Table 1. Characteristics of proteins with multi-state kinetics

 Protein (or domain) namePDB entryfragmentScop classNumber of amino acid residuesln(kf) in waterMolecular Volume
V, ų
Molecular Surface
S, Ų
Accessible Volume
V, ų
Accessible Surface
S, Ų
Radius of gyration
Rg, Å1
Rg(V) of ideal ball, ÅRg
Rg(Vmol)
Smol
S(Vmol)
Relative CO2AbsCO3
1En-HD 1enh A:3-56 a 5410.5 7 969 3 85413 121 3 78810.42 9.601.082.013.63 736.2
2434 Cro 2cro A:-1-63 a 65 3.7 9 010 4 29114 836 4 04110.6510.001.062.111.21 728.4
3Ubiquitin 1ubq A:1-76 d 76 7.310 502 5 11517 104 4 62211.7910.521.112.215.101 147.5
4Im7 1ayi A:2-86 a 85 7.211 318 5 56318 848 5 12112.4010.791.142.310.14 862.1
5HypF-N 1gxt A:4-91 d 88 4.412 174 5 32919 122 4 92512.3011.051.112.120.891 838.3
6TI I27 1tit A:1-89 b 89 3.611 734 6 33120 254 5 52913.1610.921.202.517.801 584.1
7Barstar 1brs F:1-89 c 89 3.411 963 5 50118 877 4 67712.0110.991.092.211.841 053.7
8suc1 1-96 d 96 4.214 000 6 44022 567 5 87913.3711.581.152.313.011 249.1
9CD2.D1 1hng A:2-96 b 95 1.812 932 6 24420 910 5 50013.1411.281.162.316.871 602.8
10Barnase 1bni A:3-110 d108 2.614 442 6 12222 595 5 63013.4511.701.152.111.351 225.9
11Villin 14T3 2vik A:1-126 d126 5.016 355 7 58126 777 7 20513.9212.201.142.412.261 544.5
12p16 2a5e A:10-136 a127 3.515 975 7 57532 061 8 72617.8112.101.152.8 5.33 831.5
13ILBP 1eal A:1-127 b127 1.317 163 8 63128 127 6 80614.1812.401.142.712.401 574.9
14CheY 3chy A:2-129 c128 1.017 009 7 67126 504 6 21613.4312.361.082.4 8.711 115.0
15IFABP 1ifc A:1-131 b131 3.418 208 8 25028 406 6 57114.0012.641.102.513.521 771.0
16CRBPII 1opa A:1-133 b133 1.418 853 8 42329 463 6 86014.3012.791.122.514.021 865.2
17CRABPI 1cbi A:1-136 b136-3.218 579 8 47929 627 7 31614.5412.731.142.513.811 877.7
18apoMb 1a6n A:1-151 a151 1.120 456 9 08932 162 7 48115.1413.141.152.5 8.381 265.7
19GroEL(191-345) 1aon A:191-345 c155-1.518 394 8 77030 176 7 22614.4012.681.132.613.662 116.9
20RNase HI 2rn2 A:1-155 c155 0.121 290 9 58333 542 8 17215.5313.321.162.612.431 927.1
21DHFR 1ra9 A:1-159 c159-3.221 753 9 80534 051 8 37715.5713.411.162.614.032 231.4
22T4L 2lzm A:1-164 d164 4.122 486 9 79734 732 8 21716.5313.561.222.6 7.071 160.3
23N-terminal domain from PGK 1php A:1-175 c175 2.323 76910 58736 320 8 25515.1813.821.102.611.552 020.9
24C-terminal domain from PGK 1php A:176-394 c219-3.528 71512 85144 14410 01417.3014.711.172.8 7.961 742.5
25Tryptophan syntase α subunit 1qop A:1-267 c267-2.534 23914 12451 20210 68717.3315.601.102.8 8.352 228.2
26Tryptophan syntase β subunit 1qop B:2-391 c390-6.950 53719 08872 42713 81219.7217.771.112.9 8.343 253.4

