1
|
Xu Q, Qu J, Song B, Liu F, Chen P, Krishnan HB. Lathyrus sativus Originating from Different Geographical Regions Reveals Striking Differences in Kunitz and Bowman-Birk Inhibitor Activities. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:8119-8129. [PMID: 31265283 DOI: 10.1021/acs.jafc.9b02604] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Grass pea (Lathyrus sativus L.) is an important legume commonly grown in arid and semi-arid regions. This protein-rich legume performs well even under harsh environmental conditions and is considered to be a strategic famine food in developing countries. Unfortunately, its potential usage is greatly limited as a result of the presence of antinutritional factors, including the neuroexcitatory amino acid β-N-oxalyl-l-α,β-diaminopropionic acid (β-ODAP) and protease inhibitors. β-ODAP is responsible for a neurodegenerative syndrome that results in the paralysis of lower limbs, while protease inhibitors affect protein digestibility, resulting in reduced growth. Concerted research efforts have led to development of grass pea cultivars with reduced β-ODAP content. In contrast, very little information is available on the protease inhibitors of L. sativus. In this study, we have conducted biochemical characterization of 51 L. sativus accessions originating from different geographical regions. Sodium dodecyl sulfate polyacrylamide gel electrophoresis analyses of seed globulins and prolamins revealed striking similarity in their protein profile, although geographic-specific variations in profiles was also evident. Measurement of Bowman-Birk chymotrypsin inhibitor (BBi) and Kunitz trypsin inhibitor (KTi) activities in accessions revealed striking differences among them. Amino acid sequence alignment of grass pea BBi and KTi revealed significant homology to protease inhibitors from several legumes. Real-time polymerase chain reaction analysis demonstrated high-level expression of BBi and KTi in dry seeds and weak expression in other organs. Our study demonstrates substantial variation in BBi and KTi among grass pea accessions that could be exploited in breeding programs for the development of grass pea lines that are devoid of these antinutritional factors.
Collapse
Affiliation(s)
- Quanle Xu
- College of Life Sciences , Northwest A&F University , Yangling , Shaanxi 712100 , People's Republic of China
- Plant Genetics Research, United States Department of Agriculture's Agricultural Research Service (USDA-ARS) , University of Missouri , Columbia , Missouri 65211 , United States
| | - Jinmiao Qu
- College of Life Sciences , Northwest A&F University , Yangling , Shaanxi 712100 , People's Republic of China
| | - Bo Song
- Plant Genetics Research, United States Department of Agriculture's Agricultural Research Service (USDA-ARS) , University of Missouri , Columbia , Missouri 65211 , United States
- Key Laboratory of Soybean Biology at the Chinese Ministry of Education , Northeast Agricultural University , Harbin , Heilongjiang 150030 , People's Republic of China
| | - Fengjuan Liu
- College of Life Sciences , Northwest A&F University , Yangling , Shaanxi 712100 , People's Republic of China
| | - Peng Chen
- College of Life Sciences , Northwest A&F University , Yangling , Shaanxi 712100 , People's Republic of China
| | - Hari B Krishnan
- Plant Genetics Research, United States Department of Agriculture's Agricultural Research Service (USDA-ARS) , University of Missouri , Columbia , Missouri 65211 , United States
| |
Collapse
|
2
|
Landi N, Pacifico S, Piccolella S, Di Giuseppe AMA, Mezzacapo MC, Ragucci S, Iannuzzi F, Zarrelli A, Di Maro A. Valle Agricola lentil, an unknown lentil (Lens culinaris Medik.) seed from Southern Italy as a novel antioxidant and prebiotic source. Food Funct 2016. [PMID: 26222801 DOI: 10.1039/c5fo00604j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In order to promote 'Valle Agricola' lentil, an autochthonous lentil of the Campania Region, a thorough investigation of its biochemical and nutritional properties has been carried out. The macronutrient content (proteins, carbohydrates and lipids), free and total amino acids, and unsaturated fatty acids were determined. The antioxidant capability of raw 'Valle Agricola' lentils, as well as of boiled ones, was estimated in terms of their total phenol content (TPC), ORAC value, and free radical scavenging capacities using DPPH and ABTS assays. The data obtained evidenced that the boiling process slightly decreased Valle Agricola lentil's antioxidant power. Furthermore, when trypsin and chymotrypsin inhibitory activities were measured, a large decrease of the levels of anti-nutritional factors was estimated. In order to have a phytochemical overview of this autochthonous lentil seed, LC-ESI-MS/MS analysis was applied to raw and boiled lentil extracts. Flavonol glycosides and free flavanols, as well as typical seed prebiotic saccharides, were the most representative constituents.
