Cytochrome P450 3A7

Details

Name
Cytochrome P450 3A7
Synonyms
  • 1.14.14.1
  • CYPIIIA7
  • Cytochrome P450-HFLA
Gene Name
CYP3A7
Organism
Humans
Amino acid sequence
>lcl|BSEQ0006949|Cytochrome P450 3A7
MDLIPNLAVETWLLLAVSLILLYLYGTRTHGLFKKLGIPGPTPLPFLGNALSFRKGYWTF
DMECYKKYRKVWGIYDCQQPMLAITDPDMIKTVLVKECYSVFTNRRPFGPVGFMKNAISI
AEDEEWKRIRSLLSPTFTSGKLKEMVPIIAQYGDVLVRNLRREAETGKPVTLKHVFGAYS
MDVITSTSFGVSIDSLNNPQDPFVENTKKLLRFNPLDPFVLSIKVFPFLTPILEALNITV
FPRKVISFLTKSVKQIKEGRLKETQKHRVDFLQLMIDSQNSKDSETHKALSDLELMAQSI
IFIFAGYETTSSVLSFIIYELATHPDVQQKVQKEIDTVLPNKAPPTYDTVLQLEYLDMVV
NETLRLFPVAMRLERVCKKDVEINGMFIPKGVVVMIPSYVLHHDPKYWREPEKFLPERFS
KKNKDNIDPYIYTPFGSGPRNCIGMRFALVNMKLALVRVLQNFSFKPCKETQIPLKLRFG
GLLLTEKPIVLKAESRDETVSGA
Number of residues
503
Molecular Weight
57525.03
Theoretical pI
9.59
GO Classification
Functions
aromatase activity / heme binding / iron ion binding / monooxygenase activity / oxygen binding
Processes
small molecule metabolic process / xenobiotic metabolic process
Components
endoplasmic reticulum membrane
General Function
Oxygen binding
Specific Function
Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It oxidizes a variety of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics.
Pfam Domain Function
Transmembrane Regions
Not Available
Cellular Location
Endoplasmic reticulum membrane
Gene sequence
>lcl|BSEQ0019448|Cytochrome P450 3A7 (CYP3A7)
ATGGATCTCATCCCAAACTTGGCCGTGGAAACCTGGCTTCTCCTGGCTGTCAGCCTGATA
CTCCTCTATCTATATGGAACCCGTACACATGGACTTTTTAAGAAGCTTGGAATTCCAGGG
CCCACACCTCTGCCTTTTTTGGGAAATGCTTTGTCCTTCCGTAAGGGCTATTGGACGTTT
GACATGGAATGTTATAAAAAGTATAGAAAAGTCTGGGGTATTTATGACTGTCAACAGCCT
ATGCTGGCTATCACAGATCCCGACATGATCAAAACAGTGCTAGTGAAAGAATGTTATTCT
GTCTTCACAAACCGGAGGCCTTTCGGGCCAGTGGGATTTATGAAAAATGCCATCTCTATA
GCTGAGGATGAAGAATGGAAGAGAATACGATCATTGCTGTCTCCAACATTCACCAGCGGA
AAACTCAAGGAGATGGTCCCTATCATTGCCCAGTATGGAGATGTGTTGGTGAGAAATCTG
AGGCGGGAAGCAGAGACAGGCAAGCCTGTCACCTTGAAACACGTCTTTGGGGCCTACAGC
ATGGATGTGATCACTAGCACATCATTTGGAGTGAGCATCGACTCTCTCAACAATCCACAA
GACCCCTTTGTGGAAAACACCAAGAAGCTTTTAAGATTTAATCCATTAGATCCATTCGTT
CTCTCAATAAAAGTCTTTCCATTCCTTACCCCAATTCTTGAAGCATTAAATATCACTGTG
TTTCCAAGAAAAGTTATAAGTTTTCTAACAAAATCTGTAAAACAGATAAAAGAAGGTCGC
CTCAAAGAGACACAAAAGCACCGAGTGGATTTCCTTCAGCTGATGATTGACTCTCAGAAT
TCAAAAGACTCTGAGACCCACAAAGCTCTGTCTGATCTGGAGCTCATGGCCCAATCAATT
ATCTTTATTTTTGCTGGCTATGAAACCACGAGCAGTGTTCTCTCCTTCATTATATATGAA
CTGGCCACTCACCCTGATGTCCAGCAGAAAGTGCAGAAGGAAATTGATACAGTTTTACCC
AATAAGGCACCACCCACCTATGATACTGTGCTACAGTTGGAGTATCTTGACATGGTGGTG
AATGAAACACTCAGATTATTCCCAGTTGCTATGAGACTTGAGAGGGTCTGCAAAAAAGAT
GTTGAAATCAATGGGATGTTTATTCCCAAAGGGGTGGTGGTGATGATTCCAAGCTATGTT
CTTCATCATGACCCAAAGTACTGGACAGAGCCTGAGAAGTTCCTCCCTGAAAGGTTCAGT
AAAAAGAACAAGGACAACATAGATCCTTACATATACACACCCTTTGGAAGTGGACCCAGA
AACTGCATTGGCATGAGGTTTGCTCTCGTGAACATGAAACTTGCTCTAGTCAGAGTCCTT
CAGAACTTCTCCTTCAAACCTTGTAAAGAAACACAGATCCCCCTGAAATTACGCTTTGGA
GGACTTCTTCTAACAGAAAAACCCATTGTTCTAAAGGCTGAGTCAAGGGATGAGACCTTT
GTAGATATGGAGCCCATTCACATGGACTTTTTAAGAAGCTTGGCATTCCAGGGCCCACAC
CTCTGCTTTTTTTGGGAACTACTTTGTCCTACCATCAGATCCCGCTGA
Chromosome Location
7
Locus
7q21-q22.1
External Identifiers
ResourceLink
UniProtKB IDP24462
