Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Functional Characterization of Four Putative δ1-Pyrroline-5-Carboxylate Reductases from Bacillus subtilis

Journal Article · · Frontiers in Microbiology
In most living organisms, the amino acid proline is synthesized starting from both glutamate and ornithine. In prokaryotes, in the absence of an ornithine cyclodeaminase that has been identified to date only in a small number of soil and plant bacteria, these pathways share the last step, the reduction of delta(1)-pyrroline-5-carboxylate (P5C) catalyzed by P5C reductase (EC 1.5.1.2). In several species, multiple forms of P5C reductase have been reported, possibly reflecting the dual function of proline. Aside from its common role as a building block of proteins, proline is indeed also involved in the cellular response to osmotic and oxidative stress conditions. Genome analysis of Bacillus subtilis identifies the presence of four genes (ProH, ProI, ProG, and ComER) that, based on bioinformatic and phylogenic studies, were defined as respectively coding a putative P5C reductase. Here we describe the cloning, heterologous expression, functional analysis and small-angle X-ray scattering studies of the four affinity-purified proteins. Results showed that two of them, namely ProI and ComER, lost their catalytic efficiency or underwent subfunctionalization. In the case of ComER, this could be likely explained by the loss of the ability to form a dimer, which has been previously shown to be an essential structural feature of the catalytically active P5C reductase. The properties of the two active enzymes are consistent with a constitutive role for ProG, and suggest that ProH expression may be beneficial to satisfy an increased need for proline.
Research Organization:
Argonne National Laboratory (ANL)
Sponsoring Organization:
National Institutes of Health (NIH) - National Institute of General Medical Sciences; National Institutes of Health (NIH) - National Institute of Allergy and Infectious Diseases (NIAID); University of Ferrara
DOE Contract Number:
AC02-06CH11357
OSTI ID:
1393852
Journal Information:
Frontiers in Microbiology, Journal Name: Frontiers in Microbiology Vol. 8; ISSN 1664-302X
Publisher:
Frontiers Research Foundation
Country of Publication:
United States
Language:
English

References (44)

