2hpt
From Proteopedia
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| - | [[Image:2hpt.gif|left|200px]] | + | [[Image:2hpt.gif|left|200px]] |
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| - | '''Crystal Structure of E. coli PepN (Aminopeptidase N)in complex with Bestatin''' | + | {{Structure |
| + | |PDB= 2hpt |SIZE=350|CAPTION= <scene name='initialview01'>2hpt</scene>, resolution 2.30Å | ||
| + | |SITE= | ||
| + | |LIGAND= <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene>, <scene name='pdbligand=BES:2-(3-AMINO-2-HYDROXY-4-PHENYL-BUTYRYLAMINO)-4-METHYL-PENTANOIC+ACID'>BES</scene> and <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene> | ||
| + | |ACTIVITY= [http://en.wikipedia.org/wiki/Membrane_alanyl_aminopeptidase Membrane alanyl aminopeptidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.11.2 3.4.11.2] | ||
| + | |GENE= pepN ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 Escherichia coli]) | ||
| + | }} | ||
| + | |||
| + | '''Crystal Structure of E. coli PepN (Aminopeptidase N)in complex with Bestatin''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 2HPT is a [ | + | 2HPT is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2HPT OCA]. |
==Reference== | ==Reference== | ||
| - | Structure of aminopeptidase N from Escherichia coli suggests a compartmentalized, gated active site., Addlagatta A, Gay L, Matthews BW, Proc Natl Acad Sci U S A. 2006 Sep 5;103(36):13339-44. Epub 2006 Aug 28. PMID:[http:// | + | Structure of aminopeptidase N from Escherichia coli suggests a compartmentalized, gated active site., Addlagatta A, Gay L, Matthews BW, Proc Natl Acad Sci U S A. 2006 Sep 5;103(36):13339-44. Epub 2006 Aug 28. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16938892 16938892] |
[[Category: Escherichia coli]] | [[Category: Escherichia coli]] | ||
[[Category: Membrane alanyl aminopeptidase]] | [[Category: Membrane alanyl aminopeptidase]] | ||
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[[Category: compartmentalized active site]] | [[Category: compartmentalized active site]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 17:19:58 2008'' |
Revision as of 15:19, 20 March 2008
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| , resolution 2.30Å | |||||||
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| Ligands: | , and | ||||||
| Gene: | pepN (Escherichia coli) | ||||||
| Activity: | Membrane alanyl aminopeptidase, with EC number 3.4.11.2 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal Structure of E. coli PepN (Aminopeptidase N)in complex with Bestatin
Overview
Aminopeptidase N from Escherichia coli is a major metalloprotease that participates in the controlled hydrolysis of peptides in the proteolytic pathway. Determination of the 870-aa structure reveals that it has four domains similar to the tricorn-interacting factor F3. The thermolysin-like active site is enclosed within a large cavity with a volume of 2,200 A(3), which is inaccessible to substrates except for a small opening of approximately 8-10 A. The substrate-based inhibitor bestatin binds to the protein with minimal changes, suggesting that this is the active form of the enzyme. The previously described structure of F3 had three distinct conformations that were described as "closed," "intermediate," and "open." The structure of aminopeptidase N from E. coli, however, is substantially more closed than any of these. Taken together, the results suggest that these proteases, which are involved in intracellular peptide degradation, prevent inadvertent hydrolysis of inappropriate substrates by enclosing the active site within a large cavity. There is also some evidence that the open form of the enzyme, which admits substrates, remains inactive until it adopts the closed form.
About this Structure
2HPT is a Single protein structure of sequence from Escherichia coli. Full crystallographic information is available from OCA.
Reference
Structure of aminopeptidase N from Escherichia coli suggests a compartmentalized, gated active site., Addlagatta A, Gay L, Matthews BW, Proc Natl Acad Sci U S A. 2006 Sep 5;103(36):13339-44. Epub 2006 Aug 28. PMID:16938892
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