Reviewed,
UniProtKB/Swiss-Prot Q12802 (AKP13_HUMAN)
Last modified
July 22, 2008.
Version 66.
History...
Clusters with 100%,
90%,
50% identity |
Documents (7) |
Third-party data |
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Names and origin
| Protein names | Recommended name: A-kinase anchor protein 13 Short name=AKAP 13 Alternative name(s): Protein kinase A-anchoring protein 13 Breast cancer nuclear receptor-binding auxiliary protein Human thyroid-anchoring protein 31 Guanine nucleotide exchange factor Lbc AKAP-Lbc P47 Lymphoid blast crisis oncogene Short name=LBC oncogene Non-oncogenic Rho GTPase-specific GTP exchange factor | ||||
| Gene names |
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| Organism | Homo sapiens (Human) | ||||
| Taxonomic identifier | 9606 [NCBI] | ||||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo |
Protein attributes
| Sequence length | 2813 AA. |
| Sequence status | Complete. |
| Sequence processing | The displayed sequence is not processed. |
| Protein existence | Evidence at protein level. |
General annotation (Comments)
| Function | Anchors cAMP-dependent protein kinase (PKA) and acts as an adapter protein to selectively couple G alpha-13 and Rho. Augments gene activation by the estrogen receptor in an element-specific and ligand-dependent manner. Activates estrogen receptor beta by a p38 MAPK-dependent pathway. Isoform 6 stimulates exchange activity on Rho proteins in vitro, but not on CDC42, Ras or Rac and may bind calcium ions. |
| Subunit structure | Binds cAMP-dependent protein kinase (PKA) and to the RII-alpha regulatory subunit of PKA. Interacts with ESR1, ESR2, THRA, PPARA, RHOA and NME2. |
| Subcellular location | Isoform 3: Cytoplasm. Nucleus. Isoform 2: Cytoplasm. Isoform 6: Cytoplasm. Isoform 7: Membrane. |
| Tissue specificity | Isoform 3 and isoform 6 are found in hematopoietic cells, skeletal muscle, lung, heart, estrogen-responsive reproductive tissues, including breast ductal epithelium. Also found in testis and breast cancer cell lines. Isoform 6 is not found in brain, placenta, liver, pancreas or kidney. Isoform 7 is expressed in myeloid and lymphoid lineages, a variety of epithelial tissues and skeletal muscle. Isoform 2 is predominantly found in the heart and at lower levels in the lung, placenta, kidney, pancreas, skeletal muscle and liver. |
| Domain | Both the DH and PH domains are required for transforming activity. |
| Sequence similarities | Contains 1 DH (DBL-homology) domain. Contains 1 PH domain. Contains 1 phorbol-ester/DAG-type zinc finger. |
| Sequence caution | The sequence AAD21311.1 differs from that shown. Reason: Frameshift at positions 2614 and 2647. The sequence AAL40923.1 differs from that shown. Reason: Frameshift at positions 2614 and 2647. |
Ontologies
Keywords | |
|---|---|
| Cellular component | Cytoplasm Membrane Nucleus |
| Coding sequence diversity | Alternative splicing Polymorphism |
| Disease | Proto-oncogene |
| Domain | Coiled coil Phorbol-ester binding Zinc-finger |
| Ligand | Metal-binding Zinc |
| Molecular function | Guanine-nucleotide releasing factor |
| PTM | Phosphoprotein |
| Technical term | 3D-structure |
Gene Ontology (GO) | |
| Cellular component | membrane fraction Ref.3 Traceable author statement. Source: ProtInc |
| Molecular function | cAMP-dependent protein kinase activity Ref.9 Non-traceable author statement. Source: UniProtKB protein bindingInferred from physical interaction. Source: IntAct signal transducer activity Ref.1Traceable author statement. Source: ProtInc |
| Complete GO annotation... | |
Binary interactions
With | Entry | #Exp. | IntAct | Notes |
|---|---|---|---|---|
| BAK1 | Q16611 | 1 | EBI-1373806,EBI-519866 | |
| TGM2 | P21980 | 3 | EBI-1373806,EBI-727668 | |
| YWHAB | P31946 | 1 | EBI-1373806,EBI-359815 |
Alternative products
| This entry describes 7 isoforms produced by alternative splicing. [Align] [Select] | |||||
| Isoform 1 (identifier: Q12802-1) 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: Q12802-2) The sequence of this isoform differs from the canonical sequence as follows: 1583-1598: SMRVLGDVVRRPPIHR → MSWCPSGVQYSAGLSADFNY | |||||
| Isoform 3 (identifier: Q12802-3) The sequence of this isoform differs from the canonical sequence as follows: 1-1384: Missing. 1385-1387: TQA → MLY | |||||
| Isoform 4 (identifier: Q12802-4) The sequence of this isoform differs from the canonical sequence as follows: 1581-1598: Missing. 1950-1951: Missing. | |||||
