Back to structures

IMGVR_UViG_3300025545_000018-3300025545-Ga0209142_100053251

Arc-Vir

IMGVR_UViG_3300025545_000018-3300025545-Ga0209142_100053251

Quality

87.1 mean pLDDT

Cluster

Singleton — not in a non-trivial cluster

3D Structure

Domains

high = three domain segmentations agree, medium = two domain segmentations agree. Numbered high-first then medium, N→C within each tier.

D1 high residues 20-91
PDB
Domain cluster: representative
CATH (53)
Domain IDClass IDClassificationTM-scoreBitsE-valueQ covT cov
1pd3A00 1.10.287.230 Mainly Alpha › Orthogonal Bundle › Helix Hairpins › 0.89 61.0 6.89e-01 72.2% 94.4%
1t7sA00 1.20.58.120 Mainly Alpha › Up-down Bundle › Methane Monooxygenase Hydroxylase; Chain G, domain 1 › BAG domain 0.86 61.0 4.87e-01 73.6% 44.2%
3tklB01 1.20.58.90 Mainly Alpha › Up-down Bundle › Methane Monooxygenase Hydroxylase; Chain G, domain 1 › 0.83 56.0 5.95e-01 73.6% 80.6%
3qo8A01 1.10.287.40 Mainly Alpha › Orthogonal Bundle › Helix Hairpins › Serine-tRNA synthetase, tRNA binding domain 0.82 58.0 5.03e-01 73.6% 57.5%
3nvoB02 1.20.58.340 Mainly Alpha › Up-down Bundle › Methane Monooxygenase Hydroxylase; Chain G, domain 1 › Magnesium transport protein CorA, transmembrane region 0.82 60.0 5.01e-01 76.4% 61.2%
4egwA02 1.20.58.340 Mainly Alpha › Up-down Bundle › Methane Monooxygenase Hydroxylase; Chain G, domain 1 › Magnesium transport protein CorA, transmembrane region 0.81 59.0 4.94e-01 76.4% 63.9%
1lq7A00 1.20.1270.70 Mainly Alpha › Up-down Bundle › Substrate Binding Domain Of Dnak; Chain:A; Domain 2 › Designed single chain three-helix bundle 0.81 64.0 6.62e-01 100.0% 91.0%
2zueA03 1.10.730.10 Mainly Alpha › Orthogonal Bundle › Isoleucyl-tRNA Synthetase; Domain 1 › Isoleucyl-tRNA Synthetase; Domain 1 0.80 54.0 4.48e-01 73.6% 42.0%
4nqfA00 1.20.120.330 Mainly Alpha › Up-down Bundle › Four Helix Bundle (Hemerythrin (Met), subunit A) › Nucleotidyltransferases domain 2 0.79 57.0 4.48e-01 76.4% 93.1%
2lm9A00 1.20.58.970 Mainly Alpha › Up-down Bundle › Methane Monooxygenase Hydroxylase; Chain G, domain 1 › 0.79 56.0 5.09e-01 75.0% 58.3%
2y39A00 1.20.120.1490 Mainly Alpha › Up-down Bundle › Four Helix Bundle (Hemerythrin (Met), subunit A) › 0.78 57.0 4.95e-01 77.8% 51.8%
8hk0B03 1.20.140.10 Mainly Alpha › Up-down Bundle › Butyryl-CoA Dehydrogenase, subunit A; domain 3 › Butyryl-CoA Dehydrogenase, subunit A, domain 3 0.77 69.0 5.55e-01 100.0% 60.9%
1z0jB00 4.10.860.20 Few Secondary Structures › Irregular › DNA Excision Repair, Uvrb; Chain A › Rabenosyn, Rab binding domain 0.77 52.0 6.02e-01 75.0% 100.0%
2fonA04 1.20.140.10 Mainly Alpha › Up-down Bundle › Butyryl-CoA Dehydrogenase, subunit A; domain 3 › Butyryl-CoA Dehydrogenase, subunit A, domain 3 0.77 68.0 5.57e-01 98.6% 73.6%
2cazD00 6.10.140.820 Special › Helix non-globular › Helix Hairpins › 0.76 52.0 5.65e-01 72.2% 98.3%
1y6xA00 1.10.287.1080 Mainly Alpha › Orthogonal Bundle › Helix Hairpins › MazG-like 0.76 52.0 4.87e-01 72.2% 58.6%
7t7kA01 1.20.930.60 Mainly Alpha › Up-down Bundle › Transcription Elongation Factor S-II; Chain A › 0.75 67.0 5.69e-01 100.0% 95.8%
