Reviewed,
UniProtKB/Swiss-Prot Q8IN81 (FRU_DROME)
Last modified
July 22, 2008.
Version 59.
History...
Clusters with 100%,
90%,
50% identity |
Documents (4) |
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Names and origin
| Protein names | Recommended name: Sex determination protein fruitless | ||||||
| Gene names |
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| Organism | Drosophila melanogaster (Fruit fly) [Complete proteome] | ||||||
| Taxonomic identifier | 7227 [NCBI] | ||||||
| Taxonomic lineage | Eukaryota › Metazoa › Arthropoda › Hexapoda › Insecta › Pterygota › Neoptera › Endopterygota › Diptera › Brachycera › Muscomorpha › Ephydroidea › Drosophilidae › Drosophila › Sophophora |
Protein attributes
| Sequence length | 955 AA. |
| Sequence status | Complete. |
| Sequence processing | The displayed sequence is not processed. |
| Protein existence | Evidence at protein level. |
General annotation (Comments)
| Function | Probably acts as a transcriptional regulator. Part of the somatic sex determination hierarchy; sex determination genes transformer (tra) and transformer-2 (tra-2) switch fru splicing from the male-specific pattern to the female-specific pattern through activation of the female-specific fru 5'-splice site. Vital for the development of males and females. Controls the development of the male specific abdominal muscle of Lawrence. Plays a role in male courtship behavior and sexual orientation. Enhances male-specific expression of takeout in brain-associated fat body. |
| Subcellular location | NucleusPotential. |
| Tissue specificity | Expressed in parts of the adult male brain associated with the courtship song and steps of the male courtship. Also expressed in the larval and pupal male mushroom body and optic lobe. Expressed in pupal female optic lobe. |
| Miscellaneous | Mutant males exhibit bisexual behavior; they court females but are behaviorally sterile so fail to mate and they exhibit vigorous courtship with other fru mutant males. |
| Sequence similarities | Contains 1 BTB (POZ) domain. Contains 1 C2H2-type zinc finger. |
Ontologies
Alternative products
| This entry describes 10 isoforms produced by alternative splicing. [Align] [Select] Notes: Sex specific splicing is controlled by tra and tra-2. Sex-specific repression of the translation of fru mRNA might be mediated by the binding of Tra to the fru mRNA in females. | ||||||||
| Isoform Male-A (identifier: Q8IN81-1) Also known as: E; 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 Female-A (identifier: Q8IN81-4) Also known as: C; The sequence of this isoform differs from the canonical sequence as follows: 1-101: Missing. | ||||||||
| Isoform Female-B (identifier: Q8IN81-7) Also known as: F; The sequence of this isoform differs from the canonical sequence as follows: 1-101: Missing. 617-789: RVKCFNIKHD...YHGHANHQLH → SSARHHLSTP...DRLLKLNSSI 790-955: Missing. | ||||||||
Sequence annotation (Features) | ||||||||
|---|---|---|---|---|---|---|---|---|
| Feature key | Position(s) | Length | Description | Graphical view | ||||
| Sequence conflict | 650 | 1 | T → A in AAG28589. Ref.3 | |||||
| Isoform Female-E (identifier: Q8IN81-10) Also known as: H; The sequence of this isoform differs from the canonical sequence as follows: 1-101: Missing. 617-796: RVKCFNIKHD...QLHQHPPSAT → SKAWHMRLTF...QQQQHNATSE 797-955: Missing. | ||||||||
| Isoform Female-I (identifier: Q8IN81-3) The sequence of this isoform differs from the canonical sequence as follows: 1-101: Missing. 324-336: Missing. 617-789: RVKCFNIKHD...YHGHANHQLH → SSARHHLSTP...DRLLKLNSSI 790-955: Missing. | ||||||||
| Isoform Male-B (identifier: Q8IN81-6) Also known as: B; The sequence of this isoform differs from the canonical sequence as follows: 617-789: RVKCFNIKHD...YHGHANHQLH → SSARHHLSTP...DRLLKLNSSI 790-955: Missing. | ||||||||
| Isoform Male-E (identifier: Q8IN81-12) Also known as: G; The sequence of this isoform differs from the canonical sequence as follows: 617-796: RVKCFNIKHD...QLHQHPPSAT → SKAWHMRLTF...QQQQHNATSE 797-955: Missing. | ||||||||
| Isoform Male-I (identifier: Q8IN81-2) The sequence of this isoform differs from the canonical sequence as follows: 324-336: Missing. 617-789: RVKCFNIKHD...YHGHANHQLH → SSARHHLSTP...DRLLKLNSSI 790-955: Missing. | ||||||||
| Isoform Type-C (identifier: Q8IN81-8) Also known as: D; The sequence of this isoform differs from the canonical sequence as follows: 1-101: Missing. 572-766: SAALKLHAED...PPVANNQAYL → VKKSEAFLGS...ITINVGKNSA 767-955: Missing. | ||||||||
Sequence annotation (Features) | ||||||||
| Feature key | Position(s) | Length | Description | Graphical view | ||||
