Hydrolytic ATP binding site of dynein motor region; This domain is found in human cytoplasmic ...
1238-1564
0e+00
Hydrolytic ATP binding site of dynein motor region; This domain is found in human cytoplasmic dynein-2 proteins. Cytoplasmic dynein-2 (dynein-2) performs intraflagellar transport and is associated with human skeletal ciliopathies. Dyneins share a conserved motor domain that couples cycles of ATP hydrolysis with conformational changes to produce movement. Structural analysis reveal that the motor's ring consists of six AAA+ domains (ATPases associated with various cellular activities: AAA1-AAA6). This is the first site (out of four nucleotide binding sites in the dynein motor) where the movement depends on ATP hydrolysis. When this site is nucleotide free or bound to ADP, the microtubule binding domain (MTBD) binds to the microtubule and the linker adopts the straight post-power-stroke conformation. Upon ATP binding and hydrolysis, the MTBD detaches from the microtubule and the linker is primed into the pre-power-stroke conformation. Dynein's AAA+ domains are each divided into an alpha/beta large subdomain designated with an L and and alpha small subdomains designated with an S. This is the AAA1 large (AAA1L) subdomain with the accompanying small subdomain (AAA1S). AAA1L, AAA1S and AAA2L enclose ADP.vanadate (ADP.Vi, ATP-hydrolysis transition state analogue). The AAA1L sensor-I loop, which varies in position depending on dynein's nucleotide state, swings in to contact AAA2L forming the important AAA1 nucleotide-binding site.
:
Pssm-ID: 463697 [Multi-domain] Cd Length: 327 Bit Score: 651.47 E-value: 0e+00
Dynein heavy chain, N-terminal region 2; Dyneins are described as motor proteins of eukaryotic ...
676-1110
2.27e-155
Dynein heavy chain, N-terminal region 2; Dyneins are described as motor proteins of eukaryotic cells, as they can convert energy derived from the hydrolysis of ATP to force and movement along cytoskeletal polymers, such as microtubules. This region is found C-terminal to the dynein heavy chain N-terminal region 1 (pfam08385) in many members of this family. No functions seem to have been attributed specifically to this region.
:
Pssm-ID: 462462 [Multi-domain] Cd Length: 402 Bit Score: 488.31 E-value: 2.27e-155
Dynein heavy chain C-terminal domain; This family represents the C-terminal domain of dynein ...
3634-3935
2.56e-146
Dynein heavy chain C-terminal domain; This family represents the C-terminal domain of dynein heavy chain. This domain is a complex structure comprising six alpha-helices and an incomplete six-stranded antiparallel beta-barrel. The shape of this domain is distinctively flat, spreading over the AAA1, AAA5 and AAA6 domain.
:
Pssm-ID: 465677 Cd Length: 301 Bit Score: 457.85 E-value: 2.56e-146
ATP-binding dynein motor region; This domain is found in human cytoplasmic dynein-2 proteins. ...
2873-3094
6.14e-129
ATP-binding dynein motor region; This domain is found in human cytoplasmic dynein-2 proteins. Cytoplasmic dynein-2 (dynein-2) performs intraflagellar transport and is associated with human skeletal ciliopathies. Dyneins share a conserved motor domain that couples cycles of ATP hydrolysis with conformational changes to produce movement. Structural analysis reveal that the motor's ring consists of six AAA+ domains (ATPases associated with various cellular activities (AAA1-AAA6). This is the fifth AAA+ domain subdomain AAA5S. Structural analysis reveal that it is the coiled-coil buttress interface. The relative movement of AAA5S together with the stalk (AAA4S), is coupled to rearrangements in the AAA+ ring. Closure of the AAA1 site and the rigid body movement of AAA2-AAA4 force the AAA4/AAA5 interface to close and the AAA6L subdomain to rotate towards the ring centre. The AAA5S subdomain rotates as a unit together with AAA6L, and this movement pulls the buttress relative to the stalk.
:
Pssm-ID: 463702 [Multi-domain] Cd Length: 222 Bit Score: 404.52 E-value: 6.14e-129
P-loop containing dynein motor region D4; The 380 kDa motor unit of dynein belongs to the AAA ...
