Radical S-Adenosylmethionine Enzymes Involved in RiPP Biosynthesis

N Mahanta, GA Hudson, DA Mitchell - Biochemistry, 2017 - ACS Publications
Ribosomally synthesized and post-translationally modified peptides (RiPPs) display a
diverse range of structures and continue to expand as a natural product class. Accordingly …

Biogenesis of the peptide-derived redox cofactor pyrroloquinoline quinone

W Zhu, JP Klinman - Current opinion in chemical biology, 2020 - Elsevier
Pyrroloquinoline quinone (PQQ) is a peptide-derived redox cofactor produced by
prokaryotes that also plays beneficial roles in organisms from other kingdoms. We review …

Demonstration That the Radical S-Adenosylmethionine (SAM) Enzyme PqqE Catalyzes de Novo Carbon-Carbon Cross-linking within a Peptide Substrate PqqA in the …

I Barr, JA Latham, AT Iavarone, T Chantarojsiri… - Journal of Biological …, 2016 - ASBMB
The radical S-adenosylmethionine (SAM) protein PqqE is predicted to function in the
pyrroloquinoline quinone (PQQ) biosynthetic pathway via catalysis of carbon-carbon bond …

Pyrroloquinoline quinone chemistry, biology, and biosynthesis

GA Cordell, S Daley - Chemical Research in Toxicology, 2022 - ACS Publications
The widely distributed, essential redox factor pyrroloquinoline quinone (PQQ, methoxatin)(1)
was discovered in the mid-1960s. The breadth and depth of its biological effects are steadily …

Structural Properties and Catalytic Implications of the SPASM Domain Iron–Sulfur Clusters in Methylorubrum extorquens PqqE

W Zhu, LM Walker, L Tao, AT Iavarone… - Journal of the …, 2020 - ACS Publications
Understanding the relationship between the metallocofactor and its protein environment is
the key to uncovering the mechanism of metalloenzymes. PqqE, a radical S …

Spectroscopic and electrochemical characterization of the mycofactocin biosynthetic protein, MftC, provides insight into its redox flipping mechanism

R Ayikpoe, T Ngendahimana, M Langton… - Biochemistry, 2019 - ACS Publications
Mycofactocin is a putative redox cofactor and is classified as a ribosomally synthesized and
post-translationally modified peptide (RiPP). Some RiPP natural products, including …

Nuclear magnetic resonance structure and binding studies of PqqD, a chaperone required in the biosynthesis of the bacterial dehydrogenase cofactor …

RL Evans III, JA Latham, Y Xia, JP Klinman… - Biochemistry, 2017 - ACS Publications
Biosynthesis of the ribosomally synthesized and post-translationally modified peptide
(RiPP), pyrroloquinoline quinone (PQQ), is initiated when the precursor peptide, PqqA, is …

X-ray and EPR characterization of the auxiliary Fe–S clusters in the radical SAM enzyme PqqE

I Barr, TA Stich, AS Gizzi, TL Grove, JB Bonanno… - Biochemistry, 2018 - ACS Publications
The Radical SAM (RS) enzyme PqqE catalyzes the first step in the biosynthesis of the
bacterial cofactor pyrroloquinoline quinone, forming a new carbon–carbon bond between …

Apd1 and Aim32 are prototypes of bishistidinyl-coordinated non-Rieske [2Fe–2S] proteins

K Stegmaier, CM Blinn, DF Bechtel… - Journal of the …, 2019 - ACS Publications
Apd1, a cytosolic yeast protein, and Aim32, its counterpart in the mitochondrial matrix, have
a C-terminal thioredoxin-like ferredoxin (TLF) domain and a widely divergent N-terminal …

Testing of geroprotectors in experiments on cell cultures: pros and cons

AN Khokhlov, GV Morgunova - 2017 - books.rsc.org
According to the classic definition of aging we share, it is a combination of changes in an
organism leading to an increase in the probability of its death (rate of mortality). 1–4 It should …