8BCM_1|Chains A[auth D], C[auth E], D[auth K], E[auth L], F[auth M], G[auth N], H[auth O], I[auth P]|Ribulose 1,5-bisphosphate carboxylase small subunit|Synechococcus elongatus PCC 7942 = FACHB-805 (1140) label=1