| Sequence conflict | 539 | 1 | S → P in AAG28590. Ref.3 | |||||
| Sequence conflict | 617 | 1 | H → R in AAG28590. Ref.3 | |||||
| Isoform Type-D (identifier: Q8IN81-9) Also known as: A; The sequence of this isoform differs from the canonical sequence as follows: 1-101: Missing. 617-617: R → E 618-955: Missing. | ||||||||
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | ||||
Molecule processing | ||||||||
|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 955 | 955 | Sex determination protein fruitless | |||||
Regions | ||||||||
| Domain | 131 – 196 | 66 | BTB | |||||
| Zinc finger | 918 – 941 | 24 | C2H2-type | |||||
| Compositional bias | 34 – 56 | 23 | His-rich | |||||
| Compositional bias | 77 – 93 | 17 | Pro-rich | |||||
| Compositional bias | 292 – 357 | 66 | Ala-rich | |||||
| Compositional bias | 386 – 426 | 41 | Asn-rich | |||||
| Compositional bias | 799 – 870 | 72 | Ala/Ser-rich | |||||
Natural variations | ||||||||
| Alternative sequence | 1 – 101 | 101 | Missing in isoform Female-I, isoform Female-A, isoform Type-D, isoform Type-C, isoform Female-B and isoform Female-E. | |||||
| Alternative sequence | 324 – 336 | 13 | Missing in isoform Female-I and isoform Male-I. | |||||
| Alternative sequence | 572 – 766 | 195 | SAALK…NQAYL → VKKSEAFLGSTGNKSMHQML LHQAVEAQLKSFQLHYQNEG LDSAMHRLLAQQQQHQEQQQ QHQQQPHHSLGKSQSPAIPS GSAGGSSRKSGRFRANWLYQ FEWLQYDERANTMFCRHCRK WSGELADIRTSFVEGNSNFR LEIVNHHNKCKSHRMCYERE LQEQQQHPMPSGSAGGSSKR RSPEIITINVGKNSA in isoform Type-C. | |||||
| Alternative sequence | 617 – 796 | 180 | RVKCF…PPSAT → SKAWHMRLTFERLSGGCNLH RCKLCGKVVTHIRNHYHVHF PGRFECPLCRATYTRSDNLR THCKFKHPMYNPDTRKFDNL MSSSAVGAAATPTASQLAVA SQAAMAAAAAAAFNAAQQQQ QQQQQQQQHQHQQQQQHQQS QQQQQQQQQSQQQLHALAQQ HMLQLQPQHHQQQQHNATSE in isoform Female-E and isoform Male-E. | |||||
| Alternative sequence | 617 – 789 | 173 | RVKCF…NHQLH → SSARHHLSTPLSTSSSASPP PPPFGMHLSAALKREYHPLH YMAAGNGHNGPSALGYGNQG SGNAPNSAGGAGSVAGGVGA GGGAGGATGAAGHNSHHTMS YHNMFTPSRDPGTMWRCRSC GKEVTNRWHHFHSHTAQRSM CPYCPATYSRIDTLRSHLRV KHPDRLLKLNSSI in isoform Female-I, isoform Male-I, isoform Female-B and isoform Male-B. | |||||
| Alternative sequence | 617 | 1 | R → E in isoform Type-D. | |||||
| Alternative sequence | 618 – 955 | 338 | Missing in isoform Type-D. | |||||
| Alternative sequence | 767 – 955 | 189 | Missing in isoform Type-C. | |||||
| Alternative sequence | 790 – 955 | 166 | Missing in isoform Female-I, isoform Male-I, isoform Female-B and isoform Male-B. | |||||
| Alternative sequence | 797 – 955 | 159 | Missing in isoform Female-E and isoform Male-E. | |||||
Experimental info | ||||||||
| Sequence conflict | 107 | 1 | C → S in AAA50838. Ref.6 | |||||
| Sequence conflict | 131 | 1 | C → R in BAA12664. Ref.3 | |||||
| Sequence conflict | 212 – 218 | 7 | RGLTDNN → CANQGSI in AAA50838. Ref.6 | |||||
| Sequence conflict | 722 – 723 | 2 | RA → QRN Ref.2 Ref.3 | |||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "Control of male sexual behavior and sexual orientation in Drosophila by the fruitless gene." Ryner L.C., Goodwin S.F., Castrillon D.H., Anand A., Villella A., Baker B.S., Hall J.C., Taylor B.J., Wasserman S.A. Cell 87:1079-1089(1996) [PubMed: 8978612] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS MALE-I AND FEMALE-I), FUNCTION, TISSUE SPECIFICITY, INTERACTION WITH TRA. Strain: Oregon-R. |
| [2] | "Sexual orientation in Drosophila is altered by the satori mutation in the sex-determination gene fruitless that encodes a zinc finger protein with a BTB domain." Ito H., Fujitani K., Usui K., Shimizu-Nishikawa K., Tanaka S., Yamamoto D. Proc. Natl. Acad. Sci. U.S.A. 93:9687-9692(1996) [PubMed: 8790392] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM FEMALE-A), FUNCTION, TISSUE SPECIFICITY. Strain: Canton-S. Tissue: Head. |
| [3] | "Formation of the male-specific muscle in female Drosophila by ectopic fruitless expression." Usui-Aoki K., Ito H., Ui-Tei K., Takahashi K., Lukacsovich T., Awano W., Nakata H., Piao Z.F., Nilsson E.E., Tomida J.-Y., Yamamoto D. Nat. Cell Biol. 2:500-506(2000) [PubMed: 10934470] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS MALE-A; FEMALE-A; MALE-B; FEMALE-B; TYPE-C; TYPE-D; MALE-E AND FEMALE-E), FUNCTION, TISSUE SPECIFICITY, INTERACTION WITH TRA. Strain: Canton-S. Tissue: Head. |
| [4] | "The genome sequence of Drosophila melanogaster." Adams M.D., Celniker S.E., Holt R.A., Evans C.A., Gocayne J.D., Amanatides P.G., Scherer S.E., Li P.W., Hoskins R.A., Galle R.F., George R.A., Lewis S.E., Richards S., Ashburner M., Henderson S.N., Sutton G.G., Wortman J.R., Yandell M.D. |

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