOR FROM TOBACCO AT PH 4.6'''
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===CRYSTAL STRUCTURE OF A CELL WALL INVERTASE INHIBITOR FROM TOBACCO AT PH 4.6===
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==Overview==
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Plant acid invertases catalyse the breakdown of sucrose. Their activity is tightly regulated through interaction with specific protein inhibitors. The complex between the cell-wall invertase inhibitor Nt-CIF and its target enzyme is stable only at acidic pH, as found in the plant cell wall. Since the pH in this compartment can be modulated between pH 4 and 6 in planta, the rapid dissociation of the inhibitor-enzyme complex at neutral pH may represent a regulatory event. Here, it is analyzed whether the inhibitory component undergoes structural rearrangements upon changes in the pH environment. Six crystal forms grown at pH 4.6-9.5 and diffracting up to 1.63 Angstrom indicate only small structural changes in CIF. This suggests that complex dissociation at neutral pH is mediated either by rearrangements in the enzyme or by a complex pattern of surface charges in the inhibitor-enzyme binding interface.
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The line below this paragraph, {{ABSTRACT_PUBMED_16699194}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 16699194 is the PubMed ID number.
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{{ABSTRACT_PUBMED_16699194}}
==About this Structure==
==About this Structure==
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[[Category: Inhibitor]]
[[Category: Inhibitor]]
[[Category: Protein binding]]
[[Category: Protein binding]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 05:01:45 2008''

Revision as of 02:01, 29 July 2008

Template:STRUCTURE 2cj4

CRYSTAL STRUCTURE OF A CELL WALL INVERTASE INHIBITOR FROM TOBACCO AT PH 4.6

Template:ABSTRACT PUBMED 16699194

About this Structure

2CJ4 is a Single protein structure of sequence from Nicotiana tabacum. Full crystallographic information is available from OCA.

Reference

Multiple crystal forms of the cell-wall invertase inhibitor from tobacco support high conformational rigidity over a broad pH range., Hothorn M, Scheffzek K, Acta Crystallogr D Biol Crystallogr. 2006 Jun;62(Pt 6):665-70. Epub 2006, May 12. PMID:16699194

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