2246-2506
8.68e-127
P-loop containing dynein motor region D4; The 380 kDa motor unit of dynein belongs to the AAA class of chaperone-like ATPases. The core of the 380 kDa motor unit contains a concatenated chain of six AAA modules, of which four correspond to the ATP binding sites with P-loop signatures described previously, and two are modules in which the P loop has been lost in evolution. This particular family is the D4 ATP-binding region of the motor.
:
Pssm-ID: 463701 [Multi-domain] Cd Length: 259 Bit Score: 400.06 E-value: 8.68e-127
Hydrolytic ATP binding site of dynein motor region; This domain is found in human cytoplasmic ...
1238-1564
0e+00
Hydrolytic ATP binding site of dynein motor region; This domain is found in human cytoplasmic dynein-2 proteins. Cytoplasmic dynein-2 (dynein-2) performs intraflagellar transport and is associated with human skeletal ciliopathies. Dyneins share a conserved motor domain that couples cycles of ATP hydrolysis with conformational changes to produce movement. Structural analysis reveal that the motor's ring consists of six AAA+ domains (ATPases associated with various cellular activities: AAA1-AAA6). This is the first site (out of four nucleotide binding sites in the dynein motor) where the movement depends on ATP hydrolysis. When this site is nucleotide free or bound to ADP, the microtubule binding domain (MTBD) binds to the microtubule and the linker adopts the straight post-power-stroke conformation. Upon ATP binding and hydrolysis, the MTBD detaches from the microtubule and the linker is primed into the pre-power-stroke conformation. Dynein's AAA+ domains are each divided into an alpha/beta large subdomain designated with an L and and alpha small subdomains designated with an S. This is the AAA1 large (AAA1L) subdomain with the accompanying small subdomain (AAA1S). AAA1L, AAA1S and AAA2L enclose ADP.vanadate (ADP.Vi, ATP-hydrolysis transition state analogue). The AAA1L sensor-I loop, which varies in position depending on dynein's nucleotide state, swings in to contact AAA2L forming the important AAA1 nucleotide-binding site.
Pssm-ID: 463697 [Multi-domain] Cd Length: 327 Bit Score: 651.47 E-value: 0e+00
Dynein heavy chain, N-terminal region 2; Dyneins are described as motor proteins of eukaryotic ...
676-1110
2.27e-155
Dynein heavy chain, N-terminal region 2; Dyneins are described as motor proteins of eukaryotic cells, as they can convert energy derived from the hydrolysis of ATP to force and movement along cytoskeletal polymers, such as microtubules. This region is found C-terminal to the dynein heavy chain N-terminal region 1 (pfam08385) in many members of this family. No functions seem to have been attributed specifically to this region.
Pssm-ID: 462462 [Multi-domain] Cd Length: 402 Bit Score: 488.31 E-value: 2.27e-155
Dynein heavy chain C-terminal domain; This family represents the C-terminal domain of dynein ...
3634-3935
2.56e-146
Dynein heavy chain C-terminal domain; This family represents the C-terminal domain of dynein heavy chain. This domain is a complex structure comprising six alpha-helices and an incomplete six-stranded antiparallel beta-barrel. The shape of this domain is distinctively flat, spreading over the AAA1, AAA5 and AAA6 domain.
Pssm-ID: 465677 Cd Length: 301 Bit Score: 457.85 E-value: 2.56e-146
ATP-binding dynein motor region; This domain is found in human cytoplasmic dynein-2 proteins. ...
2873-3094
6.14e-129
ATP-binding dynein motor region; This domain is found in human cytoplasmic dynein-2 proteins. Cytoplasmic dynein-2 (dynein-2) performs intraflagellar transport and is associated with human skeletal ciliopathies. Dyneins share a conserved motor domain that couples cycles of ATP hydrolysis with conformational changes to produce movement. Structural analysis reveal that the motor's ring consists of six AAA+ domains (ATPases associated with various cellular activities (AAA1-AAA6). This is the fifth AAA+ domain subdomain AAA5S. Structural analysis reveal that it is the coiled-coil buttress interface. The relative movement of AAA5S together with the stalk (AAA4S), is coupled to rearrangements in the AAA+ ring. Closure of the AAA1 site and the rigid body movement of AAA2-AAA4 force the AAA4/AAA5 interface to close and the AAA6L subdomain to rotate towards the ring centre. The AAA5S subdomain rotates as a unit together with AAA6L, and this movement pulls the buttress relative to the stalk.
