Citrus Sinensis ID: 023087
Local Sequence Feature Prediction
| Prediction and (Method) | Result |
|---|
Close Homologs for Annotation Transfer
Close Homologs in the Non-Redundant Database Detected by BLAST 
Original result of BLAST against Nonredundant Database
GI ![]() | Alignment Graph ![]() | Length ![]() |
Definition ![]() |
Q cover ![]() |
H cover ![]() |
Identity ![]() |
E-value ![]() |
| Query | 287 | ||||||
| 225458581 | 362 | PREDICTED: origin recognition complex su | 0.993 | 0.787 | 0.807 | 1e-140 | |
| 255573645 | 363 | plant origin recognition complex subunit | 0.996 | 0.787 | 0.818 | 1e-138 | |
| 449470053 | 360 | PREDICTED: origin recognition complex su | 0.986 | 0.786 | 0.789 | 1e-134 | |
| 356552198 | 366 | PREDICTED: origin recognition complex su | 0.989 | 0.775 | 0.757 | 1e-129 | |
| 356562287 | 370 | PREDICTED: LOW QUALITY PROTEIN: origin r | 0.986 | 0.764 | 0.742 | 1e-126 | |
| 357437889 | 361 | Origin recognition complex subunit [Medi | 0.968 | 0.770 | 0.740 | 1e-123 | |
| 15224316 | 363 | origin recognition complex subunit 2 [Ar | 0.993 | 0.785 | 0.730 | 1e-121 | |
| 297823599 | 361 | ATORC2/ORC2 [Arabidopsis lyrata subsp. l | 0.993 | 0.789 | 0.727 | 1e-120 | |
| 356552200 | 347 | PREDICTED: origin recognition complex su | 0.923 | 0.763 | 0.722 | 1e-119 | |
| 42571101 | 345 | origin recognition complex subunit 2 [Ar | 0.930 | 0.773 | 0.699 | 1e-117 |
| >gi|225458581|ref|XP_002282636.1| PREDICTED: origin recognition complex subunit 2-like [Vitis vinifera] | Back alignment and taxonomy information |
|---|
Score = 504 bits (1299), Expect = e-140, Method: Compositional matrix adjust.
Identities = 231/286 (80%), Positives = 262/286 (91%), Gaps = 1/286 (0%)
Query: 2 LRCGFGLLMYGFGSKKALLEDFASTALTEYSVVVINGYLQSINIKQVVITLAEVLWNQCK 61
LRCGFGLLMYGFGSKKAL+EDFASTALTE +V+VINGYLQSINIKQ V +AE LW+Q K
Sbjct: 78 LRCGFGLLMYGFGSKKALIEDFASTALTECAVLVINGYLQSINIKQAVTAIAEALWDQLK 137
Query: 62 SKRKTPSGNLPRAQQPFNSRSMDDLFAFLDGSELKENDYFVCVVIHNIDGPGLRDSETQQ 121
++R TPSG+ P+ QQPFNSRSMDDL AF+DGS ++ND FVCVVIHNIDGPGLRDS+TQQ
Sbjct: 138 TRR-TPSGDFPKVQQPFNSRSMDDLLAFMDGSHSEKNDCFVCVVIHNIDGPGLRDSDTQQ 196
Query: 122 HLGRIAFCSHIRMIASIDHVNAPLLWDKKMVHTQFNWHWYHVPTFAPYKVEGMFFPLILA 181
+L R+A CSHIRM+ASIDHVNAPLLWDKKMVHTQFNW WYHVPTF PYK EG+F+PLILA
Sbjct: 197 YLARVAACSHIRMVASIDHVNAPLLWDKKMVHTQFNWCWYHVPTFVPYKAEGIFYPLILA 256
Query: 182 HGSSAQTAKTAAIVLQSLTPNAQSVFKILAEYQLSHPDEEGMPIDTLYATSRERFLVSSQ 241
HG +AQ+AKTAAIVLQSLTPNAQSVFK+LAE+QL+HPDEEGMP++ LY+ RERFLVSSQ
Sbjct: 257 HGGTAQSAKTAAIVLQSLTPNAQSVFKVLAEHQLAHPDEEGMPVNNLYSICRERFLVSSQ 316
Query: 242 VTLNSHLTEFKDHELVKTRRHSDGQDCFYIPLASEALEKLLSEINQ 287
+TLNSHLTEFKDHEL+KTRRHSDGQDC YIPLA+EALEKLL +I+Q
Sbjct: 317 ITLNSHLTEFKDHELIKTRRHSDGQDCLYIPLATEALEKLLQDISQ 362
|
Source: Vitis vinifera Species: Vitis vinifera Genus: Vitis Family: Vitaceae Order: Vitales Class: Phylum: Streptophyta Superkingdom: Eukaryota |
| >gi|255573645|ref|XP_002527745.1| plant origin recognition complex subunit, putative [Ricinus communis] gi|223532886|gb|EEF34658.1| plant origin recognition complex subunit, putative [Ricinus communis] | Back alignment and taxonomy information |
|---|
| >gi|449470053|ref|XP_004152733.1| PREDICTED: origin recognition complex subunit 2-like [Cucumis sativus] gi|449496004|ref|XP_004160009.1| PREDICTED: origin recognition complex subunit 2-like [Cucumis sativus] | Back alignment and taxonomy information |
|---|
