Conserved Domains and Related Protein Families
Conserved Domains Detected by RPS-BLAST
Original result of RPS-BLAST against CDD database part I
ID Alignment Graph Length
Definition
E-value
Query 112
smart00470 89
smart00470, ParB, ParB-like nuclease domain
7e-07
pfam02195 90
pfam02195, ParBc, ParB-like nuclease domain
8e-05
>gnl|CDD|214678 smart00470, ParB, ParB-like nuclease domain
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Score = 43.4 bits (103), Expect = 7e-07
Identities = 12/38 (31%), Positives = 24/38 (63%)
Query: 44 ELPLDKIRRPLMRTRANDQNKVKELMDSIQQIGLQVPV 81
E+P++K+R + R + ++EL +SI++ GL P+
Sbjct: 2 EVPIEKLRPNPDQPRLTSEESLEELAESIKENGLLQPI 39
Plasmid RK2 ParB preferentially cleaves single-stranded DNA. ParB also nicks supercoiled plasmid DNA preferably at sites with potential single-stranded character, like AT-rich regions and sequences that can form cruciform structures. ParB also exhibits 5-->3 exonuclease activity. Length = 89
>gnl|CDD|216926 pfam02195, ParBc, ParB-like nuclease domain
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Score = 38.1 bits (89), Expect = 8e-05
Identities = 13/38 (34%), Positives = 25/38 (65%)
Query: 44 ELPLDKIRRPLMRTRANDQNKVKELMDSIQQIGLQVPV 81
E+P+DK+R + R + +++EL+ SI++ GL P+
Sbjct: 2 EVPIDKLRPNEDQPRLTSEEELEELIASIKEHGLLQPI 39
Conserved Domains Detected by HHsearch
Original result of HHsearch against CDD database
ID Alignment Graph Length
Definition
Probability
Query
112
KOG3388 136
consensus Predicted transcription regulator/nuclea
99.57
COG5119 119
Uncharacterized protein, contains ParB-like nuclea
98.85
TIGR03454
325
partition_RepB plasmid partitioning protein RepB.
98.34
smart00470 89
ParB ParB-like nuclease domain. Plasmid RK2 ParB p
98.21
TIGR00180
187
parB_part ParB-like partition proteins. This model
98.16
PRK13866
336
plasmid partitioning protein RepB; Provisional
98.15
TIGR03764
258
ICE_PFGI_1_parB integrating conjugative element, P
98.15
COG1475
240
Spo0J Stage 0 sporulation protein J (antagonist of
97.83
PF02195 90
ParBc: ParB-like nuclease domain; InterPro: IPR003
97.75
PRK13832
520
plasmid partitioning protein; Provisional
97.41
TIGR03734
554
PRTRC_parB PRTRC system ParB family protein. A nov
96.97
PRK13698
323
plasmid-partitioning protein; Provisional
96.21
>KOG3388 consensus Predicted transcription regulator/nuclease, contains ParB domain [Replication, recombination and repair]
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Probab=99.57 E-value=2.6e-15 Score=112.93 Aligned_cols=76 Identities=30% Similarity=0.546 Sum_probs=65.1
Q ss_pred CcceeEEeccCCcccccceEEeccCCC-CCCCCCCCCCCCCeEEecccccccCCCCCCCCCCHHHHHHHHHHHHh-----
Q 033774 1 MANFVVQLPKTNSFNLKRFCVSASSNG-NPPGSSESRGSGPVILELPLDKIRRPLMRTRANDQNKVKELMDSIQQ----- 74 (112)
Q Consensus 1 m~~~~~~~~~~~~~~~~~~~~~~~s~g-~~~~~~~ae~~G~vV~EVPL~~I~RP~~R~rvlDeeKVqELM~SIre----- 74 (112)
|||.++|+|.+ +|+|++|++|++ .++ +++||++|.||++ +++|++|+++||+|++.
