1JOF

Neurospora crassa 3-carboxy-cis,cis-mucoante lactonizing enzyme

PDB DOI: https://doi.org/10.2210/pdb1JOF/pdb

Classification: ISOMERASE
Organism(s): Neurospora crassa
Expression System: Escherichia coli
Mutation(s): Yes

Deposited: 2001-07-28 Released: 2002-04-12
Deposition Author(s): Kajander, T., Merckel, M.C., Thompson, A., Deacon, A.M., Mazur, P., Kozarich, J.W., Goldman, A.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.50 Å
R-Value Free: 0.251
R-Value Work: 0.212

wwPDB Validation 3D Report Full Report

Ligand Structure Quality Assessment

This is version 1.4 of the entry. See complete history.

Literature

The structure of Neurospora crassa 3-carboxy-cis,cis-muconate lactonizing enzyme, a beta propeller cycloisomerase.

Kajander, T., Merckel, M.C., Thompson, A., Deacon, A.M., Mazur, P., Kozarich, J.W., Goldman, A.

(2002) Structure 10: 483-492

PubMed: 11937053 Search on PubMed
DOI: https://doi.org/10.1016/s0969-2126(02)00744-x
Primary Citation of Related Structures:
1JOF

PubMed Abstract:
Muconate lactonizing enzymes (MLEs) convert cis,cis-muconates to muconolactones in microbes as part of the beta-ketoadipate pathway; some also dehalogenate muconate derivatives of xenobiotic haloaromatics. There are three different MLE classes unrelated by evolution. We present the X-ray structure of a eukaryotic MLE, Neurospora crassa 3-carboxy-cis,cis-muconate lactonizing enzyme (NcCMLE) at 2.5 A resolution, with a seven-bladed beta propeller fold. It is related neither to bacterial MLEs nor to other beta propeller enzymes, but is structurally similar to the G protein beta subunit. It reveals a novel metal-independent cycloisomerase motif unlike the bacterial metal cofactor MLEs. Together, the bacterial MLEs and NcCMLE structures comprise a striking structural example of functional convergence in enzymes for 1,2-addition-elimination of carboxylic acids. NcCMLE and bacterial MLEs may enhance the reaction rate differently: the former by electrophilic catalysis and the latter by electrostatic stabilization of the enolate.

Organizational Affiliation

Institute of Biotechnology, Research Program in Structural Biology and Biophysics, University of Helsinki, FIN-00014 Helsinki, Finland.

Macromolecule Content

Total Structure Weight: 336.35 kDa
Atom Count: 23,837
Modelled Residue Count: 2,920
Deposited Residue Count: 2,920
Unique protein chains: 1

