TFIIA is a component of the transcription machinery of RNA polymerase II and plays an important role in transcriptional activation. TFIIA in a complex with TBP mediates transcriptional activity. Arabidopsis thaliana (taxid: 3702)
TFIIA is a component of the transcription machinery of RNA polymerase II and plays an important role in transcriptional activation. TFIIA in a complex with TBP mediates transcriptional activity (By similarity). Protein involved in the resistance to X.oryzae.
TFIIA is a component of the transcription machinery of RNA polymerase II and plays an important role in transcriptional activation. TFIIA in a complex with TBP mediates transcriptional activity (By similarity). Protein involved in the resistance to X.oryzae.
TFIIA is a component of the transcription machinery of RNA polymerase II and plays an important role in transcriptional activation. TFIIA in a complex with tbp mediates transcriptional activity.
Score = 119 bits (297), Expect = 8e-27, Method: Compositional matrix adjust.
Identities = 52/99 (52%), Positives = 74/99 (74%)
Query: 4 FELYRRSTIGMCLTETLDEMVQNGTLTPELAIQVLVQFDKSMTEALETQVKSKVSIKGHL 63
++LYR +T+G L E+LDE++Q +TP+LA+QVL+QFDK++ AL +V+++V+ KG L
Sbjct: 3 YQLYRNTTLGNSLQESLDELIQTQQITPQLALQVLLQFDKAINTALANRVRNRVNFKGSL 62
Query: 64 HTYRFCDNVWTFILQDALFKSEELQETVGRVKIVACDSK 102
+TYRFCDNVWTF+L D F+ V +VKIVACD K
Sbjct: 63 NTYRFCDNVWTFVLNDVEFREVTDLVKVDKVKIVACDGK 101
TFIIA is a component of the transcription machinery of RNA polymerase II and plays an important role in transcriptional activation. TFIIA in a complex with TBP mediates transcriptional activity.
Score = 118 bits (295), Expect = 1e-26, Method: Compositional matrix adjust.
Identities = 51/99 (51%), Positives = 75/99 (75%)
Query: 4 FELYRRSTIGMCLTETLDEMVQNGTLTPELAIQVLVQFDKSMTEALETQVKSKVSIKGHL 63
++LYR +T+G L E+LDE++Q +TP+LA+QVL+QFDK++ AL ++V+++V+ +G L
Sbjct: 3 YQLYRNTTLGNSLQESLDELIQTQQITPQLALQVLLQFDKAINTALASRVRNRVNFRGSL 62
Query: 64 HTYRFCDNVWTFILQDALFKSEELQETVGRVKIVACDSK 102
+TYRFCDNVWTF+L D F+ V +VKIVACD K
Sbjct: 63 NTYRFCDNVWTFVLNDVEFREVTDLVKVDKVKIVACDGK 101
TFIIA is a component of the transcription machinery of RNA polymerase II and plays an important role in transcriptional activation. TFIIA in a complex with TBP mediates transcriptional activity.
Score = 117 bits (294), Expect = 1e-26, Method: Compositional matrix adjust.
Identities = 51/99 (51%), Positives = 75/99 (75%)
Query: 4 FELYRRSTIGMCLTETLDEMVQNGTLTPELAIQVLVQFDKSMTEALETQVKSKVSIKGHL 63
++LYR +T+G L E+LDE++Q+ +TP+LA+QVL+QFDK++ AL +V+++V+ +G L
Sbjct: 3 YQLYRNTTLGNSLQESLDELIQSQQITPQLALQVLLQFDKAINSALAQRVRNRVNFRGSL 62
Query: 64 HTYRFCDNVWTFILQDALFKSEELQETVGRVKIVACDSK 102
+TYRFCDNVWTF+L D F+ V +VKIVACD K
Sbjct: 63 NTYRFCDNVWTFVLNDVEFREVTELIKVDKVKIVACDGK 101
TFIIA is a component of the transcription machinery of RNA polymerase II and plays an important role in transcriptional activation. TFIIA in a complex with TBP mediates transcriptional activity.