T Consensus 1 ~~~~~~r~~~s----~~s~~~S~~S~s~~~p------------v~~~mSei~rPi~--pvLd~qKi~slm~Tmkn~~~c~ 62 (136)
T KOG3388|consen 1 MANLMMRLPIS----LRSFSTSAHSSSGSPP------------VEGPMSEIVRPIP--PVLDLQKIRSLMETMKNDQNCV 62 (136)
T ss_pred Cchhhhhcchh----hhhheeehhccCCCCc------------eecchhhcccCCC--cccCHHHHHHHHHHhcCCCccc
Confidence 89999999999 999999988664 444 7899999999998 89999999999887765
Q ss_pred ---------cCCCCCeeeecCCCCCcccEE
Q 033774 75 ---------IGLQVPVRTNHPPPPRAVNLI 95 (112)
Q Consensus 75 ---------~GLr~PIDVleV~p~~~~n~~ 95 (112)
.|+++||||+|+. -+|+.+.
T Consensus 63 les~d~~~~aGelpPiDvl~v~-~~G~~~Y 91 (136)
T KOG3388|consen 63 LESEDSIRQAGELPPIDVLEVD-SEGGDYY 91 (136)
T ss_pred hhhHHHHHhcCCCCCceEEEEe-cCCceEE
Confidence 6999999999998 5565543
>COG5119 Uncharacterized protein, contains ParB-like nuclease domain [General function prediction only]
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Probab=98.85 E-value=2.4e-09 Score=79.26 Aligned_cols=47 Identities=36% Similarity=0.494 Sum_probs=41.0
Q ss_pred CeEEecccccccCCCCCCCCCCHHHHHHHHHHH---------------HhcCCCCCeeee--cCCC
Q 033774 40 PVILELPLDKIRRPLMRTRANDQNKVKELMDSI---------------QQIGLQVPVRTN--HPPP 88 (112)
Q Consensus 40 ~vV~EVPL~~I~RP~~R~rvlDeeKVqELM~SI---------------re~GLr~PIDVl--eV~p 88 (112)
..++||||++|+||++ +++|+.||+++|++. .+.|-++||||+ ++++
T Consensus 8 v~~~EiplseirRPlp--pvlDp~Kv~am~~tM~g~t~~~sc~l~e~~a~aGelpPvDVL~~~v~G 71 (119)
T COG5119 8 VNIQEIPLSEIRRPLP--PVLDPNKVNAMMETMTGKTPPASCGLTEEDAAAGELPPVDVLTFEVDG 71 (119)
T ss_pred ccceeccHHHhhcCCC--CCCCHHHHHHHHHHhcCCCCCccccchHhHHhcCCCCCceeEEEEecC
Confidence 4689999999999999 899999999997665 667999999999 5554
>TIGR03454 partition_RepB plasmid partitioning protein RepB
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Probab=98.34 E-value=1.2e-06 Score=72.52 Aligned_cols=55 Identities=27% Similarity=0.471 Sum_probs=46.8
Q ss_pred CCCeEEecccccccCCCCCCC-CCCHHHHHHHHHHHHhcCCCCCeeeecCCCCCcc
Q 033774 38 SGPVILELPLDKIRRPLMRTR-ANDQNKVKELMDSIQQIGLQVPVRTNHPPPPRAV 92 (112)
Q Consensus 38 ~G~vV~EVPL~~I~RP~~R~r-vlDeeKVqELM~SIre~GLr~PIDVleV~p~~~~ 92 (112)
.|-.|.+||.+.|+....++| .+|++++++|.+||+++|+++||-|+..+...|.
T Consensus 60 ~g~~v~eldp~~I~~s~~~dR~~~d~~~~~eL~~SIr~~Gq~~PIlVR~~p~~~gr 115 (325)
T TIGR03454 60 EGETVVELDPALIDPSFVRDRLDSDDEAFADLVESIRENGQQVPILVRPHPEAEGR 115 (325)
T ss_pred CCCceEEeCHHHcCCCCCCCCCCCCHHHHHHHHHHHHHhCCcCCeEEEECCCCCCC
Confidence 488899999999999444444 8899999999999999999999999987654444
Members of this family are the RepB protein involved in replicon partitioning. RepB is found, in general, as part of a repABC operon in plasmids and small chromosomes, separate from the main chromosome, in various bacteria. This model describes a rather narrow clade of proteins; it should be noted that additional homologs scoring below the trusted cutoff have very similar functions, although they may be named differently.
