Involved in metal homeostasis. Specifically binds Cu(2+). The truncated isoform has less specificity in metal binding. Arabidopsis thaliana (taxid: 3702)
Several gene loci with a possible involvement in cellular tolerance to copper have been identified. One such locus in eubacteria and archaebacteria, cutA, is thought to be involved in cellular tolerance to a wide variety of divalent cations other than copper. The cutA locus consists of two operons, of one and two genes. The CutA1 protein is a cytoplasmic protein, encoded by the single-gene operon and has been linked to divalent cation tolerance. It has no recognised structural motifs. This family also contains putative proteins from eukaryotes (human and Drosophila). Length = 102
>gnl|CDD|224243 COG1324, CutA, Uncharacterized protein involved in tolerance to divalent cations [Inorganic ion transport and metabolism]
>PF03091 CutA1: CutA1 divalent ion tolerance protein; InterPro: IPR004323 The CutA family of proteins which exhibit ion tolerance are found in a large variety of species []
In E.Coli, two operons on the cutA locus contain genes that encode three proteins, CutA1, CutA2 and CutA3. CutA1 proteins are found in the cytoplasm while CutA2 (50kDa) and CutA3 (24kDa) are located in the inner membrane. Although the role of E. Coli CutA1 is not clear, studies on E. coli cutA locus describe some mutations that lead to an increase in copper sensitivity, thus suggesting a role in ion tolerance []. To date, the structure of CutA proteins from several species have been solved [, ]. The crystal structures of the E.Coli and rat CutA1 proteins show both these proteins to be trimeric in the crystal as well as in solution[].Trimerisation seems to supported by the formation of beta sheets between the subunit. This trimeric structure suggests the protein may be involved in signal transduction due to architectural similarities with PII signal transducer proteins []. Recent studies propose that mammalian CutA1 in the neuronal cell membrane acts as an anchor for acetylcholinesterase (AChE)1 [].; GO: 0010038 response to metal ion; PDB: 1O5J_A 1KR4_A 1VHF_A 3GSD_H 1OSC_A 3OPK_A 4E98_C 1V9B_F 1UKU_A 2E66_C ....
>KOG3338 consensus Divalent cation tolerance-related protein [Inorganic ion transport and metabolism]
Domain of unknown function present in signalling proteins that contain PH, rasGEF, rhoGEF, rhoGAP, RGS, PDZ domains. DEP domain in Drosophila dishevelled is essential to rescue planar polarity defects and induce JNK signalling (Cell 94, 109-118).
>cd04450 DEP_RGS7-like DEP (Dishevelled, Egl-10, and Pleckstrin) domain found in RGS (regulator of G-protein signaling) proteins of the subfamily R7
This subgroup contains RGS7, RGS6, RGS9 and RGS11. They share a common domain architecture, containing, beside the RGS domain, a DEP domain and a GGL (G-protein gamma subunit-like ) domain. RGS proteins are GTPase-activating (GAP) proteins of heterotrimeric G proteins by increasing the rate of GTP hydrolysis of the alpha subunit. The fungal homologs, like yeast Sst2, share a related common domain architecture, containing RGS and DEP domains. Sst2 has been identified as the principal regulator of mating pheromone signaling and recently the DEP domain of Sst2 has been shown to be necessary and sufficient to mediate receptor interaction.
>pdb|3OPK|A Chain A, Crystal Structure Of Divalent-Cation Tolerance Protein Cuta From Salmonella Enterica Subsp. Enterica Serovar Typhimurium Str. Lt2 Length = 118
>pdb|1V99|A Chain A, Crystal Structure Of The Periplasmic Divalent Cation Tolerance Protein Cuta From Pyrococcus Horikoshii Ot3 In The Presence Of Cucl2 Length = 102
Score = 64.7 bits (156), Expect = 1e-11, Method: Compositional matrix adjust.
Identities = 30/99 (30%), Positives = 53/99 (53%), Gaps = 2/99 (2%)
Query: 12 VVYVTVPNKEAGKKLAESIVKAKLAACVNRVPGIESVYEWKGE--TDAEELLIIKTRQSL 69
++Y T P E +++ +++ KL AC N I SVY W+ E + E +I+KT L
Sbjct: 27 LLYTTTPTYEDAYRISNILLENKLIACANIFSNITSVYVWEDEIHNNTECAIILKTTNDL 86
Query: 70 LETLTEHVKANHEYDVPEVIALPITGGSQPYLEWLKSST 108
++ T ++A H YD P +I + T + +++W+ T
Sbjct: 87 VQHATNKIQAIHPYDTPAIITIDPTNANDKFIQWVNDCT 125
Score = 52.0 bits (123), Expect = 8e-08, Method: Compositional matrix adjust.
Identities = 33/99 (33%), Positives = 49/99 (49%), Gaps = 3/99 (3%)
Query: 11 IVVYVTVPNKEAGKKLAESIVKAKLAACVNRVPGIESVYEWKGE--TDAEELLIIKTRQS 68
I+VY T PN+E ++ +++ +L AC N I S Y WKGE D E I KT +
Sbjct: 4 ILVYSTFPNEEKALEIGRKLLEKRLIACFNAFE-IRSGYWWKGEIVQDKEWAAIFKTTEE 62
Query: 69 LLETLTEHVKANHEYDVPEVIALPITGGSQPYLEWLKSS 107
+ L E ++ H Y+ P + L + Y WL+ S
Sbjct: 63 KEKELYEELRKLHPYETPAIFTLKVENVLTEYXNWLRES 101
>pdb|1O5J|A Chain A, Crystal Structure Of Periplasmic Divalent Cation Tolerance Protein (Tm1056) From Thermotoga Maritima At 1.95 A Resolution Length = 113
Score = 52.0 bits (123), Expect = 9e-08, Method: Compositional matrix adjust.
