Structure of PDB 8srd Chain B

Receptor sequence

>8srdB (length=1368) Species: 946362 (Salpingoeca rosetta)

SVAAKTLLIENEDGKGSTRMEVQDFMKRFHMHASEDDKTGSPSTAWGTLR
FPTKEATAPYLRLSVNDDPEDALLFVKAMLAQKYGETYDRPSLILSVTGG
ARNFTLPPRLETAIAKGLRLAAQRTNAWVVTGGTNTGVMKLTGQIMEALS
KTQSHFIPPTIGIATYGVIIGGDDMTRGEPPKIGLEYEMHKKDPPKTTPL
DDNHNLFLLVDDGSTNKFGKEIKFRAAFENAAGQAFAAPVVTIVVQGGPG
TLGTALQAVRQGTPIVVVDGSGLAADVLAYAYNFMHNPLTRFKSYTIDDL
RQKVAQTFNPKSSQQLTNLLDSALECVQDPNLVVVYSLQESGIDEFDDCI
LKAIFSSQGKLGNKLKQAMYFDQLDVAKRALSEASKNGQHNEIAACINDN
LMAAMMHNKPHFVELYLGFDAKIYELKPSEEVAKTNITALDELPSFALAI
EELYKREAKKPHSHVQRLVSLSNTDVLGRHYRVRDLANTRAYNVLRMDQI
FARLVSKDFSVNRDFTIYDSKYDKVPGIQFRRTAQASHMLFLWAICLDRF
RMARHFWLIGDQSIINALVASRILERLSTHRALQGPHLAEERAKMQHNAK
KFEELAVGVLGECHGSDSHMASEMLHSKNDMFNKKNAINIAYDAKSLAFL
SHPATQSVINADWYGHLKSVTSFWAVLFAFFFPFFVLPFINFSGAHRLRR
KFAKFYSAPYTRFISDLLSHFVLCVVTSYFVLDKLEDTISAIEWILLVWF
VALLLEELRQMIFCDGIAEYISDTWNRLDLIMITLFFVGFFTHASDPSNQ
DSKVVSKGIHAFLVVVLWLRFMRYYALSKNLGPKLIMMMEMMKDVSTFVF
LLLIFLIGYGVAAQSLLSPDEDFSSRTFIGVLFRPYFQIYGELFLDDLNS
EANCLGDTPFTECSRETVRMVPFFLAVYILGSNVLLVNLLIAMFNDTYMK
VQEAAEDLWRKQNYELCAEYKDRPFLPAPFILLAHVHMLFMRLLRLCGVH
TQEHEKIQDDETKRKITTFEELNTDKFLRRWERERQEMLEARVKMTNDNV
VQAMGMMDQLLEHMISFRFSLDQQATKNRLNSAVAVHGHTAEAAEWYVPP
EEYPKSGGVKRYLIDASMVPLSIMCPSYDPVEYTHPSVAAQPVWADPADP
RKIKFNVKDEVNGKVVDRTSCHPSGISIDSNTGRPINPWGRTGMTGRGLL
GKWGVNQAADTVVTRWKRSPDGSILERDGKKVLEFVAIQRQDNKMWAIPG
GFVDNGEDVALTSGREFMEEALGMGSAESKDSLAALFSSGTIVARIYCED
PRNTDNAWVETTCVNFHDESGRHAARLKLQGGDDAEHARWMMVHGGLNLF
ASHRTLLQHVTSALNAYF

3D structure

• PDB: 8srd Coupling enzymatic activity and gating in an ancient TRPM chanzyme and its molecular evolution
• Chain: B
• Resolution: 2.91 Å

Interaction with ligand

Site #	Ligand	Ligand chain	Binding residues on receptor (original residue number in PDB)	Binding residues on receptor (residue number reindexed from 1)	Binding affinity
BS01	CLR	B	V942 L946 I972 F976 Y979	V849 L853 I879 F883 Y886
BS02	APR	B	T148 G149 G150 A151 R152 N153 T184 F268 E271 R275 G298 G300 T301	T98 G99 G100 A101 R102 N103 T134 F218 E221 R225 G248 G250 T251
BS03	MG	B	E850 Q853 N869 D872	E757 Q760 N776 D779
BS04	CLR	B	L878 F905	L785 F812
BS05	APR	B	W1264 G1321 N1326 D1330 G1370 G1371 F1372 E1390 C1424 D1426 R1428	W1144 G1201 N1206 D1210 G1250 G1251 F1252 E1270 C1298 D1300 R1302
BS06	CLR	B	F1003 R1012	F910 R919

Gene Ontology

Molecular Function

• GO:0005216 monoatomic ion channel activity
• GO:0005261 monoatomic cation channel activity
• GO:0005262 calcium channel activity

Biological Process

• GO:0006811 monoatomic ion transport
• GO:0055085 transmembrane transport
• GO:0070588 calcium ion transmembrane transport
• GO:0098655 monoatomic cation transmembrane transport

Cellular Component

• GO:0005886 plasma membrane
• GO:0016020 membrane

External links

• PDB: RCSB:8srd, PDBe:8srd, PDBj:8srd
• PDBsum: 8srd
• UniProt: F2UB89