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2.A.1.70.8
Uncharacterized MFS porter of 397 aas and 12 TMSs, annotated in Uniprot as ArsP.  The encoding gene is next to genes encoding ArsH (Q1LRL2), an NADPH-dependent FMN reductase, ArsC1, an arsenate reductase (Q1LRL1) and an arsenite efflux pump, ArsB or Acr3 of 10 TMSs (ArsB; Q1LRL0; ACR family, TC# 2.A.59). This MFS family shows greatest similarity with families 2.A.1.11 and 2.A.1.13, both which transport anionic speices, for example, oxalate, formate and pyruvate (TC# 2.A.1.11) and monocarboxylates (TC# 2.A.1.13).  It is 32% identical and 52% similar to ArsK (TC# 2.A.1.70.9) which is an arsenite/antimonite exporter (Shi et al. 2018).

Accession Number:Q1LRL3
Protein Name:Permease of the Major Facilitator Family
Length:397
Molecular Weight:40512.00
Species:Cupriavidus metallidurans (strain ATCC 43123 / DSM 2839 / NBRC 102507 / CH34) [266264]
Substrate

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Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MEPSSSVIAR LGVAQTLAWG STYYLPAMLA TPMAQDLGVS TPTIFAAFSV ALVVSALLGP 
61:	AAGRMIDRTG GRSVLVATSL VFTIGLARLG VAQGVVGLFA AWVILGIGMG AGLYEAAFAT 
121:	LVALYGNRSR GAITGITLIA GFASTVGWPL STSMEAHIGW RGACLSWAAL HLTLGLALNL 
181:	SIPRVAATAT APSRPTSQTG SALTHHADER SQRTASYALA FVFAATWFIS TAMAAHLPRL 
241:	LQAGGASLAT AVMVGALIGP AQVGARILEF GLLRKVHPLL SARIAAALHP LGALAFGLVG 
301:	APAAALFGVL HGAGNGILTI AKGTLPLVIF GPGGYGHRQG VLMVPARVAQ ALAPWIFGMC 
361:	LDQFGAKSLW LSSALGMMAI LTLMAVRQSA PLKTSTT