2d9dA00 1.20.58.120 Mainly Alpha › Up-down Bundle › Methane Monooxygenase Hydroxylase; Chain G, domain 1 › BAG domain 0.75 49.0 4.58e-01 73.6% 53.9%
1j1jA02 1.20.58.200 Mainly Alpha › Up-down Bundle › Methane Monooxygenase Hydroxylase; Chain G, domain 1 › Translin; domain 2 0.74 49.0 4.67e-01 73.6% 57.6%
1y4cA03 1.20.120.660 Mainly Alpha › Up-down Bundle › Four Helix Bundle (Hemerythrin (Met), subunit A) › IL-4 antagonist (De novo design) like domain 0.74 67.0 5.75e-01 100.0% 65.5%
4n06A02 1.20.120.920 Mainly Alpha › Up-down Bundle › Four Helix Bundle (Hemerythrin (Met), subunit A) › CRISPR-associated endonuclease Cas1, C-terminal domain 0.74 66.0 4.45e-01 100.0% 29.2%
4h33A00 1.10.287.70 Mainly Alpha › Orthogonal Bundle › Helix Hairpins › 0.74 53.0 4.90e-01 75.0% 91.2%
6xpdA01 1.20.1510.10 Mainly Alpha › Up-down Bundle › Alpha-lytic protease prodomain-like › Cation efflux protein transmembrane domain 0.73 64.0 4.68e-01 98.6% 73.3%
1ni3A03 1.10.150.300 Mainly Alpha › Orthogonal Bundle › DNA polymerase; domain 1 › Obg-related GTPase Ych/YyaF, coiled-coil domain 0.72 61.0 5.62e-01 91.7% 75.8%
2l35A00 1.10.287.770 Mainly Alpha › Orthogonal Bundle › Helix Hairpins › YojJ-like 0.72 51.0 5.36e-01 73.6% 95.2%
1sj8A02 1.20.120.230 Mainly Alpha › Up-down Bundle › Four Helix Bundle (Hemerythrin (Met), subunit A) › Alpha-catenin/vinculin-like 0.71 60.0 5.17e-01 98.6% 91.0%
2zxqA06 1.20.1270.70 Mainly Alpha › Up-down Bundle › Substrate Binding Domain Of Dnak; Chain:A; Domain 2 › Designed single chain three-helix bundle 0.71 53.0 5.46e-01 98.6% 87.9%
2ex3B02 1.20.1270.230 Mainly Alpha › Up-down Bundle › Substrate Binding Domain Of Dnak; Chain:A; Domain 2 › DNA terminal protein Gp3, priming domain 0.70 47.0 4.61e-01 100.0% 63.0%
3lmfA00 1.20.1270.360 Mainly Alpha › Up-down Bundle › Substrate Binding Domain Of Dnak; Chain:A; Domain 2 › 0.69 59.0 5.25e-01 100.0% 79.8%
3pt1A02 1.20.930.60 Mainly Alpha › Up-down Bundle › Transcription Elongation Factor S-II; Chain A › 0.68 60.0 5.10e-01 100.0% 95.0%
4jgiA01 1.10.1240.10 Mainly Alpha › Orthogonal Bundle › Methyltransferase, Methionine Synthase (B12-binding Domains); Chain A, domain 1 › Methionine synthase domain 0.68 45.0 4.39e-01 75.0% 61.3%
2rp4A00 6.10.280.60 Special › Helix non-globular › Methane Monooxygenase Hydroxylase; Chain G, domain 1 › Transcription factor p53, C-terminal domain 0.68 45.0 4.54e-01 72.2% 69.0%
3i2fA02 1.10.3020.10 Mainly Alpha › Orthogonal Bundle › alpha-amino acid ester hydrolase ( Helical cap domain) › alpha-amino acid ester hydrolase ( Helical cap domain) 0.67 51.0 4.65e-01 97.2% 62.1%
3toyA01 3.30.390.10 Alpha Beta › 2-Layer Sandwich › Enolase-like; domain 1 › Enolase-like, N-terminal domain 0.67 45.0 3.76e-01 70.8% 93.7%
3m7gA02 1.10.8.1010 Mainly Alpha › Orthogonal Bundle › Helicase, Ruva Protein; domain 3 › 0.67 57.0 5.30e-01 100.0% 80.0%
1b04A03 1.10.287.610 Mainly Alpha › Orthogonal Bundle › Helix Hairpins › Helix hairpin bin 0.66 44.0 4.69e-01 70.8% 80.6%
2nr5A00 1.10.287.750 Mainly Alpha › Orthogonal Bundle › Helix Hairpins › SO2669-like 0.66 45.0 4.89e-01 80.6% 89.7%