Pssm-ID: 463702 [Multi-domain] Cd Length: 222 Bit Score: 404.52 E-value: 6.14e-129
P-loop containing dynein motor region D4; The 380 kDa motor unit of dynein belongs to the AAA ...
2246-2506
8.68e-127
P-loop containing dynein motor region D4; The 380 kDa motor unit of dynein belongs to the AAA class of chaperone-like ATPases. The core of the 380 kDa motor unit contains a concatenated chain of six AAA modules, of which four correspond to the ATP binding sites with P-loop signatures described previously, and two are modules in which the P loop has been lost in evolution. This particular family is the D4 ATP-binding region of the motor.
Pssm-ID: 463701 [Multi-domain] Cd Length: 259 Bit Score: 400.06 E-value: 8.68e-127
P-loop containing dynein motor region; This domain is found in human cytoplasmic dynein-2 ...
1875-2053
2.85e-106
P-loop containing dynein motor region; This domain is found in human cytoplasmic dynein-2 proteins. Cytoplasmic dynein-2 (dynein-2) performs intraflagellar transport and is associated with human skeletal ciliopathies. Dyneins share a conserved motor domain that couples cycles of ATP hydrolysis with conformational changes to produce movement. Structural analysis reveal that the motor's ring consists of six AAA+ domains (ATPases associated with various cellular activities (AAA1-AAA6). This is the third nucleotide binding sites in the dynein motor. However, AAA3 has lost the catalytic residues necessary for ATP hydrolysis (the Walker B glutamate, the arginine finger, sensor-I and sensor-II motifs).
Pssm-ID: 463698 [Multi-domain] Cd Length: 179 Bit Score: 337.44 E-value: 2.85e-106
The AAA+ (ATPases Associated with a wide variety of cellular Activities) superfamily ...
1886-2047
2.89e-07
The AAA+ (ATPases Associated with a wide variety of cellular Activities) superfamily represents an ancient group of ATPases belonging to the ASCE (for additional strand, catalytic E) division of the P-loop NTPase fold. The ASCE division also includes ABC, RecA-like, VirD4-like, PilT-like, and SF1/2 helicases. Members of the AAA+ ATPases function as molecular chaperons, ATPase subunits of proteases, helicases, or nucleic-acid stimulated ATPases. The AAA+ proteins contain several distinct features in addition to the conserved alpha-beta-alpha core domain structure and the Walker A and B motifs of the P-loop NTPases.
Pssm-ID: 99707 [Multi-domain] Cd Length: 151 Bit Score: 52.92 E-value: 2.89e-07
chromosome segregation protein SMC, common bacterial type; SMC (structural maintenance of ...
2490-2620
2.37e-05
chromosome segregation protein SMC, common bacterial type; SMC (structural maintenance of chromosomes) proteins bind DNA and act in organizing and segregating chromosomes for partition. SMC proteins are found in bacteria, archaea, and eukaryotes. This family represents the SMC protein of most bacteria. The smc gene is often associated with scpB (TIGR00281) and scpA genes, where scp stands for segregation and condensation protein. SMC was shown (in Caulobacter crescentus) to be induced early in S phase but present and bound to DNA throughout the cell cycle. [Cellular processes, Cell division, DNA metabolism, Chromosome-associated proteins]
Pssm-ID: 274008 [Multi-domain] Cd Length: 1179 Bit Score: 50.83 E-value: 2.37e-05
ATPases associated with a variety of cellular activities; AAA - ATPases associated with a ...
1905-2021
2.58e-03
ATPases associated with a variety of cellular activities; AAA - ATPases associated with a variety of cellular activities. This profile/alignment only detects a fraction of this vast family. The poorly conserved N-terminal helix is missing from the alignment.
Pssm-ID: 214640 [Multi-domain] Cd Length: 148 Bit Score: 41.20 E-value: 2.58e-03
Hydrolytic ATP binding site of dynein motor region; This domain is found in human cytoplasmic ...
