Abstract
A.my.co.la.top'sis. N.L. fem. n.
Amycolata
genus belonging to the order
Actinomycetales
; Gr. fem. n.
opsis
aspect, appearance; N.L. fem. n.
Amycolatopsis
that which appears similar to
Amycolata
.
Aerobic to facultatively anaerobic
,
Gram‐stain‐positive
,
non‐acid‐fast
,
nonmotile
,
catalase‐positive actinomycetes that form branching substrate hyphae which fragment into squarish and rod‐shaped elements
.
When formed
,
aerial hyphae may be sterile or differentiate into chains of smooth‐walled
,
squarish to ellipsoidal spore‐like structures
. Chemo‐organotrophic to facultatively autotrophic. Grows on a broad range of organic and synthetic media. Mesophilic or thermophilic.
Whole‐organism hydrolysates are rich in
meso
‐2
,
6‐diaminopimelic acid
,
arabinose
,
and galactose
. The peptidoglycan is of the A1γ type. Muramic acid moieties are
N
‐acetylated.
The diagnostic phospholipid is phosphatidylethanolamine
(
with or without phosphatidylmethylethanolamine
)
or phosphatidylmethylethanolamine
with variable occurrence of diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol, and phosphatidylinositol mannosides; contains
complex mixtures of saturated and branched chain fatty acids
. Does not contain mycolic acids. The phylogenetic position of
Amycolatopsis
, as determined by 16S rRNA gene sequence analysis, is in the family
Pseudonocardiaceae
.
Common in arid soils but has also been isolated from activated sludge, equine placentas, and from clinical and plant material.
DNA G
+
C content
(
mol
%): 66–75 (
T
m
; HPLC).
Type species
:
Amycolatopsis orientalis
(Pittenger and Brigham 1956) Lechevalier, Prauser, Labeda and Ruan 1986, 35
VP
.
Taxonomic and Nomenclature Notes
According to the List of Prokaryotic names with Standing in Nomenclature (LPSN), the taxonomic status of the genus
Amycolatopsis
is: correct name (last update, February 2025)
*
.
LPSN classification:
Bacteria
/
Bacillati
/
Actinomycetota
/
Actinomycetes
/
Pseudonocardiales
/
Pseudonocardiaceae
/
Amycolatopsis
The genus
Amycolatopsis
can also be recovered in the Genome Taxonomy Database (GTDB) as
g__Amycolatopsis
(version v220)
**
.
GTDB classification:
d__Bacteria
/
p__Actinomycetota
/
c__Actinomycetes
/
o__Mycobacteriales
/
f__Pseudonocardiaceae
/
g__Amycolatopsis
*
Meier‐Kolthoff
et al. (
2022
).
Nucleic Acids Res
,
50
,
D801
–
D807
; DOI:
10.1093/nar/gkab902
**
Parks
et al. (
2022
).
Nucleic Acids Res
,
50
,
D785
–
D794
; DOI:
10.1093/nar/gkab776