| >gi|356552198|ref|XP_003544456.1| PREDICTED: origin recognition complex subunit 2-like isoform 1 [Glycine max] | Back alignment and taxonomy information |
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| >gi|356562287|ref|XP_003549403.1| PREDICTED: LOW QUALITY PROTEIN: origin recognition complex subunit 2-like [Glycine max] | Back alignment and taxonomy information |
|---|
| >gi|357437889|ref|XP_003589220.1| Origin recognition complex subunit [Medicago truncatula] gi|355478268|gb|AES59471.1| Origin recognition complex subunit [Medicago truncatula] | Back alignment and taxonomy information |
|---|
| >gi|15224316|ref|NP_181292.1| origin recognition complex subunit 2 [Arabidopsis thaliana] gi|2498706|sp|Q38899.1|ORC2_ARATH RecName: Full=Origin recognition complex subunit 2 gi|1113103|gb|AAC49131.1| atOrc2p [Arabidopsis thaliana] gi|3236239|gb|AAC23627.1| origin recognition complex protein [Arabidopsis thaliana] gi|17979313|gb|AAL49882.1| putative origin recognition complex protein [Arabidopsis thaliana] gi|20465531|gb|AAM20248.1| putative origin recognition complex [Arabidopsis thaliana] gi|21593764|gb|AAM65731.1| origin recognition complex protein [Arabidopsis thaliana] gi|330254322|gb|AEC09416.1| origin recognition complex subunit 2 [Arabidopsis thaliana] | Back alignment and taxonomy information |
|---|
| >gi|297823599|ref|XP_002879682.1| ATORC2/ORC2 [Arabidopsis lyrata subsp. lyrata] gi|297325521|gb|EFH55941.1| ATORC2/ORC2 [Arabidopsis lyrata subsp. lyrata] | Back alignment and taxonomy information |
|---|
| >gi|356552200|ref|XP_003544457.1| PREDICTED: origin recognition complex subunit 2-like isoform 2 [Glycine max] | Back alignment and taxonomy information |
|---|
| >gi|42571101|ref|NP_973624.1| origin recognition complex subunit 2 [Arabidopsis thaliana] gi|330254323|gb|AEC09417.1| origin recognition complex subunit 2 [Arabidopsis thaliana] | Back alignment and taxonomy information |
|---|
Prediction of Gene Ontology (GO) Terms
Close Homologs with Gene Ontology terms Detected by BLAST 
Original result of BLAST against Gene Ontology (AMIGO)
ID ![]() |
Alignment graph ![]() |
Length ![]() |
Definition ![]() |
Q cover ![]() |
H cover ![]() |
Identity ![]() |
E-value ![]() |
| Query | 287 | ||||||
| TAIR|locus:2040706 | 363 | ORC2 "origin recognition compl | 0.993 | 0.785 | 0.713 | 6.1e-110 | |
| UNIPROTKB|Q9XFD6 | 379 | OsORC2 "Origin recognition com | 0.937 | 0.709 | 0.672 | 3.8e-101 | |
| ZFIN|ZDB-GENE-061013-682 | 553 | zgc:153041 "zgc:153041" [Danio | 0.592 | 0.307 | 0.402 | 5.1e-45 | |
| UNIPROTKB|F1NDM4 | 569 | ORC2 "Uncharacterized protein" | 0.665 | 0.335 | 0.389 | 4.8e-44 | |
| UNIPROTKB|Q13416 | 577 | ORC2 "Origin recognition compl | 0.665 | 0.331 | 0.369 | 1.9e-42 | |
| RGD|1311844 | 576 | Orc2 "origin recognition compl | 0.585 | 0.291 | 0.395 | 4.7e-42 | |
| UNIPROTKB|A6QNM3 | 577 | ORC2 "Origin recognition compl | 0.665 | 0.331 | 0.358 | 1.1e-41 | |
| UNIPROTKB|F1N230 | 577 | ORC2 "Origin recognition compl | 0.665 | 0.331 | 0.358 | 1.1e-41 | |
| MGI|MGI:1328306 | 576 | Orc2 "origin recognition compl | 0.585 | 0.291 | 0.389 | 1.3e-41 | |
| UNIPROTKB|E2RSR0 | 577 | ORC2 "Uncharacterized protein" | 0.881 | 0.438 | 0.357 | 5.9e-41 |
| TAIR|locus:2040706 ORC2 "origin recognition complex second largest subunit 2" [Arabidopsis thaliana (taxid:3702)] | Back alignment and assigned GO terms |
|---|
Score = 1086 (387.4 bits), Expect = 6.1e-110, P = 6.1e-110
Identities = 204/286 (71%), Positives = 238/286 (83%)
Query: 2 LRCGFGLLMYGFGSKKALLEDFASTALTEYSVVVINGYLQSINIKQVVITLAEVLWNQCK 61
