7RC4

Aeronamide N-methyltransferase, AerE (D141A)

PDB DOI: https://doi.org/10.2210/pdb7RC4/pdb

Classification: TRANSFERASE
Organism(s): Microvirgula aerodenitrificans DSM 15089
Expression System: Escherichia coli BL21(DE3)
Mutation(s): Yes

Deposited: 2021-07-07 Released: 2022-03-30
Deposition Author(s): Cogan, D.P., Reyes, R., Nair, S.K.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.66 Å
R-Value Free: 0.188
R-Value Work: 0.170
R-Value Observed: 0.171

wwPDB Validation 3D Report Full Report

Ligand Structure Quality Assessment

This is version 1.1 of the entry. See complete history.

Literature

Structure and mechanism for iterative amide N -methylation in the biosynthesis of channel-forming peptide cytotoxins.

Cogan, D.P., Bhushan, A., Reyes, R., Zhu, L., Piel, J., Nair, S.K.

(2022) Proc Natl Acad Sci U S A 119: e2116578119-e2116578119

PubMed: 35316135 Search on PubMedSearch on PubMed Central
DOI: https://doi.org/10.1073/pnas.2116578119
Primary Citation of Related Structures:
7RC2, 7RC3, 7RC4, 7RC5, 7RC6

PubMed Abstract:
SignificanceThe channel-forming proteusins are bacterial helical peptides that allow permeation of positively charged ions to influence membrane potential and cellular physiology. We biochemically characterize the effect of two critical posttranslational modifications on the secondary structure of the peptide substrate. We determine how a methyl group can be added to the side chains of D-Asn residues in a peptide substrate and show how flanking residues influence selectivity. These studies should foster the development of small-molecule peptide ion channels as therapeutics.

Organizational Affiliation

Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801.

Macromolecule Content

Total Structure Weight: 42.91 kDa
Atom Count: 3,361
Modelled Residue Count: 375
Deposited Residue Count: 384
Unique protein chains: 1

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Methyltransferase family protein	A	384	Microvirgula aerodenitrificans DSM 15089	Mutation(s): 1
UniProt
Find proteins for A0A2S0PEL5 (Microvirgula aerodenitrificans) Explore A0A2S0PEL5 Go to UniProtKB: A0A2S0PEL5
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	A0A2S0PEL5
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 5 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
SAH (Subject of Investigation/LOI) Query on SAH Download Ideal Coordinates CCD File SDF format, chain B [auth A] MOL2 format, chain B [auth A]	B [auth A]	S-ADENOSYL-L-HOMOCYSTEINE C₁₄ H₂₀ N₆ O₅ S ZJUKTBDSGOFHSH-WFMPWKQPSA-N		Interactions Focus chain B [auth A] Interactions & Density Focus chain B [auth A]
P6G Query on P6G Download Ideal Coordinates CCD File SDF format, chain G [auth A] MOL2 format, chain G [auth A]	G [auth A]	HEXAETHYLENE GLYCOL C₁₂ H₂₆ O₇ IIRDTKBZINWQAW-UHFFFAOYSA-N		Interactions Focus chain G [auth A] Interactions & Density Focus chain G [auth A]
PG4 Query on PG4 Download Ideal Coordinates CCD File SDF format, chain F [auth A] MOL2 format, chain F [auth A]	F [auth A]	TETRAETHYLENE GLYCOL C₈ H₁₈ O₅ UWHCKJMYHZGTIT-UHFFFAOYSA-N		Interactions Focus chain F [auth A] Interactions & Density Focus chain F [auth A]
CA Query on CA Download Ideal Coordinates CCD File SDF format, chain E [auth A] MOL2 format, chain E [auth A]	E [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N		Interactions Focus chain E [auth A] Interactions & Density Focus chain E [auth A]
NA (Subject of Investigation/LOI) Query on NA Download Ideal Coordinates CCD File SDF format, chain C [auth A] SDF format, chain D [auth A] MOL2 format, chain C [auth A] MOL2 format, chain D [auth A]	C [auth A], D [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N		Interactions Focus chain C [auth A] Focus chain D [auth A] Interactions & Density Focus chain C [auth A] Focus chain D [auth A]