UniProtKB Entry NameCP3A7_HUMAN
GenBank Protein ID220149
GenBank Gene IDD00408
HGNC IDHGNC:2640
General References
  1. Komori M, Nishio K, Ohi H, Kitada M, Kamataki T: Molecular cloning and sequence analysis of cDNA containing the entire coding region for human fetal liver cytochrome P-450. J Biochem. 1989 Feb;105(2):161-3. [Article]
  2. Finta C, Zaphiropoulos PG: The human cytochrome P450 3A locus. Gene evolution by capture of downstream exons. Gene. 2000 Dec 30;260(1-2):13-23. [Article]
  3. Gellner K, Eiselt R, Hustert E, Arnold H, Koch I, Haberl M, Deglmann CJ, Burk O, Buntefuss D, Escher S, Bishop C, Koebe HG, Brinkmann U, Klenk HP, Kleine K, Meyer UA, Wojnowski L: Genomic organization of the human CYP3A locus: identification of a new, inducible CYP3A gene. Pharmacogenetics. 2001 Mar;11(2):111-21. [Article]
  4. Scherer SW, Cheung J, MacDonald JR, Osborne LR, Nakabayashi K, Herbrick JA, Carson AR, Parker-Katiraee L, Skaug J, Khaja R, Zhang J, Hudek AK, Li M, Haddad M, Duggan GE, Fernandez BA, Kanematsu E, Gentles S, Christopoulos CC, Choufani S, Kwasnicka D, Zheng XH, Lai Z, Nusskern D, Zhang Q, Gu Z, Lu F, Zeesman S, Nowaczyk MJ, Teshima I, Chitayat D, Shuman C, Weksberg R, Zackai EH, Grebe TA, Cox SR, Kirkpatrick SJ, Rahman N, Friedman JM, Heng HH, Pelicci PG, Lo-Coco F, Belloni E, Shaffer LG, Pober B, Morton CC, Gusella JF, Bruns GA, Korf BR, Quade BJ, Ligon AH, Ferguson H, Higgins AW, Leach NT, Herrick SR, Lemyre E, Farra CG, Kim HG, Summers AM, Gripp KW, Roberts W, Szatmari P, Winsor EJ, Grzeschik KH, Teebi A, Minassian BA, Kere J, Armengol L, Pujana MA, Estivill X, Wilson MD, Koop BF, Tosi S, Moore GE, Boright AP, Zlotorynski E, Kerem B, Kroisel PM, Petek E, Oscier DG, Mould SJ, Dohner H, Dohner K, Rommens JM, Vincent JB, Venter JC, Li PW, Mural RJ, Adams MD, Tsui LC: Human chromosome 7: DNA sequence and biology. Science. 2003 May 2;300(5620):767-72. Epub 2003 Apr 10. [Article]
  5. Gerhard DS, Wagner L, Feingold EA, Shenmen CM, Grouse LH, Schuler G, Klein SL, Old S, Rasooly R, Good P, Guyer M, Peck AM, Derge JG, Lipman D, Collins FS, Jang W, Sherry S, Feolo M, Misquitta L, Lee E, Rotmistrovsky K, Greenhut SF, Schaefer CF, Buetow K, Bonner TI, Haussler D, Kent J, Kiekhaus M, Furey T, Brent M, Prange C, Schreiber K, Shapiro N, Bhat NK, Hopkins RF, Hsie F, Driscoll T, Soares MB, Casavant TL, Scheetz TE, Brown-stein MJ, Usdin TB, Toshiyuki S, Carninci P, Piao Y, Dudekula DB, Ko MS, Kawakami K, Suzuki Y, Sugano S, Gruber CE, Smith MR, Simmons B, Moore T, Waterman R, Johnson SL, Ruan Y, Wei CL, Mathavan S, Gunaratne PH, Wu J, Garcia AM, Hulyk SW, Fuh E, Yuan Y, Sneed A, Kowis C, Hodgson A, Muzny DM, McPherson J, Gibbs RA, Fahey J, Helton E, Ketteman M, Madan A, Rodrigues S, Sanchez A, Whiting M, Madari A, Young AC, Wetherby KD, Granite SJ, Kwong PN, Brinkley CP, Pearson RL, Bouffard GG, Blakesly RW, Green ED, Dickson MC, Rodriguez AC, Grimwood J, Schmutz J, Myers RM, Butterfield YS, Griffith M, Griffith OL, Krzywinski MI, Liao N, Morin R, Palmquist D, Petrescu AS, Skalska U, Smailus DE, Stott JM, Schnerch A, Schein JE, Jones SJ, Holt RA, Baross A, Marra MA, Clifton S, Makowski KA, Bosak S, Malek J: The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC). Genome Res. 2004 Oct;14(10B):2121-7. [Article]