4dwlA00 1.20.1440.60 Mainly Alpha › Up-down Bundle › de novo design (two linked rop proteins) › 23S rRNA-intervening sequence 0.65 53.0 4.73e-01 94.4% 81.5%
1v9vA01 1.20.1480.20 Mainly Alpha › Up-down Bundle › hypothetical protein mp506/mpn330, domain 1 › MAST3 pre-PK domain-like 0.65 56.0 5.11e-01 97.2% 94.7%
1rcwB00 1.20.910.10 Mainly Alpha › Up-down Bundle › Heme Oxygenase; Chain A › Heme oxygenase-like 0.64 56.0 4.06e-01 100.0% 67.8%
2b0hA01 1.20.120.230 Mainly Alpha › Up-down Bundle › Four Helix Bundle (Hemerythrin (Met), subunit A) › Alpha-catenin/vinculin-like 0.64 54.0 4.63e-01 100.0% 68.0%
2oocB00 1.20.120.160 Mainly Alpha › Up-down Bundle › Four Helix Bundle (Hemerythrin (Met), subunit A) › HPT domain 0.64 48.0 4.22e-01 83.3% 55.2%
2xvtC00 1.10.150.510 Mainly Alpha › Orthogonal Bundle › DNA polymerase; domain 1 › Receptor activity modifying family 0.64 44.0 4.30e-01 73.6% 65.8%
3cr3A00 1.25.40.340 Mainly Alpha › Alpha Horseshoe › Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat › DhaL domain 0.63 55.0 4.13e-01 100.0% 93.2%
2m6uA00 1.20.81.20 Mainly Alpha › Up-down Bundle › Receptor-associated Protein › 0.63 54.0 5.22e-01 100.0% 93.9%
4aurA01 3.40.50.300 Alpha Beta › 3-Layer(aba) Sandwich › Rossmann fold › P-loop containing nucleotide triphosphate hydrolases 0.61 53.0 3.66e-01 100.0% 99.3%
3mvpA02 1.10.357.10 Mainly Alpha › Orthogonal Bundle › Tetracycline Repressor; domain 2 › Tetracycline Repressor, domain 2 0.60 49.0 3.93e-01 91.7% 69.8%
1tu9A00 1.10.490.10 Mainly Alpha › Orthogonal Bundle › Globin-like › Globins 0.55 37.0 3.17e-01 72.2% 41.2%
2w02B01 1.10.150.640 Mainly Alpha › Orthogonal Bundle › DNA polymerase; domain 1 › AcsD, thumb domain, helical bundle 0.55 39.0 3.94e-01 75.0% 91.9%
2looA02 1.10.10.1740 Mainly Alpha › Orthogonal Bundle › Arc Repressor Mutant, subunit A › Transmembrane protein 14-like 0.53 38.0 3.82e-01 76.4% 76.0%
4jneA03 3.90.640.10 Alpha Beta › Alpha-Beta Complex › Actin; Chain A, domain 4 › ATPase, substrate binding domain, subdomain 4 0.53 40.0 3.77e-01 81.9% 65.9%
4h8aB01 1.10.1530.10 Mainly Alpha › Orthogonal Bundle › Hypothetical Oxidoreductase Yiak; Chain: A, domain 1 › Malate/L-lactate/L-sulpholactate dehydrogenase, four-helix barrel 0.51 37.0 3.97e-01 93.1% 91.7%
1c20A00 1.10.150.60 Mainly Alpha › Orthogonal Bundle › DNA polymerase; domain 1 › ARID DNA-binding domain 0.50 35.0 3.02e-01 100.0% 43.0%
ECOD (53)
UIDF-IDClassificationTM-scoreBitsE-valueQ covT cov
3386700 304.58.1.0 a+b two layers › Alpha-beta plaits › FepE-like › FepE-like 0.89 63.0 4.03e-01 73.6% 18.3%
4010267 192.8.1.131 alpha bundles › Long alpha-hairpin › Eukaryotic DNA topoisomerase I, dispensable insert domain › Eukaryotic DNA topoisomerase I, dispensable insert domain › GNVR 0.88 62.0 5.01e-01 73.6% 41.5%
3940022 5057.1.1.0 alpha bundles › Neurotransmitter-gated ion-channel transmembrane pore › Neurotransmitter-gated ion-channel transmembrane pore › Neurotransmitter-gated ion-channel transmembrane pore 0.85 62.0 5.29e-01 76.4% 53.6%