LRCGFGLLMYGFGSKKAL+EDFAS +LT+YSVVVINGYL S+N+KQV++ LAE+L K
Sbjct: 79 LRCGFGLLMYGFGSKKALVEDFASASLTDYSVVVINGYLPSVNLKQVLLALAELLSELLK 138
Query: 62 SKRKTPSGNLPRAQQPFNSRSMDDLFAFLDGSELKENDYFVCVVIHNIDGPGLRDSETQQ 121
KRK+ SG+L + Q+ F SRSMDD+ +FL G + + D F+CVV+HNIDGP LRD E+QQ
Sbjct: 139 CKRKS-SGSLSKGQETFPSRSMDDILSFLHGPQSGDKDCFICVVVHNIDGPALRDPESQQ 197
Query: 122 HLGRIAFCSHIRMIASIDHVNAPLLWDKKMVHTQFNWHWYHVPTFAPYKVEGMFFPLILA 181
L R++ CSHIR++ASIDHVNAPLLWDKKMVH QFNW W+HVPTFAPY VEG+FFPL+LA
Sbjct: 198 TLARLSSCSHIRLVASIDHVNAPLLWDKKMVHKQFNWLWHHVPTFAPYNVEGVFFPLVLA 257
Query: 182 HGSSAQTAKTAAIVLQSLTPNAQSVFKILAEYQLSHPDEEGMPIDTLYATSRERFLVSSQ 241
GS+AQTAKTAAIVLQSLTPN Q+VFKILAEYQLSHPDE+GMP D LY+ SRERF VSSQ
Sbjct: 258 QGSTAQTAKTAAIVLQSLTPNGQNVFKILAEYQLSHPDEDGMPTDDLYSASRERFFVSSQ 317
Query: 242 VTLNSHLTEFKDHELVKTRRHSDGQDCFYIPXXXXXXXXXXXXINQ 287
VTLNSHLTEFKDHELVKT+R+SDGQ+C IP +NQ
Sbjct: 318 VTLNSHLTEFKDHELVKTKRNSDGQECLNIPLTSDAIRQLLLDLNQ 363
|
|
| UNIPROTKB|Q9XFD6 OsORC2 "Origin recognition complex subunit 2" [Oryza sativa Japonica Group (taxid:39947)] | Back alignment and assigned GO terms |
|---|
| ZFIN|ZDB-GENE-061013-682 zgc:153041 "zgc:153041" [Danio rerio (taxid:7955)] | Back alignment and assigned GO terms |
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| UNIPROTKB|F1NDM4 ORC2 "Uncharacterized protein" [Gallus gallus (taxid:9031)] | Back alignment and assigned GO terms |
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| UNIPROTKB|Q13416 ORC2 "Origin recognition complex subunit 2" [Homo sapiens (taxid:9606)] | Back alignment and assigned GO terms |
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| RGD|1311844 Orc2 "origin recognition complex, subunit 2" [Rattus norvegicus (taxid:10116)] | Back alignment and assigned GO terms |
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| UNIPROTKB|A6QNM3 ORC2 "Origin recognition complex subunit 2" [Bos taurus (taxid:9913)] | Back alignment and assigned GO terms |
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| UNIPROTKB|F1N230 ORC2 "Origin recognition complex subunit 2" [Bos taurus (taxid:9913)] | Back alignment and assigned GO terms |
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| MGI|MGI:1328306 Orc2 "origin recognition complex, subunit 2" [Mus musculus (taxid:10090)] | Back alignment and assigned GO terms |
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| UNIPROTKB|E2RSR0 ORC2 "Uncharacterized protein" [Canis lupus familiaris (taxid:9615)] | Back alignment and assigned GO terms |
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Prediction of Enzyme Commission (EC) Number
EC Number Prediction by Ezypred Server 
Original result from Ezypred Server
Fail to connect to Ezypred Server
Prediction of Functionally Associated Proteins
Functionally Associated Proteins Detected by STRING 
Original result from the STRING server
| GSVIVG00014796001 | SubName- Full=Chromosome chr18 scaffold_1, whole genome shotgun sequence; (351 aa) | ||||||||||
(Vitis vinifera) | |||||||||||
| GSVIVG00030431001 | • | • | • | 0.774 | |||||||
| GSVIVG00036984001 | • | • | • | • | 0.755 | ||||||
| GSVIVG00017884001 | • | • | • | 0.711 | |||||||
| GSVIVG00013958001 | • | • | • | 0.688 | |||||||
| GSVIVG00018925001 | • | • | • | • | 0.637 | ||||||
| GSVIVG00024619001 | • | • | • | • | 0.619 | ||||||
| GSVIVG00017548001 | • | • | 0.617 | ||||||||
| GSVIVG00036116001 | • | • | 0.518 | ||||||||
| GSVIVG00024137001 | • | • | 0.516 | ||||||||
