Descriptions

Best3, a member of the bestrophin Cl- channel family, is a candidate of cGMP-sensitive, Ca2+-activated Cl- channel in vascular smooth muscle cells. Best3 has an autoinhibitory domain (356-362) and deletion of the domain robustly activates Best3 channel.
Best3 also has a C-terminal membrane association domain (368-383) and basic residue domain (384-397). The basic residue domain (384–397) is also partially involved in the membrane association. Dissociation of Best3 from membrane activates Best3.

Autoinhibitory domains (AIDs)

Target domain

1-486 (Bestrophin)

Relief mechanism

Ligand binding

Assay

Deletion assay, Mutagenesis experiment

Accessory elements

No accessory elements

Autoinhibited structure

Activated structure

1 structures for Q6H1V1

Entry ID Method Resolution Chain Position Source
AF-Q6H1V1-F1 Predicted AlphaFoldDB

37 variants for Q6H1V1

Variant ID(s) Position Change Description Diseaes Association Provenance
rs3389126167 10 A>V No EVA
rs3389104069 36 F>C No EVA
rs3389130663 37 I>N No EVA
rs3389126172 38 V>G No EVA
rs3389126203 98 V>M No EVA
rs3389124307 109 L>F No EVA
rs3401772199 116 G>A No EVA
rs3389129370 215 N>K No EVA
rs3389115685 217 Y>N No EVA
rs3389126182 234 L>Q No EVA
rs3389104045 301 D>V No EVA
rs3389129347 354 Y>C No EVA
rs3389130654 355 C>S No EVA
rs3389130692 370 G>W No EVA
rs244503351 372 N>D No EVA
rs3389101062 428 S>C No EVA
rs3389115752 430 A>T No EVA
rs3389137129 430 A>V No EVA
rs249610994 431 R>Q No EVA
rs3389129295 444 G>D No EVA
rs3401732630 464 M>L No EVA
rs3389120815 498 V>I No EVA
rs30914866 510 A>V No EVA
rs263317988 515 S>N No EVA
rs3389127440 517 Q>H No EVA
rs225459675 521 T>A No EVA
rs3389124317 562 R>G No EVA
rs3389137134 572 E>G No EVA
rs250715059 581 S>N No EVA
rs3389093500 589 R>K No EVA
rs249130176 615 P>A No EVA
rs249130176 615 P>S No EVA
rs257847231 627 S>A No EVA
rs226810481 630 A>S No EVA
rs3410930472 642 K>M No EVA
rs3389115738 652 E>D No EVA
rs3389127557 661 T>A No EVA

No associated diseases with Q6H1V1

No regional properties for Q6H1V1

Type Name Position InterPro Accession
No domain, repeats, and functional sites for Q6H1V1

Functions

Description
EC Number
Subcellular Localization
  • [Isoform 1]: Cell membrane
  • Localized also in punctate structures in the cytosolic compartment
PANTHER Family PTHR10736 BESTROPHIN
PANTHER Subfamily PTHR10736:SF0 BESTROPHIN-3
PANTHER Protein Class ion channel
transporter
PANTHER Pathway Category No pathway information available

2 GO annotations of cellular component

Name Definition
chloride channel complex An ion channel complex through which chloride ions pass.
plasma membrane The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

1 GO annotations of molecular function

Name Definition
chloride channel activity Enables the facilitated diffusion of a chloride (by an energy-independent process) involving passage through a transmembrane aqueous pore or channel without evidence for a carrier-mediated mechanism.

2 GO annotations of biological process

Name Definition
inorganic anion transport The directed movement of inorganic anions into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. Inorganic anions are atoms or small molecules with a negative charge which do not contain carbon in covalent linkage.
negative regulation of monoatomic ion transport Any process that stops, prevents, or reduces the frequency, rate or extent of the directed movement of charged atoms or small charged molecules into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.

12 homologous proteins in AiPD

UniProt AC Gene Name Protein Name Species Evidence Code
Q8NFU0 BEST4 Bestrophin-4 Homo sapiens (Human) SS
O76090 BEST1 Bestrophin-1 Homo sapiens (Human) SS
Q8NFU1 BEST2 Bestrophin-2a Homo sapiens (Human) SS
Q8N1M1 BEST3 Bestrophin-3 Homo sapiens (Human) SS
O88870 Best1 Bestrophin-1 Mus musculus (Mouse) SS
Q8BGM5 Best2 Bestrophin-2 Mus musculus (Mouse) SS
O18303 best-25 Bestrophin homolog 25 Caenorhabditis elegans PR
O45435 best-13 Bestrophin homolog 13 Caenorhabditis elegans PR
P34319 best-5 Bestrophin homolog 5 Caenorhabditis elegans PR
P34672 best-24 Bestrophin homolog 24 Caenorhabditis elegans PR
Q19978 best-14 Bestrophin homolog 14 Caenorhabditis elegans PR
Q23369 best-22 Bestrophin homolog 22 Caenorhabditis elegans PR
10 20 30 40 50 60
MTVTYSSKVA NATFFGFHRL LLKWRGSIYK LLYREFIVFA VLYTAISLVY RLLLTGAQKR
70 80 90 100 110 120
YFEKLSIYCD RYAEQIPVTF VLGFYVTLVV NRWWNQFVNL PWPDRLMLLI SSSVHGSDQH
130 140 150 160 170 180
GRLLRRTLMR YVNLTSLLIF RSVSTAVYKR FPTMDHVVEA GFMTADERKL FDHLKSPHLK
190 200 210 220 230 240
YWVPFIWFGN LATKARNEGR IRDSVDLQSL MTEMNRYRSW CSLLFGYDWV GIPLVYTQVV
250 260 270 280 290 300
TLAVYTFFFA CLIGRQFLDP TKGYVGHDLD LYVPIFTLLQ FFFYAGWLKV AEQLINPFGE
310 320 330 340 350 360
DDDDFETNWC IDRNLQVSLL AVDEMHMSLP KMKKDIYWDD SAARPPYTLA AADYCIPSFL
370 380 390 400 410 420
GSTIQMGLSG SNFPAEDWLW NYEKHGNRHS VMRRVKRFLS THEHPGSPRR RRSFGRQASD
430 440 450 460 470 480
SSMFLPPSPA RDLLDVPSRN PHRGSPTRKQ SRSQEGSPKL HSSMGELSTI RETSRTSTLQ
490 500 510 520 530 540
SLSPQSSVRS SPTKMPQVPE VLITAAEAPA FSADSHQHDS TTSILSLEFT GVQPSGTEQQ
550 560 570 580 590 600
VEPSGTPPGD PNPQTTSAST ERDLFKFEED LEDDRFPKRW SLPEFLESRH TSLGNLGPDP
610 620 630 640 650 660
VSPRDALLLP DTETPSETNG IHPGAGSALA PDILYLMESL DKETDILEFN NEHTGESPKG
TPQRPRTWF