Glucogenogénesis y Glucogenólisis Flashcards

1
Q

El glucógeno es un __________ de reserva

A

polisacárido

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2
Q

Permite (2)

A

almacenamiento compacto
rápida liberación de glucosa

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3
Q

Características del glucógeno (3)

A

Movilizable
Mantener niveles de glucosa
Obtener glucosa rápido

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4
Q

Lugar de almacenamiento del glucógeno (2)

A

Hígado (10%)
Músculo esquelético (1-2%)

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5
Q

Dónde se encuentra la mayor cantidad de glucógeno:

A

Músculo (mayor cantidad en el cuerpo)

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6
Q

Tipos de regulaciones que tiene la vía: (2)

A

Alostérica = enzimas
Hormonal = INSULINA

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7
Q

Enzimas clave de la glucogenogénesis (3)

A

UDP (uridina difosfato) glucosa pirofosforilasa
Glucógeno sintasa
Enzima ramificante

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8
Q

Primer que se glucosila para comenzar la cadena de glucógeno

A

Glucogenina (7 residuos de glucosa)

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9
Q

Qué necesita la glucogenina para catalizarse

A

Residuo de tirosina

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10
Q

Tipo de enlace que tiene la cadena principal

A

1-4 alfa (C1 y C4)

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11
Q

Dónde ocurre la adición de residuos de glucosa

A

Extremo EXTERNO (no reductor)

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12
Q

Enlaces de la enzima ramificante

A

1-6 alfa = puntode ramificación

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13
Q

Cantidad de glucosas que mueve la enzima ramificadora

A

al menos 6 residuos

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14
Q

Características del glucógeno: (2)

A

Soluble en agua
Velocidad de síntesis y degradación ALTA

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15
Q
A
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