| GSVIVG00024801001 | • | • | • | • | 0.506 |
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 | 287 | |||
| pfam04084 | 318 | pfam04084, ORC2, Origin recognition complex subuni | 2e-92 | |
| COG5575 | 535 | COG5575, ORC2, Origin recognition complex, subunit | 2e-33 |
| >gnl|CDD|217882 pfam04084, ORC2, Origin recognition complex subunit 2 | Back alignment and domain information |
|---|
Score = 275 bits (706), Expect = 2e-92
Identities = 113/284 (39%), Positives = 162/284 (57%), Gaps = 23/284 (8%)
Query: 2 LRCGFGLLMYGFGSKKALLEDFASTALT-EYSVVVINGYLQSINIKQVVITLAEVLWNQC 60
L GF LL YG GSK+ LLEDFA L+ + VVV+NG+ S+NIK ++ + E+L
Sbjct: 51 LLQGFNLLFYGLGSKRNLLEDFAKEYLSDKGPVVVVNGFFPSLNIKDILNEITELLLEAT 110
Query: 61 KSKRKTPSGNLPRAQQPFNSRSMDDLFAFLDGSELKENDYFVCVVIHNIDGPGLRDSETQ 120
K + S L S+ + ++IHNIDGP LR+ +TQ
Sbjct: 111 DKKPNSVSEQLDFIVSYLKSQPAPP---------------KLYLIIHNIDGPSLRNEKTQ 155
Query: 121 QHLGRIAFCSHIRMIASIDHVNAPLLWDKKMVHTQFNWHWYHVPTFAPYKVEGMFFPLIL 180
L ++A +I +IASIDH+NAPLLWD + + FN+ W+ V TFAPY VE F +L
Sbjct: 156 TLLSQLASIPNIHLIASIDHINAPLLWDSSKL-SSFNFVWHDVTTFAPYTVETSFEDSLL 214
Query: 181 AHGSSAQ-TAKTAAIVLQSLTPNAQSVFKILAEYQLS-----HPDEEGMPIDTLYATSRE 234
S A+ A VL+SLT NA+++FK+LAEYQL + G+ LY RE
Sbjct: 215 LGKSGKSLGAEGAKYVLKSLTENARNLFKLLAEYQLETGNKDGKSKPGVEFKDLYQKCRE 274
Query: 235 RFLVSSQVTLNSHLTEFKDHELVKTRRHSDGQDCFYIPLASEAL 278
F+VSS++TL + LTEF DH+L+++++ +DG + +IP + L
Sbjct: 275 EFIVSSEITLRTQLTEFVDHKLIESKKDADGVEFLWIPFSKGEL 318
|
All DNA replication initiation is driven by a single conserved eukaryotic initiator complex termed he origin recognition complex (ORC). The ORC is a six protein complex. The function of ORC is reviewed in. Length = 318 |
| >gnl|CDD|227862 COG5575, ORC2, Origin recognition complex, subunit 2 [DNA replication, recombination, and repair] | Back alignment and domain information |
|---|
Conserved Domains Detected by HHsearch 
Original result of HHsearch against CDD database
ID ![]() | Alignment Graph ![]() | Length ![]() |
Definition ![]() |
Probability ![]() |
| Query | 287 | |||
| PF04084 | 326 | ORC2: Origin recognition complex subunit 2 ; Inter | 100.0 | |
| KOG2928 | 518 | consensus Origin recognition complex, subunit 2 [R | 100.0 | |
| COG5575 | 535 | ORC2 Origin recognition complex, subunit 2 [DNA re | 100.0 | |
| PRK00411 | 394 | cdc6 cell division control protein 6; Reviewed | 97.79 | |
| TIGR02928 | 365 | orc1/cdc6 family replication initiation protein. M | 97.31 | |
| COG1474 | 366 | CDC6 Cdc6-related protein, AAA superfamily ATPase | 84.24 | |
| PF13730 | 55 | HTH_36: Helix-turn-helix domain | 83.91 | |
| PF13401 | 131 | AAA_22: AAA domain; PDB: 2QBY_B 1FNN_B 1W5T_A 1W5S | 83.79 | |
| PF05621 | 302 | TniB: Bacterial TniB protein; InterPro: IPR008868 | 80.03 |
| >PF04084 ORC2: Origin recognition complex subunit 2 ; InterPro: IPR007220 The Origin Recognition Complex (ORC) is a six-subunit ATP-dependent DNA-binding complex encoded in yeast by ORC1-6 [] | Back alignment and domain information |
|---|
Probab=100.00 E-value=1.1e-90 Score=654.00 Aligned_cols=260 Identities=42% Similarity=0.700 Sum_probs=231.0
Q ss_pred ccCCccEEEEeccchHHHHHHHHHhhcCC---CcEEEEeccCCCCCHHHHHHHHHHHHHhhccccCCCCCCCCCCCCCCC
Q 023087 2 LRCGFGLLMYGFGSKKALLEDFASTALTE---YSVVVINGYLQSINIKQVVITLAEVLWNQCKSKRKTPSGNLPRAQQPF 78 (287)
Q Consensus 2 L~~GFnlL~YG~GSKr~lL~~Fa~~~l~~---~~~vvvnGy~p~~~~k~il~~i~~~l~~~~~~~~~~~~~~~~~~~~~~ 78 (287)
|.+||||||||+||||+||++|+++++.+ +++||||||+|++++|+||++|++++.... . .
