Structure of PDB 2qtv Chain B

Receptor sequence
>2qtvB (length=164) Species: 4932 (Saccharomyces cerevisiae) [Search protein sequence]
HGKLLFLGLDNAGKTTLLHMLKNDRLATLQPTWHPTSEELAIGNIKFTTF
DLGGHIQARRLWKDYFPEVNGIVFLVDAADPERFDEARVELDALFNIAEL
KDVPFVILGNKIDAPNAVSEAELRSALGLLNTTGIEGQRPVEVFMCSVVM
RNGYLEAFQWLSQY
3D structure
PDB2qtv Insights into COPII coat nucleation from the structure of Sec23.Sar1 complexed with the active fragment of Sec31.
ChainB
Resolution2.5 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) H77
Catalytic site (residue number reindexed from 1) H55
Enzyme Commision number 3.6.5.-
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 MG B T37 T54 T15 T32
BS02 GNP B D32 N33 G35 K36 T37 T38 P53 T54 G76 N132 K133 D135 S172 V173 V174 D10 N11 G13 K14 T15 T16 P31 T32 G54 N110 K111 D113 S147 V148 V149
Gene Ontology
Molecular Function
GO:0003924 GTPase activity
GO:0005525 GTP binding
Biological Process
GO:0006886 intracellular protein transport

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Molecular Function
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Biological Process
External links
PDB RCSB:2qtv, PDBe:2qtv, PDBj:2qtv
PDBsum2qtv
PubMed17981133
UniProtP20606|SAR1_YEAST Small COPII coat GTPase SAR1 (Gene Name=SAR1)

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