Uniqueness of ab initio shape determination in small-angle scattering journal April 2003
Crystal Structures of Δ1-Pyrroline-5-carboxylate Reductase from Human Pathogens Neisseria meningitides and Streptococcus pyogenes journal November 2005
ComEA, a Bacillus subtilis integral membrane protein required for genetic transformation, is needed for both DNA binding and transport journal June 1995
Pathways and regulation of bacterial arginine metabolism and perspectives for obtaining arginine overproducing strains journal April 2006
Δ 1 -pyrroline-5-carboxylate reductase from Arabidopsis thaliana : stimulation or inhibition by chloride ions and feedback regulation by proline depend on whether NADPH or NADH acts as co-substrate journal January 2014
Salt Stress-Induced Cytoplasmic Acidification and Vacuolar Alkalization in Nitellopsis obtusa Cells journal July 1989
Uptake of Amino Acids and Their Metabolic Conversion into the Compatible Solute Proline Confers Osmoprotection to Bacillus subtilis journal October 2014
Substrate channeling in proline metabolism journal January 2012
Osmotically Controlled Synthesis of the Compatible Solute Proline Is Critical for Cellular Defense of Bacillus subtilis against High Osmolarity journal July 2011
Inhibition of protein aggregation in vitro and in vivo by a natural osmoprotectant journal August 2006
DAMMIF, a program for rapid ab-initio shape determination in small-angle scattering journal January 2009
Proline: a multifunctional amino acid journal February 2010
Essential Role of Tissue-Specific Proline Synthesis and Catabolism in Growth and Redox Balance at Low Water Potential journal July 2011
Osmotically Regulated Synthesis of the Compatible Solute Ectoine in Bacillus pasteurii and Related Bacillus spp. journal February 2002
Intron-mediated alternative splicing of Arabidopsis P5CS1 and its association with natural variation in proline and climate adaptation journal May 2012
Evolution of proline biosynthesis: enzymology, bioinformatics, genetics, and transcriptional regulation: Proline biosynthesis journal November 2014
Dynamic proline metabolism: importance and regulation in water limited environments journal June 2015
The 5′ untranslated region of the At-P5R gene is involved in both transcriptional and post-transcriptional regulation: 5′ UTR-dependent regulation of At-P5R journal April 2001
Developmental Regulation of Pyrroline-5-Carboxylate Reductase Gene Expression in Arabidopsis journal August 1997
Synthesis and Evaluation of Effective Inhibitors of Plant δ 1 -Pyrroline-5-carboxylate Reductase journal July 2013
Functional characterization and expression analysis of rice δ1-pyrroline-5-carboxylate dehydrogenase provide new insight into the regulation of proline and arginine catabolism journal August 2015
Improved chemical synthesis and enzymatic assay ofΔ1-pyrroline-5-car☐ylic acid journal March 1975
Requirement of proline synthesis during Arabidopsis reproductive development journal January 2012
Proline Metabolism and Microenvironmental Stress journal July 2010
Evolution of plant δ1-pyrroline-5-carboxylate reductases from phylogenetic and structural perspectives journal August 2015
δ1-Pyrroline-5-carboxylate reductase as a new target for therapeutics: inhibition of the enzyme from Streptococcus pyogenes and effects in vivo journal July 2011
Role of proline and pyrroline-5-carboxylate metabolism in plant defense against invading pathogens journal January 2015
New LIC vectors for production of proteins from genes containing rare codons journal September 2013
Deciphering key features in protein structures with the new ENDscript server journal April 2014
New developments in the ATSAS program package for small-angle scattering data analysis journal March 2012
The Role of Δ 1 -Pyrroline-5-Carboxylate Dehydrogenase in Proline Degradation journal November 2004
Pyrroline-5-carboxylate reductase in soybean nodules: Isolation/partial primary structure/evidence for isozymes journal August 1991
Coenzyme preference of Streptococcus pyogenes δ1-pyrroline-5-carboxylate reductase: evidence supporting NADPH as the physiological electron donor journal September 2011
A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding journal May 1976
The internal pH of the forespore compartment of Bacillus megaterium decreases by about 1 pH unit during sporulation journal April 1994
Proline as a stress protectant in yeast: physiological functions, metabolic regulations, and biotechnological applications journal November 2008
The structure of Medicago truncatula δ1-pyrroline-5-carboxylate reductase provides new insights into regulation of proline biosynthesis in plants journal October 2015
Proline Mechanisms of Stress Survival journal September 2013
Functional properties and structural characterization of rice δ1-pyrroline-5-carboxylate reductase journal July 2015
Uptake and synthesis of compatible solutes as microbial stress responses to high-osmolality environments journal September 1998
Purification and Characterization of Δ1-Pyrroline-5-Carboxylate Reductase Isoenzymes, Indicating Differential Distribution in Spinach (Spinacia oleracea L.) Leaves journal July 2001
The comER Gene Plays an Important Role in Biofilm Formation and Sporulation in both Bacillus subtilis and Bacillus cereus journal June 2016
How reactive oxygen species and proline face stress together journal July 2014
Physiological implications of arginine metabolism in plants journal July 2015

Similar Records

Functional Characterization of Four Putative δ1-Pyrroline-5-Carboxylate Reductases from Bacillus subtilis
Journal Article · Wed Aug 02 00:00:00 EDT 2017 · Frontiers in Microbiology · OSTI ID:1400287

Evolution of plant δ1-pyrroline-5-carboxylate reductases from phylogenetic and structural perspectives
Journal Article · Sun Aug 02 20:00:00 EDT 2015 · Frontiers in Plant Science · OSTI ID:1224096

Functional properties and structural characterization of rice δ1-pyrroline-5-carboxylate reductase
Journal Article · Mon Jul 27 20:00:00 EDT 2015 · Frontiers in Plant Science · OSTI ID:1221834