3227967 616.1.1.2 alpha arrays › S15/NS1 RNA-binding domain › S15/NS1 RNA-binding domain › S15/NS1 RNA-binding domain › WHEP-TRS 0.84 57.0 6.19e-01 70.8% 85.0%
4683248 5086.1.1.66 alpha bundles › helical hairpin of HlyD-like secretion proteins › helical hairpin of HlyD-like secretion proteins › helical hairpin of HlyD-like secretion proteins › GNVR 0.83 59.0 4.63e-01 73.6% 38.6%
4982662 632.1.1.0 alpha bundles › immunoglobulin/albumin-binding domain-like › Families 57/38 glycoside transferase middle domain › Families 57/38 glycoside transferase middle domain 0.83 76.0 6.02e-01 100.0% 54.3%
4358659 633.6.1.2 alpha bundles › Bromodomain-like › Acyl-CoA dehydrogenase C-terminal domain-like › Acyl-CoA dehydrogenase C-terminal domain-like › ACOX 0.79 72.0 5.14e-01 100.0% 42.5%
3817615 604.12.1.0 alpha bundles › Spectrin repeat-like › MIT domain › MIT domain 0.78 55.0 4.81e-01 73.6% 71.4%
4953007 632.11.1.1 alpha bundles › immunoglobulin/albumin-binding domain-like › AF1782-like › AF1782-like › DUF357 0.78 64.0 6.40e-01 100.0% 88.0%
4946174 101.1.2.0 alpha arrays › HTH › HTH › winged helix domain 0.76 61.0 5.67e-01 100.0% 68.9%
4998043 633.29.1.13 alpha bundles › Bromodomain-like › Putative uncharacterized protein PAV1-137 › Putative uncharacterized protein PAV1-137 › DUF2096_N 0.76 67.0 6.08e-01 100.0% 72.0%
4971099 4044.1.1.0 alpha bundles › Helical bundle domain in prismane-like proteins › Helical bundle domain in prismane-like proteins › Helical bundle domain in prismane-like proteins 0.75 61.0 5.70e-01 100.0% 71.1%
4983661 632.11.1.0 alpha bundles › immunoglobulin/albumin-binding domain-like › AF1782-like › AF1782-like 0.75 67.0 5.89e-01 98.6% 67.6%
3854699 3860.1.1.285 alpha bundles › Myosin VI lever arm › Myosin VI lever arm › Myosin VI lever arm › Casc1_N 0.75 55.0 4.85e-01 77.8% 56.2%
3942503 632.1.1.0 alpha bundles › immunoglobulin/albumin-binding domain-like › Families 57/38 glycoside transferase middle domain › Families 57/38 glycoside transferase middle domain 0.75 66.0 6.02e-01 100.0% 77.9%
3923707 632.11.1.0 alpha bundles › immunoglobulin/albumin-binding domain-like › AF1782-like › AF1782-like 0.74 66.0 6.03e-01 100.0% 77.9%
3436259 632.15.1.5 alpha bundles › immunoglobulin/albumin-binding domain-like › Staphylococcal complement inhibitor (SCIN) › Staphylococcal complement inhibitor (SCIN) › Rx_N 0.74 65.0 5.54e-01 100.0% 66.7%
4236831 604.6.1.50 alpha bundles › Spectrin repeat-like › GAT-like domain › GAT-like domain › DUF2524 0.74 51.0 4.98e-01 72.2% 72.5%
4103507 632.22.1.1 alpha bundles › immunoglobulin/albumin-binding domain-like › Cell division protein EzrA repeats › Cell division protein EzrA repeats › EzrA 0.74 65.0 5.96e-01 98.6% 78.9%
3718795 109.4.1.257 alpha superhelices › Repetitive alpha hairpins › ARM repeat › ARM repeat › PDS5 0.74 51.0 2.93e-01 72.2% 7.5%
4977369 304.48.1.3 a+b two layers › Alpha-beta plaits › Adenylyl and guanylyl cyclase catalytic domain-like › Adenylyl and guanylyl cyclase catalytic domain-like › DNA_pol_B 0.73 54.0 3.73e-01 79.2% 36.4%
3371270 633.10.1.0 alpha bundles › Bromodomain-like › IVS-encoded protein-like › IVS-encoded protein-like 0.73 64.0 5.22e-01 100.0% 59.3%
