Guanine nucleotide-binding proteins (G proteins) are involved as a modulator or transducer in various transmembrane signaling systems. The beta and gamma chains are required for the GTPase activity, for replacement of GDP by GTP, and for G protein-effector interaction. Involved in the abscisic acid (ABA) and ethylene signaling pathways. Regulates acropetal transport of auxin (IAA) in roots and hypocotyls, and thus modulates root architecture (e.g. lateral root formation). The heterotrimeric G-protein controls defense responses to necrotrophic and vascular fungi probably by modulating cell wall-related genes expression; involved in resistance to fungal pathogens such as Alternaria brassicicola, Plectosphaerella cucumerina and Fusarium oxysporum. Arabidopsis thaliana (taxid: 3702)
Score = 97.4 bits (241), Expect = 2e-20, Method: Compositional matrix adjust.
Identities = 51/88 (57%), Positives = 66/88 (75%)
Query: 20 AGGGTDTTGKHRILAELKRVEQESRFLEEELEELDKTENVSTICDELLKFMEARPDPLLS 79
+G DT GKHRI AELKR+EQE+RFLEEELE+L+K +N S C E L ++++PDPLL
Sbjct: 13 SGRVVDTRGKHRIQAELKRLEQEARFLEEELEQLEKMDNASASCKEFLDSVDSKPDPLLP 72
Query: 80 VTNSPINPIWDRWFEGPQDARGCRCMIL 107
T P+N WD+WFEGP++A+ C C IL
Sbjct: 73 ETTGPVNATWDQWFEGPKEAKRCGCSIL 100
Guanine nucleotide-binding proteins (G proteins) are involved as a modulator or transducer in various transmembrane signaling systems. The beta and gamma chains are required for the GTPase activity, for replacement of GDP by GTP, and for G protein-effector interaction. Involved in the abscisic acid (ABA) and ethylene signaling pathways. Regulates basipetal transport of auxin (IAA) in roots and hypocotyls, and thus modulates root architecture (e.g. lateral root formation). The heterotrimeric G-protein controls defense responses to necrotrophic and vascular fungi probably by modulating cell wall-related genes expression; involved in resistance to Plectosphaerella cucumerina.
Arabidopsis thaliana (taxid: 3702)
Close Homologs in the Non-Redundant Database Detected by BLAST
Score = 120 (47.3 bits), Expect = 1.4e-07, P = 1.4e-07
Identities = 24/72 (33%), Positives = 37/72 (51%)
Query: 29 KHRILAELKRVEQESRFXXXXXXXXDKTENVSTICDELLKFMEARPDPLLSVTNSPINPI 88
KHR+ A + R++QE + + E S C ++ E + DPLL VT P N
Sbjct: 66 KHRLSAAIARLDQELQSLQDELNELETMEPASAACQGVITSTEGKSDPLLPVTIGPENAS 125
Query: 89 WDRWFEGPQDAR 100
W+RWF+ + +R
Sbjct: 126 WERWFQRVRSSR 137
Parameters:
V=100
filter=SEG
E=0.001
ctxfactor=1.00
Query ----- As Used ----- ----- Computed ----
Frame MatID Matrix name Lambda K H Lambda K H
+0 0 BLOSUM62 0.319 0.136 0.421 same same same
Q=9,R=2 0.244 0.0300 0.180 n/a n/a n/a
Query
Frame MatID Length Eff.Length E S W T X E2 S2
+0 0 107 84 0.00091 102 3 11 22 0.45 29
29 0.45 30
Statistics:
Database: /share/blast/go-seqdb.fasta
Title: go_20130330-seqdb.fasta
Posted: 5:47:42 AM PDT Apr 1, 2013
Created: 5:47:42 AM PDT Apr 1, 2013
Format: XDF-1
# of letters in database: 169,044,731
# of sequences in database: 368,745
# of database sequences satisfying E: 4
No. of states in DFA: 539 (57 KB)
Total size of DFA: 113 KB (2076 KB)
Time to generate neighborhood: 0.00u 0.00s 0.00t Elapsed: 00:00:00
No. of threads or processors used: 24
Search cpu time: 8.34u 0.13s 8.47t Elapsed: 00:00:00
Total cpu time: 8.34u 0.13s 8.47t Elapsed: 00:00:00
Start: Fri May 10 09:18:32 2013 End: Fri May 10 09:18:32 2013
Score = 42.3 bits (100), Expect = 9e-07
Identities = 22/76 (28%), Positives = 32/76 (42%), Gaps = 9/76 (11%)
Query: 32 ILAELKRVEQESRFLEEELEELDKTENVSTICDELLKFMEAR--PDPLLSVTNSPINPIW 89
+ R+++E L+EELE + VS C EL+ + E R DPLL P
Sbjct: 1 MSQLKLRLKREIEQLKEELER--ERIKVSKACKELIDYCEQRSTKDPLLPGVWPP--NKE 56
Query: 90 DRWFEGPQDARGCRCM 105
+ W E C +
Sbjct: 57 NPWIE---KDGCCWIL 69
