Halobacterium salinarum S11 Recombinant Sensory Rhodopsin-2 (from E. coli)
Catalog # 77392-870
Supplier: CUBE BIOTECH
CAS Number:
Specifications
- Protein/Peptide Type:Recombinant
- Source:E. coli
- Species:Halobacterium salinarum S11
- Size:100 µg
- Amino Acid Number:243
- Protein Synonyms:SR-2, HsSRII
- Protein/Peptide Name:Sensory Rhodopsin-2
- Purity:>98%
- Molecular Weight:26103 Da
- Sequence:MALTTWFWVG AVGMLAGTVL PIRDCIRHPS HRRYDLVLAG ITGLAAIAYT TMGLGITATT VGDRTVYLAR YIDWLVTTPL IVLYLAMLAR PGHRTSAWLL AADVFVIAAG IAAALTTGVQ RWLFFAVGAA GYAALLYGLL GTLPRALGDD PRVRSLFVTL RNITVVLWTL YPVVWLLSPA GIGILQTEMY TIVVVYLDFI SKVAFVAFAV LGADAVSRLV AADAAAPATA EPTPDGD HHHHHH
- Cat. No.:77392-870
Specifications
About this item
Sensory rhodopsin-2 (SR-2) is a 7-transmembrane helice protein that acts as a phototaxis receptor in archaebacteria.
- Alternative names: Sensory rhodopsin-2 (SR-2, NpSRII)
- UniProt Number: P71411
- Protein class: seven-transmembrane protein
- Organism: Halobacterium salinarum S9
- Sequence, explained: wild-type sequence, full-length, 6× his-tag
- Affinity tags:His-tag (C-terminus)
- Expression Host: E.coli
- Buffer composition: 4 M NaCl, 50 mM MES pH 6.0, 0.03% dodecyl maltoside (DDM)
- Purified via: PureCube Ni-NTA Agarose
- Absorbance: Extinction coefficient at 497 nm: 48000 M⁻¹cm⁻¹
- Extinction coefficient at 590 nm, 54000 M⁻¹ cm⁻¹
- Activity: Binding of ligand all-trans retinal, covalently bound to a lysine residue. Evaluation of UV-VIS spectrum: absorbance ratio 280/497 nm = 1.7 (additional vibronic bands at 460 and 420 nm)
- Function: Photoreceptor protein undergoing a photocycle, Retinal protein, photophobic phototaxis receptor
Due to sensory rhodopsin-2's covalently bound colored ligand, SR-2 is ideal for use as a control membrane protein, for example for crystallization assays and biochemical/biophysical experiments. We provide SR-2 of high purity, purified from E.coli as a his-tagged protein.