This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.

1ju3

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 09:00, 6 November 2019

BACTERIAL COCAINE ESTERASE COMPLEX WITH TRANSITION STATE ANALOG

Structural highlights

1ju3 is a 1 chain structure with sequence from Corynebacterium sp. atcc 49955. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Related:	1ju4
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[COCE_RHOSM] Hydrolyzes cocaine to benzoate and ecgonine methyl ester, endowing the bacteria with the ability to utilize cocaine as a sole source of carbon and energy for growth, as this bacterium lives in the rhizosphere of coca plants. Also efficiently hydrolyzes cocaethylene, a more potent cocaine metabolite that has been observed in patients who concurrently abuse cocaine and alcohol. Is able to prevent cocaine-induced convulsions and lethality in rat.^[1] ^[2] ^[3]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Here we report the first structure of a cocaine-degrading enzyme. The bacterial esterase, cocE, hydrolyzes pharmacologically active (-)-cocaine to a non-psychoactive metabolite with a rate faster than any other reported cocaine esterase (kcat = 7.8 s-1 and KM = 640 nM). Because of the high catalytic proficiency of cocE, it is an attractive candidate for novel protein-based therapies for cocaine overdose. The crystal structure of cocE, solved by multiple anomalous dispersion (MAD) methods, reveals that cocE is a serine esterase composed of three domains: (i) a canonical alpha/beta hydrolase fold (ii) an alpha-helical domain that caps the active site and (iii) a jelly-roll-like beta-domain that interacts extensively with the other two domains. The active site was identified within the interface of all three domains by analysis of the crystal structures of transition state analog adduct and product complexes, which were refined at 1.58 A and 1.63 A resolution, respectively. These structural studies suggest that substrate recognition arises partly from interactions between the benzoyl moiety of cocaine and a highly evolved specificity pocket.

Crystal structure of a bacterial cocaine esterase.,Larsen NA, Turner JM, Stevens J, Rosser SJ, Basran A, Lerner RA, Bruce NC, Wilson IA Nat Struct Biol. 2002 Jan;9(1):17-21. PMID:11742345^[4]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Bresler MM, Rosser SJ, Basran A, Bruce NC. Gene cloning and nucleotide sequencing and properties of a cocaine esterase from Rhodococcus sp. strain MB1. Appl Environ Microbiol. 2000 Mar;66(3):904-8. PMID:10698749
↑ Cooper ZD, Narasimhan D, Sunahara RK, Mierzejewski P, Jutkiewicz EM, Larsen NA, Wilson IA, Landry DW, Woods JH. Rapid and robust protection against cocaine-induced lethality in rats by the bacterial cocaine esterase. Mol Pharmacol. 2006 Dec;70(6):1885-91. Epub 2006 Sep 12. PMID:16968810 doi:10.1124/mol.106.025999
↑ Turner JM, Larsen NA, Basran A, Barbas CF 3rd, Bruce NC, Wilson IA, Lerner RA. Biochemical characterization and structural analysis of a highly proficient cocaine esterase. Biochemistry. 2002 Oct 15;41(41):12297-307. PMID:12369817
↑ Larsen NA, Turner JM, Stevens J, Rosser SJ, Basran A, Lerner RA, Bruce NC, Wilson IA. Crystal structure of a bacterial cocaine esterase. Nat Struct Biol. 2002 Jan;9(1):17-21. PMID:11742345 doi:10.1038/nsb742

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1ju3"

@@ Line 1: / Line 1: @@
 ==BACTERIAL COCAINE ESTERASE COMPLEX WITH TRANSITION STATE ANALOG==
-<StructureSection load='1ju3' size='340' side='right' caption='[[1ju3]], [[Resolution|resolution]] 1.58&Aring;' scene=''>
+<StructureSection load='1ju3' size='340' side='right'caption='[[1ju3]], [[Resolution|resolution]] 1.58&Aring;' scene=''>
 == Structural highlights ==
 <table><tr><td colspan='2'>[[1ju3]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Corynebacterium_sp._atcc_49955 Corynebacterium sp. atcc 49955]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1JU3 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1JU3 FirstGlance]. <br>
@@ Line 37: / Line 37: @@
 </StructureSection>
 [[Category: Corynebacterium sp. atcc 49955]]
+[[Category: Large Structures]]
 [[Category: Basran, A]]
 [[Category: Bruce, N C]]

1ju3

From Proteopedia

Revision as of 09:00, 6 November 2019

BACTERIAL COCAINE ESTERASE COMPLEX WITH TRANSITION STATE ANALOG

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox