Defining structural domains for some multi-domain proteins is difficult. These examples have been grouped under "Multi-domain proteins" by SCOP and described as "Folds consisting of two or more domains belonging to different classes". Representative PDB chains were selected from this "Multi-domain class". Structural domains were defined manually, with the help of automated structure and sequence search methods.
Authors: Indraneel Majumdar, Lisa N. Kinch, & Nick V. Grishin
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 |
 |
| By structure | By sequence |
| The N terminal helix is included with the green domain based on structural compactness (1amu_A). | The N terminal helix is included with the cyan domain based on sequence continuity (1amu_A). |
Composed of one a/b, two a+b domains and a 3 stranded all beta domain. Domains defined according to 1lj5_A conformation.
N-terminal alpha-helical bundle, tandem repeat of two rubredoxin-like domains.
| # | |
PDB | |
By structure | |
By sequence | |
Extension | Composite | |
|---|---|---|---|---|---|---|---|---|---|---|
| 2.1.1 | |
2fiy_A | |
19-24, 181-222 |
|
19-180 |
|
19-24 |
An a+b DNA binding domain is inserted into a beta sandwich with attached helices. The DNA binding domain is composite, and includes a C-terminal extension.
| # | |
PDB | |
By structure | |
By sequence | |
Extension | |
Composite |
|---|---|---|---|---|---|---|---|---|---|---|
| 3.1.1 | |
1ecr_A | |
5-173, 236-309 |
|
5-173, 236-309 |
|
286-309 | |
174-235, 286-309 |
Contains one all alpha domain with an inserted a+b domain.
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 4.1.1 | |
1szq_A | |
11-285, 427-483 |
|
11-285, 427-483 |
Contains one all alpha domain with an inserted a+b domain.
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 5.1.1 | |
1nh1_A | |
28-119, 220-317 |
|
28-119, 220-317 |
Contains one all alpha and one a+b domain.
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 6.1.1 | |
1r6f_A | |
28-158, 297-322 |
|
28-158, 297-322 |
Conserved structural core consists of one beta barrel with decorated helices. Two all alpha domains, one a/b domain and a non globular domain may also be present.
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 7.1.1 | |
1gwe_A | |
6-53 |
|
6-53 |
||||
| 7.1.2 | |
1m7s_A | |
27-70 |
|
27-70 |
||||
| 7.1.3 | |
1p80_A | |
27-120 |
|
27-120 |
Contains one open beta barrel and two or more all alpha domains.
| # | |
PDB | |
By structure | |
By sequence | |
Extension | Composite | |
|---|---|---|---|---|---|---|---|---|---|---|
| 8.1.1 | |
1siq_A | |
3-128 |
|
3-128 |
|
3-16 | ||
| 8.1.2 | |
1r2j_A | |
3-104 |
|
3-104 |
||||
| 8.1.3 | |
1buc_A | |
1-121 |
|
1-121 |
||||
| 8.1.4 | |
1is2_A | |
1-131 |
|
1-131 |
|
1-25 |
||
| 8.1.5 | |
1rx0_A | |
10-131 |
|
10-131 |
|
10-19 | ||
| 8.1.6 | |
3mdd_A | |
11-128 |
|
11-128 |
||||
| 8.1.7 | |
1jqi_A | |
4-123 |
|
4-123 |
||||
| 8.1.8 | |
1ivh_A | |
6-128 |
|
6-128 |
Most of the structures contain an a+b domain followed by an a/b domain. One structure contains a permuted form of the a/b domain inserted into the a+b domain.
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 9.1.1 | |
2hhm_A | |
5-146 |
|
5-146 |
||||
| 9.1.2 | |
1vdw_A | |
2-140 |
|
2-140 |
||||
| 9.1.3 | |
1nuy_A | |
1008-1200 |
|
1008-1200 |
||||
| 9.1.4 | |
1inp_A | |
1-251 |
|
1-251 |
||||
| 9.1.5 | |
1jp4_A | |
5-181 |
|
5-181 |
||||
| 9.1.6 | |
1lbv_A | |
1-140 |
|
1-140 |
||||
| 9.1.7 | |
1ka1_A | |
2-220 |
|
2-220 |
||||
| 9.1.8 | |
1ni9_A | |
-1-111, 275-325 |
|
-1-111, 275-325 |
An a/b domain inserted into a ferredoxin-like domain (sometimes this domain is composite with an N-terminal extension), followed by an EF hand (or an alpha domain). Some structures are followed by another ferredoxin-like domain, while others are followed by a duplication of a different a+b domain.
| # | |
PDB | |
By structure | |
By sequence | |
Extension | |
Composite |
|---|---|---|---|---|---|---|---|---|---|---|
| 10.4.1 | |
1tk5_A | |
1-211 |
|
1-211 |
||||
| 10.4.2 | |
1kfs_A | |
324-519 |
|
324-519 |
||||
| 10.4.3 | |
1bgx_T | |
1-180, 246-286 |
|
1-180, 246-286 |
|
248-286 | ||
| 10.4.4 | |
1msw_D | |
2-73, 248-311 |
|
2-73, 248-311 |
|
835-883 | |
542-550, 695-787, 835-883 |
| 10.4.5 | |
1u4b_A | |
297-468 |
|
297-468 |
Contains many all-beta and a+b domains.
| # | |
PDB | |
By structure | |
By sequence | |
Extension | |
Composite |
|---|---|---|---|---|---|---|---|---|---|---|
| 11.1.1 | |
1smy_C | |
1-134, 338-407 |
|
1-134, 338-407 |
|
1-18 | ||
| 11.1.2 | |
1i50_B | |
18-42, 636-748 |
|
18-210, 411-495 |
|
18-42 |
|
780-795, 854-971 |
| # | |
PDB | |
By structure | |
By sequence | |
Extension | Composite | |
|---|---|---|---|---|---|---|---|---|---|---|
| 11.2.1 | |
1smy_D | |
2-51, 86-98, 514-620 |
|
2-51, 86-98, 514-620 |
|
2-13 |
||
| 11.2.2 | |
1i50_A | |
2-58, 81-90, 236-342 |
|
2-58, 81-90, 236-342 |
|
2-21 |
N-terminal a+b domain with inserted a+b and all-alpha domains. C-terminal domain is all-alpha, swapped with neighboring chain.
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 12.1.1 | |
1k8t_A | |
291-348, 490-499, 549-625 |
|
291-348, 490-499, 549-625 |
(1) Toprim a/b, (2) 3-helix bundle, (3) domain with SSHS topology inserted into (4) "winged-helix" like. (3) and (4) are duplicated. Duplicated domains of SSHS topology form a barrel.
| # | |
PDB | |
By structure | |
By sequence | |
Extension | |
Composite |
|---|---|---|---|---|---|---|---|---|---|---|
| 13.1.1 | |
1i7d_A | |
1-156 |
|
1-156 |
|
47-76 | ||
| 13.1.2 | |
1mw9_X | |
2-159 |
|
2-159 |
|
36-84 | ||
| 13.1.3 | |
1gku_B | |
1-37 |
|
1-37 |
|
558-579 | |
1-37, 557-582 |
Toprim a/b with inserted domain of SSHS topology, "winged-helix" like, a/b and all-alpha domains. Toprim a/b domain may be absent.
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 14.1.1 | |
1bjt_A | |
419-561, 604-659 |
|
419-561, 604-659 |
||||
| 14.1.2 | |
1ab4_A | |
30-184 |
|
30-184 |
N-terminal "winged-helix" like, C-terminal a/b domain.
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 15.1.1 | |
1d3y_A | |
72-142 |
|
72-142 |
a+b and toprim a/b domains. May contain additional domains (eg zinc-binding, "winged-helix" like, RecA protein like).
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 16.1.1 | |
1nui_A | |
10-59 |
|
10-59 |
||||
| 16.1.2 | |
1dd9_A | |
115-241 |
|
115-241 |
||||
| 16.1.3 | |
1q57_G | |
64-137 |
|
64-137 |
An alpha-helical dimerisation domain with HhH motif, "treble cleft" C4 zinc-finger domain, and Toprim a/b domain.
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 17.1.1 | |
1vdd_A | |
* A:1-54 C:2-54 |
|
* A:1-54 C:2-54 |
All-beta and a+b domains linked with bent alpha-helical linker.
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 18.1.1 | |
1ois_A | |
141-158, 255-363 |
|
141-158, 255-363 |
||||
| 18.1.2 | |
1a35_A | |
215-230, 320-430 |
|
215-230, 320-430 |
||||
| 18.1.3 | |
1k4t_A | |
201-230, 320-430 |
|
201-230, 320-430 |
N-terminal a+b domain, C-terminal a/b domain forms beta-barrel.
| # | |
PDB | |
By structure | |
By sequence | |
Extension | Composite | |
|---|---|---|---|---|---|---|---|---|---|---|
| 19.1.1 | |
1daa_A | |
1-119 |
|
1-119 |
||||
| 19.1.2 | |
1iye_A | |
4-127 |
|
4-127 |
|
291-307 | ||
| 19.1.3 | |
1i2k_A | |
1-110 |
|
1-110 |
||||
| 19.1.4 | |
1ekf_A | |
1-171 |
|
1-171 |
|
352-365 |
Cascading insertions. Duplicated a+b Fe binding domains with inserted 4-helix bundle. a+b Domain with SSSH topology inserted into 4-helix bundle. Small Mg binding domain inserted into domain with SSSH topology.
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 20.1.1 | |
1ubl_L | |
19-59, 502-552 |
|
19-59, 502-552 |
||||
| 20.1.2 | |
1cc1_L | |
12-48, 448-498 |
|
12-48, 448-498 |
N-Terminal Rossmann-like a/b domain and C terminal Fe-S cluster made up of alpha helices and short loops.
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 21.1.1 | |
1ubl_S | |
1-182 |
|
1-182 |
An a/b domain with rossmann-fold topology and an all-alpha domain.
| # | |
PDB | |
By structure | |
By sequence | |
Extension | Composite | |
|---|---|---|---|---|---|---|---|---|---|---|
| 22.1.1 | |
1oj7_A | |
-2-183 |
|
-2-183 |
|
-2-6 | ||
| 22.1.2 | |
1ujn_A | |
1-162 |
|
1-162 |
||||
| 22.1.3 | |
1kq3_A | |
* A:0-158 |
|
* A:0-158 |
|
0-5 | ||
| 22.1.4 | |
1o2d_A | |
* A:8-178 B:-1-5 |
|
* A:8-178 B:-1-5 |
|
1-4 | ||
| 22.1.5 | |
1rrm_A | |
* A:9-185 B:2-8 |
|
* A:9-185 B:2-8 |
|
2-6 | ||
| 22.1.6 | |
1vlj_A | |
* A:9-184 B:-4-8 |
|
* A:9-184 B:-4-8 |
|
-2-6 | ||
| 22.1.7 | |
1sg6_A | |
4-183 |
|
4-183 |
Rossmann-like a/b domain inserted into swapped beta-beta-alpha sandwich, followed by a C-terminal 3-helix bundle. Additional a/b domains of the tetrapyrrole methylase fold may be present, which is comprised of an N-terminal Rossmann-like a/b domain and a C-terminal a+b domain.
Duplicated a/b domains (alpha-beta-alpha tri-layer) swapped with a beta-hairpin, PDZ-like beta-barrel, a+b alpha-lytic protease pro-domain like fold.
| # | |
PDB | |
By structure | |
By sequence | |
Extension | Composite | |
|---|---|---|---|---|---|---|---|---|---|---|
| 24.1.1 | |
1lci_A | |
4-18, 359-435 |
|
4-53, 213-355 |
|
4-18 | ||
| 24.1.2 | |
1mdb_A | |
1-23, 343-430 |
|
1-53, 205-342 |
|
1-23 | ||
| 24.1.3 | |
1pg4_A | |
5-73, 428-517 |
|
5-110, 279-427 |
|
5-73 | ||
| 24.1.4 | |
1v25_A | |
8-50, 199-355 |
|
8-50, 199-355 |
|
8-16 | ||
| 24.1.5 | |
1t5h_X | |
1-32, 176-321 |
|
1-32, 176-321 |
||||
| 24.1.6 | |
1amu_A | |
17-37, 342-430 |
|
17-67, 205-341 |
|
17-37 |
An a/b domain with Rossmann-like fold is inserted into a+b RubisCo small subunit-like fold.
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 25.1.1 | |
1ad2_A | |
5-68, 159-228 |
|
5-68, 159-228 |
||||
| 25.1.2 | |
1i2a_A | |
1-57, 148-212 |
|
1-57, 148-212 |
||||
| 25.1.3 | |
1mzp_A | |
1-61, 153-217 |
|
1-61, 153-217 |
N-terminal 3-helical bundle folowed by an a+b ferredoxin-like domain and two a/b dsRDB-like domains.
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 26.1.1 | |
1gqe_A | |
4-120 |
|
4-120 |
||||
| 26.1.2 | |
1rq0_A | |
1-82 |
|
1-82 |
6-stranded beta barrel (Reductase/isomerase/elongation factor common domain like fold) followed by a partially disordered a+b domain (COG3041-like topology).
| # | |
PDB | |
By structure | |
By sequence | |
Extension | Composite | |
|---|---|---|---|---|---|---|---|---|---|---|
| 27.1.1 | |
1xqb_A | |
1-151 |
|
1-151 |
|
1-151 |
3-helical bundle, a/b domain with ferredoxin-like fold inserted into a+b domain.
| # | |
PDB | |
By structure | |
By sequence | |
Extension | Composite | |
|---|---|---|---|---|---|---|---|---|---|---|
| 28.1.1 | |
1lfp_A | |
5-80 |
|
5-80 |
|
5-19 | ||
| 28.1.2 | |
1mw7_A | |
21-76 |
|
21-76 |
Helical repeats (classified as alpha-alpha superhelix), a+b domain intertwined with strand from an interacting chain with Ring/U-box fold, two "winged-helix" like domains.
| # | |
PDB | |
By structure | |
By sequence | |
Extension | |
Composite |
|---|---|---|---|---|---|---|---|---|---|---|
| 29.1.1 | |
1ldj_A | |
17-505 |
|
17-505 |
|
676-688 | |
506-603, 674-685 |
| 29.1.2 | |
1ldk_B | |
411-505 |
|
411-505 |
|
676-688 | |
506-603, 674-685 |
Two Rossmann-like a/b domains, with one a+b and one all-alpha domain (5 helices with up-and-down topology) inserted into second a/b domain.
| # | |
PDB | |
By structure | |
By sequence | |
Extension | Composite | |
|---|---|---|---|---|---|---|---|---|---|---|
| 30.1.1 | |
1epu_A | |
2-132 |
|
2-132 |
||||
| 30.1.2 | |
1mqs_A | |
* A:10-161 B:-4-21 |
|
10-161 |
|
528-553 |
Core structure consists of a 3-helical bundle with spectrin-like repeat followed by an a/b domain of Rossmann-fold topology. May contain a small N-terminal Fe binding domain, a second 3-helical bundle, or a second Rossmann-like domain. Alternatively may include a C-terminal a+b domain with split-sheet topology, followed by a duplicated alpha-beta-alpha domain with an antiparallel 312 sheet topology and a helical extension.
| # | |
PDB | |
By structure | |
By sequence | |
Extension | Composite | |
|---|---|---|---|---|---|---|---|---|---|---|
| 31.1.1 | |
1su8_A | |
4-72 |
|
4-72 |
|
4-37 |
||
| 31.1.2 | |
1oao_C | |
1-40, 79-123 |
|
1-40, 79-123 |
||||
| 31.1.3 | |
1gnl_A | |
1-26 |
|
1-26 |
Alpha-helical bundle, rubredoxin-like beta-barrel domain (without metal binding site), a+b heterodimerization domain (2-layer alpha-beta(5)-alpha, with antiparallel sheet meander). Both have an extension.
| # | |
PDB | |
By structure | |
By sequence | |
Extension | Composite | |
|---|---|---|---|---|---|---|---|---|---|---|
| 32.1.1 | |
1izn_A | |
7-61 |
|
7-61 |
|
265-281 | ||
| 32.1.2 | |
1izn_B | |
2-46 |
|
2-46 |
|
250-271 |
The conserved core contains one profilin-like a/b/a sandwich domain, and a mainly alpha domain. Additional all beta or a+b domains may be present and have been defined by SCOP.
Alpha-helical bundle with an inserted beta-barrel and an inserted a+b domain with a swapped strand from a neighboring domain.
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 34.1.1 | |
1h5w_A | |
17-61, 123-158, 202-284 |
|
17-61, 123-158, 202-284 |
Alpha-helical bundle, three inserted domains each with 5 strands and 1 helix in varying topology.
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 35.1.1 | |
1io1_A | |
56-175, 403-450 |
|
56-175, 403-450 |
Alpha-helical EF-hand domain, a+b SH2-like domain.
| # | |
PDB | |
By structure | |
By sequence | |
Extension | Composite | |
|---|---|---|---|---|---|---|---|---|---|---|
| 36.1.1 | |
1q88_A | |
148-228 |
|
148-228 |
|
332-339 |
3-helical bundle, a/b Rossmann-like alpha-beta-alpha domain.
| # | |
PDB | |
By structure | |
By sequence | |
Extension | Composite | |
|---|---|---|---|---|---|---|---|---|---|---|
| 37.1.1 | |
1xfi_A | |
6-119 |
|
6-119 |
|
6-26 |
a+b domain, a/b domain with Rossmann fold, a+b domain with glutamine synthetase/guanido kinase fold.
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 38.1.1 | |
1uwk_A | |
4-141 |
|
4-141 |
a/b domain (similar to phosphofructokinase N-terminal domain) with inserted atypical beta-sandwich domain (consisting of four swapped repeats of a 3-stranded beta meander).
| # | |
PDB | |
By structure | |
By sequence | |
Extension | Composite | |
|---|---|---|---|---|---|---|---|---|---|---|
| 39.1.1 | |
1u0t_A | |
5-138, 277-306 |
|
5-138, 277-306 |
|
287-306 | ||
| 39.1.2 | |
1suw_A | |
1-100, 227-249 |
|
1-100, 227-249 |
|
236-249 |
a/b domain in three layers (alpha-beta-alpha) with 9 stranded beta-sheet, inserted greek-key beta-barrel with 1 helix covering the barrel opening (permuted split barrel-like fold).
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 40.1.1 | |
1vky_A | |
4-63, 174-335 |
|
4-63, 174-335 |
a+b domain with SSHSS topology, a/b domain with alpha-beta bi-layer (permuted ribosomal protein S5 domain2-like fold with inserted beta-hairpin), Rossmann-like a/b domain in 3 layers (alpha-beta-alpha) with 4 parallel beta-strands.
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 41.1.1 | |
1sr8_A | |
1-40 |
|
1-40 |
a/b domain in 3 layers (alpha-beta-alpha), with inserted a/b 3 layer (alpha-beta-alpha) domain similar to P-loop containing nucleoside triphosphate hydrolase fold of the G-protein family.
| # | |
PDB | |
By structure | |
By sequence | |
Extension | Composite | |
|---|---|---|---|---|---|---|---|---|---|---|
| 42.1.1 | |
1srq_A | |
78-188, 386-413 |
|
78-188 |
|
386-413 |
a+b domain with ferredoxin-like fold with an inserted 4-helical bundle that includes a long coiled coil with another inserted a+b domain of the ferredoxin-like fold.
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 43.1.1 | |
1u7l_A | |
5-48, 325-392 |
|
5-48, 325-392 |
N terminal a/b Rossmann-like 3-layer (alpha-beta-alpha) domain, C-terminal all-beta pseudo barrel domain capped by helices. Beta-hairpin extension within C-terminal domain forms composite with beta-sheet from N-terminal domain.
| # | |
PDB | |
By structure | |
By sequence | |
Extension | |
Composite |
|---|---|---|---|---|---|---|---|---|---|---|
| 44.1.1 | |
1zjc_A | |
3-186 |
|
3-186 |
|
234-250 | |
3-186, 234-250 |
| 44.1.2 | |
2ayi_A | |
3-177 |
|
3-177 |
|
232-247 | |
3-177, 232-247 |
N-terminal helices form a parallel coiled coil with a helical bundle and C-terminal strands form a beta-sandwich (each from multiple chains).
