Idiomarina loihiensis is a deep-sea, γ-proteobacterium initially isolated from a hydrothermal vent at a depth of 1,300 meters on the Lō'ihi submarine volcano off Hawaii . This bacterium is not an obligate anaerobic vent hyperthermophile like Thermotoga and Pyrococcus spp., and it can withstand a wide range of temperatures (4°C to 46°C) and salinities (0.5% to 20% NaCl) . The genome of I. loihiensis consists of a single chromosome comprising 2,839,318 base pairs, encoding 2,640 proteins, four rRNA operons, and 56 tRNA genes .
Compared to other γ-proteobacteria, I. loihiensis exhibits an abundance of amino acid transport and degradation enzymes but a reduction in sugar transport systems and specific enzymes involved in sugar metabolism . This suggests that I. loihiensis relies more on amino acid catabolism rather than sugar fermentation for its carbon and energy needs . Although the genome encodes enzymes for synthesizing purines, pyrimidines, most amino acids, and coenzymes, the biosynthetic pathways for leucine, isoleucine, valine, threonine, and methionine are incomplete . Experiments have confirmed that I. loihiensis is auxotrophic for valine and threonine .
Similar to other deep-sea vent microorganisms, I. loihiensis produces a highly viscous exopolysaccharide . The genome of I. loihiensis contains a cluster of 32 genes (IL0538–IL0569) that encode enzymes involved in the synthesis, export, modification, and polymerization of exopolysaccharides . There is also another gene cluster (IL0518–IL0521) that encodes enzymes for sialic acid biosynthesis and sialylation of surface polysaccharides .
Idiomarina has a unique fatty acid composition characterized by a high percentage of iso-branched fatty acids . I. loihiensis has twice the percentage of saturated fatty acids compared to other Idiomarina species . A complete set of enzymes for fatty acid biosynthesis has been found in the I. loihiensis genome . Gas chromatography/MS analysis of membrane fractions identified 11 fatty acids, with the most abundant being 3-hydroxyoctadecanoic acid (24.7%), 3-hydroxyundecanoic acid (23.2%), 9-octadecenoic acid (19.3%), and hexadecanoic acid (11.2%) . These fatty acids were identified as esters of phosphatidylglycerol (PG), diphosphatidylglycerol (DPG), phosphatidylethanolamine (PE), phosphatidylserine (PS), and phosphatidylcholine (PC), with PG and DPG being the most abundant phospholipids (45.6% and 32.2%, respectively) .
Recombinant Full Length Idiomarina loihiensis UPF0060 membrane protein IL1642(IL1642) Protein, His-Tagged is a protein produced in E. coli with a His tag attached to the N-terminal . The protein sequence spans from 1 to 111 amino acids (AA) .
| Category | Description |
|---|---|
| Catalog No. | RFL20415IF |
| Species | Idiomarina loihiensis |
| Source | E. coli |
| Tag | His |
| Protein Length | Full Length (1-111 AA) |
| Form | Lyophilized powder |
| AA Sequence | MSALFLMKTLGLFIATAIAEIVGCYLPYLWLKEGHSVWLLIPAAVSLALFAYLLTLHPAE SGRVYAAYGGIYVLTAIVWLRIVDKSPLSNFDLIGTAFVLTGMGILVYGWR |
| Purity | Greater than 90% as determined by SDS-PAGE. |
| Storage | Store at -20°C/-80°C upon receipt, aliquoting is necessary for multiple uses. Avoid repeated freeze-thaw cycles. |
| Storage Buffer | Tris/PBS-based buffer, 6% Trehalose, pH 8.0 |
| Reconstitution | Reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL. Add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. |
| Gene Name | IL1642 |
| Synonyms | IL1642; UPF0060 membrane protein IL1642 |
| UniProt ID | Q5QUB1 |
Creative BioMart offers IL1642 proteins for research in the life sciences . While specific research findings directly involving the IL1642 protein are not detailed in the provided documents, its nature as a membrane protein in a bacterium adapted to extreme conditions suggests potential applications in:
Extremophile Research: Understanding the adaptations of organisms to extreme environments .
Membrane Protein Studies: Investigating the structure, function, and biogenesis of membrane proteins .
Enzyme Discovery: Exploring enzymes involved in exopolysaccharide synthesis, modification, and polymerization .
Antimicrobial Research: Discovering new antiparasitic and antimicrobial agents .
Marine-Inspired Compounds: Synthesis and evaluation of marine-inspired compounds .
KEGG: ilo:IL1642
STRING: 283942.IL1642