3583793 632.1.1.0 alpha bundles › immunoglobulin/albumin-binding domain-like › Families 57/38 glycoside transferase middle domain › Families 57/38 glycoside transferase middle domain 0.73 66.0 5.41e-01 100.0% 75.4%
3309205 633.21.1.0 alpha bundles › Bromodomain-like › Uncharacterized protein PA2107 › Uncharacterized protein PA2107 0.72 63.0 5.08e-01 100.0% 57.2%
4667859 192.7.1.2 alpha bundles › Long alpha-hairpin › tRNA-binding arm › tRNA-binding arm › Seryl_tRNA_N 0.72 51.0 4.41e-01 75.0% 48.7%
4962556 633.10.1.0 alpha bundles › Bromodomain-like › IVS-encoded protein-like › IVS-encoded protein-like 0.72 62.0 5.43e-01 100.0% 82.6%
4027991 4984.1.1.0 alpha bundles › Duffy-binding-like domain, C-terminal subdomain › Duffy-binding-like domain, C-terminal subdomain › Duffy-binding-like domain, C-terminal subdomain 0.71 50.0 4.58e-01 73.6% 55.8%
3659411 3567.1.1.0 a+b duplicates or obligate multimers › MPER trimer › MPER trimer › MPER trimer 0.71 62.0 5.46e-01 100.0% 75.5%
5010095 3755.4.1.0 alpha bundles › YscO-like › Phosphatidylinositol 3-kinase regulatory subunit inter-SH2 domain › Phosphatidylinositol 3-kinase regulatory subunit inter-SH2 domain 0.71 62.0 5.06e-01 100.0% 66.7%
3463388 150.1.1.0 alpha bundles › Ferritin/Heme oxygenase/4-helical cytokines › Ferritin/Heme oxygenase › Ferritin 0.71 62.0 4.92e-01 97.2% 68.3%
5010063 604.24.1.1 alpha bundles › Spectrin repeat-like › Helical bundle domain in putative transcriptional regulator Jann_0659-related proteins › Helical bundle domain in putative transcriptional regulator Jann_0659-related proteins › PaaX_C 0.71 48.0 4.34e-01 75.0% 51.0%
5032386 3352.1.1.0 alpha bundles › STT3/PglB/AglB transmembrane domain › STT3/PglB/AglB transmembrane domain › STT3/PglB/AglB transmembrane domain 0.70 61.0 3.80e-01 100.0% 20.7%
3677293 160.1.1.0 alpha superhelices › C-terminal domain of alpha and beta subunits of F1 ATP synthase › C-terminal domain of alpha and beta subunits of F1 ATP synthase › C-terminal domain of alpha and beta subunits of F1 ATP synthase 0.70 63.0 5.37e-01 100.0% 67.0%
4019391 633.21.1.16 alpha bundles › Bromodomain-like › Uncharacterized protein PA2107 › Uncharacterized protein PA2107 › RMP1 0.69 61.0 4.90e-01 100.0% 86.2%
4774281 1147.1.1.1 alpha bundles › RNA polymerase II elongation factor ELL2 C-terminal domain › RNA polymerase II elongation factor ELL2 C-terminal domain › RNA polymerase II elongation factor ELL2 C-terminal domain › Occludin_ELL 0.69 48.0 4.22e-01 73.6% 81.7%
3441901 632.1.1.13 alpha bundles › immunoglobulin/albumin-binding domain-like › Families 57/38 glycoside transferase middle domain › Families 57/38 glycoside transferase middle domain › Rx_N 0.68 58.0 5.65e-01 98.6% 98.8%
4464762 2003.1.2.102 a/b three-layered sandwiches › Rossmann-like › Rossmann-related › FAD/NAD(P)-binding domain › FAD_binding_3, Pyr_redox_2 0.67 58.0 3.75e-01 100.0% 20.0%
3717267 109.4.1.257 alpha superhelices › Repetitive alpha hairpins › ARM repeat › ARM repeat › PDS5 0.67 52.0 2.86e-01 83.3% 47.4%
