Cloning and expression of pectinase gene from two forest soil bacteria, Streptomyces sp.
Bibliographic record
Abstract
Pectinase is a prominent industrial enzyme with a high market demand and huge applications in diverse avenues. There are different sources for pectinase production; however, a highly stable microbial pectinase that can withstand different physiochemical conditions is needed. Therefore, this study explored the thermostability of the pectinase protein cloned and expressed in Escherichia coli BL21(DE3) from two forest soil bacteria (S-5 and S-14) identified as Streptomyces sp. The pectinase gene illustrated about 750 bp on the gel after electrophoresis and encoded a product of approximately 25 kDa molecular weight. Both expressed pectinase proteins showed optimal activity at 2 different pHs (pH 5 and 9) and 50 ℃. When both recombinant pectinases were exposed to different temperatures, they were able to retain their activity for 120 min indicating both have important thermostable properties. These enzymes could have great potential in industrial biotechnological processes due to their stability over broad pH and high temperatures.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".