1238-1564
0e+00
Hydrolytic ATP binding site of dynein motor region; This domain is found in human cytoplasmic dynein-2 proteins. Cytoplasmic dynein-2 (dynein-2) performs intraflagellar transport and is associated with human skeletal ciliopathies. Dyneins share a conserved motor domain that couples cycles of ATP hydrolysis with conformational changes to produce movement. Structural analysis reveal that the motor's ring consists of six AAA+ domains (ATPases associated with various cellular activities: AAA1-AAA6). This is the first site (out of four nucleotide binding sites in the dynein motor) where the movement depends on ATP hydrolysis. When this site is nucleotide free or bound to ADP, the microtubule binding domain (MTBD) binds to the microtubule and the linker adopts the straight post-power-stroke conformation. Upon ATP binding and hydrolysis, the MTBD detaches from the microtubule and the linker is primed into the pre-power-stroke conformation. Dynein's AAA+ domains are each divided into an alpha/beta large subdomain designated with an L and and alpha small subdomains designated with an S. This is the AAA1 large (AAA1L) subdomain with the accompanying small subdomain (AAA1S). AAA1L, AAA1S and AAA2L enclose ADP.vanadate (ADP.Vi, ATP-hydrolysis transition state analogue). The AAA1L sensor-I loop, which varies in position depending on dynein's nucleotide state, swings in to contact AAA2L forming the important AAA1 nucleotide-binding site.
Pssm-ID: 463697 [Multi-domain] Cd Length: 327 Bit Score: 651.47 E-value: 0e+00
Dynein heavy chain, N-terminal region 2; Dyneins are described as motor proteins of eukaryotic ...
676-1110
2.27e-155
Dynein heavy chain, N-terminal region 2; Dyneins are described as motor proteins of eukaryotic cells, as they can convert energy derived from the hydrolysis of ATP to force and movement along cytoskeletal polymers, such as microtubules. This region is found C-terminal to the dynein heavy chain N-terminal region 1 (pfam08385) in many members of this family. No functions seem to have been attributed specifically to this region.
Pssm-ID: 462462 [Multi-domain] Cd Length: 402 Bit Score: 488.31 E-value: 2.27e-155
Dynein heavy chain C-terminal domain; This family represents the C-terminal domain of dynein ...
3634-3935
2.56e-146
Dynein heavy chain C-terminal domain; This family represents the C-terminal domain of dynein heavy chain. This domain is a complex structure comprising six alpha-helices and an incomplete six-stranded antiparallel beta-barrel. The shape of this domain is distinctively flat, spreading over the AAA1, AAA5 and AAA6 domain.
Pssm-ID: 465677 Cd Length: 301 Bit Score: 457.85 E-value: 2.56e-146
ATP-binding dynein motor region; This domain is found in human cytoplasmic dynein-2 proteins. ...
2873-3094
6.14e-129
ATP-binding dynein motor region; This domain is found in human cytoplasmic dynein-2 proteins. Cytoplasmic dynein-2 (dynein-2) performs intraflagellar transport and is associated with human skeletal ciliopathies. Dyneins share a conserved motor domain that couples cycles of ATP hydrolysis with conformational changes to produce movement. Structural analysis reveal that the motor's ring consists of six AAA+ domains (ATPases associated with various cellular activities (AAA1-AAA6). This is the fifth AAA+ domain subdomain AAA5S. Structural analysis reveal that it is the coiled-coil buttress interface. The relative movement of AAA5S together with the stalk (AAA4S), is coupled to rearrangements in the AAA+ ring. Closure of the AAA1 site and the rigid body movement of AAA2-AAA4 force the AAA4/AAA5 interface to close and the AAA6L subdomain to rotate towards the ring centre. The AAA5S subdomain rotates as a unit together with AAA6L, and this movement pulls the buttress relative to the stalk.
Pssm-ID: 463702 [Multi-domain] Cd Length: 222 Bit Score: 404.52 E-value: 6.14e-129
P-loop containing dynein motor region D4; The 380 kDa motor unit of dynein belongs to the AAA ...
2246-2506
8.68e-127
P-loop containing dynein motor region D4; The 380 kDa motor unit of dynein belongs to the AAA class of chaperone-like ATPases. The core of the 380 kDa motor unit contains a concatenated chain of six AAA modules, of which four correspond to the ATP binding sites with P-loop signatures described previously, and two are modules in which the P loop has been lost in evolution. This particular family is the D4 ATP-binding region of the motor.
