SitesBLAST

SitesBLAST – Find functional sites

SitesBLAST

Comparing Pf1N1B4_3673 Acetate permease ActP (cation/acetate symporter) to proteins with known functional sites using BLASTp with E ≤ 0.001.

Or try Sites on a Tree, PaperBLAST, Conserved Domains, or compare to all protein structures

Found 3 hits to proteins with known functional sites (download)

P07117 Sodium/proline symporter; Proline carrier; Proline permease; Propionate transporter from Escherichia coli (strain K12) (see 4 papers)
25% identity, 82% coverage: 33:482/552 of query aligns to 3:462/502 of P07117

query
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P07117

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R257 (= R286) mutation to C: Sodium-independent binding affinity for proline.
C281 (≠ T314) mutation to S: Does not affect proline uptake activity. Confers resistance to N-ethylmaleimide. Na(+)-dependent proline binding activity is similar to wild-type carrier.
C344 (≠ G376) mutation to S: Small decrease in proline uptake activity. Confers resistance to N-ethylmaleimide. Exhibits low Na(+)-dependent proline binding.
C349 (≠ G381) mutation to S: Does not affect proline uptake activity. Sensitive to N-ethylmaleimide. Na(+)-dependent proline binding activity is similar to wild-type carrier.
R376 (≠ K409) mutation R->E,Q: No change in activity.; mutation to K: Loss of activity.

5nv9A Substrate-bound outward-open state of a na+-coupled sialic acid symporter reveals a novel na+-site (see paper)
22% identity, 53% coverage: 44:334/552 of query aligns to 13:304/480 of 5nv9A

query
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5nv9A

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binding sodium ion: A52 (≠ G83), T53 (≠ D84), L55 (≠ M86), S56 (= S87), V174 (≠ T206), D178 (≠ Q210)
binding N-acetyl-beta-neuraminic acid: T54 (≠ Y85), L55 (≠ M86), S56 (= S87), I58 (≠ A89), T59 (≠ S90), G77 (≠ Y108), Q78 (≠ S109), R131 (≠ L164), F239 (vs. gap), V277 (≠ I307)

Sites not aligning to the query:

binding sodium ion: 335, 338, 338, 339, 341, 342

Q92911 Sodium/iodide cotransporter; Na(+)/I(-) cotransporter; Natrium iodide transporter; Sodium-iodide symporter; Na(+)/I(-) symporter; Solute carrier family 5 member 5 from Homo sapiens (Human) (see 3 papers)
25% identity, 29% coverage: 59:220/552 of query aligns to 41:201/643 of Q92911

query
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Q92911

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A102 (≠ L120) natural variant: A -> P

Sites not aligning to the query:

226 mutation H->A,D,E,K: Significant loss of iodide transport activity but no effect on its localization to the cell membrane.
237 D→A: Loss of localization to the cell membrane, significant loss of iodide transport activity but no effect on homodimerization.
242 Required for homodimerization; Y→A: Loss of localization to the cell membrane, significant loss of iodide transport activity but no effect on homodimerization. Reduced homodimerization; when associated with A-471. Loss of iodide transport activity; when associated with F-535.
243 Required for homodimerization; T→A: Loss of localization to the cell membrane, significant loss of iodide transport activity but no effect on homodimerization. Reduced homodimerization; when associated with A-471.
471 Required for homodimerization; Q→A: No effect on localization to the cell membrane, iodide transport activity and homodimerization. Significant loss of homodimerization; when associated with A-242 or A243.
525 A→F: Loss of localization to the cell membrane, significant loss of iodide transport activity but no effect on homodimerization. Loss of iodide transport activity; when associated with A-242.
536 T → Q: requires 2 nucleotide substitutions
556 S → Q: requires 2 nucleotide substitutions

Query Sequence

>Pf1N1B4_3673 Acetate permease ActP (cation/acetate symporter)
MIRRLMALLSIAAFAPGVWAAEALTGAVQKQPLNVSAILMFVAFVGATLCITYWASKRNN
SAADYYAAGGKITGFQNGLAIAGDYMSAASFLGISALVFTSGYDGLIYSIGFLVGWPIIL
FLIAERLRNLGKYTFADVASYRLGQTQIRSLSACGSLVVVAFYLIAQMVGAGKLIQLLFG
LDYHVAVILVGILMCMYVLFGGMLATTWVQIIKAVLLLSGASFMALMVMKHVNFDFNALF
SEAIKVHPKGEAIMSPGGLVKDPISAFSLGLALMFGTAGLPHILMRFFTVSDAKEARKSV
LYATGFIGYFYILTFIIGFGAILLVSTNPAFKDAAGALMGGNNMAAVHLANAVGGSVFLG
FISAVAFATILAVVAGLTLAGASAVSHDLYASVIKKGKANEKDEIRVSKITTIALAVLAI
GLGILFEKQNIAFMVGLAFSIAASCNFPVLLLSMYWKKLTTRGAMVGGWLGLVSAVGLMV
LGPTIWVQILGHEKAIFPYEYPALFSMAIAFVGIWFFSVTDKSAEGVNERALFFPQFVRS
QTGLGASGAVSH

Or try a new SitesBLAST search

SitesBLAST's Database

SitesBLAST's database includes (1) SwissProt entries with experimentally-supported functional features; and (2) protein structures with bound ligands, from the BioLip database.

by Morgan Price, Arkin group
Lawrence Berkeley National Laboratory