GPCR (proteínas G) Flashcards

1
Q

Estimula procesos metabólicos y aumenta frecuencia cardíaca

A

Proteína Gs (estimulante)

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2
Q
  • Regula contracción del músculo liso
  • Secreción hormonal
A

Proteína Gq (excitadora)

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3
Q
  • Reduce frecuencia cardíaca
  • Inhibe liberación de neurotransmisores
A

Proteína Gi (inhibidora)

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4
Q

Inhibe Adenilil ciclasa

A

Proteína Gi

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5
Q

Activa fosfolipasa C

A

Proteina Gq

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6
Q

Activa Adenilil ciclasa

A

Proteína Gs

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7
Q

PTH

A

hormona paratiroidea

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8
Q

LH

A

hormona leutinizante

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9
Q

TSH

A

Hormona estimulante de tiroides

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10
Q

GRH

A

Hormona liberadora de growth hormone

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11
Q

TRH

A

hormona liberadora de tirotropina

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12
Q

ACTH

A

hormona adrenocorticotropica

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13
Q

MSH

A

Hormona estimulante de melanocitos

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14
Q

Hormonas que interactuan con GPCR

A

PTH, LH, TSH, GRH, TRH, ACTH, MSH, β-adrenergico, Glucagon, Dopamina, α2-adrenérgico, somastotatina

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15
Q

paso 1 de unión a proteína G

A

Proteína G inactiva esta unida a GDP

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16
Q

paso 2 de unión a proteína G

A

Se une a ligando y causa cambio conformacional del receptor.
Proteína G se une a receptor y cambia GDP por GTP.

17
Q

paso 3 de unión a proteína G

A

subunidad α se disocia del comple (γ y β) y se va con otras proteínas que continuan con la cascada de señalización.

18
Q

aumenta AMPc

A

Proteína Gs

19
Q

utiliza proteína cinasa A para fosforilar y activar enzimas en citosol

A

Proteína Gs

20
Q

produce IP3 y DAG

A

Proteína Gq

21
Q

utiliza proteína cinasa C para fosforilar y activar enzimas en citosol

A

Proteína Gq