UniProtKB - Q13416 (ORC2_HUMAN)
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Protein
Origin recognition complex subunit 2
Gene
ORC2
Organism
Homo sapiens (Human)
Status
Functioni
Component of the origin recognition complex (ORC) that binds origins of replication. DNA-binding is ATP-dependent. The specific DNA sequences that define origins of replication have not been identified yet. ORC is required to assemble the pre-replication complex necessary to initiate DNA replication. Binds histone H3 and H4 trimethylation marks H3K9me3, H3K20me3 and H4K27me3. Stabilizes LRWD1, by protecting it from ubiquitin-mediated proteasomal degradation. Also stabilizes ORC3.2 Publications
GO - Molecular functioni
- DNA replication origin binding Source: GO_Central
GO - Biological processi
- DNA replication Source: Reactome
- DNA replication initiation Source: ProtInc
- G1/S transition of mitotic cell cycle Source: Reactome
- negative regulation of transcription from RNA polymerase II promoter Source: ProtInc
Keywordsi
| Biological process | DNA replication |
Enzyme and pathway databases
| Reactomei | R-HSA-113507. E2F-enabled inhibition of pre-replication complex formation. R-HSA-176187. Activation of ATR in response to replication stress. R-HSA-68616. Assembly of the ORC complex at the origin of replication. R-HSA-68689. CDC6 association with the ORC:origin complex. R-HSA-68827. CDT1 association with the CDC6:ORC:origin complex. R-HSA-68867. Assembly of the pre-replicative complex. R-HSA-68949. Orc1 removal from chromatin. R-HSA-68962. Activation of the pre-replicative complex. R-HSA-69298. Association of licensing factors with the pre-replicative complex. R-HSA-69300. Removal of licensing factors from origins. |
| SIGNORi | Q13416. |
Names & Taxonomyi
| Protein namesi | Recommended name: Origin recognition complex subunit 2 |
| Gene namesi | Name:ORC2 Synonyms:ORC2L |
| Organismi | Homo sapiens (Human) |
| Taxonomic identifieri | 9606 [NCBI] |
| Taxonomic lineagei | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo |
| Proteomesi |
|
Organism-specific databases
| HGNCi | HGNC:8488. ORC2. |
Subcellular locationi
GO - Cellular componenti
- centrosome Source: CACAO
- condensed chromosome inner kinetochore Source: Ensembl
- heterochromatin Source: CACAO
- membrane Source: UniProtKB
- nuclear chromosome, telomeric region Source: BHF-UCL
- nuclear origin of replication recognition complex Source: UniProtKB
- nucleoplasm Source: HPA
- nucleus Source: UniProtKB
- origin recognition complex Source: UniProtKB
Keywords - Cellular componenti
NucleusPathology & Biotechi
Organism-specific databases
| DisGeNETi | 4999. |
| OpenTargetsi | ENSG00000115942. |
| PharmGKBi | PA32809. |
Polymorphism and mutation databases
| BioMutai | ORC2. |
| DMDMi | 8488999. |
PTM / Processingi
Molecule processing
| Feature key | Position(s) | DescriptionActions | Graphical view | Length |
|---|---|---|---|---|
| ChainiPRO_0000127075 | 1 – 577 | Origin recognition complex subunit 2Add BLAST | 577 |
Amino acid modifications
| Feature key | Position(s) | DescriptionActions | Graphical view | Length |
|---|---|---|---|---|
| Modified residuei | 116 | PhosphothreonineCombined sources | 1 | |
| Modified residuei | 122 | PhosphoserineCombined sources | 1 | |
| Modified residuei | 138 | PhosphoserineCombined sources | 1 | |