T Consensus 51 L~~GFnlL~YG~GSKr~lL~~Fa~~~l~~~~~~~~vvvnGy~p~~~~k~il~~I~~~l~~~~---------~-------~ 114 (326)
T PF04084_consen 51 LSQGFNLLFYGYGSKRKLLNDFAEKYLSDWGDGPVVVVNGYFPSLSIKDILNTIEEALLPEP---------S-------K 114 (326)
T ss_pred HhCCCeEEEEecChHHHHHHHHHHHHhhccCCCcEEEEEccCCCCcHHHHHHHHHHHHhhhc---------c-------c
Confidence 68999999999999999999999999999 999999999999999999999999998741 0 0
Q ss_pred CCCcHHHHHHHHhcccccC-CCceEEEEEEcCCCcCCCChhHHHHHHHHhcCCCeEEEEeecCCCCccccCccccccccc
Q 023087 79 NSRSMDDLFAFLDGSELKE-NDYFVCVVIHNIDGPGLRDSETQQHLGRIAFCSHIRMIASIDHVNAPLLWDKKMVHTQFN 157 (287)
Q Consensus 79 ~~~~~~~l~~~i~~~~~~~-~~~~l~lvIHnIDg~~LR~~~~q~~La~La~~~~I~lIaSiDhinaplLWd~~~~~~~fn 157 (287)
...++.+.++.+.+..... .++++||||||||||+||++++|++||+||++|+||+||||||||||||||..+. .+||
T Consensus 115 ~~~~~~~~~~~i~~~l~~~~~~~~l~lvIHnIDg~~LR~~~~Q~~La~LA~~p~I~lIASiDhinapLLWd~~~~-~~fn 193 (326)
T PF04084_consen 115 KPKSPSEQLDFIISYLESRPSPPPLYLVIHNIDGPSLRNEKAQSLLAQLASIPNIHLIASIDHINAPLLWDSSKL-SRFN 193 (326)
T ss_pred ccCCHHHHHHHHHHHHhccCCCCceEEEEECCCChhhcChHHHHHHHHHHcCCCeEEEEeccCCCcccccChhhH-hhCC
Confidence 1123333444443322222 3889999999999999999999999999999999999999999999999999998 9999
Q ss_pred EEEEeCCCCCCcccccccchhh--hhcCC-cc-chhhHHHHHHhhcCHhHHHHHHHHHHHHhc--------CCCCCCCCH
Q 023087 158 WHWYHVPTFAPYKVEGMFFPLI--LAHGS-SA-QTAKTAAIVLQSLTPNAQSVFKILAEYQLS--------HPDEEGMPI 225 (287)
Q Consensus 158 f~~~d~tT~~pY~~E~~~~~~l--~~~~~-~~-~~~~g~~~VL~SLt~nar~lf~lLa~~QL~--------~~~~~gv~~ 225 (287)
|+|||||||+||++|+++.+++ +.+++ +. .+.+|+.+||+|||+|||+||++||++||+ .....||+|
T Consensus 194 f~~hd~tT~~pY~~E~~~~~~l~~~~g~s~~~~~~~~~~~~VL~SLt~nar~lf~lL~~~QL~~~~~~~~~~~~~~gv~~ 273 (326)
T PF04084_consen 194 FLWHDVTTFAPYTEETSFEDSLHSLLGKSGSRVGGLSGAKHVLKSLTPNARNLFKLLAEHQLEEAAGADKDGSEYQGVEF 273 (326)
T ss_pred EEEEeCCCCCCHHHHhccccchhhhhcccccccccHHHHHHHHHHCCHHHHHHHHHHHHHHHhhccccccCCCCCCCccH
Confidence 9999999999999999998865 44443 32 789999999999999999999999999999 223479999
Q ss_pred HHHHHHHHHHHhhccHHHHHHHhhhhcccceEEEeeCCCCceEEEEeCCHHHH
Q 023087 226 DTLYATSRERFLVSSQVTLNSHLTEFKDHELVKTRRHSDGQDCFYIPLASEAL 278 (287)
Q Consensus 226 ~~L~~~~~e~fi~sse~~lr~~L~EF~DH~li~~~k~~~G~e~l~Ip~~~~~l 278 (287)
++||++|+++||||||++||++|+||+||+||+++|+++|+|+|+||+++++|
T Consensus 274 ~~Ly~~~~e~Fi~sse~~lr~~L~EF~DH~li~~~k~~~G~e~L~IP~~~~~m 326 (326)
T PF04084_consen 274 RDLYNKCREEFIVSSEMALRALLTEFIDHKLIKSKKDADGTEYLWIPFDKEEM 326 (326)
T ss_pred HHHHHHHHHHHhhCCHHHHHHHHHHHHcccceeeEeCCCCCEEEEEecCcCcC
Confidence 99999999999999999999999999999999999999999999999999875
|
ORC is a central component for eukaryotic DNA replication, and binds chromatin at replication origins throughout the cell cycle []. ORC directs DNA replication throughout the genome and is required for its initiation [, , ]. ORC bound at replication origins serves as the foundation for assembly of the pre-replicative complex (pre-RC), which includes Cdc6, Tah11 (aka Cdt1), and the Mcm2-7 complex [, , ]. Pre-RC assembly during G1 is required for replication licensing of chromosomes prior to DNA synthesis during S phase [, , ]. Cell cycle-regulated phosphorylation of Orc2, Orc6, Cdc6, and MCM by the cyclin-dependent protein kinase Cdc28 regulates initiation of DNA replication, including blocking reinitiation in G2/M phase [, , , ]. In yeast, ORC also plays a role in the establishment of silencing at the mating-type loci Hidden MAT Left (HML) and Hidden MAT Right (HMR) [, , ]. ORC participates in the assembly of transcriptionally silent chromatin at HML and HMR by recruiting the Sir1 silencing protein to the HML and HMR silencers [, , ]. Both Orc1 and Orc5 bind ATP, though only Orc1 has ATPase activity []. The binding of ATP by Orc1 is required for ORC binding to DNA and is essential for cell viability []. The ATPase activity of Orc1 is involved in formation of the pre-RC [, , ]. ATP binding by Orc5 is crucial for the stability of ORC as a whole. Only the Orc1-5 subunits are required for origin binding; Orc6 is essential for maintenance of pre-RCs once formed []. Interactions within ORC suggest that Orc2-3-6 may form a core complex []. ORC homologues have been found in various eukaryotes, including fission yeast, insects, amphibians, and humans []. This entry represents subunit 2, which binds the origin of replication. It plays a role in chromosome replication and mating type transcriptional silencing.; GO: 0006260 DNA replication, 0000808 origin recognition complex, 0005634 nucleus |