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 45.1.1 | |
1zbp_A | |
2-85 |
|
2-85 |
Homeodomain-like 3-helical bundle, a/b domain in 2 layers (one helix may have been replaced by an additional 3-stranded sheet).
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 46.1.1 | |
2hqv_A | |
11-61 |
|
11-61 |
||||
| 46.1.2 | |
2j0r_A | |
3-42 |
|
3-42 |
Asymmetric homodimer formed by two chains. One all-alpha and one a+b domain are formed by intertwined homodimers.
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 47.1.1 | |
1knz_A | |
7-108 |
|
7-108 |
N-terminal helices form a parallel coiled coil and C terminal sheets form a beta-sandwich (from multiple chains).
| # | |
PDB | |
By structure | |
By sequence | Extension | |
Composite | |
|---|---|---|---|---|---|---|---|---|---|---|
| 48.1.1 | |
2aze_A | |
198-261, 296-346 |
|
198-261, 296-346 |
|
* A:198-261 A:296-346 B:201-256 | ||
| 48.1.2 | |
2aze_B | |
201-256 |
|
201-256 |
|
* A:198-261 A:296-346 B:201-256 |
Elongated a/b domain with distinct all-beta and all-alpha regions, a+b domain that completes an antiparallel beta-sheet of 4 strands with an inserted strand from another chain, nested insertion of an all-alpha domain with a cluster of helices and another nested insertion of a jelly-roll beta-sandwich (complexed with a+b outer capsid protein sigma 3 fold).
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 49.1.1 | |
1jmu_B | |
43-186 |
|
43-186 |
4 domains composed mostly of alpha-helices and loops, 1 a/b domain with a single beta-sheet and two helices.
| # | |
PDB | |
By structure | |
By sequence | Extension | Composite | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 50.1.1 | |
1uf2_A | |
50-286, 748-772, 965-1016 |
|
50-286, 748-772, 965-1016 |
||||
| 50.1.2 | |
2btv_A | |
57-274, 677-700, 852-901 |
|
57-274, 677-700, 852-901 |
a+b domain with curved beta-sheet and 1 helix. Large inserted all-alpha domain and small inserted all-alpha domain, both containing inserted loops.
| # | |
PDB | |
By structure | |
By sequence | |
Extension | Composite | |
|---|---|---|---|---|---|---|---|---|---|---|
| 51.1.1 | |
1m1c_A | |
1-51, 469-651 |
|
1-51, 469-651 |
|
612-651 |
Contains two large a+b domains. One small all-alpha domain and one small a+b domain are inserted into the large a+b domains.
| # | |
PDB | |
By structure | |
By sequence | |
Extension | |
Composite |
|---|---|---|---|---|---|---|---|---|---|---|
| 52.1.1 | |
1no7_A | |
484-601, 700-733, 961-1045 |
|
484-601, 700-733, 1001-1045 |
|
484-575 |
|
484-575, 961-1000 |
N-terminal A+B domain with long inserts, one of which forms a small helical domain. An all-alpha domain of three helices is connected by a linker to another mainly helical domain with a small all-alpha domain insert of three helices. An all-beta domain with a OB-like fold is interrupted by four large inserts, with two that form a composite domain of 6 helices, one that forms a composite domain with the first all-alpha domain, and one that forms an elongated a+b domain. A all-alpha domain with circularly permuted saposin-like fold (from another chain) exchanges with the rest.
| # | |
PDB | |
By structure | |
By sequence | |
Extension | |
Composite |
|---|---|---|---|---|---|---|---|---|---|---|
| 53.1.1 | |
1urj_A | |
9-198, 229-244 |
|
9-198, 229-244 |
|
380-439 |
|
573-637, 799-910 |