TABLE 1.

Bridge interactions between 30S and 50S subunits in the 70S ribosome

Bridge	30S	50S	IA [Å2]
B1a	S13: 78–79, 82–83, 93	886–888	382.0
B1b	S13: 3, 6–7, 9, 68–69, 71	L5: 113–116, 140–141	722.7
B2a	1406–1409, 1495–1496	1914–1915, 1917–1919	535.8
B2b	783–785, 791, 1516–1517	1835–1837, 1919, 1921, 1931	621.0
B2c	770–771, 773, 899, 900	1793, 1831–1832	322.1
B3	1418–1419, 1421–1422, 1483–1486	1947–1950, 1959–1961	846.6
		L14: 46–49
B4	762–763	713–717	575.5
	S15: 53, 56–57, 60,89; S17: 93, 104
B5	1427–1430, 1472, 1474–1477	1686, 1688–1690, 1700–1704, 1988	1068.8
		L14: 17; L19: 108
B6a	1431–1432, 1464, 1467	L19: 108–110	314.9
B6b	1446	L19: 91	87.8
B7a	699, 702	1846, 1848, 1895–1897	435.8
B8	345–346	L19: 42, 44	270.8
	L14: 119
Total			6138.8