| >KOG2928 consensus Origin recognition complex, subunit 2 [Replication, recombination and repair] | Back alignment and domain information |
|---|
| >COG5575 ORC2 Origin recognition complex, subunit 2 [DNA replication, recombination, and repair] | Back alignment and domain information |
|---|
| >PRK00411 cdc6 cell division control protein 6; Reviewed | Back alignment and domain information |
|---|
| >TIGR02928 orc1/cdc6 family replication initiation protein | Back alignment and domain information |
|---|
| >COG1474 CDC6 Cdc6-related protein, AAA superfamily ATPase [DNA replication, recombination, and repair / Posttranslational modification, protein turnover, chaperones] | Back alignment and domain information |
|---|
| >PF13730 HTH_36: Helix-turn-helix domain | Back alignment and domain information |
|---|
| >PF13401 AAA_22: AAA domain; PDB: 2QBY_B 1FNN_B 1W5T_A 1W5S_B | Back alignment and domain information |
|---|
| >PF05621 TniB: Bacterial TniB protein; InterPro: IPR008868 This family consists of several bacterial TniB NTP-binding proteins | Back alignment and domain information |
|---|
Homologous Structure Templates
Structure Templates Detected by BLAST 
Original result of BLAST against Protein Data Bank
No homologous structure with e-value below 0.005
Structure Templates Detected by RPS-BLAST 
Original result of RPS-BLAST against PDB70 database
No hit with e-value below 0.005
Structure Templates Detected by HHsearch 
Original result of HHsearch against PDB70 database
ID ![]() | Alignment Graph ![]() | Length ![]() |
Definition ![]() |
Probability ![]() |
| Query | 287 | |||
| 2v1u_A | 387 | Cell division control protein 6 homolog; DNA repli | 97.08 | |
| 2qby_B | 384 | CDC6 homolog 3, cell division control protein 6 ho | 95.07 | |
| 2qby_A | 386 | CDC6 homolog 1, cell division control protein 6 ho | 94.62 | |
| 1fnn_A | 389 | CDC6P, cell division control protein 6; ORC1, AAA | 94.02 | |
| 2fu4_A | 83 | Ferric uptake regulation protein; DNA binding doma | 86.07 | |
| 1w5s_A | 412 | Origin recognition complex subunit 2 ORC2; replica | 82.37 |
| >2v1u_A Cell division control protein 6 homolog; DNA replication, nucleotide-binding, replication, archaea; HET: ADP; 3.10A {Aeropyrum pernix} | Back alignment and structure |
|---|
Probab=97.08 E-value=0.077 Score=48.12 Aligned_cols=255 Identities=17% Similarity=0.155 Sum_probs=153.6
Q ss_pred CCccEEEEecc--chHHHHHHHHHhhcC-------CCcEEEEeccCCCCCHHHHHHHHHHHHHhhccccCCCCCCCCCCC
Q 023087 4 CGFGLLMYGFG--SKKALLEDFASTALT-------EYSVVVINGYLQSINIKQVVITLAEVLWNQCKSKRKTPSGNLPRA 74 (287)
Q Consensus 4 ~GFnlL~YG~G--SKr~lL~~Fa~~~l~-------~~~~vvvnGy~p~~~~k~il~~i~~~l~~~~~~~~~~~~~~~~~~ 74 (287)
.+-++++||-. -|..+++.+++.... +.+++.||+... .+..+++..+...+... .
T Consensus 43 ~~~~vll~G~~G~GKT~l~~~~~~~~~~~~~~~~~~~~~~~i~~~~~-~~~~~~~~~l~~~l~~~-----------~--- 107 (387)
T 2v1u_A 43 KPSNALLYGLTGTGKTAVARLVLRRLEARASSLGVLVKPIYVNARHR-ETPYRVASAIAEAVGVR-----------V--- 107 (387)
T ss_dssp CCCCEEECBCTTSSHHHHHHHHHHHHHHHHHHHTCCEEEEEEETTTS-CSHHHHHHHHHHHHSCC-----------C---
T ss_pred CCCcEEEECCCCCCHHHHHHHHHHHHHHHHhccCCCeEEEEEECCcC-CCHHHHHHHHHHHhCCC-----------C---
Confidence 45689999864 388999998876533 456788998653 46788888887766220 0
Q ss_pred CCCCCCCcHHHHHHHHhcccccCCCceEEEEEEcCCCcCCCChhHHHHHHHHhc-------CCCeEEEEeecCCCCcccc
Q 023087 75 QQPFNSRSMDDLFAFLDGSELKENDYFVCVVIHNIDGPGLRDSETQQHLGRIAF-------CSHIRMIASIDHVNAPLLW 147 (287)
Q Consensus 75 ~~~~~~~~~~~l~~~i~~~~~~~~~~~l~lvIHnIDg~~LR~~~~q~~La~La~-------~~~I~lIaSiDhinaplLW 147 (287)
+....+..++.+.+..... ....+.+|+|-.+|.-.-.. ..|..|..|.. .+++.+|++......+-..
