Abstract:
:Crustins are distributed across the decapods and are believed to play a significant part in the humoral defense system of their host. In this study, two crustin isoforms from Hyas araneus hemocytes were purified and tested for antimicrobial activity against selected microorganisms. They show both antibacterial and antifungal activity, with highest activity against the Gram-positive bacteria Corynebacterium glutamicum. Sequencing of the transcripts showed them to have a mature peptide of 90 amino acids and differing in three positions in the mature peptide. They were named CruHa1 and CruHa2. Real-time RT-PCR revealed that they mainly are expressed in hemocytes. Screening a cDNA library detected a crustin sequence in Paralithodes camtschaticus hemocytes, coding for a mature peptide of 98 amino acids. It was named CruPc. Based on phylogenetic inference and primary structure, CruHa1 and CruHa2 were placed within the Type I group of crustins, while CruPc belongs to the Type II.
journal_name
Dev Comp Immunoljournal_title
Developmental and comparative immunologyauthors
Sperstad SV,Haug T,Paulsen V,Rode TM,Strandskog G,Solem ST,Styrvold OB,Stensvåg Kdoi
10.1016/j.dci.2008.10.010subject
Has Abstractpub_date
2009-04-01 00:00:00pages
583-91issue
4eissn
0145-305Xissn
1879-0089pii
S0145-305X(08)00248-6journal_volume
33pub_type
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