Table 2. Characteristics of proteins with two-state kinetics

 Protein (or domain) namePDB entryfragmentScop classNumber of amino acid residuesln(kf) in waterMolecular Volume
V, ų
Molecular Surface
S, Ų
Accessible Volume
V, ų
Accessible Surface
S, Ų
Radius of gyration
Rg, Å1
Rg(V) of ideal ball, ÅRg
Rg(Vmol)
Smol
S(Vmol)
Relative CO2AbsCO
27β-hairpin 1pgb A:41-56 - 1612.0 2 172 1 305 4 385 1 714 8.36 6.221.321.625.83 413.2
28α-helix 1-21 - 2115.5 1 694 1 086 3 976 1 699 9.42 5.731.651.610.42 218.9
29Trp-cage protein 1l2y A:1-20 a 2020.5 2 577 1 468 4 984 1 828 7.25 6.591.101.618.70 374.1
30BBA5 1t8j A:1-23 d 2311.8 3 279 2 035 6 508 2 433 8.86 7.141.231.912.78 293.9
31Pin WW domain 1pin A:6-39 b 34 9.5 4 793 2 387 8 415 2 813 9.50 8.101.171.719.04 647.2
32HP36 1vii A:41-76 a 36 9.4 4 847 2 680 9 103 3 044 9.43 8.131.151.911.19 403.0
33WW prototype 1e0m A:1-37 b 37 8.9 5 036 2 641 9 115 3 119 9.66 8.241.161.917.81 658.9
34FBP28 1e0l A:1-37 b 3710.6 5 097 2 773 9 265 3 082 9.85 8.271.191.916.29 602.7
35YAP65 1jmq A:5-44 b 40 8.4 5 419 2 800 9 609 3 125 9.81 8.441.161.922.50 900.1
36psbd41 2pdd A:3-43 a 41 9.8 5 205 3 106 9 851 3 311 9.43 8.331.132.111.45 469.6
37Albumin-binding domain of protein PAB 1prb A:7-53 a 4713.8 6 012 3 22410 752 3 414 9.73 8.741.112.012.34 580.0
38c-Myb 1gv2 A:144-191 a 47 8.7 6 759 3 38811 481 3 435 9.78 9.091.072.012.30 578.1
39TRF1 1ba5 A:5-53 a 49 5.9 7 300 3 58212 468 3 65110.04 9.321.072.014.52 711.6
40Src SH3 1rlq C:9-64 b 56 4.4 7 499 3 89413 123 4 00110.47 9.411.112.120.291 136.3
41NTL9 1div A:1-56 d 56 6.6 7 434 3 71212 922 3 92511.61 9.381.242.012.66 709.0
42Protein G 3gb1 A:1-56 d 56 6.3 7 370 3 95712 853 3 77910.71 9.351.142.216.52 925.3
43Spectrin SH3 1shg A:6-62 b 57 1.1 8 050 3 86813 387 3 80110.30 9.631.072.019.101 088.9
44Fyn SH3 1avz A:85-141 b 57 4.9 8 169 4 53213 030 3 71510.24 9.681.192.019.621 118.4
45Abp1 SH3 1jo8 A:1-58 b 58 2.5 7 936 3 60212 951 3 61810.25 9.581.061.919.391 124.7
46RAP1 1fex A:1-59 a 59 8.2 7 841 4 22213 872 4 09310.56 9.551.102.213.04 769.6
47BdpA 1bdd A:1-60 a 6011.7 7 789 4 14013 797 4 39412.09 9.531.262.2 8.70 522.1
48Protein L 2ptl A:18-77 d 60 4.1 7 634 3 76813 057 3 76511.06 9.461.172.018.491 109.3
49Sso7d 1c8c A:2-64 d 63 7.0 8 520 4 34115 400 4 72111.26 9.811.132.212.67 798.1
50Ci2 2ci2 I:20-83 d 64 5.8 8 896 4 34315 150 4 32511.25 9.961.132.115.651 001.7
51CspB 1c9o A:1-66 b 66 7.2 8 902 4 36314 886 4 31311.06 9.961.102.116.901 115.4
52CspB 1g6p A:1-66 b 66 6.3 8 801 4 48515 164 4 55111.01 9.921.112.217.711 168.7
53CspB 1csp A:1-67 b 67 6.5 8 669 4 32714 682 4 29310.94 9.871.102.116.391 098.5
54EC298 1jyg A:1-69 a 69 9.1 9 585 4 72216 004 4 47811.3110.211.102.212.07 832.6
55PsaE 1psf A:1-69 b 69 3.2 8 994 4 75015 732 4 86312.32 9.991.232.317.031 174.8
56CspA 1mjc A:2-70 b 69 5.3 8 761 4 18514 616 4 12410.82 9.911.092.015.961 101.5
57ADAh2 1o6x A:9-79 d 71 6.8 9 425 4 81419 527 5 96314.7010.151.102.516.341 323.5
58α3D 2a3d A:1-73 a 7312.2 9 635 5 37717 092 5 02213.0510.231.272.5 9.54 696.2