| Isoform 5 (identifier: Q12802-5) The sequence of this isoform differs from the canonical sequence as follows: 160-179: DAGPRETLMHFAVRLGLLRL → GENLYDLQTHFKFVIFLLFF 180-2813: Missing. | |||||
| Isoform 6 (identifier: Q12802-6) Also known as: LBC; The sequence of this isoform differs from the canonical sequence as follows: 1-1918: Missing. 1950-1951: Missing. 2336-2344: NRDEDEGIP → SGNGWRCFN 2345-2813: Missing. | |||||
| Isoform 7 (identifier: Q12802-7) The sequence of this isoform differs from the canonical sequence as follows: 1-1918: Missing. 1950-1951: Missing. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | ||||
Molecule processing | ||||||||
|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 2813 | 2813 | A-kinase anchor protein 13 | |||||
Regions | ||||||||
| Domain | 1994 – 2191 | 198 | DH | |||||
| Domain | 2231 – 2333 | 103 | PH | |||||
| Zinc finger | 1791 – 1838 | 48 | Phorbol-ester/DAG-type | |||||
| Region | 494 – 516 | 23 | RII-binding | |||||
| Region | 1919 – 2813 | 895 | Interaction with ESR1 | |||||
| Coiled coil | 1758 – 1790 | 33 | Potential | |||||
| Coiled coil | 2345 – 2381 | 37 | Potential | |||||
| Coiled coil | 2568 – 2683 | 116 | Potential | |||||
| Compositional bias | 1471 – 1474 | 4 | Poly-Ser | |||||
| Compositional bias | 1534 – 1537 | 4 | Poly-Glu | |||||
| Compositional bias | 2778 – 2790 | 13 | Poly-Lys | |||||
Amino acid modifications | ||||||||
| Modified residue | 983 | 1 | Phosphoserine | |||||
| Modified residue | 1929 | 1 | Phosphoserine | |||||
| Modified residue | 1932 | 1 | Phosphoserine | |||||
| Modified residue | 2728 | 1 | Phosphoserine | |||||
Natural variations | ||||||||
| Alternative sequence | 1 – 1918 | 1918 | Missing in isoform 6 and isoform 7. | |||||
| Alternative sequence | 1 – 1384 | 1384 | Missing in isoform 3. | |||||
| Alternative sequence | 160 – 179 | 20 | DAGPR…GLLRL → GENLYDLQTHFKFVIFLLFF in isoform 5. | |||||
| Alternative sequence | 180 – 2813 | 2634 | Missing in isoform 5. | |||||
| Alternative sequence | 1385 – 1387 | 3 | TQA → MLY in isoform 3. | |||||
| Alternative sequence | 1581 – 1598 | 18 | Missing in isoform 4. | |||||
| Alternative sequence | 1583 – 1598 | 16 | SMRVL…PPIHR → MSWCPSGVQYSAGLSADFNY in isoform 2. | |||||
| Alternative sequence | 1950 – 1951 | 2 | Missing in isoform 4, isoform 6 and isoform 7. | |||||
| Alternative sequence | 2336 – 2344 | 9 | NRDEDEGIP → SGNGWRCFN in isoform 6. | |||||
| Alternative sequence | 2345 – 2813 | 469 | Missing in isoform 6. | |||||
| Natural variant | 452 | 1 | M → T: dbSNP rs2061821. | |||||
| Natural variant | 494 | 1 | W → R: dbSNP rs2061822. | |||||
| Natural variant | 574 | 1 | R → C: dbSNP rs2061824. | |||||
| Natural variant | 624 | 1 | G → V: dbSNP rs745191. | |||||
| Natural variant | 689 | 1 | E → K: dbSNP rs7177107. | |||||
| Natural variant | 845 | 1 | V → A: dbSNP rs4075256. | |||||
| Natural variant | 897 | 1 | V → M: dbSNP rs4075254. | |||||
| Natural variant | 1062 | 1 | P → A: dbSNP rs4843074. | |||||
| Natural variant | 1086 | 1 | D → N: dbSNP rs4843075. | |||||
| Natural variant | 1216 | 1 | M → T: dbSNP rs7162168. | |||||
| Natural variant | 2457 | 1 | G → S: dbSNP rs2241268. | |||||
| Natural variant | 2801 | 1 | A → T: dbSNP rs2614668. | |||||
Experimental info | ||||||||
| Mutagenesis | 1251 | 1 | A → P: Loss of PKA anchoring; when associated with P-1260 | |||||
| Mutagenesis | 1260 | 1 | I → P: Loss of PKA anchoring; when associated with P-1251 | |||||
| Mutagenesis | 1265 | 1 | A → P: Abolishes RII-binding | |||||
| Mutagenesis | 2153 | 1 | Y → F: Loss of interaction with RHOA | |||||
| Sequence conflict | 191 | 1 | G → R in AAL40923. Ref.5 | |||||
| Sequence conflict | 354 | 1 | C → R in AAL40923. Ref.5 | |||||
| Sequence conflict | 609 | 1 | A → V in AAL40923. Ref.5 | |||||
| Sequence conflict | 614 | 1 | A → T in AAL40923. Ref.5 | |||||
| Sequence conflict | 618 | 1 | S → P in AAL40923. Ref.5 | |||||
| Sequence conflict | 619 | 1 | D → A in AAL11723. Ref.6 | |||||
| Sequence conflict | 755 | 1 | M → S in AAA58670. Ref.9 | |||||
| Sequence conflict | 1547 | 1 | N → H in BAD92651. Ref.10 | |||||
| Sequence conflict | 2035 | 1 | V → D in AAD21311. Ref.2 | |||||
| Sequence conflict | 2488 | 1 | D → G in AAD21311. Ref.2 | |||||
| Sequence conflict | 2667 – 2668 | 2 | QL → HV in AAD21311. Ref.2 | |||||
| Sequence conflict | 2667 – 2668 | 2 | QL → HV in BAB62913. Ref.7 | |||||
Sequences
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Clusters with