G-protein gamma like domains (GGL) are found in the gamma subunit of the heterotrimeric G protein complex and in regulators of G protein signaling (RGS) proteins. It is also found fused to an inactive Galpha in the Dictyostelium protein gbqA. G-gamma likely shares a common origin with the helical N-terminal unit of G-beta. All organisms that posses a G-beta possess a G-gamma. Length = 69
DUF1049: Protein of unknown function (DUF1049); In
83.34
>PF00631 G-gamma: GGL domain; InterPro: IPR015898 This entry represents the G protein gamma subunit and the GGL (G protein gamma-like) domain, which are related in sequence and are comprised of an extended alpha-helical polypeptide
The G protein gamma subunit forms a stable dimer with the beta subunit, but it does not make any contact with the alpha subunit, which contacts the opposite face of the beta subunit. The GGL domain is found in several RGS (regulators of G protein signaling) proteins. GGL domains can interact with beta subunits to form novel dimers that prevent gamma subunit binding, and may prevent heterotrimer formation by inhibiting alpha subunit binding. The interaction between G protein beta-5 neuro-specific isoforms and RGS GGL domains may represent a general mode of binding between beta-propeller proteins and their partners [].; GO: 0004871 signal transducer activity, 0007186 G-protein coupled receptor protein signaling pathway, 0005834 heterotrimeric G-protein complex; PDB: 3PSC_G 3SN6_G 1OMW_G 2BCJ_G 1GG2_G 3PVW_G 3PVU_G 3AH8_G 3CIK_G 1GP2_G ....
>cd00068 GGL G protein gamma subunit-like motifs, the alpha-helical G-gamma chain dimerizes with the G-beta propeller subunit as part of the heterotrimeric G-protein complex; involved in signal transduction via G-protein-coupled receptors
This model finds a set of small proteins from the Archaea and from Aquifex aeolicus that may represent two orthologous groups. The proteins are predicted to be mostly coiled coil, and may hit large numbers of proteins that contain coiled coil regions.
>COG1730 GIM5 Predicted prefoldin, molecular chaperone implicated in de novo protein folding [Posttranslational modification, protein turnover, chaperones]
>PF12325 TMF_TATA_bd: TATA element modulatory factor 1 TATA binding; InterPro: IPR022091 This is the C-terminal conserved coiled coil region of a family of TATA element modulatory factor 1 proteins conserved in eukaryotes []
The proteins bind to the TATA element of some RNA polymerase II promoters and repress their activity. by competing with the binding of TATA binding protein. TMF1_TATA_bd is the most conserved part of the TMFs []. TMFs are evolutionarily conserved golgins that bind Rab6, a ubiquitous ras-like GTP-binding Golgi protein, and contribute to Golgi organisation in animal [] and plant cells. The Rab6-binding domain appears to be the same region as this C-terminal family [].
>PF13863 DUF4200: Domain of unknown function (DUF4200)
>cd00584 Prefoldin_alpha Prefoldin alpha subunit; Prefoldin is a hexameric molecular chaperone complex, found in both eukaryotes and archaea, that binds and stabilizes newly synthesized polypeptides allowing them to fold correctly
The complex contains two alpha and four beta subunits, the two subunits being evolutionarily related. In archaea, there is usually only one gene for each subunit while in eukaryotes there two or more paralogous genes encoding each subunit adding heterogeneity to the structure of the hexamer. The structure of the complex consists of a double beta barrel assembly with six protruding coiled-coils.
>PF06305 DUF1049: Protein of unknown function (DUF1049); InterPro: IPR010445 This entry consists of several hypothetical bacterial proteins of unknown function
