Low level built-in function to transpose expression (not array) [closed]

I have an expression like this

F[G[1, b], G[3, y], G[4, y], G[5, u]]


that I would like to Transpose to obtain

G[F[1, 3, 4, 5], F[b, y, y, u]]


Since Transpose doesn't act on expressions (with heads different from List), what is the built-in function that makes this transformation?

I can do something like

G@@F@@@Transpose[F[G[1, b], G[3, y], G[4, y], G[5, u]] /. F|G->List]


but I'd rather use something lower level than that.

closed as off-topic by QuantumDot, m_goldberg, MarcoB, Henrik Schumacher, halirutan♦Jul 10 '18 at 23:08

This question appears to be off-topic. The users who voted to close gave this specific reason:

• "This question arises due to a simple mistake such as a trivial syntax error, incorrect capitalization, spelling mistake, or other typographical error and is unlikely to help any future visitors, or else it is easily found in the documentation." – QuantumDot, m_goldberg, MarcoB, Henrik Schumacher, halirutan
If this question can be reworded to fit the rules in the help center, please edit the question.

• Thread[F[G[1, b], G[3, y], G[4, y], G[5, u]], G]. – march Jul 9 '18 at 16:49

Thread does that:
Thread[F[G[1, b], G[3, y], G[4, y], G[5, u]], G]