5F8C

Rv2258c-unbound


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.83 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.193 

wwPDB Validation   3D Report Full Report


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Literature

Crystal structure of Rv2258c from Mycobacterium tuberculosis H37Rv, an S-adenosyl-l-methionine-dependent methyltransferase

Im, H.N.Kim, H.S.An, D.R.Jang, J.Y.Kim, J.Yoon, H.J.Yang, J.K.Suh, S.W.

(2016) J Struct Biol 193: 172-180

  • DOI: 10.1016/j.jsb.2016.01.002
  • Primary Citation of Related Structures:  
    5F8C, 5F8F, 5F8E

  • PubMed Abstract: 
  • The Mycobacterium tuberculosis Rv2258c protein is an S-adenosyl-L-methionine (SAM)-dependent methyltransferase (MTase). Here, we have determined its crystal structure in three forms: a ligand-unbound form, a binary complex with sinefungin (SFG), and a binary complex with S-adenosyl-L-homocysteine (SAH) ...

    The Mycobacterium tuberculosis Rv2258c protein is an S-adenosyl-L-methionine (SAM)-dependent methyltransferase (MTase). Here, we have determined its crystal structure in three forms: a ligand-unbound form, a binary complex with sinefungin (SFG), and a binary complex with S-adenosyl-L-homocysteine (SAH). The monomer structure of Rv2258c consists of two domains which are linked by a long α-helix. The N-terminal domain is essential for dimerization and the C-terminal domain has the Class I MTase fold. Rv2258c forms a homodimer in the crystal, with the N-terminal domains facing each other. It also exists as a homodimer in solution. A DALI structural similarity search with Rv2258c reveals that the overall structure of Rv2258c is very similar to small-molecule SAM-dependent MTases. Rv2258c interacts with the bound SFG (or SAH) in an extended conformation maintained by a network of hydrogen bonds and stacking interactions. Rv2258c has a relatively large hydrophobic cavity for binding of the methyl-accepting substrate, suggesting that bulky nonpolar molecules with aromatic rings might be targeted for methylation by Rv2258c in M. tuberculosis. However, the ligand-binding specificity and the biological role of Rv2258c remain to be elucidated due to high variability of the amino acid residues defining the substrate-binding site.


    Organizational Affiliation

    Department of Biophysics and Chemical Biology, College of Natural Sciences, Seoul National University, Seoul 08826, Republic of Korea; Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 08826, Republic of Korea. Electronic address: sewonsuh@snu.ac.kr.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
MethyltransferaseA, B, C377Mycobacterium tuberculosis H37RvMutation(s): 0 
Gene Names: Rv2258cLH57_12310
EC: 2.1.1
UniProt
Find proteins for O53532 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Explore O53532 
Go to UniProtKB:  O53532
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CSD
Query on CSD
A, B, CL-PEPTIDE LINKINGC3 H7 N O4 SCYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.83 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.193 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 109.254α = 90
b = 140.635β = 98.56
c = 97.239γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data processing
PHENIXphasing

Structure Validation

View Full Validation Report




Entry History & Funding Information

Deposition Data

  • Deposited Date: 2015-12-09 
  • Released Date: 2016-06-29 
  • Deposition Author(s): Im, H.N., Suh, S.W.

Funding OrganizationLocationGrant Number
Korea Ministry of Science, ICT and Future PlanningKorea, Republic Of2013R1A2A1A05067303
Korea Ministry of Health, Welfare & Family AffairsKorea, Republic OfA092006

Revision History  (Full details and data files)

  • Version 1.0: 2016-06-29
    Type: Initial release