4604117 5069.1.1.0 alpha bundles › Transmembrane heme-binding four-helical bundle › Transmembrane heme-binding four-helical bundle › Transmembrane di-heme cytochromes 0.67 58.0 5.10e-01 100.0% 70.0%
3777869 192.13.1.2 alpha bundles › Long alpha-hairpin › ISY1 N-terminal domain-like › ISY1 N-terminal domain-like › Nexin_C 0.67 52.0 4.35e-01 83.3% 55.8%
4959101 304.48.1.3 a+b two layers › Alpha-beta plaits › Adenylyl and guanylyl cyclase catalytic domain-like › Adenylyl and guanylyl cyclase catalytic domain-like › DNA_pol_B 0.65 53.0 3.71e-01 91.7% 38.8%
5034821 632.11.1.0 alpha bundles › immunoglobulin/albumin-binding domain-like › AF1782-like › AF1782-like 0.65 54.0 5.52e-01 100.0% 98.6%
4034220 632.2.1.5 alpha bundles › immunoglobulin/albumin-binding domain-like › Bacterial immunoglobulin/albumin-binding domains › Bacterial immunoglobulin/albumin-binding domains › DUF1542 0.61 51.0 5.18e-01 100.0% 100.0%
4410495 605.1.1.206 alpha duplicates or obligate multimers › ROP-like › Homodimeric domain of signal transducing histidine kinase › Homodimeric domain of signal transducing histidine kinase › Insulin 0.60 51.0 4.82e-01 98.6% 90.0%
3278450 547.1.1.1 alpha duplicates or obligate multimers › Glutamyl tRNA-reductase dimerization domain › Glutamyl tRNA-reductase dimerization domain › Glutamyl tRNA-reductase dimerization domain › GlutR_dimer 0.58 51.0 4.93e-01 97.2% 100.0%
4947531 5059.1.1.1 alpha bundles › Drug/Metabolite transporter › Drug/Metabolite transporter › Drug/Metabolite transporter › EamA 0.57 48.0 3.30e-01 97.2% 75.5%
4329038 375.1.9.15 few secondary structure elements › Rubredoxin-like › Rubredoxin-related › Zinc-nucleated domain of serine integrase › Insulin 0.56 48.0 4.50e-01 98.6% 90.0%
3367150 3718.1.1.0 alpha bundles › Flagellar protein fliT › Flagellar protein fliT › Flagellar protein fliT 0.56 38.0 3.53e-01 70.8% 61.1%
4488191 191.1.1.0 alpha bundles › Tetracyclin repressor-like, C-terminal domain › Tetracyclin repressor-like, C-terminal domain › Tetracyclin repressor-like, C-terminal domain 0.56 43.0 3.83e-01 88.9% 63.5%
3261143 5050.1.1.0 alpha complex topology › Major facilitator superfamily (MFS) general substrate transporter › Major facilitator superfamily (MFS) general substrate transporter › Major facilitator superfamily (MFS) general substrate transporter 0.55 47.0 3.67e-01 100.0% 42.5%
3482907 3291.1.1.0 alpha bundles › Charged multivesicular body protein 3 (CHMP3)-related › Charged multivesicular body protein 3 (CHMP3)-related › Charged multivesicular body protein 3 (CHMP3)-related 0.55 47.0 4.12e-01 100.0% 87.8%
3262258 5050.1.1.4 alpha complex topology › Major facilitator superfamily (MFS) general substrate transporter › Major facilitator superfamily (MFS) general substrate transporter › Major facilitator superfamily (MFS) general substrate transporter › Nucleoside_tran 0.54 46.0 3.54e-01 95.8% 40.6%
3830182 142.1.1.21 alpha complex topology › Sigma2 domain-like › Sigma2 domain of RNA polymerase sigma factors › Sigma2 domain of RNA polymerase sigma factors › KIX_2 0.54 40.0 3.96e-01 77.8% 81.3%