  6. Wrighton SA, Vandenbranden M: Isolation and characterization of human fetal liver cytochrome P450HLp2: a third member of the P450III gene family. Arch Biochem Biophys. 1989 Jan;268(1):144-51. [Article]
  7. Komori M, Nishio K, Fujitani T, Ohi H, Kitada M, Mima S, Itahashi K, Kamataki T: Isolation of a new human fetal liver cytochrome P450 cDNA clone: evidence for expression of a limited number of forms of cytochrome P450 in human fetal livers. Arch Biochem Biophys. 1989 Jul;272(1):219-25. [Article]

Drug Relations

Drug Relations
DrugBank IDNameDrug groupPharmacological action?ActionsDetails
DB00199Erythromycinapproved, investigational, vet_approvednosubstrateinhibitorDetails
DB00908Quinidineapproved, investigationalunknownsubstrateDetails
DB00404Alprazolamapproved, illicit, investigationalunknownsubstrateDetails
DB00829Diazepamapproved, illicit, investigational, vet_approvedunknownsubstrateDetails
DB00897Triazolamapproved, investigationalunknownsubstrateDetails
DB00224IndinavirapprovedunknowninhibitorDetails
DB00220NelfinavirapprovednoinhibitorDetails
DB01232Saquinavirapproved, investigationalunknownsubstrateinhibitorDetails
DB00604Cisaprideapproved, investigational, withdrawnunknownsubstrateDetails
DB00637Astemizoleapproved, withdrawnunknownsubstrateDetails
DB01114ChlorpheniramineapprovedunknownsubstrateDetails
DB00342Terfenadineapproved, withdrawnunknownsubstrateDetails
DB00343Diltiazemapproved, investigationalunknownsubstrateinhibitorDetails
DB01023Felodipineapproved, investigationalunknownsubstrateDetails
DB00528Lercanidipineapproved, investigationalunknownsubstrateDetails
DB00401NisoldipineapprovedunknownsubstrateDetails
DB01054Nitrendipineapproved, investigationalunknownsubstrateDetails
DB01076AtorvastatinapprovednosubstrateDetails
DB00439Cerivastatinapproved, withdrawnunknownsubstrateDetails
DB00783Estradiolapproved, investigational, vet_approvedunknownsubstrateDetails
DB00741Hydrocortisoneapproved, vet_approvedunknownsubstrateDetails
DB00396Progesteroneapproved, vet_approvedunknownsubstrateinhibitorDetails
DB00624Testosteroneapproved, investigationalunknownsubstrateDetails
DB00802Alfentanilapproved, illicitunknownsubstrateDetails
DB01238Aripiprazoleapproved, investigationalnosubstrateDetails
DB00490Buspironeapproved, investigationalunknownsubstrateDetails
DB01166Cilostazolapproved, investigationalunknownsubstrateDetails
DB00250Dapsoneapproved, investigationalunknownsubstrateDetails
DB01234Dexamethasoneapproved, investigational, vet_approvedunknownsubstrateinducerDetails
DB00514DextromethorphanapprovedunknownsubstrateDetails
DB01248Docetaxelapproved, investigationalunknownsubstrateDetails
DB01184Domperidoneapproved, investigational, vet_approvedunknownsubstrateDetails
DB00813Fentanylapproved, illicit, investigational, vet_approvedunknownsubstrateDetails
DB01216FinasterideapprovedunknownsubstrateDetails
DB00619ImatinibapprovednosubstrateinhibitorDetails
DB00502HaloperidolapprovedunknownsubstrateDetails