Identities = 33/99 (33%), Positives = 49/99 (49%), Gaps = 3/99 (3%)
Query: 11 IVVYVTVPNKEAGKKLAESIVKAKLAACVNRVPGIESVYEWKGET--DAEELLIIKTRQS 68
I+VY T PN+E ++ +++ +L AC N I S Y WKGE D E I KT +
Sbjct: 14 ILVYSTFPNEEKALEIGRKLLEKRLIACFNAFE-IRSGYWWKGEIVQDKEWAAIFKTTEE 72
Query: 69 LLETLTEHVKANHEYDVPEVIALPITGGSQPYLEWLKSS 107
+ L E ++ H Y+ P + L + Y WL+ S
Sbjct: 73 KEKELYEELRKLHPYETPAIFTLKVENVLTEYXNWLRES 111
Score = 52.0 bits (123), Expect = 9e-08, Method: Compositional matrix adjust.
Identities = 33/99 (33%), Positives = 49/99 (49%), Gaps = 3/99 (3%)
Query: 11 IVVYVTVPNKEAGKKLAESIVKAKLAACVNRVPGIESVYEWKGE--TDAEELLIIKTRQS 68
I+VY T PN+E ++ +++ +L AC N I S Y WKGE D E I KT +
Sbjct: 24 ILVYSTFPNEEKALEIGRKLLEKRLIACFNAFE-IRSGYWWKGEIVQDKEWAAIFKTTEE 82
Query: 69 LLETLTEHVKANHEYDVPEVIALPITGGSQPYLEWLKSS 107
+ L E ++ H Y+ P + L + Y WL+ S
Sbjct: 83 KEKELYEELRKLHPYETPAIFTLKVENILTEYXNWLRES 121
Score = 120 bits (302), Expect = 5e-37
Identities = 32/102 (31%), Positives = 50/102 (49%), Gaps = 3/102 (2%)
Query: 11 IVVYVTVPNKEAGKKLAESIVKAKLAACVNRVPGIESVYEWKG--ETDAEELLIIKTRQS 68
I+VY T PN+E ++ +++ +L AC N I S Y WKG D E I KT +
Sbjct: 4 ILVYSTFPNEEKALEIGRKLLEKRLIACFNAFE-IRSGYWWKGEIVQDKEWAAIFKTTEE 62
Query: 69 LLETLTEHVKANHEYDVPEVIALPITGGSQPYLEWLKSSTRD 110
+ L E ++ H Y+ P + L + Y+ WL+ S +
Sbjct: 63 KEKELYEELRKLHPYETPAIFTLKVENVLTEYMNWLRESVLE 104
Score = 119 bits (301), Expect = 1e-36
Identities = 32/100 (32%), Positives = 49/100 (49%), Gaps = 3/100 (3%)
Query: 11 IVVYVTVPNKEAGKKLAESIVKAKLAACVNRVPGIESVYEWKG--ETDAEELLIIKTRQS 68
I+VY T PN+E ++ +++ +L AC N I S Y WKG D E I KT +
Sbjct: 24 ILVYSTFPNEEKALEIGRKLLEKRLIACFNAFE-IRSGYWWKGEIVQDKEWAAIFKTTEE 82
Query: 69 LLETLTEHVKANHEYDVPEVIALPITGGSQPYLEWLKSST 108
+ L E ++ H Y+ P + L + Y+ WL+ S
Sbjct: 83 KEKELYEELRKLHPYETPAIFTLKVENILTEYMNWLRESV 122
Score = 116 bits (292), Expect = 2e-35
Identities = 32/100 (32%), Positives = 49/100 (49%), Gaps = 3/100 (3%)
Query: 11 IVVYVTVPNKEAGKKLAESIVKAKLAACVNRVPGIESVYEWKG--ETDAEELLIIKTRQS 68
I+VY T PN+E ++ +++ +L AC N I S Y WKG D E I KT +
Sbjct: 14 ILVYSTFPNEEKALEIGRKLLEKRLIACFNAFE-IRSGYWWKGEIVQDKEWAAIFKTTEE 72
Query: 69 LLETLTEHVKANHEYDVPEVIALPITGGSQPYLEWLKSST 108
+ L E ++ H Y+ P + L + Y+ WL+ S
Sbjct: 73 KEKELYEELRKLHPYETPAIFTLKVENVLTEYMNWLRESV 112
class: Alpha and beta proteins (a+b)
fold: Ferredoxin-like
superfamily: GlnB-like
family: Divalent ion tolerance proteins CutA (CutA1)
domain: Hypothetical protein TM1056
species: Thermotoga maritima [TaxId: 2336]
Score = 112 bits (281), Expect = 2e-34
Identities = 32/100 (32%), Positives = 49/100 (49%), Gaps = 3/100 (3%)
Query: 11 IVVYVTVPNKEAGKKLAESIVKAKLAACVNRVPGIESVYEWKG--ETDAEELLIIKTRQS 68
I+VY T PN+E ++ +++ +L AC N I S Y WKG D E I KT +
Sbjct: 9 ILVYSTFPNEEKALEIGRKLLEKRLIACFNAFE-IRSGYWWKGEIVQDKEWAAIFKTTEE 67
Query: 69 LLETLTEHVKANHEYDVPEVIALPITGGSQPYLEWLKSST 108
+ L E ++ H Y+ P + L + Y+ WL+ S
Sbjct: 68 KEKELYEELRKLHPYETPAIFTLKVENILTEYMNWLRESV 107
