2AFV

The Crystal Structure of Putative Precorrin Isomerase CbiC in Cobalamin Biosynthesis

PDB DOI: https://doi.org/10.2210/pdb2AFV/pdb

Classification: ISOMERASE
Organism(s): Leptospira interrogans
Expression System: Escherichia coli
Mutation(s): No

Deposited: 2005-07-26 Released: 2006-04-04
Deposition Author(s): Xue, Y., Wei, Z.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 3.00 Å
R-Value Free: 0.251
R-Value Work: 0.204
R-Value Observed: 0.204

wwPDB Validation 3D Report Full Report

This is version 1.3 of the entry. See complete history.

Literature

The crystal structure of putative precorrin isomerase CbiC in cobalamin biosynthesis

Xue, Y., Wei, Z., Li, X., Gong, W.

(2006) J Struct Biol 153: 307-311

PubMed: 16427313 Search on PubMed
DOI: https://doi.org/10.1016/j.jsb.2005.11.011
Primary Citation of Related Structures:
2AFR, 2AFV

PubMed Abstract:
The leptospira cbiC encodes the enzyme catalyzing the methyl rearrangement reaction of the cobalamin biosynthesis pathway. The protein has been cloned and overexpressed as a His-tagged recombinant protein in Escherichia coli. The crystal structures have been solved in two crystal forms (P4(2)2(1)2 and P3(1)21) diffracting to 3.0 and 2.3A resolution, respectively. The structures are similar to the precorrin-8x methyl mutase (CobH), an enzyme of the aerobic pathway to vitamin B12.

Organizational Affiliation

National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, PR China.

Macromolecule Content

Total Structure Weight: 52.67 kDa
Atom Count: 3,396
Modelled Residue Count: 434
Deposited Residue Count: 462
Unique protein chains: 1

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
cobalamin biosynthesis precorrin isomerase	A, B	231	Leptospira interrogans	Mutation(s): 0 EC: 5.4.1.2 (PDB Primary Data), 5.4.99.60 (UniProt)
UniProt
Find proteins for Q8EXP7 (Leptospira interrogans serogroup Icterohaemorrhagiae serovar Lai (strain 56601)) Explore Q8EXP7 Go to UniProtKB: Q8EXP7
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	Q8EXP7
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
P33 Query on P33 Download Ideal Coordinates CCD File SDF format, chain L [auth B] MOL2 format, chain L [auth B] mmCIF format, chain L [auth B]	L [auth B]	3,6,9,12,15,18-HEXAOXAICOSANE-1,20-DIOL C₁₄ H₃₀ O₈ XPJRQAIZZQMSCM-UHFFFAOYSA-N		Interactions Focus chain L [auth B]
P6G Query on P6G Download Ideal Coordinates CCD File SDF format, chain G [auth A] MOL2 format, chain G [auth A] mmCIF format, chain G [auth A]	G [auth A]	HEXAETHYLENE GLYCOL C₁₂ H₂₆ O₇ IIRDTKBZINWQAW-UHFFFAOYSA-N		Interactions Focus chain G [auth A]
CL Query on CL Download Ideal Coordinates CCD File SDF format, chain C [auth A] SDF format, chain D [auth A] SDF format, chain E [auth A] SDF format, chain F [auth A] SDF format, chain H [auth B] SDF format, chain I [auth B] SDF format, chain J [auth B] SDF format, chain K [auth B] MOL2 format, chain C [auth A] MOL2 format, chain D [auth A] MOL2 format, chain E [auth A] MOL2 format, chain F [auth A] MOL2 format, chain H [auth B] MOL2 format, chain I [auth B] MOL2 format, chain J [auth B] MOL2 format, chain K [auth B] mmCIF format, chain C [auth A] mmCIF format, chain D [auth A] mmCIF format, chain E [auth A] mmCIF format, chain F [auth A] mmCIF format, chain H [auth B] mmCIF format, chain I [auth B] mmCIF format, chain J [auth B] mmCIF format, chain K [auth B]	C [auth A] D [auth A] E [auth A] F [auth A] H [auth B] C [auth A], D [auth A], E [auth A], F [auth A], H [auth B], I [auth B], J [auth B], K [auth B]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M		Interactions Focus chain C [auth A] Focus chain D [auth A] Focus chain E [auth A] Focus chain F [auth A] Focus chain H [auth B] Focus chain I [auth B] Focus chain J [auth B] Focus chain K [auth B]

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 3.00 Å
R-Value Free: 0.251
R-Value Work: 0.204
R-Value Observed: 0.204
Space Group: P 4₂ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 113.078	α = 90
b = 113.078	β = 90
c = 114.502	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling
MOLREP	phasing

Structure Validation

View Full Validation Report

Entry History

Deposition Data

Released Date: 2006-04-04

Deposition Author(s):

Xue, Y.

Wei, Z.

Revision History (Full details and data files)

Version 1.0: 2006-04-04
Type: Initial release
Version 1.1: 2008-04-30
Changes: Version format compliance
Version 1.2: 2011-07-13
Changes: Version format compliance
Version 1.3: 2024-03-13
Changes: Data collection, Database references, Derived calculations, Structure summary