DB00762Irinotecanapproved, investigationalunknownsubstrateDetails
DB01227Levacetylmethadolapproved, investigational, withdrawnunknownsubstrateDetails
DB00281Lidocaineapproved, vet_approvedunknownsubstrateDetails
DB00333MethadoneapprovedunknownsubstrateDetails
DB00731Nateglinideapproved, investigationalunknownsubstrateDetails
DB00904Ondansetronapproved, withdrawnunknownsubstrateDetails
DB01100PimozideapprovedunknownsubstrateDetails
DB00571Propranololapproved, investigationalunknownsubstrateDetails
DB00468QuinineapprovedunknownsubstrateDetails
DB00938SalmeterolapprovedunknownsubstrateDetails
DB00203Sildenafilapproved, investigationalunknownsubstrateDetails
DB00877Sirolimusapproved, investigationalnosubstrateDetails
DB00398Sorafenibapproved, investigationalunknownsubstrateDetails
DB01268Sunitinibapproved, investigationalunknownsubstrateDetails
DB00675TamoxifenapprovedunknownsubstrateDetails
DB01229Paclitaxelapproved, vet_approvedunknownsubstrateDetails
DB06287TemsirolimusapprovedunknownsubstrateDetails
DB00656Trazodoneapproved, investigationalunknownsubstrateDetails
DB00541Vincristineapproved, investigationalunknownsubstrateDetails
DB00962Zaleplonapproved, illicit, investigationalunknownsubstrateDetails
DB01167Itraconazoleapproved, investigationalnoinhibitorDetails
DB00446Chloramphenicolapproved, vet_approved, withdrawnunknowninhibitorDetails
DB00537Ciprofloxacinapproved, investigationalunknowninhibitorDetails
DB00705DelavirdineapprovedunknowninhibitorDetails
DB06730GestodeneinvestigationalunknowninhibitorDetails
DB01388Mibefradilinvestigational, withdrawnunknowninhibitorDetails
DB06731SeproxetineinvestigationalunknowninhibitorDetails
DB00582VoriconazoleapprovedunknownsubstrateinhibitorDetails
DB00921Buprenorphineapproved, illicit, investigational, vet_approvedunknownsubstrateDetails
DB00257Clotrimazoleapproved, vet_approvedunknowninducerDetails
DB00458ImipramineapprovedunknownsubstrateDetails
DB00780PhenelzineapprovedunknowninhibitorDetails
DB00252Phenytoinapproved, vet_approvednosubstrateinducerDetails
DB01045RifampicinapprovedunknowninducerDetails
DB00197Troglitazoneapproved, investigational, withdrawnunknowninhibitorDetails
DB00588Fluticasone propionateapprovedunknownsubstrateDetails
DB00755Tretinoinapproved, investigational, nutraceuticalunknownsubstrateDetails
DB04946IloperidoneapprovedunknownsubstrateDetails
DB01708Prasteroneapproved, investigational, nutraceuticalunknownsubstrateinhibitorDetails
DB05804Prasterone sulfateinvestigationalunknownsubstrateDetails
DB01174Phenobarbitalapproved, investigationalnoinducerDetails
DB09102Daclatasvirapproved, investigationalunknownsubstrateDetails
DB09054IdelalisibapprovednosubstrateinhibitorDetails
DB09065CobicistatapprovednosubstrateDetails
DB06412Oxymetholoneapproved, illicitnoinhibitorDetails
DB00503Ritonavirapproved, investigationalnosubstrateinhibitorDetails
DB06595Midostaurinapproved, investigationalunknowninducerDetails
DB11574ElbasvirapprovedunknownsubstrateDetails
DB12483Copanlisibapproved, investigationalnosubstrateDetails
DB12332Rucaparibapproved, investigationalnoinhibitorDetails
DB13943Testosterone cypionateapprovedunknownsubstrateDetails