Score = 117 bits (294), Expect = 1e-26, Method: Compositional matrix adjust.
Identities = 51/99 (51%), Positives = 75/99 (75%)
Query: 4 FELYRRSTIGMCLTETLDEMVQNGTLTPELAIQVLVQFDKSMTEALETQVKSKVSIKGHL 63
++LYR +T+G L E+LDE++Q+ +TP+LA+QVL+QFDK++ AL +V+++V+ +G L
Sbjct: 3 YQLYRNTTLGNSLQESLDELIQSQQITPQLALQVLLQFDKAINSALAQRVRNRVNFRGSL 62
Query: 64 HTYRFCDNVWTFILQDALFKSEELQETVGRVKIVACDSK 102
+TYRFCDNVWTF+L D F+ V +VKIVACD K
Sbjct: 63 NTYRFCDNVWTFVLNDVEFREVTELIKVDKVKIVACDGK 101
TFIIA is a component of the transcription machinery of RNA polymerase II and plays an important role in transcriptional activation. TFIIA in a complex with TBP mediates transcriptional activity.
Score = 117 bits (294), Expect = 1e-26, Method: Compositional matrix adjust.
Identities = 56/103 (54%), Positives = 80/103 (77%), Gaps = 5/103 (4%)
Query: 3 TFELYRRSTIGMCLTETLDEMVQNGTLTPELAIQVLVQFDKSMTEALETQVKSKVSIK-G 61
+++LYR +T+G L E+LDE++Q G +TP LA++VL+QFDK++ AL +VK++++ K G
Sbjct: 2 SYQLYRNTTLGNTLQESLDELIQCGQITPHLALKVLLQFDKAINNALANRVKTRLTFKAG 61
Query: 62 HLHTYRFCDNVWTFILQDALFKSEELQETV--GRVKIVACDSK 102
HL TYRFCDNVWTF+L+D F+ E+QE V +VKIVACD K
Sbjct: 62 HLSTYRFCDNVWTFVLKDVEFR--EVQELVKADKVKIVACDGK 102
TFIIA is a component of the transcription machinery of RNA polymerase II and plays an important role in transcriptional activation. TFIIA in a complex with Tbp mediates transcriptional activity.
Score = 117 bits (294), Expect = 2e-26, Method: Compositional matrix adjust.
Identities = 51/99 (51%), Positives = 75/99 (75%)
Query: 4 FELYRRSTIGMCLTETLDEMVQNGTLTPELAIQVLVQFDKSMTEALETQVKSKVSIKGHL 63
++LYR +T+G L E+LDE++Q+ +TP+LA+QVL+QFDK++ AL +V+++V+ +G L
Sbjct: 3 YQLYRNTTLGNSLQESLDELIQSQQITPQLALQVLLQFDKAINAALAQRVRNRVNFRGSL 62
Query: 64 HTYRFCDNVWTFILQDALFKSEELQETVGRVKIVACDSK 102
+TYRFCDNVWTF+L D F+ V +VKIVACD K
Sbjct: 63 NTYRFCDNVWTFVLNDVEFREVTELIKVDKVKIVACDGK 101
TFIIA is a component of the transcription machinery of RNA polymerase II and plays an important role in transcriptional activation. TFIIA in a complex with TBP mediates transcriptional activity.
