Science Quiz / Cell Signaling

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Can you name the the HYTQ concepts?

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QuestionAnswer
PKA catalytic subunits phosphorylate what?
peptide or protein hormones bind which type of receptor? (cell surface or intracellular)
this protein activates G proteins by exchanging GDP for GTP
steroid hormones bind which type of receptor? (cell surface or intracellular)
hydrophobic molecules generally bind to _____ receptors.
Cytosolic domain of this receptor either has intrinsic enzymatic activity or activates an associated enzyme. There is no enzyme activity without ligand.
CRE stands for what?
enzyme that phosphorylates protein target
this type of receptor protein is a channel for ion transport
term for molecules that mimics signal of ligand (e.g., drug)
which subunit of the G-protein binds GTP and GDP?
release mechanism for steroid hormones
true or false: intracellular receptors regulate transcription.
cAMP binds the ______ subunit of protein kinase A (PKA)
this term describes steps that “transduce” signal binding to receptor into cellular response(s)
release mechanism for protein or peptide hormones
release mechanism for catecholamine hormones
QuestionAnswer
this protein inactivates G protein
catecholamine hormones bind which type of receptor? (cell surface or intracellular)
these proteins have multiple protein binding domains and can form multi-protein complexes for signal transduction
these receptors transduce signals across the plasma membrane via changes in receptor protein conformation that lead to changes in receptor protein activity and/or receptor protein
Phosphotyrosines recruit which adaptor protein
these receptors bind to signaling molecules that diffuse into the cell
these enzymes remove phosphate groups added by kinases
G proteins are active when what molecule is bound?
cAMP is synthesized by what?
release mechanism for thyroid hormones
Ligand binding activates a G-protein (GTP-binding protein). Activated G-protein stimulates (or inhibits) an effector
Active RTK phosphorylates ______ residues
thyroid hormones bind which type of receptor? (cell surface or intracellular)
term for signal that stably occupies a receptor
these receptors bind to signaling molecules that do not diffuse into cell
hydrophilic molecules generally bind to _____ receptors.

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