DB13944Testosterone enanthateapprovedunknownsubstrateDetails
DB13946Testosterone undecanoateapproved, investigationalunknownsubstrateDetails
DB13952Estradiol acetateapproved, investigational, vet_approvedunknownsubstrateDetails
DB13953Estradiol benzoateapproved, investigational, vet_approvedunknownsubstrateDetails
DB13954Estradiol cypionateapproved, investigational, vet_approvedunknownsubstrateDetails
DB13955Estradiol dienanthateapproved, investigational, vet_approvedunknownsubstrateDetails
DB13956Estradiol valerateapproved, investigational, vet_approvedunknownsubstrateDetails
DB14009Medical Cannabisexperimental, investigationalunknowninhibitorDetails
DB00625Efavirenzapproved, investigationalunknowninducerDetails
DB13179TroleandomycinapprovedunknowninhibitorDetails
DB14185Aripiprazole lauroxilapproved, investigationalunknownsubstrateDetails
DB14538Hydrocortisone aceponateexperimental, vet_approvedunknownsubstrateDetails
DB14539Hydrocortisone acetateapproved, vet_approvedunknownsubstrateDetails
DB14540Hydrocortisone butyrateapproved, vet_approvedunknownsubstrateDetails
DB14541Hydrocortisone cypionateapproved, investigational, vet_approvedunknownsubstrateDetails
DB14542Hydrocortisone phosphateapproved, vet_approvedunknownsubstrateDetails
DB14543Hydrocortisone probutateapproved, vet_approvedunknownsubstrateDetails
DB14544Hydrocortisone valerateapproved, vet_approvedunknownsubstrateDetails
DB13867Fluticasoneapproved, experimentalunknownsubstrateDetails
DB08906Fluticasone furoateapprovednosubstrateDetails
DB00916MetronidazoleapprovedunknownsubstrateDetails
DB00683Midazolamapproved, illicitunknownsubstrateDetails
DB00238NevirapineapprovedunknownsubstrateDetails
DB01016GlyburideapprovedunknownsubstrateDetails
DB00620Triamcinoloneapproved, vet_approvedunknownsubstrateinducerDetails
DB09061Cannabidiolapproved, investigationalunknowninhibitorDetails
DB14011NabiximolsinvestigationalunknowninhibitorDetails
DB01224QuetiapineapprovedunknownDetails
DB00443Betamethasoneapproved, vet_approvedunknownDetails
DB14649Dexamethasone acetateapproved, investigational, vet_approvedunknownsubstrateinducerDetails
DB15305Risdiplamapproved, investigationalunknownsubstrateDetails
DB00170Menadioneapproved, nutraceuticalunknowninhibitorDetails
DB01059NorfloxacinapprovednoinhibitorDetails
DB16390Mobocertinibapproved, investigationalunknownsubstrateDetails
DB09061Cannabidiolapproved, investigationalnoinhibitorDetails
DB00470Dronabinolapproved, illicitnoinhibitorDetails
DB14737Cannabinolexperimental, investigationalunknowninhibitorDetails
DB00349Clobazamapproved, illicitnosubstrateDetails
DB09065CobicistatapprovedyesinhibitorDetails
DB12874Quizartinibapproved, investigationalnosubstrateDetails
DB11718Encorafenibapproved, investigationalnoinhibitorDetails
DB01072Atazanavirapproved, investigationalnoinhibitorDetails
DB11679Fruquintinibapproved, investigationalnosubstrateDetails
DB00648MitotaneapprovedunknowninducerDetails
DB00176Fluvoxamineapproved, investigationalunknowninhibitorDetails
DB00599Thiopentalapproved, vet_approvedunknownsubstrateDetails
DB08930DolutegravirapprovednosubstrateDetails