Homo sapiens (taxid: 9606)
Close Homologs in the Non-Redundant Database Detected by BLAST
Accurate transcription in vivo requires at least six general transcription initiation factors, in addition to RNA polymerase II. Transcription initiation factor IIA (TFIIA) is a multimeric protein which facilitates the binding of TFIID to the TATA box. The C-terminal domain of the gamma subunit is a 12 stranded beta-barrel. Length = 51
Accurate transcription in vivo requires at least six general transcription initiation factors, in addition to RNA polymerase II. Transcription initiation factor IIA (TFIIA) is a multimeric protein which facilitates the binding of TFIID to the TATA box. The N-terminal domain of the gamma subunit is a 4 helix bundle. Length = 49
Transcription factor II A (TFIIA) is one of the general transcription factors for RNA polymerase II. TFIIA increases the affinity of the TATA-binding protein (TBP) for DNA, in order to assemble the initiation complex. TFIIA also functions as an activator during development and differentiation, and is involved in transcription from TATA-less promoters. TFIIA is composed of more than one subunit in various organisms. Mammalian TFIIA large subunits (TFIIA alpha and beta), and the smaller subunit (TFIIA gamma) form a heterotrimer. TFIIA alpha and beta are encoded by a single TFIIA_alpha_beta gene and post-translationally processed and cleaved. TOA1 and TOA2 are the two subunits of Yeast TFIIA which correspond to Mammalian TFIIA_alpha_beta and TFIIA gamma, respectively. TOA1 and TOA2 form a heterodimeric protein complex. The TFIIA gamma subunit is highly conserved between humans, Drosophila and yeast and it is required for TFIIA function. The N-terminal domain of the gamma subunit forms a 4-helix bundle together with the alpha subunit. Length = 49
Score = 79.2 bits (196), Expect = 2e-21
Identities = 30/47 (63%), Positives = 34/47 (72%), Gaps = 1/47 (2%)
Query: 57 VSIKGHLHTYRFCDNVWTFILQDALFKSEELQ-ETVGRVKIVACDSK 102
++ KGHL TYRFCDNVWTFIL D FK + TV +VKIVACD K
Sbjct: 1 LTFKGHLKTYRFCDNVWTFILNDVEFKESNTEVVTVDKVKIVACDGK 47
Transcription factor II A (TFIIA) is one of the general transcription factors for RNA polymerase II. TFIIA increases the affinity of the TATA-binding protein (TBP) for DNA, in order to assemble the initiation complex. TFIIA also functions as an activator during development and differentiation, and is involved in transcription from TATA-less promoters. TFIIA is composed of more than one subunit in various organisms. Mammalian TFIIA large subunits (TFIIA alpha and beta), and the smaller subunit (TFIIA gamma) form a heterotrimer. TFIIA alpha and beta are encoded by a single TFIIA_alpha_beta gene and post-translationally processed and cleaved. TOA1 and TOA2 are the two subunits of Yeast TFIIA which correspond to Mammalian TFIIA_alpha_beta and TFIIA gamma, respectively. TOA1 and TOA2 form a heterodimeric protein complex. The TFIIA gamma subunit is highly conserved between humans, Drosophila and yeast and it is required for TFIIA function. The C-terminal domain of the gamma (TFIIA_gamma_C) subunit forms a beta-barrel structure together with TFIIA beta. Length = 47
>PF02751 TFIIA_gamma_C: Transcription initiation factor IIA, gamma subunit; InterPro: IPR015871 Transcription factor IIA (TFIIA) is one of several factors that form part of a transcription pre-initiation complex along with RNA polymerase II, the TATA-box-binding protein (TBP) and TBP-associated factors, on the TATA-box sequence upstream of the initiation start site
After initiation, some components of the pre-initiation complex (including TFIIA) remain attached and re-initiate a subsequent round of transcription. TFIIA binds to TBP to stabilise TBP binding to the TATA element. TFIIA also inhibits the cytokine HMGB1 (high mobility group 1 protein) binding to TBP [], and can dissociate HMGB1 already bound to TBP/TATA-box. Human and Drosophila TFIIA have three subunits: two large subunits, LN/alpha and LC/beta, derived from the same gene, and a small subunit, S/gamma. Yeast TFIIA has two subunits: a large TOA1 subunit that shows sequence similarity to the N-terminal of LN/alpha and the C-terminal of LC/beta, and a small subunit, TOA2 that is highly homologous with S/gamma. The conserved regions of the large and small subunits of TFIIA combine to form two domains: a four-helix bundle (helical domain) composed of two helices from each of the N-terminal regions of TOA1 and TOA2 in yeast; and a beta-barrel (beta-barrel domain) composed of beta-sheets from the C-terminal regions of TOA1 and TOA2 []. This entry represents the beta-barrel domain found at the C-terminal of the gamma subunit of transcription factor TFIIA. ; GO: 0006367 transcription initiation from RNA polymerase II promoter, 0005672 transcription factor TFIIA complex; PDB: 1NVP_D 1RM1_B 1YTF_D 1NH2_D.