Pssm-ID: 463701 [Multi-domain] Cd Length: 259 Bit Score: 400.06 E-value: 8.68e-127
P-loop containing dynein motor region; This domain is found in human cytoplasmic dynein-2 ...
1875-2053
2.85e-106
P-loop containing dynein motor region; This domain is found in human cytoplasmic dynein-2 proteins. Cytoplasmic dynein-2 (dynein-2) performs intraflagellar transport and is associated with human skeletal ciliopathies. Dyneins share a conserved motor domain that couples cycles of ATP hydrolysis with conformational changes to produce movement. Structural analysis reveal that the motor's ring consists of six AAA+ domains (ATPases associated with various cellular activities (AAA1-AAA6). This is the third nucleotide binding sites in the dynein motor. However, AAA3 has lost the catalytic residues necessary for ATP hydrolysis (the Walker B glutamate, the arginine finger, sensor-I and sensor-II motifs).
Pssm-ID: 463698 [Multi-domain] Cd Length: 179 Bit Score: 337.44 E-value: 2.85e-106
Dynein heavy chain region D6 P-loop domain; This family represents the C-terminal region of ...
3338-3453
2.76e-67
Dynein heavy chain region D6 P-loop domain; This family represents the C-terminal region of dynein heavy chain. The chain also contains ATPase activity and microtubule binding ability and acts as a motor for the movement of organelles and vesicles along microtubules. Dynein is also involved in cilia and flagella movement. The dynein subunit consists of at least two heavy chains and a number of intermediate and light chains. The 380 kDa motor unit of dynein belongs to the AAA class of chaperone-like ATPases. The core of the 380 kDa motor unit contains a concatenated chain of six AAA modules, of which four correspond to the ATP binding sites with P-loop signatures described previously, and two are modules in which the P loop has been lost in evolution. This C-terminal domain carries the D6 region of the dynein motor where the P-loop has been lost in evolution but the general structure of a potential ATP binding site appears to be retained.
Pssm-ID: 460782 Cd Length: 115 Bit Score: 223.09 E-value: 2.76e-67
Microtubule-binding stalk of dynein motor; the 380 kDa motor unit of dynein belongs to the AAA ...
2519-2840
8.58e-50
Microtubule-binding stalk of dynein motor; the 380 kDa motor unit of dynein belongs to the AAA class of chaperone-like ATPases. The core of the 380 kDa motor unit contains a concatenated chain of six AAA modules, of which four correspond to the ATP binding sites with P-loop signatures described previously, and two are modules in which the P loop has been lost in evolution. This family is the region between D4 and D5 and is the two predicted alpha-helical coiled coil segments that form the stalk supporting the ATP-sensitive microtubule binding component.
Pssm-ID: 463699 [Multi-domain] Cd Length: 344 Bit Score: 182.20 E-value: 8.58e-50
Dynein heavy chain AAA lid domain; This entry corresponds to the extension domain of AAA ...
1731-1866
5.66e-38
Dynein heavy chain AAA lid domain; This entry corresponds to the extension domain of AAA domain 5 in the dynein heavy chain. This domain is composed of 8 alpha helices.
Pssm-ID: 465532 [Multi-domain] Cd Length: 126 Bit Score: 139.72 E-value: 5.66e-38
The AAA+ (ATPases Associated with a wide variety of cellular Activities) superfamily ...
1886-2047
2.89e-07
The AAA+ (ATPases Associated with a wide variety of cellular Activities) superfamily represents an ancient group of ATPases belonging to the ASCE (for additional strand, catalytic E) division of the P-loop NTPase fold. The ASCE division also includes ABC, RecA-like, VirD4-like, PilT-like, and SF1/2 helicases. Members of the AAA+ ATPases function as molecular chaperons, ATPase subunits of proteases, helicases, or nucleic-acid stimulated ATPases. The AAA+ proteins contain several distinct features in addition to the conserved alpha-beta-alpha core domain structure and the Walker A and B motifs of the P-loop NTPases.
Pssm-ID: 99707 [Multi-domain] Cd Length: 151 Bit Score: 52.92 E-value: 2.89e-07
chromosome segregation protein SMC, common bacterial type; SMC (structural maintenance of ...