T Consensus 108 --~~~~~~~~~~~~~l~~~l~-~~~~~~vlilDEi~~l~~~~-~~~~~l~~l~~~~~~~~~~~~~~~I~~t~~~~~~~~l 183 (387)
T 2v1u_A 108 --PFTGLSVGEVYERLVKRLS-RLRGIYIIVLDEIDFLPKRP-GGQDLLYRITRINQELGDRVWVSLVGITNSLGFVENL 183 (387)
T ss_dssp --CSSCCCHHHHHHHHHHHHT-TSCSEEEEEEETTTHHHHST-THHHHHHHHHHGGGCC-----CEEEEECSCSTTSSSS
T ss_pred --CCCCCCHHHHHHHHHHHHh-ccCCeEEEEEccHhhhcccC-CCChHHHhHhhchhhcCCCceEEEEEEECCCchHhhh
Confidence 1112234444444433221 24568899999998743211 15677766643 4578888888766433334
Q ss_pred CcccccccccEEEEeCCCCCCccccccc----------------chhh---h---hc---CC------------------
Q 023087 148 DKKMVHTQFNWHWYHVPTFAPYKVEGMF----------------FPLI---L---AH---GS------------------ 184 (287)
Q Consensus 148 d~~~~~~~fnf~~~d~tT~~pY~~E~~~----------------~~~l---~---~~---~~------------------ 184 (287)
+.... .+|+... -.+.||+.|-.. .+.. + .. +.
T Consensus 184 ~~~l~-~r~~~~~---i~l~~l~~~~~~~il~~~~~~~~~~~~~~~~~~~~l~~~~~~~~G~~r~~~~~l~~a~~~a~~~ 259 (387)
T 2v1u_A 184 EPRVK-SSLGEVE---LVFPPYTAPQLRDILETRAEEAFNPGVLDPDVVPLCAALAAREHGDARRALDLLRVAGEIAERR 259 (387)
T ss_dssp CHHHH-TTTTSEE---CCBCCCCHHHHHHHHHHHHHHHBCTTTBCSSHHHHHHHHHHSSSCCHHHHHHHHHHHHHHHHHT
T ss_pred CHHHH-hcCCCeE---EeeCCCCHHHHHHHHHHHHHhhccCCCCCHHHHHHHHHHHHHhccCHHHHHHHHHHHHHHHHHc
Confidence 55555 6776532 346677655210 0000 0 00 10
Q ss_pred --ccch------------hhHHHHHHhhcCHhHHHHHHHHHHHHhcCCCCCCCCHHHHHHHHHHH---H--hhccHHHHH
Q 023087 185 --SAQT------------AKTAAIVLQSLTPNAQSVFKILAEYQLSHPDEEGMPIDTLYATSRER---F--LVSSQVTLN 245 (287)
Q Consensus 185 --~~~~------------~~g~~~VL~SLt~nar~lf~lLa~~QL~~~~~~gv~~~~L~~~~~e~---f--i~sse~~lr 245 (287)
...+ ......++++|++.++.++..++... . ++.++...++|+..++- . -..+...+.
T Consensus 260 ~~~~i~~~~v~~a~~~~~~~~~~~~~~~l~~~~~~~l~a~~~~~--~-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 336 (387)
T 2v1u_A 260 REERVRREHVYSARAEIERDRVSEVVRTLPLHAKLVLLSIMMLE--D-GGRPASTGEIYERYKELTSTLGLEHVTLRRVS 336 (387)
T ss_dssp TCSCBCHHHHHHHHHHHHHHHHHHHHHSSCHHHHHHHHHHHHHS--S-SSCCEEHHHHHHHHHHHHHHTTCCCCCHHHHH
T ss_pred CCCCcCHHHHHHHHHHHhhchHHHHHHcCCHHHHHHHHHHHHHh--c-CCCCCcHHHHHHHHHHHHHhcCCCCCCHHHHH
Confidence 0000 11233467889999999988887653 2 23467788777655441 1 123568999
Q ss_pred HHhhhhcccceEEEeeC---CCC-ceEEEEeCCHHHHHHHHHH
Q 023087 246 SHLTEFKDHELVKTRRH---SDG-QDCFYIPLASEALEKLLSE 284 (287)
Q Consensus 246 ~~L~EF~DH~li~~~k~---~~G-~e~l~Ip~~~~~l~~iLe~ 284 (287)
..|.++.+.++|..+.. ..| ...+.+.++.+++.+.|++
T Consensus 337 ~~l~~L~~~gli~~~~~~~g~~g~~~~~~l~~~~~~i~~~l~~ 379 (387)
T 2v1u_A 337 GIISELDMLGIVKSRVVSRGRYGKTREVSLDADRLAVENALSE 379 (387)
T ss_dssp HHHHHHHHTTSEEEEEEECGGGCEEEEEEECSCHHHHHHHHHH
T ss_pred HHHHHHHhCCCeEEEeecCCCCCceeEEEecCCHHHHHHHHhc
Confidence 99999999999998542 234 3457789999999998875
|
| >2qby_B CDC6 homolog 3, cell division control protein 6 homolog 3; winged-helix domain, helix-turn-helix, AAA+ ATPase domain, protein-DNA complex; HET: DNA SPD ADP; 3.35A {Sulfolobus solfataricus} | Back alignment and structure |
|---|
| >2qby_A CDC6 homolog 1, cell division control protein 6 homolog 1; winged-helix domain, helix-turn-helix, AAA+ ATPase domain, protein-DNA complex; HET: DNA SPD ADP; 3.35A {Sulfolobus solfataricus} | Back alignment and structure |
|---|
| >1fnn_A CDC6P, cell division control protein 6; ORC1, AAA protein, DNA replication initation factor, cell cycle control factor; HET: ADP; 2.00A {Pyrobaculum aerophilum} SCOP: a.4.5.11 c.37.1.20 | Back alignment and structure |
|---|
| >2fu4_A Ferric uptake regulation protein; DNA binding domain, helix-turn-helix, DNA binding protein; 1.80A {Escherichia coli} | Back alignment and structure |