Collapse
Affiliation(s)
- Nicola Landi
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, Second University of Naples, Via Vivaldi 43, 81100-Caserta, Italy.
| | | | | | | | | | | | | | | | | |
Collapse
|
3
|
Silva JA, Pompeu DG, Smolka MB, Gozzo FC, Comar M, Eberlin MN, Granjeiro PA, Marangoni S. Primary Structure of a Trypsin Inhibitor (Copaifera langsdorffii Trypsin Inhibitor-1) Obtained from C. langsdorffii Seeds. J Biomol Tech 2015. [PMID: 26207098 DOI: 10.7171/jbt.15-2603-002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
In this study, the aim was to determine the complete sequence of the Copaifera langsdorffii trypsin inhibitor (CTI)-1 using 2-dimensional (2D)-PAGE, matrix-assisted laser desorption ionization-time-of-flight (MALDI-TOF), and quadrupole time-of-flight (QTOF) spectrometry. Spots A (CTI-1) and F (CTI-2) were submitted to enzymatic digestions with trypsin, SV8, and clostripain. The accurate mass of the peptide obtained from each digest was determined by mass spectrometry (MS) using MALDI-TOF. The most abundant peptides were purified and sequenced in a liquid chromatograph connected to an electrospray ionization-QTOF MS. When the purified trypsin inhibitor was submitted to 2D electrophoresis, different spots were observed, suggesting that the protein is composed of 2 subunits with microheterogeneity. Isoelectric points of 8.0, 8.5, and 9.0 were determined for the 11 kDa subunit and of 4.7, 4.6, and 4.3 for the 9 kDa subunit. The primary structure of CTI-1, determined from the mass of the peptide of the enzymatic digestions and the sequence obtained by MS, indicated 180 shared amino acid residues and a high degree of similarity with other Kunitz (KTI)-type inhibitors. The peptide also contained an Arg residue at the reactive site position. Its 3-dimensional structure revealed that this is because the structural discrepancies do not affect the canonical conformation of the reactive loop of the peptide. Results demonstrate that a detailed investigation of the structural particularities of CTI-1 could provide a better understanding of the mechanism of action of these proteins, as well as clarify its biologic function in the seeds. CTI-1 belongs to the KTI family and is composed of 2 polypeptide chains and only 1 disulfide bridge.
Collapse
Affiliation(s)
- José A Silva
- 1 Campus Centro Oeste, Federal University of São João Del Rei, Divinópolis, Brazil; and 2 Departamento de Bioquímica and 3 Departamento de Química, Universidade Estadual de Campinas, Campinas, Brazil
| | - Dávia G Pompeu
- 1 Campus Centro Oeste, Federal University of São João Del Rei, Divinópolis, Brazil; and 2 Departamento de Bioquímica and 3 Departamento de Química, Universidade Estadual de Campinas, Campinas, Brazil
| | - Marcus B Smolka
- 1 Campus Centro Oeste, Federal University of São João Del Rei, Divinópolis, Brazil; and 2 Departamento de Bioquímica and 3 Departamento de Química, Universidade Estadual de Campinas, Campinas, Brazil
| | - Fabio C Gozzo
- 1 Campus Centro Oeste, Federal University of São João Del Rei, Divinópolis, Brazil; and 2 Departamento de Bioquímica and 3 Departamento de Química, Universidade Estadual de Campinas, Campinas, Brazil
| | - Moacyr Comar
- 1 Campus Centro Oeste, Federal University of São João Del Rei, Divinópolis, Brazil; and 2 Departamento de Bioquímica and 3 Departamento de Química, Universidade Estadual de Campinas, Campinas, Brazil
| | - Marcos N Eberlin
- 1 Campus Centro Oeste, Federal University of São João Del Rei, Divinópolis, Brazil; and 2 Departamento de Bioquímica and 3 Departamento de Química, Universidade Estadual de Campinas, Campinas, Brazil
| | - Paulo A Granjeiro
- 1 Campus Centro Oeste, Federal University of São João Del Rei, Divinópolis, Brazil; and 2 Departamento de Bioquímica and 3 Departamento de Química, Universidade Estadual de Campinas, Campinas, Brazil
| | - Sérgio Marangoni
- 1 Campus Centro Oeste, Federal University of São João Del Rei, Divinópolis, Brazil; and 2 Departamento de Bioquímica and 3 Departamento de Química, Universidade Estadual de Campinas, Campinas, Brazil
| |
Collapse
|
4
|
Altieri F, Di Stadio CS, Severino V, Sandomenico A, Minopoli G, Miselli G, Di Maro A, Ruvo M, Chambery A, Quagliariello V, Masullo M, Rippa E, Arcari P. Anti-amyloidogenic property of human gastrokine 1. Biochimie 2014; 106:91-100. [DOI: 10.1016/j.biochi.2014.08.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Accepted: 08/10/2014] [Indexed: 10/24/2022]
|