Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
specific investigations: other studies
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
supporting study
Study period:
2014-06-16
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2014
Report date:
2014

Materials and methods

Test guideline
Qualifier:
no guideline available
Principles of method if other than guideline:
Alignment of protein sequences from protein eADF4(C16) with the UniProt Knowledgebase (UniProtKB) database of protein sequences.
GLP compliance:
no
Type of method:
other: in silico
Endpoint addressed:
other: biological activity

Test material

Constituent 1
Reference substance name:
Recombinant spider silk protein eADF4(C16) derived from E. Coli by fermentation
Molecular formula:
not applicable, UVCB
IUPAC Name:
Recombinant spider silk protein eADF4(C16) derived from E. Coli by fermentation
Test material form:
other: protein film on a cellulose matrix

Results and discussion

Applicant's summary and conclusion

Conclusions:
Over 10.000 peptide sequences of the UniProt Knowledge Base (as of June 2013)
were analysed in respect to known peptide annotations. The resulting peptide fragments were
submitted to a sequence alignment with eADF4(C16) via an exact string-matching method. None
of the sequences aligned with the silk protein, indicating to no biologic activity of eADF4(C16)
Executive summary:

None of the peptide sequences annotated in UniprotKB could be found in exact match in the protein sequences eADF4(C16). All control sequences were found in eADF4(C16) by the exact string matching procedure.
After performing the alignment as described above, there are no matches - neither on the total sequences eADF4(C16) or partial sequences - and thus no evidence for biological activity.