|---|
| >1w5s_A Origin recognition complex subunit 2 ORC2; replication, CDC6, DNA replication initiation, DNA BIND protein, AAA+ ATPase; HET: ADP; 2.4A {Aeropyrum pernix} SCOP: a.4.5.11 c.37.1.20 PDB: 1w5t_A* | Back alignment and structure |
|---|
Homologous Structure Domains
Structure Domains Detected by RPS-BLAST 
Original result of RPS-BLAST against SCOP70(version1.75) database
No hit with e-value below 0.005
Homologous Domains Detected by HHsearch 
Original result of HHsearch against SCOP70(version1.75) database
ID ![]() | Alignment Graph ![]() | Length ![]() |
Definition ![]() |
Probability ![]() |
| Query | 287 | |||
| d1w5sa1 | 110 | CDC6-like protein APE0152, C-terminal domain {Aero | 92.92 | |
| d1fnna1 | 112 | CDC6, C-terminal domain {Archaeon Pyrobaculum aero | 92.56 | |
| d1stza1 | 87 | Heat-inducible transcription repressor HrcA, N-ter | 85.47 | |
| d1jhfa1 | 71 | LexA repressor, N-terminal DNA-binding domain {Esc | 83.22 | |
| d1u2wa1 | 108 | Cadmium efflux system accessory protein CadC {Stap | 81.3 |
| >d1w5sa1 a.4.5.11 (A:300-409) CDC6-like protein APE0152, C-terminal domain {Aeropyrum pernix [TaxId: 56636]} | Back information, alignment and structure |
|---|
class: All alpha proteins fold: DNA/RNA-binding 3-helical bundle superfamily: "Winged helix" DNA-binding domain family: Helicase DNA-binding domain domain: CDC6-like protein APE0152, C-terminal domain species: Aeropyrum pernix [TaxId: 56636]
Probab=92.92 E-value=0.24 Score=36.98 Aligned_cols=89 Identities=17% Similarity=0.245 Sum_probs=61.4
Q ss_pred HHhhcCHhHHHHHHHHHHHHhcCCCCCCCCHHHHHHHHHH----HHhh--ccHHHHHHHhhhhcccceEEEeeCCC----
Q 023087 195 VLQSLTPNAQSVFKILAEYQLSHPDEEGMPIDTLYATSRE----RFLV--SSQVTLNSHLTEFKDHELVKTRRHSD---- 264 (287)
Q Consensus 195 VL~SLt~nar~lf~lLa~~QL~~~~~~gv~~~~L~~~~~e----~fi~--sse~~lr~~L~EF~DH~li~~~k~~~---- 264 (287)
.+++||..++-+...++..-... ...+...++|+.=.+ ++=+ -+-..|..+|+|+-+-++|..+....
T Consensus 3 ~l~~L~~H~~lvL~~I~~~~~~~--~~~~~tGei~~~Y~ev~c~~~~~~P~~~t~~~~~l~~Le~lGiI~~r~~~~G~rG 80 (110)
T d1w5sa1 3 ELEALSIHELIILRLIAEATLGG--MEWINAGLLRQRYEDASLTMYNVKPRGYTQYHIYLKHLTSLGLVDAKPSGRGMRG 80 (110)
T ss_dssp SSSSSCHHHHHHHHHHHHHHHTT--CSSBCHHHHHHHHHHHHHHHSCCCCCCHHHHHHHHHHHHHTTSEEEECC------
T ss_pred hhhccCHhHHHHHHHHHHHHhcC--CCCCchHHHHHHHHHHHHHHhCCCCccHHHHHHHHHHHHHcCCeEEEeccCCCCC
Confidence 36899999999999988843222 244555444443332 2222 48999999999999999998764322
Q ss_pred CceEEEEe--CCHHHHHHHHHHh
Q 023087 265 GQDCFYIP--LASEALEKLLSEI 285 (287)
Q Consensus 265 G~e~l~Ip--~~~~~l~~iLe~l 285 (287)
.+..+++| .+.+.++++++++
T Consensus 81 rt~~isl~~~~p~d~~~~~~~~~ 103 (110)
T d1w5sa1 81 RTTLFRLAPHLPADRLIEVVDNI 103 (110)
T ss_dssp -CCEEEECTTSCHHHHHHHHHHH
T ss_pred CeeEEeeCCCCchHHHHHHHHHH
Confidence 24677766 6788888888876
|
| >d1fnna1 a.4.5.11 (A:277-388) CDC6, C-terminal domain {Archaeon Pyrobaculum aerophilum [TaxId: 13773]} | Back information, alignment and structure |
|---|
| >d1stza1 a.4.5.51 (A:14-100) Heat-inducible transcription repressor HrcA, N-terminal domain {Thermotoga maritima [TaxId: 2336]} | Back information, alignment and structure |
|---|
| >d1jhfa1 a.4.5.2 (A:2-72) LexA repressor, N-terminal DNA-binding domain {Escherichia coli [TaxId: 562]} | Back information, alignment and structure |
|---|
| >d1u2wa1 a.4.5.5 (A:12-119) Cadmium efflux system accessory protein CadC {Staphylococcus aureus [TaxId: 1280]} | Back information, alignment and structure |
|---|