Table I

Proteins identified in plasma membranes of Synechocystis

No., spot number in Fig. 1; predict., predicted; exper., experimental; theor., theoretical.

No.ORFGene productMatched peptides/totalMature protein
pI predict./exper.Mass theor./exper.
1Sll1021Hypothetical7/115.1/5.2–5.474.4/80
2Slr1841Putative porin4/74.4/4.565.0/70
3Sll041660-kDa chaperonin 2 GroEL-24/64.9/5.157.8/66
4Sll1053Membrane fusion protein MtrC6/74.9/5.156.3/64
5Sll1699Periplasmic oligopeptide-binding protein7/115.2/5.3–5.664.5/63
6Slr1624Hypothetical8/144.2/4.346.2/60
7Slr1270TolC10/144.7/4.7,4.853.6/60
8Sll1326ATP synthase α chain5/75.0/5.1,5.254.0/60
9Sll0141Membrane fusion protein9/145.0/5.247.9/60
10Slr1506Hypothetical8/105.1/5.261.1/60
11Sll0180Membrane fusion protein10/125.3/5.3–5.652.0/59
12Slr1908Putative porin8/104.9/4.9–5.261.6/55
13Slr1220Hypothetical5/64.2/4.436.0/54
14Slr0872Hypothetical3/45.3/5.341.5/54
15Sll1099EF-Tu11/155.2/5.543.7/54
16Sll0606Hypothetical6/75.8/5.950.7/50
17Slr0447Putative periplasmic binding protein4/74.7/4.845.5/46
18Slr0040Bicarbonate transporter substrate-binding protein CmpA6/95.1/4.9–5.246.8/46
19Slr1751Carboxyl-terminal protease CtpC16/174.9/5.244.4/46
20Sll0752Hypothetical7/94.8/4.8–5.031.4/45
21Slr1897SrrA protein7/75.0/5.0,5.143.7/42
22Slr1274Membrane protein PilM10/114.5/4.740.9/42
23Slr1275PilN3/44.5/4.530.0/41
24Slr0151Hypothetical6/75.0/5.134.9/41
25Slr1276PilO6/74.2/4.330.1/39
26Slr1295Periplasmic iron-binding protein FutA16/74.8/4.836.3/39
27Sll0034Hypothetical4/65.8/6.0,6.328.6/39
28Sll0617Vipp1 Im309/95.0/5.0–5.128.9/38
29Slr0513Periplasmic iron-binding protein FutA28/95.2/5.2,5.334.9/38
30Sll1363Ketol-acid reductoisomerase IlvC3/45.0/5.140.0/37
31Slr1319Iron(III) dicitrate periplasmic binding protein FecB4/54.8/4.933.0/36
32Slr1106Prohibitin6/95.2/5.230.6/35
33Slr1768Hypothetical7/95.6/5.0,5.231.8/34
34Slr0875Large conductance mechanosensitive channel MscL3/54.7/4.615.8/33
34Slr08754/54.7/4.615.8/17
35Slr1377Leader peptidase type I LepB6/85.4/5.2,5.324.7/33
36Sll1041ATP-binding protein of ABC transporter6/85.4/5.228.7/30
37Sll0427PsbO3/44.7/4.826.9/30
38Slr0431Hypothetical7/84.8/4.822.5/30
39Slr1258Hypothetical4/74.8/5.2,5.423.7/29
40Slr0677ExbB protein, TolQ3/55.1/5.222.1/28
41Slr1128Stomatin-like protein4/65.7/5.433.8/28
42Sll0947Light-repressed protein, LrtA6/66.1/6.621.9/27
43Sll1835Hypothetical3/54.7/4.825.0/27
44Slr1730Potassium-transporting ATPase C chain, KdpC4/64.5/4.817.8/27
45Slr1881High affinity branched-chain amino acid transport ATP-binding protein BraG (LivF)6/75.7/5.825.7/27
46Sll0749Hypothetical4/44.5/4.617.9/25
47Sll1324ATP synthase subunit b AtpF5/85.1/5.219.8/19
48Sll0813Cytochrome c oxidase subunit II CoxB4/76.0/6.2,6.629.5/19
49Slr0695Hypothetical lipoprotein5/105.5/5.416.2/18
50Sll1578Phycocyanin α chain4/55.3/5.217.6/18
51Slr0737Photosystem I subunit II PsaD4/78.9/7.015.7/19
52Sll1323ATP synthase subunit b′ AtpG5/85.2/5.116.2/16
53Sll0819Photosystem I subunit III PsaF5/86.1/6.615.7/16
54Slr0013Hypothetical8/96.5/5.613.7/15
55Sll0565Hypothetical3/54.6/4.915.2/15
56Sll1405ExbD protein, TolR3/49.0/5.615.6/14
57Slr1513Hypothetical4/66.6/5.7–7.012.0/14
58Sll1638Hypothetical lipoprotein4/55.6/5.1,5.414.2/14
59Ssl0707Nitrogen regulatory protein P-II GlnB6/76.6/5.7,6.512.4/12
60Sll1028Carbon dioxide-concentrating mechanism protein CcmK4/75.3/5.611.1/12
61Sll1118Hypothetical6/65.6/5.911.5/12
62Sll1029Carbon dioxide-concentrating mechanism protein CcmK5/66.1/6.512.1/10
63Ssl0563PsaC2/35.7/6.08.8/9