>PF02268 TFIIA_gamma_N: Transcription initiation factor IIA, gamma subunit, helical domain; InterPro: IPR015872 Transcription factor IIA (TFIIA) is one of several factors that form part of a transcription pre-initiation complex along with RNA polymerase II, the TATA-box-binding protein (TBP) and TBP-associated factors, on the TATA-box sequence upstream of the initiation start site
After initiation, some components of the pre-initiation complex (including TFIIA) remain attached and re-initiate a subsequent round of transcription. TFIIA binds to TBP to stabilise TBP binding to the TATA element. TFIIA also inhibits the cytokine HMGB1 (high mobility group 1 protein) binding to TBP [], and can dissociate HMGB1 already bound to TBP/TATA-box. Human and Drosophila TFIIA have three subunits: two large subunits, LN/alpha and LC/beta, derived from the same gene, and a small subunit, S/gamma. Yeast TFIIA has two subunits: a large TOA1 subunit that shows sequence similarity to the N-terminal of LN/alpha and the C-terminal of LC/beta, and a small subunit, TOA2 that is highly homologous with S/gamma. The conserved regions of the large and small subunits of TFIIA combine to form two domains: a four-helix bundle (helical domain) composed of two helices from each of the N-terminal regions of TOA1 and TOA2 in yeast; and a beta-barrel (beta-barrel domain) composed of beta-sheets from the C-terminal regions of TOA1 and TOA2 []. This entry represents the alpha-helical domain found at the N-terminal of the gamma subunit of transcription factor TFIIA.; GO: 0006367 transcription initiation from RNA polymerase II promoter, 0005672 transcription factor TFIIA complex; PDB: 1NVP_D 1RM1_B 1YTF_D 1NH2_D.
>PF10925 DUF2680: Protein of unknown function (DUF2680); InterPro: IPR024485 Members in this family of proteins are annotated as YckD however currently no function is known
An RT gene is usually indicative of a mobile element such as a retrotransposon or retrovirus. RTs occur in a variety of mobile elements, including retrotransposons, retroviruses, group II introns, bacterial msDNAs, hepadnaviruses, and caulimoviruses. These elements can be divided into two major groups. One group contains retroviruses and DNA viruses whose propagation involves an RNA intermediate. They are grouped together with transposable elements containing long terminal repeats (LTRs). The other group, also called poly(A)-type retrotransposons, contain fungal mitochondrial introns and transposable elements that lack LTRs.
>PF11848 DUF3368: Domain of unknown function (DUF3368); InterPro: IPR021799 This domain is functionally uncharacterised
This domain is found in bacteria and archaea. This presumed domain is about 50 amino acids in length.
>PF09925 DUF2157: Predicted membrane protein (DUF2157); InterPro: IPR018677 This family of various hypothetical prokaryotic proteins has no known function
The polymerase reaction of this enzyme leads to the production of a unique RNA-DNA complex called msDNA (multicopy single-stranded (ss)DNA) in which a small ssDNA branches out from a small ssRNA molecule via a 2'-5'phosphodiester linkage. Bacterial retron RTs produce cDNA corresponding to only a small portion of the retron genome.
>cd03487 RT_Bac_retron_II RT_Bac_retron_II: Reverse transcriptases (RTs) in bacterial retrotransposons or retrons
The polymerase reaction of this enzyme leads to the production of a unique RNA-DNA complex called msDNA (multicopy single-stranded (ss)DNA) in which a small ssDNA branches out from a small ssRNA molecule via a 2'-5'phosphodiester linkage. Bacterial retron RTs produce cDNA corresponding to only a small portion of the retron genome.