| Modified residuei | 226 | PhosphothreonineCombined sources | 1 | |
| Modified residuei | 248 | PhosphoserineCombined sources | 1 | |
| Modified residuei | 280 | PhosphoserineCombined sources | 1 |
Keywords - PTMi
PhosphoproteinProteomic databases
| EPDi | Q13416. |
| MaxQBi | Q13416. |
| PaxDbi | Q13416. |
| PeptideAtlasi | Q13416. |
| PRIDEi | Q13416. |
PTM databases
| iPTMneti | Q13416. |
| PhosphoSitePlusi | Q13416. |
Expressioni
Gene expression databases
| Bgeei | ENSG00000115942. |
| CleanExi | HS_ORC2L. |
| ExpressionAtlasi | Q13416. baseline and differential. |
| Genevisiblei | Q13416. HS. |
Organism-specific databases
| HPAi | CAB003693. HPA073881. |
Interactioni
Subunit structurei
Component of ORC, a complex composed of at least 6 subunits: ORC1, ORC2, ORC3, ORC4, ORC5 and ORC6. ORC is regulated in a cell-cycle dependent manner. It is sequentially assembled at the exit from anaphase of mitosis and disassembled as cells enter S phase (PubMed:12909626, PubMed:17716973). Interacts with DBF4 (By similarity). Interacts with MCM10 (PubMed:11095689). Interacts with LRWD1 throughout the cell cycle; this interaction, wich occurs only with non-ubiquitinated form of LRWD1, prevents LRWD1 ubiquitination and hence stabilizes the protein (PubMed:22645314). Interacts with POLQ (PubMed:24989122).By similarity5 Publications
Binary interactionsi
Protein-protein interaction databases
| BioGridi | 111041. 60 interactors. |
| DIPi | DIP-29689N. |
| IntActi | Q13416. 40 interactors. |
| MINTi | MINT-1201828. |
| STRINGi | 9606.ENSP00000234296. |
Structurei
Secondary structure
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details| Feature key | Position(s) | DescriptionActions | Graphical view | Length |
|---|---|---|---|---|
| Helixi | 474 – 481 | Combined sources | 8 | |
| Helixi | 486 – 501 | Combined sources | 16 | |
| Turni | 502 – 504 | Combined sources | 3 | |
| Helixi | 513 – 522 | Combined sources | 10 | |
| Helixi | 529 – 541 | Combined sources | 13 | |
| Beta strandi | 546 – 549 | Combined sources | 4 | |
| Beta strandi | 555 – 558 | Combined sources | 4 | |
| Helixi | 563 – 572 | Combined sources | 10 |
3D structure databases
| Select the link destinations: PDBei RCSB PDBi PDBji Links Updated | PDB entry | Method | Resolution (Å) | Chain | Positions | PDBsum |
| 5C8H | X-ray | 2.01 | A | 458-577 | [»] | |
| 5UJ8 | X-ray | 6.00 | E/F/G/H | 231-577 | [»] | |
| 5UJM | electron microscopy | 18.00 | B | 231-577 | [»] | |
| ProteinModelPortali | Q13416. | |||||
| SMRi | Q13416. | |||||
| ModBasei | Search... | |||||
| MobiDBi | Search... | |||||
Family & Domainsi
Domains and Repeats
| Feature key | Position(s) | DescriptionActions | Graphical view | Length |
|---|---|---|---|---|
| Repeati | 1 – 100 | Involved in LRWD1-bindingAdd BLAST | 100 |
Sequence similaritiesi
Belongs to the ORC2 family.Curated
Phylogenomic databases
| eggNOGi | KOG2928. Eukaryota. COG5575. LUCA. |
| GeneTreei | ENSGT00390000015228. |
| HOGENOMi | HOG000045588. |
| HOVERGENi | HBG007874. |
| InParanoidi | Q13416. |
| KOi | K02604. |
| OMAi | ETAFENS. |
| OrthoDBi | EOG091G0H5Q. |
| PhylomeDBi | Q13416. |
| TreeFami | TF101092. |
Family and domain databases
| InterProi | View protein in InterPro IPR007220. ORC2. |
| PANTHERi | PTHR14052. PTHR14052. 1 hit. |
| Pfami | View protein in Pfam PF04084. ORC2. 1 hit. |
Sequencei
Sequence statusi: Complete.