2490-2620
2.37e-05
chromosome segregation protein SMC, common bacterial type; SMC (structural maintenance of chromosomes) proteins bind DNA and act in organizing and segregating chromosomes for partition. SMC proteins are found in bacteria, archaea, and eukaryotes. This family represents the SMC protein of most bacteria. The smc gene is often associated with scpB (TIGR00281) and scpA genes, where scp stands for segregation and condensation protein. SMC was shown (in Caulobacter crescentus) to be induced early in S phase but present and bound to DNA throughout the cell cycle. [Cellular processes, Cell division, DNA metabolism, Chromosome-associated proteins]
Pssm-ID: 274008 [Multi-domain] Cd Length: 1179 Bit Score: 50.83 E-value: 2.37e-05
ATPases associated with a variety of cellular activities; AAA - ATPases associated with a ...
1905-2021
2.58e-03
ATPases associated with a variety of cellular activities; AAA - ATPases associated with a variety of cellular activities. This profile/alignment only detects a fraction of this vast family. The poorly conserved N-terminal helix is missing from the alignment.
Pssm-ID: 214640 [Multi-domain] Cd Length: 148 Bit Score: 41.20 E-value: 2.58e-03
Database: CDSEARCH/cdd Low complexity filter: no Composition Based Adjustment: yes E-value threshold: 0.01
References:
Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
of the residues that compose this conserved feature have been mapped to the query sequence.
Click on the triangle to view details about the feature, including a multiple sequence alignment
of your query sequence and the protein sequences used to curate the domain model,
where hash marks (#) above the aligned sequences show the location of the conserved feature residues.
The thumbnail image, if present, provides an approximate view of the feature's location in 3 dimensions.
Click on the triangle for interactive 3D structure viewing options.
Functional characterization of the conserved domain architecture found on the query.
Click here to see more details.
This image shows a graphical summary of conserved domains identified on the query sequence.
The Show Concise/Full Display button at the top of the page can be used to select the desired level of detail: only top scoring hits
(labeled illustration) or all hits
(labeled illustration).
Domains are color coded according to superfamilies
to which they have been assigned. Hits with scores that pass a domain-specific threshold
(specific hits) are drawn in bright colors.
Others (non-specific hits) and
superfamily placeholders are drawn in pastel colors.
if a domain or superfamily has been annotated with functional sites (conserved features),
they are mapped to the query sequence and indicated through sets of triangles
with the same color and shade of the domain or superfamily that provides the annotation. Mouse over the colored bars or triangles to see descriptions of the domains and features.
click on the bars or triangles to view your query sequence embedded in a multiple sequence alignment of the proteins used to develop the corresponding domain model.
The table lists conserved domains identified on the query sequence. Click on the plus sign (+) on the left to display full descriptions, alignments, and scores.
Click on the domain model's accession number to view the multiple sequence alignment of the proteins used to develop the corresponding domain model.
To view your query sequence embedded in that multiple sequence alignment, click on the colored bars in the Graphical Summary portion of the search results page,
or click on the triangles, if present, that represent functional sites (conserved features)
mapped to the query sequence.
Concise Display shows only the best scoring domain model, in each hit category listed below except non-specific hits, for each region on the query sequence.
(labeled illustration) Standard Display shows only the best scoring domain model from each source, in each hit category listed below for each region on the query sequence.
(labeled illustration) Full Display shows all domain models, in each hit category below, that meet or exceed the RPS-BLAST threshold for statistical significance.
(labeled illustration) Four types of hits can be shown, as available,
for each region on the query sequence:
specific hits meet or exceed a domain-specific e-value threshold
(illustrated example)
and represent a very high confidence that the query sequence belongs to the same protein family as the sequences use to create the domain model
non-specific hits
meet or exceed the RPS-BLAST threshold for statistical significance (default E-value cutoff of 0.01, or an E-value selected by user via the
advanced search options)
the domain superfamily to which the specific and non-specific hits belong
multi-domain models that were computationally detected and are likely to contain multiple single domains
Retrieve proteins that contain one or more of the domains present in the query sequence, using the Conserved Domain Architecture Retrieval Tool
(CDART).
Modify your query to search against a different database and/or use advanced search options
