HEADER PROTON TRANSPORT 31-DEC-69 6RE8 TITLE Cryo-EM structure of Polytomella F-ATP synthase, Rotary substate 2D, TITLE 2 composite map COMPND MOL_ID: 18; COMPND 2 MOLECULE: ATP synthase subunit beta; COMPND 3 CHAIN: X, Y, Z; COMPND 4 EC: 7.1.2.2; EXPDTA ELECTRON MICROSCOPY DBREF 6RE8 X 1 574 UNP A0ZW41 A0ZW41_9CHL 1 574 SEQRES 1 X 72 ALA GLY TYR VAL SER GLN VAL ILE GLY PRO VAL VAL ASP SEQRES 2 X 72 VAL ARG PHE ASP GLY GLU LEU PRO SER ILE LEU SER SER SEQRES 3 X 72 LEU GLU VAL GLU GLY HIS SER VAL ARG LEU VAL LEU GLU SEQRES 4 X 72 VAL ALA GLN HIS MET GLY ASP ASN THR VAL ARG CYS ILE SEQRES 5 X 72 ALA MET ASP SER THR ASP GLY LEU VAL ARG GLY GLN LYS SEQRES 6 X 72 VAL VAL ASP THR GLY SER PRO