2000
DOI: 10.1016/s0309-1740(00)00049-8
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Purification and characterization of a soluble methionyl aminopeptidase from porcine skeletal muscle

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Cited by 30 publications
(25 citation statements)
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“…Methionyl aminopeptidase (MAP; EC 3.4.11.18), whose activity is enhanced in the presence of low amounts of NaCl, can also generate free amino acids in cured pork meat products. This enzyme has broad substrate specificity, exhibiting maximal activity in the hydrolysis of N-terminal Met (100%) and Lys (81%) (Flores, Marina, & Toldrá, 2000). Table 2 shows the contribution of TnT fragments to the increases of free threonine (peptides 1, 5, 7, 11, 15, and 21) and lysine (peptides 3, 9, and 17).…”
Section: Contributions Of Exopeptidases: Dipeptidyl Peptidases Aminomentioning
confidence: 99%
“…Methionyl aminopeptidase (MAP; EC 3.4.11.18), whose activity is enhanced in the presence of low amounts of NaCl, can also generate free amino acids in cured pork meat products. This enzyme has broad substrate specificity, exhibiting maximal activity in the hydrolysis of N-terminal Met (100%) and Lys (81%) (Flores, Marina, & Toldrá, 2000). Table 2 shows the contribution of TnT fragments to the increases of free threonine (peptides 1, 5, 7, 11, 15, and 21) and lysine (peptides 3, 9, and 17).…”
Section: Contributions Of Exopeptidases: Dipeptidyl Peptidases Aminomentioning
confidence: 99%
“…Se han purificado y caracterizado 5 aminopeptidasas diferentes en el músculo porcino: la alanil-(AAP) (3.4.11.14), arginil-(ARG) (3.4.11.6), leucil-(LAP) (3.4.11.1), piroglutamil-(PGAP) (3.4.19.3), y metionil-(MAP) (3.4.11.18) aminopeptidasa (Flores et al, 1997a;Flores et al, 2000). Todas ellas son activas a pH neutro (AAP y RAP) o básico (LAP o PGAP) y son capaces de hidrolizar aminoácidos del extremo N-terminal de péptidos y proteínas, incrementando el pool de aminoácidos libres especialmente durante las fases de secado y maduración de los productos cárnicos (Flores et al, 1997a, Toldrá y Flores, 1998.…”
Section: Aminopeptidasasunclassified
“…Se activa notablemente en presencia de ión Cl -y se inhibe por bestatina (Flores et al, 1993). La metionilaminopeptidasa es activada por Ca 2+ , y tiene un amplio espectro de actividad con cierta preferencia por hidrolizar metionina, alanina, lisina y leucina (Flores et al, 2000). Mientras que, la leucil-y piroglutamil-aminopeptidasas están presentes en el músculo porcino en niveles bajos, y su pH óptimo de actuación está muy lejos del que nos podemos encontrar en jamón (Toldrá, 2002).…”
Section: Aminopeptidasasunclassified
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