>smart00470 ParB ParB-like nuclease domain
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Probab=98.21 E-value=2.9e-06 Score=55.52 Aligned_cols=43 Identities=28% Similarity=0.497 Sum_probs=37.8
Q ss_pred ecccccccC-CCCCCCCCCHHHHHHHHHHHHhcCCCCCeeeecCC
Q 033774 44 ELPLDKIRR-PLMRTRANDQNKVKELMDSIQQIGLQVPVRTNHPP 87 (112)
Q Consensus 44 EVPL~~I~R-P~~R~rvlDeeKVqELM~SIre~GLr~PIDVleV~ 87 (112)
+||+++|.. |.+++.. |++++++|.+||++.|..+||.|.+.+
T Consensus 2 ~i~i~~i~~~~~n~r~~-~~~~~~~l~~si~~~G~~~Pi~v~~~~ 45 (89)
T smart00470 2 EVPIEKLRPNPDQPRLT-SEESLEELAESIKENGLLQPIIVRPND 45 (89)
T ss_pred cccHHHeecCCCCCCcC-CHHHHHHHHHHHHHhCCccCeEEEecC
Confidence 689999995 7764445 999999999999999999999999865
Plasmid RK2 ParB preferentially cleaves single-stranded DNA. ParB also nicks supercoiled plasmid DNA preferably at sites with potential single-stranded character, like AT-rich regions and sequences that can form cruciform structures. ParB also exhibits 5--3 exonuclease activity.
>TIGR00180 parB_part ParB-like partition proteins
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Probab=98.16 E-value=5e-06 Score=61.82 Aligned_cols=48 Identities=21% Similarity=0.443 Sum_probs=42.4
Q ss_pred eEEecccccccC-CCCCCCCCCHHHHHHHHHHHHhcCCCCCeeeecCCC
Q 033774 41 VILELPLDKIRR-PLMRTRANDQNKVKELMDSIQQIGLQVPVRTNHPPP 88 (112)
Q Consensus 41 vV~EVPL~~I~R-P~~R~rvlDeeKVqELM~SIre~GLr~PIDVleV~p 88 (112)
.+.++|++.|.. |..++..++++++++|.+||++.|+.+||-|+..+.
T Consensus 4 ~~~~ip~~~l~~~~~n~R~~~~~~~i~~L~~SI~~~G~~~Pi~V~~~~~ 52 (187)
T TIGR00180 4 GLIEIDIDLLQPNPYQPRKDFSEESLAELIESIKEQGQLQPILVRKHPD 52 (187)
T ss_pred eeEEeeHHHccCCCCCCCCCCCHHHHHHHHHHHHHhCCccCeEEEECCC
Confidence 367899999998 776556899999999999999999999999998764
This model represents the most well-conserved core of a set of chromosomal and plasmid partition proteins related to ParB, including Spo0J, RepB, and SopB. Spo0J has been shown to bind a specific DNA sequence that, when introduced into a plasmid, can serve as partition site. Study of RepB, which has nicking-closing activity, suggests that it forms a transient protein-DNA covalent intermediate during the strand transfer reaction.
>PRK13866 plasmid partitioning protein RepB; Provisional
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Probab=98.15 E-value=4.5e-06 Score=69.93 Aligned_cols=55 Identities=27% Similarity=0.392 Sum_probs=46.7
Q ss_pred CCCCeEEecccccccCCCCCCC-CCC-HHHHHHHHHHHHhcCCCCCeeeecCCCCCc
Q 033774 37 GSGPVILELPLDKIRRPLMRTR-AND-QNKVKELMDSIQQIGLQVPVRTNHPPPPRA 91 (112)
Q Consensus 37 ~~G~vV~EVPL~~I~RP~~R~r-vlD-eeKVqELM~SIre~GLr~PIDVleV~p~~~ 91 (112)
+.|-.|.||+.+.|+.-+.+|| .+| .++++||.+||+++|+++||-|+..+...|
T Consensus 60 ~~g~~v~eid~~~I~~s~~~dRl~~d~d~~~~eL~~SI~~~Gq~~PIlVRp~p~~~g 116 (336)
T PRK13866 60 AAGEAVVSLDPSMIDGSPIADRLPADVDPKFEQLEASISQEGQQVPILVRPHPEAAG 116 (336)
T ss_pred hCCCeEEEeCHHHccCCcCCCCcCCCccHHHHHHHHHHHHhCCcCCeEEEECCCCCC
Confidence 3888999999999999655577 665 479999999999999999999999875444