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CARBOXY-CIS,CIS-MUCONATE CYCLASE	A, B, C, D, E A, B, C, D, E, F, G, H	365	Neurospora crassa	Mutation(s): 10 EC: 5.5.1.5
UniProt
Find proteins for P38677 (Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987)) Explore P38677 Go to UniProtKB: P38677
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	P38677
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
PIN Query on PIN Download Ideal Coordinates CCD File SDF format, chain FA [auth H] SDF format, chain M [auth B] MOL2 format, chain FA [auth H] MOL2 format, chain M [auth B] mmCIF format, chain FA [auth H] mmCIF format, chain M [auth B]	FA [auth H], M [auth B]	PIPERAZINE-N,N'-BIS(2-ETHANESULFONIC ACID) C₈ H₁₈ N₂ O₆ S₂ IHPYMWDTONKSCO-UHFFFAOYSA-N		Interactions Focus chain FA [auth H] Focus chain M [auth B] Interactions & Density Focus chain FA [auth H] Focus chain M [auth B]
SO4 Query on SO4 Download Ideal Coordinates CCD File SDF format, chain BA [auth G] SDF format, chain EA [auth H] SDF format, chain I [auth A] SDF format, chain L [auth B] SDF format, chain P [auth C] SDF format, chain S [auth D] SDF format, chain V [auth E] SDF format, chain Y [auth F] MOL2 format, chain BA [auth G] MOL2 format, chain EA [auth H] MOL2 format, chain I [auth A] MOL2 format, chain L [auth B] MOL2 format, chain P [auth C] MOL2 format, chain S [auth D] MOL2 format, chain V [auth E] MOL2 format, chain Y [auth F] mmCIF format, chain BA [auth G] mmCIF format, chain EA [auth H] mmCIF format, chain I [auth A] mmCIF format, chain L [auth B] mmCIF format, chain P [auth C] mmCIF format, chain S [auth D] mmCIF format, chain V [auth E] mmCIF format, chain Y [auth F]	BA [auth G] EA [auth H] I [auth A] L [auth B] P [auth C] BA [auth G], EA [auth H], I [auth A], L [auth B], P [auth C], S [auth D], V [auth E], Y [auth F]	SULFATE ION O₄ S QAOWNCQODCNURD-UHFFFAOYSA-L		Interactions Focus chain BA [auth G] Focus chain EA [auth H] Focus chain I [auth A] Focus chain L [auth B] Focus chain P [auth C] Focus chain S [auth D] Focus chain V [auth E] Focus chain Y [auth F] Interactions & Density Focus chain BA [auth G] Focus chain EA [auth H] Focus chain I [auth A] Focus chain L [auth B] Focus chain P [auth C] Focus chain S [auth D] Focus chain V [auth E] Focus chain Y [auth F]
BME Query on BME Download Ideal Coordinates CCD File SDF format, chain AA [auth F] SDF format, chain CA [auth G] SDF format, chain DA [auth G] SDF format, chain GA [auth H] SDF format, chain HA [auth H] SDF format, chain J [auth A] SDF format, chain K [auth A] SDF format, chain N [auth B] SDF format, chain O [auth B] SDF format, chain Q [auth C] SDF format, chain R [auth C] SDF format, chain T [auth D] SDF format, chain U [auth D] SDF format, chain W [auth E] SDF format, chain X [auth E] SDF format, chain Z [auth F] MOL2 format, chain AA [auth F] MOL2 format, chain CA [auth G] MOL2 format, chain DA [auth G] MOL2 format, chain GA [auth H] MOL2 format, chain HA [auth H] MOL2 format, chain J [auth A] MOL2 format, chain K [auth A] MOL2 format, chain N [auth B] MOL2 format, chain O [auth B] MOL2 format, chain Q [auth C] MOL2 format, chain R [auth C] MOL2 format, chain T [auth D] MOL2 format, chain U [auth D] MOL2 format, chain W [auth E] MOL2 format, chain X [auth E] MOL2 format, chain Z [auth F] mmCIF format, chain AA [auth F] mmCIF format, chain CA [auth G] mmCIF format, chain DA [auth G] mmCIF format, chain GA [auth H] mmCIF format, chain HA [auth H] mmCIF format, chain J [auth A] mmCIF format, chain K [auth A] mmCIF format, chain N [auth B] mmCIF format, chain O [auth B] mmCIF format, chain Q [auth C] mmCIF format, chain R [auth C] mmCIF format, chain T [auth D] mmCIF format, chain U [auth D] mmCIF format, chain W [auth E] mmCIF format, chain X [auth E] mmCIF format, chain Z [auth F]	AA [auth F] CA [auth G] DA [auth G] GA [auth H] HA [auth H] AA [auth F], CA [auth G], DA [auth G], GA [auth H], HA [auth H], J [auth A], K [auth A], N [auth B], O [auth B], Q [auth C], R [auth C], T [auth D], U [auth D], W [auth E], X [auth E], Z [auth F]	BETA-MERCAPTOETHANOL C₂ H₆ O S DGVVWUTYPXICAM-UHFFFAOYSA-N		Interactions Focus chain AA [auth F] Focus chain CA [auth G] Focus chain DA [auth G] Focus chain GA [auth H] Focus chain HA [auth H] Focus chain J [auth A] Focus chain K [auth A] Focus chain N [auth B] Focus chain O [auth B] Focus chain Q [auth C] Focus chain R [auth C] Focus chain T [auth D] Focus chain U [auth D] Focus chain W [auth E] Focus chain X [auth E] Focus chain Z [auth F] Interactions & Density Focus chain AA [auth F] Focus chain CA [auth G] Focus chain DA [auth G] Focus chain GA [auth H] Focus chain HA [auth H] Focus chain J [auth A] Focus chain K [auth A] Focus chain N [auth B] Focus chain O [auth B] Focus chain Q [auth C] Focus chain R [auth C] Focus chain T [auth D] Focus chain U [auth D] Focus chain W [auth E] Focus chain X [auth E] Focus chain Z [auth F]