Marine microbes are powerful sources of enzymes with high biotechnological applications. Plastic litter is one of the major concerns in terms of marine pollution. What are the key enzymes produced by microorganisms involved in plastic degradation (PVC, PET, etc)?
Maybe these articles are helpful:
http://www.sciencedirect.com/science/article/pii/S0734975008000141
http://www.sciencedirect.com/science/article/pii/S0958166900002068
http://www.sciencedirect.com/science/article/pii/S0958166900002068
http://www.mdpi.com/1422-0067/10/9/3722/htm
http://informahealthcare.com/doi/abs/10.1080/07388550500346359
http://aem.asm.org/content/71/11/7548.short
http://link.springer.com/article/10.1023/B:BILE.0000036599.15302.e5
http://link.springer.com/article/10.1023/B:BILE.0000025927.31028.e3
http://www.sciencedirect.com/science/article/pii/S0141391005001618
http://femsle.oxfordjournals.org/content/189/1/25.abstract
http://www.sciencedirect.com/science/article/pii/S1359511306002200
#3, #6 and #11are about particular enzymes.
Various bacteria are implied in the degradation of plastic. Some enzyme such as the
Oxygenase permits a better solubility of plastic polymer,making them more readily degradable by bacteria. Lipases and esterases specifically attack carboxylic groups and amine groups endopeptidases.
Il can be is interesting for you to read Ghosh et al. 2013
PET-hydrolyzing enzymes such as cutinase or lipase are involved in PET degradation. There are several publications about PET-hydrolyzing enzymes from bacteria or fungi.
As far as I'm aware, while 'degradation' of plastics by bacteria or fungi may be possible, there are simply not enough of these to make any dint in the amount of plastic in the oceans or sediments.
As per the literature there are various enzymes secreted by the microbes for the degradation of the plastic, some are as:
1. Alkane hydroxylase (Pseudomonas aeroginosa) (Belllaj et al., 2006)
2. Lipases (Uchida et al., 2000; Bhardwaj et al., 2012)
3. Laccase (Rhodococcus ruber)
4. Lignin, manganese dependent peroxidase (LiP & MnP)
5. Serine hydrolasses
6. Esterases
7. Putative polyurethanases
8. Phenol oxidase (laccase)
9. Heme peroxidase (lignin peroxidase)
10.Protease (Bacillus sp. and Brevibacillus)
Great article:
Article Microbial enzymes for the recycling of recalcitrant petroleu...
You may have a look at this article too..
Article Microbial enzymes for the recycling of recalcitrant petroleu...
These papers will help you. In many cases for PET degradation is carried out by PETase basically a hydrolase enzyme.
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