List the chain sequences attached to a variant.
A mAb variant returns two chains (heavy + light); a nanobody
returns one (vhh); constructs return as many as were assembled
(e.g., scFv + Fc).
Cost: read — rate bucket only.
Bearer authentication header of the form Bearer <token>, where <token> is your auth token.
Successful Response
Opaque chain identifier (UUID).
"99998888-7777-6666-5555-444433332222"
Chain role. One of: heavy, light, vhh, scfv, fc_only, targeting_domain.
"heavy"
Variable-region amino-acid sequence for this chain, if applicable.
"QVQLVESGGGLVQPGGSLRLSCAASGFTFS..."