>TIGR03764 ICE_PFGI_1_parB integrating conjugative element, PFGI_1 class, ParB family protein
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Probab=98.15 E-value=4e-06 Score=68.30 Aligned_cols=47 Identities=23% Similarity=0.361 Sum_probs=42.0
Q ss_pred eEEecccccccC-CCCCCCCCCHHHHHHHHHHHHhcCCCCCeeeecCCC
Q 033774 41 VILELPLDKIRR-PLMRTRANDQNKVKELMDSIQQIGLQVPVRTNHPPP 88 (112)
Q Consensus 41 vV~EVPL~~I~R-P~~R~rvlDeeKVqELM~SIre~GLr~PIDVleV~p 88 (112)
....||+++|.+ |.++|..+|++ +++|.+||+++|+++||.|...++
T Consensus 7 ~~~~l~Id~I~Pn~~qPR~~fd~~-l~eLa~SIre~Gl~qPI~Vr~~p~ 54 (258)
T TIGR03764 7 TPMVLTLDQLRPYEDNPRTTRNPK-YDEIKASIRERGLDQPPKVTRRPG 54 (258)
T ss_pred ceEEEEHHHcccCCCCCCCCCCHH-HHHHHHHHHHhCCcCCeEEEecCC
Confidence 356799999999 88777889988 999999999999999999998765
Members of this protein family carry the ParB-type nuclease domain and are found in integrating conjugative elements (ICE) in the same class as PFGI-1 of Pseudomonas fluorescens Pf-5.
>COG1475 Spo0J Stage 0 sporulation protein J (antagonist of Soj) containing ParB-like nuclease domain [Transcription]
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Probab=97.83 E-value=2.8e-05 Score=57.23 Aligned_cols=45 Identities=27% Similarity=0.446 Sum_probs=40.4
Q ss_pred eEEecccccccC-CCCCCCCCCHHHHHHHHHHHHhcCCCCCeeeec
Q 033774 41 VILELPLDKIRR-PLMRTRANDQNKVKELMDSIQQIGLQVPVRTNH 85 (112)
Q Consensus 41 vV~EVPL~~I~R-P~~R~rvlDeeKVqELM~SIre~GLr~PIDVle 85 (112)
.+.++++..|.. |+++++.+|++++++|.+||+++|+.+||-|..
T Consensus 3 ~~~~~~~~~i~~~~~~~r~~~~~~~~~~l~~SI~~~G~~~Pi~v~~ 48 (240)
T COG1475 3 RVVEIDIVLIAPNPLQPRKKFDEESLEELAASIKEFGLIQPIVVRP 48 (240)
T ss_pred cceecCHHHcCCCCCCCCccCCHHHHHHHHHHHHHhCCcCCeeEee
Confidence 567889999998 666666899999999999999999999999996
>PF02195 ParBc: ParB-like nuclease domain; InterPro: IPR003115 Proteins containing this domain, appear to be related to the Escherichia coli plasmid protein ParB, which preferentially cleaves single-stranded DNA
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Probab=97.75 E-value=1.4e-05 Score=51.61 Aligned_cols=43 Identities=28% Similarity=0.506 Sum_probs=34.9
Q ss_pred ecccccccC-CCCCCCCCCHHHHHHHHHHHHhcCCCCCeeeecCC
Q 033774 44 ELPLDKIRR-PLMRTRANDQNKVKELMDSIQQIGLQVPVRTNHPP 87 (112)
Q Consensus 44 EVPL~~I~R-P~~R~rvlDeeKVqELM~SIre~GLr~PIDVleV~ 87 (112)
+||++.|.. +...+.. +++++++|.+||++.|+.+||.|...+
T Consensus 2 ~v~~~~l~~~~~~~r~~-~~~~~~~l~~si~~~G~~~Pi~v~~~~ 45 (90)
T PF02195_consen 2 EVPISKLKPSPDNPRKD-DPEKIEELAESIKENGQLQPIIVRRRN 45 (90)
T ss_dssp EEEGGGEE-SBS-HHHH-HHHHHHHHHHHHHHHGCSS-EEEEEEC
T ss_pred eEeHHHCCCCCCCCCCC-CHHHHHHHHHHHHhcCCCCCcEEEeec
Confidence 689999994 5532224 899999999999999999999999987
ParB also nicks supercoiled plasmid DNA preferably at sites with potential single-stranded character, like AT-rich regions and sequences that can form cruciform structures. ParB also exhibits 5--3 exonuclease activity.; GO: 0003677 DNA binding; PDB: 1VK1_A 3CYI_A 1YZS_A 2RII_X 2B6F_A 3HY2_Y 1XW4_X 1XW3_A 1VZ0_G 1R71_C ....