Q13416-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MSKPELKEDK MLEVHFVGDD DVLNHILDRE GGAKLKKERA QLLVNPKKII
60 70 80 90 100
KKPEYDLEED DQEVLKDQNY VEIMGRDVQE SLKNGSATGG GNKVYSFQNR
110 120 130 140 150
KHSEKMAKLA SELAKTPQKS VSFSLKNDPE ITINVPQSSK GHSASDKVQP
160 170 180 190 200
KNNDKSEFLS TAPRSLRKRL IVPRSHSDSE SEYSASNSED DEGVAQEHEE
210 220 230 240 250
DTNAVIFSQK IQAQNRVVSA PVGKETPSKR MKRDKTSDLV EEYFEAHSSS
260 270 280 290 300
KVLTSDRTLQ KLKRAKLDQQ TLRNLLSKVS PSFSAELKQL NQQYEKLFHK
310 320 330 340 350
WMLQLHLGFN IVLYGLGSKR DLLERFRTTM LQDSIHVVIN GFFPGISVKS
360 370 380 390 400
VLNSITEEVL DHMGTFRSIL DQLDWIVNKF KEDSSLELFL LIHNLDSQML
410 420 430 440 450
RGEKSQQIIG QLSSLHNIYL IASIDHLNAP LMWDHAKQSL FNWLWYETTT
460 470 480 490 500
YSPYTEETSY ENSLLVKQSG SLPLSSLTHV LRSLTPNARG IFRLLIKYQL
510 520 530 540 550
DNQDNPSYIG LSFQDFYQQC REAFLVNSDL TLRAQLTEFR DHKLIRTKKG
560 570
TDGVEYLLIP VDNGTLTDFL EKEEEEA
Experimental Info
| Feature key | Position(s) | DescriptionActions | Graphical view | Length |
|---|---|---|---|---|
| Sequence conflicti | 131 | I → V in AAB33970 (PubMed:8808289).Curated | 1 | |
| Sequence conflicti | 236 | T → L in AAB33970 (PubMed:8808289).Curated | 1 | |
| Sequence conflicti | 392 | I → M in AAB33970 (PubMed:8808289).Curated | 1 |
Natural variant
| Feature key | Position(s) | DescriptionActions | Graphical view | Length |
|---|---|---|---|---|
| Natural variantiVAR_014515 | 106 | M → K1 PublicationCorresponds to variant dbSNP:rs2307361Ensembl. | 1 | |
| Natural variantiVAR_021276 | 521 | R → Q1 PublicationCorresponds to variant dbSNP:rs16835624Ensembl. | 1 |
Sequence databases
| Select the link destinations: EMBLi GenBanki DDBJi Links Updated | U40268 mRNA. Translation: AAC50326.2. U27459 mRNA. Translation: AAB33970.1. AY652588 Genomic DNA. Translation: AAT46690.1. AC005037 Genomic DNA. Translation: AAY14725.1. CH471063 Genomic DNA. Translation: EAW70228.1. BC014834 mRNA. Translation: AAH14834.1. |
| CCDSi | CCDS2334.1. |
| RefSeqi | NP_006181.1. NM_006190.4. XP_006712618.1. XM_006712555.3. |
| UniGenei | Hs.444870. |
Genome annotation databases
| Ensembli | ENST00000234296; ENSP00000234296; ENSG00000115942. |
| GeneIDi | 4999. |
| KEGGi | hsa:4999. |
| UCSCi | uc002uwr.4. human. |
Keywords - Coding sequence diversityi
PolymorphismSimilar proteinsi
Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:| 100% | UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry. |
| 90% | UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence). |
| 50% | UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster. |
Entry informationi
| Entry namei | ORC2_HUMAN | |
| Accessioni | Q13416Primary (citable) accession number: Q13416 Secondary accession number(s): Q13204, Q53TX5 | |
| Entry historyi | Integrated into UniProtKB/Swiss-Prot: | November 1, 1997 |
| Last sequence update: | May 30, 2000 | |
| Last modified: | July 5, 2017 | |
| This is version 145 of the entry and version 2 of the sequence. See complete history. | ||
| Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
| Annotation program | Chordata Protein Annotation Program | |
| Disclaimer | Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. | |
Miscellaneousi
Keywords - Technical termi
3D-structure, Complete proteome, Reference proteomeDocuments
- Human chromosome 2
Human chromosome 2: entries, gene names and cross-references to MIM - Human entries with polymorphisms or disease mutations
List of human entries with polymorphisms or disease mutations - Human polymorphisms and disease mutations
Index of human polymorphisms and disease mutations - MIM cross-references
Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot - PDB cross-references
Index of Protein Data Bank (PDB) cross-references - SIMILARITY comments
Index of protein domains and families
