Table 1 Most prevalently detected antimicrobial resistance gene families in nucleocytoplasmic large DNA virus (NCLDV) and phage genomes

From: Giant viruses as reservoirs of antibiotic resistance genes

AMR gene familya

ARG type

Mechanism

No. detected in NCLDVs

No. detected in phages

trimethoprim resistant dihydrofolate reductase dfr

trimethoprim

antibiotic target replacement

303

325

F-subtype ATP-binding cassette protein

multiple antibiotics

antibiotic target protection

219

46

antibiotic-resistant isoleucyl-tRNA synthetase (ileS)

mupirocin

antibiotic target alteration

52

0

streptogramin vat acetyltransferase

MLS

antibiotic inactivation

27

5

glycopeptide resistance gene cluster;vanH

glycopeptide

antibiotic target alteration

24

6

glycopeptide resistance gene cluster;vanT

glycopeptide

antibiotic target alteration

20

0

tetracycline-resistant ribosomal protection protein

tetracycline

antibiotic target protection

16

5

pmr phosphoethanolamine transferase

polymyxin

antibiotic target alteration

12

9

glycopeptide resistance gene cluster;vanS

glycopeptide

antibiotic target alteration

11

2

  1. aAMR gene families were adopted from CARD database. AMR gene families with more than 10 ORFs detected in NCLDVs were shown.