Q8WWL7 (CCNB3_HUMAN) Reviewed, UniProtKB/Swiss-Prot
Last modified
May 29, 2013.
Version 101.
History...
Names·Attributes·General annotation·Ontologies·Interactions·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order
Names·Attributes·General annotation·Ontologies·Interactions·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize orderNames and origin
| Protein names | Recommended name: G2/mitotic-specific cyclin-B3 | ||||
| Gene names |
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| Organism | Homo sapiens (Human) [Reference proteome] | ||||
| Taxonomic identifier | 9606 [NCBI] | ||||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo![]() |
Protein attributes
| Sequence length | 1395 AA. |
| Sequence status | Complete. |
| Protein existence | Evidence at protein level |
General annotation (Comments)
| Function | Cyclins are positive regulatory subunits of the cyclin-dependent kinases (CDKs), and thereby play an essential role in the control of the cell cycle, notably via their destruction during cell division. Its tissue specificity suggest that it may be required during early meiotic prophase I. Ref.1 |
| Subunit structure | Interacts with CDK2 kinase. Ref.1 |
| Subcellular location | |
| Tissue specificity | Testis specific. In testis, it is expressed in developing germ cells, but not in Leydig cells. Weakly or not expressed in other tissues. Ref.1 Ref.2 |
| Domain | The N-terminal destruction box (D-box) probably acts as a recognition signal for degradation via the ubiquitin-proteasome pathway By similarity. Ref.1 |
| Post-translational modification | Ubiquitinated Probable. Ubiquitination leads to its degradation during anaphase entry, after degradation of CCNB1. |
| Sequence similarities | Belongs to the cyclin family. Cyclin AB subfamily. |
Ontologies
| Keywords | |
|---|---|
| Biological process | Cell cycle Cell division Meiosis |
| Cellular component | Nucleus |
| Coding sequence diversity | Alternative splicing Polymorphism |
| Molecular function | Cyclin |
| PTM | Ubl conjugation |
| Technical term | Complete proteome Reference proteome |
| Gene Ontology (GO) | |
| Biological_process | cell division Inferred from electronic annotation. Source: UniProtKB-KW meiosisInferred from electronic annotation. Source: UniProtKB-KW regulation of G2/M transition of mitotic cell cycleInferred from electronic annotation. Source: InterPro regulation of cyclin-dependent protein serine/threonine kinase activityInferred from electronic annotation. Source: InterPro |
| Cellular_component | nucleus Inferred from direct assay. Source: HPA |
| Complete GO annotation... | |
Binary interactions
With | Entry | #Exp. | IntAct | Notes |
|---|---|---|---|---|
| CDK2 | A8UKE6 | 2 | EBI-767764,EBI-767796 | From a different organism. |
Alternative products
| This entry describes 3 isoforms produced by alternative splicing. [Align] [Select] | ||||||
| Isoform 1 (identifier: Q8WWL7-1) This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry. | ||||||
| Isoform 2 (identifier: Q8WWL7-2) Also known as: Variant 1; The sequence of this isoform differs from the canonical sequence as follows: 69-1172: Missing. | ||||||
| Isoform 3 (identifier: Q8WWL7-3) Also known as: Variant 2; The sequence of this isoform differs from the canonical sequence as follows: 112-1395: Missing. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 1395 | 1395 | G2/mitotic-specific cyclin-B3 | PRO_0000080373 | |||||
Regions | |||||||||
| Motif | 60 – 68 | 9 | D-box | ||||||
Natural variations | |||||||||
| Alternative sequence | 69 – 1172 | 1104 | Missing in isoform 2. | VSP_010514 | |||||
| Alternative sequence | 112 – 1395 | 1284 | Missing in isoform 3. | VSP_010515 | |||||
| Natural variant | 597 | 1 | K → T in a colorectal cancer sample; somatic mutation. Ref.6 | VAR_036580 | |||||
| Natural variant | 1001 | 1 | G → R. Corresponds to variant rs6614336 [ dbSNP | Ensembl ]. | VAR_047027 | |||||
Experimental info | |||||||||
| Mutagenesis | 60 | 1 | R → A in cycB3XA; prevents its destruction after completion of anaphase; when associated with A-63 and A-68. | ||||||
| Mutagenesis | 63 | 1 | F → A in cycB3XA; prevents its destruction after completion of anaphase; when associated with A-60 and A-68. | ||||||
| Mutagenesis | 68 | 1 | N → A in cycB3XA; prevents its destruction after completion of anaphase; when associated with A-60 and A-63. | ||||||
| Sequence conflict | 295 | 1 | K → R in CAC40024. Ref.2 | ||||||
| Sequence conflict | 331 | 1 | S → F in CAC94915. Ref.1 | ||||||
| Sequence conflict | 396 | 1 | S → P in CAC40024. Ref.2 | ||||||
| Sequence conflict | 493 | 1 | R → K in CAC40024. Ref.2 | ||||||
| Sequence conflict | 573 | 1 | N → S in CAC40024. Ref.2 | ||||||
| Sequence conflict | 597 | 1 | K → E in CAC40024. Ref.2 | ||||||
| Sequence conflict | 774 | 1 | E → K in CAC94915. Ref.1 | ||||||
Sequences
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References
Cross-references
Entry information
| Entry name | CCNB3_HUMAN | ||||||||
| Accession | Primary (citable) accession number: Q8WWL7 Secondary accession number(s): B1AQI5 Q9NT38 | ||||||||
| Entry history |
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| Entry status | 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. | ||||||||
Relevant documents
| Human chromosome X Human chromosome X: 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 |
| SIMILARITY comments Index of protein domains and families |

Clusters with