>PRK13832 plasmid partitioning protein; Provisional
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Probab=97.41 E-value=0.0003 Score=62.37 Aligned_cols=47 Identities=13% Similarity=0.223 Sum_probs=40.6
Q ss_pred eEEecccccccC-CCCCCCCC-CHHHHHHHHHHHHhcCCCCCeeeecCC
Q 033774 41 VILELPLDKIRR-PLMRTRAN-DQNKVKELMDSIQQIGLQVPVRTNHPP 87 (112)
Q Consensus 41 vV~EVPL~~I~R-P~~R~rvl-DeeKVqELM~SIre~GLr~PIDVleV~ 87 (112)
.+.+||++.|.. |.++|+.+ |++++++|.+||+++|+.+||-|+..+
T Consensus 2 ~L~~Id~~~L~~nP~NpRr~~~~~e~I~ELAaSIr~~GLLQPIiVRp~~ 50 (520)
T PRK13832 2 ELRKVDPRALKDNPDNTRRSKSSPQSDALLLATIKAVGIVQPPVVSPEE 50 (520)
T ss_pred eeEEecHHHCCcCCCCCCCCCCCHHHHHHHHHHHHHhCCccCcEEEecC
Confidence 467899999998 88666654 689999999999999999999999754
>TIGR03734 PRTRC_parB PRTRC system ParB family protein
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Probab=96.97 E-value=0.0014 Score=58.21 Aligned_cols=39 Identities=26% Similarity=0.290 Sum_probs=34.1
Q ss_pred ccCCCCCCCCCCHHHHHHHHHHHHhcCCCCCeeeecCCC
Q 033774 50 IRRPLMRTRANDQNKVKELMDSIQQIGLQVPVRTNHPPP 88 (112)
Q Consensus 50 I~RP~~R~rvlDeeKVqELM~SIre~GLr~PIDVleV~p 88 (112)
|+.+..+|+.+|+++++||.+||+++|+.+||-|+..+.
T Consensus 2 i~~~~NPRk~~d~~~IeELA~SIr~~GlLQPIlVRp~~~ 40 (554)
T TIGR03734 2 IVPGNNPRRYFDPAEMAELVESIRAKGVLQPILVRPVPG 40 (554)
T ss_pred CCCCCCCCCCCCHHHHHHHHHHHHHcCCccCeEEEEcCC
Confidence 566777777999999999999999999999999996643
A novel genetic system characterized by six major proteins, included a ParB homolog and a ThiF homolog, is designated PRTRC, or ParB-Related,ThiF-Related Cassette. It is often found on plasmids. This protein family the member related to ParB, and is designated PRTRC system ParB family protein.
>PRK13698 plasmid-partitioning protein; Provisional
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Probab=96.21 E-value=0.0053 Score=51.60 Aligned_cols=33 Identities=18% Similarity=0.252 Sum_probs=30.2
Q ss_pred CCCC-CCCHHHHHHHHHHHHhcCCCCCeeeecCC
Q 033774 55 MRTR-ANDQNKVKELMDSIQQIGLQVPVRTNHPP 87 (112)
Q Consensus 55 ~R~r-vlDeeKVqELM~SIre~GLr~PIDVleV~ 87 (112)
.|+. .|||+++++|.+||+++|+++||-|++++
T Consensus 78 ~R~Q~~f~e~sL~dL~~SIk~~G~~qPiivR~~~ 111 (323)
T PRK13698 78 ERDQELLTEDSLDDLIPSFLLTGQQTPAFGRRVS 111 (323)
T ss_pred CcchhhCCHHHHHHHHHHHHHhCCCcCeEEEEeC
Confidence 5666 99999999999999999999999999973
Homologous Structure Domains