59GW1 1m9s A:391-466 b 76 4.010 507 5 33217 549 4 91111.8310.521.122.318.271 388.2
60raf RBD 1rfa A:55-132 d 78 8.410 365 4 81916 972 4 56211.4910.481.092.116.171 261.4
61λ-repressor 1lmb 3:6-85 a 8010.410 587 5 12817 333 4 66211.8810.551.122.2 9.37 749.6
62Im9 1imq A:2-86 a 85 7.310 548 5 07217 701 5 18012.0510.541.142.212.281 043.8
63HPr 1poh A:1-85 d 85 2.711 013 5 12117 821 4 68511.7710.691.102.117.641 499.2
64ACBP 1nti A:1-86 a 86 7.011 434 5 35619 209 5 32913.1610.831.212.212.371 064.2
65PI3-SH3 1pnj A:1A-84 b 86-1.011 671 6 51120 251 5 63412.8510.901.172.616.131 387.1
66TNfn3 1ten A:803-891 b 89 1.111 931 5 56819 105 4 96413.1210.981.192.217.351 544.4
679FNIII 1fnf A:1326-1415b 90-0.911 832 5 14118 989 5 06812.9210.951.182.118.091 628.0
68CTL9 1div A:58-149 d 92 3.312 125 5 82819 895 5 48214.1811.041.282.313.811 270.7
69TWIg18’ 1wit A:1-93 b 93 0.411 478 5 49519 471 5 54413.1910.841.212.220.321 890.0
70FNfn10 1fnf A:1416-1509b 94 5.511 794 5 40219 342 5 34613.0710.941.192.116.511 551.6
71L23 1n88 A:1-96 d 96 2.012 567 6 11421 478 6 21314.3011.171.282.314.091 352.2
72U1A 1urn A:2-97 d 96 4.613 324 5 95521 469 5 59312.5911.391.102.216.901 622.8
73S6 1ris A:1-97 d 97 6.114 142 6 82222 661 5 81413.5511.621.162.418.951 837.9
74CT AcP 2acy A:1-98 d 98 0.813 437 6 07721 309 5 51112.6411.421.112.220.031 962.5
75mAcP 1aps A:1-98 d 98-1.613 206 5 86221 067 5 32512.8611.361.132.221.202 077.5
76SrcSH2 1spr A:2-104 d103 8.714 238 6 23122 455 5 77613.2011.651.132.211.651 199.6
77cyt b562 256b A:1-106 a10612.314 052 6 76422 954 5 95914.5211.601.252.4 7.49 793.5
78R16 1cun A:7-112 a110 4.814 745 7 15024 475 6 72017.2011.781.462.510.351 097.2
79R17 1cun A:113-219 a107 3.414 226 6 87523 828 6 58217.2411.641.482.410.221 093.5
80FKBP 1fkf A:1-107 d107 1.614 427 6 44322 704 5 78313.2811.701.132.317.611 884.6
81R15 1u5p A:1662-1771a11011.014 822 7 06724 777 6 93117.4011.801.472.410.311 133.9
82CheW 1k0s A:9-151 b143 7.418 785 9 20631 225 8 24314.8812.771.162.713.291 901.0
83CyPA 1lop A:1-164 b164 6.621 985 9 19333 246 7 54314.7513.461.092.415.682 570.9
84VlsE 1l8w D:29-344 a294 2.034 75315 48854 79212 11922.2415.681.373.0 8.482 508.6
  1.  
    where ri is of i-th atom Cartesian coordinates, mi is of i-th atom masses, N is the number of protein non-hydrogen atoms, and RC is the coordinate vector of the mass center of the protein calculated as follows:


  2. Definition of CO Relative contact order is the average sequence distance between all pairs of contacting residues normalized by the total sequence length:
    where N is the total number of contacts, ΔSi,j is the sequence separation, in residues, between contacting residues i and j, and L is the total number of residues in the protein. As a measure of topological complexity, CO reflects the relative importance of local and non-local contacts to a protein's native structure.

  3. Definition of Abs_CO Absolute contact order is defined as:
    Abs_CO takes into account the influence of protein size on the folding rate.

  4. Villin is three-state folder at temperature 25° C and two-state one at 37° C.