DB06595Midostaurinapproved, investigationalunknownsubstrateinhibitorinducerDetails
DB13174RheinexperimentalunknowninhibitorDetails
DB11994Diacereinapproved, investigationalunknowninhibitorDetails
DB11605MyrrhapprovedunknowninducerDetails
DB11691Naldemedineapproved, investigationalnosubstrateDetails
DB13878Pibrentasvirapproved, investigationalunknowninhibitorDetails
DB13879Glecaprevirapproved, investigationalunknownsubstrateinhibitorDetails
DB09205Moxisylyteapproved, investigationalnosubstrateDetails
DB09568Omega-3-carboxylic acidsapproved, investigationalnosubstrateDetails
DB01601LopinavirapprovednoinhibitorDetails
DB01149Nefazodoneapproved, withdrawnnoinhibitorDetails
DB13141Ambroxol acefyllinateexperimental, investigationalnosubstrateDetails
DB11792MirodenafilinvestigationalunknownsubstrateDetails
DB11979Elagolixapproved, investigationalnosubstrateDetails
DB08865Crizotinibapproved, investigationalunknownsubstrateinhibitorDetails
DB11703Acalabrutinibapproved, investigationalunknownsubstrateDetails
DB12267Brigatinibapproved, investigationalunknowninducerDetails
DB12307ForetinibinvestigationalunknownsubstrateDetails
DB12130Lorlatinibapproved, investigationalunknownsubstrateinhibitorDetails
DB00780PhenelzineapprovedunknowninhibitorDetails
DB00593EthosuximideapprovedunknownsubstrateDetails
DB01201Rifapentineapproved, investigationalunknowninducerDetails
DB00643Mebendazoleapproved, vet_approvedunknownsubstrateDetails
DB11757Istradefyllineapproved, investigationalunknowninhibitorDetails
DB00334Olanzapineapproved, investigationalunknowninhibitorDetails
DB09212LoxoprofenapprovedunknownsubstrateDetails
DB00635Prednisoneapproved, vet_approvedunknowninducerDetails
DB01222BudesonideapprovedunknownsubstrateinducerDetails
DB00959Methylprednisoloneapproved, vet_approvedunknownsubstrateinducerDetails
DB11951Lemborexantapproved, investigationalunknowninhibitorinducerDetails
DB12887Tazemetostatapproved, investigationalunknownsubstrateDetails
DB14631Prednisolone phosphateapproved, vet_approvedunknowninducerDetails
DB11652Tucatinibapproved, investigationalunknownsubstrateDetails
DB15035Zanubrutinibapproved, investigationalunknownsubstrateDetails
DB15685Selpercatinibapproved, investigationalunknowninhibitorDetails
DB00409Remoxiprideapproved, withdrawnunknowninhibitorDetails
DB15305Risdiplamapproved, investigationalunknowninhibitorDetails
DB06448Lonafarnibapproved, investigationalnosubstrateinhibitorDetails
DB11853Relugolixapproved, investigationalunknownsubstrateinducerDetails
DB01586Ursodeoxycholic acidapproved, investigationalunknowninducerDetails
DB11742Ebastineapproved, investigationalunknownsubstrateDetails
DB15569Sotorasibapproved, investigationalunknownsubstrateDetails
DB04216Quercetinexperimental, investigationalnoinhibitorDetails
DB00647Dextropropoxypheneapproved, illicit, investigational, withdrawnunknowninhibitorDetails
DB00333MethadoneapprovednoinhibitorDetails
DB01167Itraconazoleapproved, investigationalnoinhibitorDetails
DB16536Birch bark extractapproved, experimentalunknowninhibitorDetails
DB12070Letermovirapproved, investigationalnosubstrateinhibitorDetails