7Q3A | pdb_00007q3a

Crystal structure of MAB_4324 a tandem repeat GNAT from Mycobacterium abscessus

PDB DOI: https://doi.org/10.2210/pdb7Q3A/pdb

Classification: TRANSFERASE
Organism(s): Mycobacteroides abscessus ATCC 19977
Expression System: Escherichia coli BL21(DE3)
Mutation(s): No

Deposited: 2021-10-27 Released: 2022-05-04
Deposition Author(s): Blaise, M., Alsarraf, M.A.B.
Funding Organization(s): Centre National de la Recherche Scientifique (CNRS)

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.00 Å
R-Value Free:
0.226 (Depositor), 0.227 (DCC)
R-Value Work:
0.186 (Depositor), 0.187 (DCC)
R-Value Observed:
0.187 (Depositor)

wwPDB Validation 3D Report Full Report

Ligand Structure Quality Assessment

This is version 1.2 of the entry. See complete history.

Literature

Biochemical, structural, and functional studies reveal that MAB_4324c from Mycobacterium abscessus is an active tandem repeat N-acetyltransferase.

Alsarraf, H.M.A.B., Ung, K.L., Johansen, M.D., Dimon, J., Olieric, V., Kremer, L., Blaise, M.

(2022) FEBS Lett 596: 1516-1532

PubMed: 35470425 Search on PubMed
DOI: https://doi.org/10.1002/1873-3468.14360
Primary Citation Related Structures:
7Q3A

PubMed Abstract:
Mycobacterium abscessus is a pathogenic non-tuberculous mycobacterium that possesses an intrinsic drug resistance profile. Several N-acetyltransferases mediate drug resistance and/or participate in M. abscessus virulence. Mining the M. abscessus genome has revealed genes encoding additional N-acetyltransferases whose functions remain uncharacterized, among them MAB_4324c. Here, we showed that the purified MAB_4324c protein is a N-acetyltransferase able to acetylate small polyamine substrates. The crystal structure of MAB_4324c was solved at high resolution in complex with its cofactor, revealing the presence of two GCN5-related N-acetyltransferase domains and a cryptic binding site for NADPH. Genetic studies demonstrate that MAB_4324c is not essential for in vitro growth of M. abscessus; however, overexpression of the protein enhanced the uptake and survival of M. abscessus in THP-1 macrophages.

Organizational Affiliation

IRIM, CNRS, Université de Montpellier, France.

Macromolecule Content

Total Structure Weight: 83.45 kDa
Atom Count: 6,620
Modeled Residue Count: 679
Deposited Residue Count: 704
Unique protein chains: 1

Macromolecules

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| 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Putative acetyltransferase, GNAT	A, B	352	Mycobacteroides abscessus ATCC 19977	Mutation(s): 0 Gene Names: MAB_4324c
UniProt
Find proteins for B1MJN9 (Mycobacteroides abscessus (strain ATCC 19977 / DSM 44196 / CCUG 20993 / CIP 104536 / JCM 13569 / NCTC 13031 / TMC 1543 / L948)) Explore B1MJN9 Go to UniProtKB: B1MJN9
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	B1MJN9
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 7 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
ACO (Subject of Investigation/LOI) Query on ACO Download:Ideal Coordinates CCD File SDF format, chain J [auth B] SDF format, chain E [auth A] MOL2 format, chain J [auth B] MOL2 format, chain E [auth A] mmCIF format, chain J [auth B] mmCIF format, chain E [auth A]	E [auth A], J [auth B]	*ACETYL COENZYME A** C₂₃ H₃₈ N₇ O₁₇ P₃ S ZSLZBFCDCINBPY-ZSJPKINUSA-N		Interactions Focus chain E [auth A] Focus chain J [auth B] Interactions & Density Focus chain E [auth A] Focus chain J [auth B]
COA (Subject of Investigation/LOI) Query on COA Download:Ideal Coordinates CCD File SDF format, chain I [auth B] SDF format, chain D [auth A] MOL2 format, chain I [auth B] MOL2 format, chain D [auth A] mmCIF format, chain I [auth B] mmCIF format, chain D [auth A]	D [auth A], I [auth B]	COENZYME A C₂₁ H₃₆ N₇ O₁₆ P₃ S RGJOEKWQDUBAIZ-IBOSZNHHSA-N		Interactions Focus chain D [auth A] Focus chain I [auth B] Interactions & Density Focus chain D [auth A] Focus chain I [auth B]
NDP (Subject of Investigation/LOI) Query on NDP Download:Ideal Coordinates CCD File SDF format, chain C [auth A] MOL2 format, chain C [auth A] mmCIF format, chain C [auth A]	C [auth A]	NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE C₂₁ H₃₀ N₇ O₁₇ P₃ ACFIXJIJDZMPPO-NNYOXOHSSA-N		Interactions Focus chain C [auth A] Interactions & Density Focus chain C [auth A]
NAI (Subject of Investigation/LOI) Query on NAI Download:Ideal Coordinates CCD File SDF format, chain H [auth B] MOL2 format, chain H [auth B] mmCIF format, chain H [auth B]	H [auth B]	1,4-DIHYDRONICOTINAMIDE ADENINE DINUCLEOTIDE C₂₁ H₂₉ N₇ O₁₄ P₂ BOPGDPNILDQYTO-NNYOXOHSSA-N		Interactions Focus chain H [auth B] Interactions & Density Focus chain H [auth B]
EPE Query on EPE 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]	4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID C₈ H₁₈ N₂ O₄ S JKMHFZQWWAIEOD-UHFFFAOYSA-N		Interactions Focus chain L [auth B] Interactions & Density Focus chain L [auth B]
SO4 Query on SO4 Download:Ideal Coordinates CCD File SDF format, chain M [auth B] SDF format, chain G [auth A] MOL2 format, chain M [auth B] MOL2 format, chain G [auth A] mmCIF format, chain M [auth B] mmCIF format, chain G [auth A]	G [auth A], M [auth B]	SULFATE ION O₄ S QAOWNCQODCNURD-UHFFFAOYSA-L		Interactions Focus chain G [auth A] Focus chain M [auth B] Interactions & Density Focus chain G [auth A] Focus chain M [auth B]
ACT (Subject of Investigation/LOI) Query on ACT Download:Ideal Coordinates CCD File SDF format, chain K [auth B] SDF format, chain F [auth A] MOL2 format, chain K [auth B] MOL2 format, chain F [auth A] mmCIF format, chain K [auth B] mmCIF format, chain F [auth A]	F [auth A], K [auth B]	ACETATE ION C₂ H₃ O₂ QTBSBXVTEAMEQO-UHFFFAOYSA-M		Interactions Focus chain F [auth A] Focus chain K [auth B] Interactions & Density Focus chain F [auth A] Focus chain K [auth B]