Q9Y6R1 (S4A4_HUMAN) Homo sapiens (Human)

Electrogenic sodium bicarbonate cotransporter 1 UniProtKBInterProSTRINGInteractive Modelling

1079 aa; Sequence (Fasta) ; (Isoform 2; Isoform 3; Isoform 4; Isoform 5; ) Identical sequences: Gorilla gorilla gorilla: G3R1F8

Sequence Features

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 342R -> S (in pRTA-OA; decreased localization to the basolateral membrane; mistargeting to the apical membrane probably explains the loss of the cotransporter activity; dbSNP:rs121908856) VAR_024751 dbSNP
 471S -> L (in pRTA-OA; mistargeting to the apical membrane and altered function) VAR_024752
 529T -> S (in pRTA-OA; decreased cotransporter activity) VAR_024753
 530G -> R (in pRTA-OA; decreased cotransporter activity; no effect on localization to the basolateral membrane) VAR_071661
 554R -> H (in pRTA-OA; mistargeting and altered function; dbSNP:rs121908857) VAR_024754 dbSNP
 566L -> P (in pRTA-OA; loss of localization to the plasma membrane; the retention in the cytoplasm probably explains the loss of the cotransporter activity) VAR_071662
 843A -> V (in pRTA-OA; altered function) VAR_024755
 925R -> C (in pRTA-OA; altered function; dbSNP:rs1203164637) VAR_024756 dbSNP
 467-491Helical; Name=1
 502-520Helical; Name=2
 522-542Discontinuously helical; Name=3
 551-571Helical; Name=4
 586-609Helical; Name=5
 693-710Helical; Name=6
 726-745Helical; Name=7
 780-807Helical; Name=8
 820-836Helical; Name=9
 838-855Discontinuously helical; Name=10
 878-894Helical; Name=11
 902-918Helical; Name=12
 961-986Discontinuously helical
 627-629
 674-686
 138-387Band 3 cytoplasmic domain
IPR013769PF07565
 436-956Bicarbonate transporter, C-terminal
IPR011531PF00955

Sequence Alignments

Experimental structures

DescriptionOligo-stateLigandsStructureRange
CryoEM structure of human SLC4A4 sodium-coupled acid-base transporter NBCe1homo-2-mer 6caa445-1009
Assess

Homology models

Oligo-stateQMEANTemplateRangeSeq id (%)Ligands
homo-2-mer -4.47 4ky9.1.A107-397
35.09
Assess

Homology models built on isoform sequence

IsoformOligo-stateLigandsQMEANTemplateRangeSeq id (%)
Isoform 2homo-2-mer-4.504ky9.1.A63-353
35.09
Assess
Isoform 2monomer-3.951bzk.1.A409-450
48.84
Assess
Isoform 3homo-2-mer-4.454ky9.1.A63-353
35.09
Assess
Isoform 3monomer-3.951bzk.1.A409-450
48.84
Assess
Isoform 4homo-2-mer-4.584ky9.1.A107-397
34.74
Assess
Isoform 4monomer-3.851bzk.1.A453-494
48.84
Assess
Isoform 5homo-2-mer-4.354ky9.1.A107-397
35.09
Assess
Isoform 5monomer-3.951bzk.1.A453-494
48.84
Assess