The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Purification and characterization of leader (signal) peptidase from Escherichia coli.
Open accessAbstract
Many membrane proteins and secreted proteins are synthesized in precursor form with 15 to 30 additional NH2-terminal residues. These "leader peptides" (pre-pieces, signal peptides) are removed as these proteins cross or insert into cellular membranes. "Leader peptidase" activities which catalyze this cleavage have been detected in crude extracts and found to be dependent on membrane fractions. We now describe a 6,000-fold purification of a leader peptidase from the membranes of uninfected Escherichia coli. This leader peptidase was assayed by its ability to cleave the 23-residue leader peptide from procoat, the precursor to bacteriophage M13 coat protein. Immunoprecipitation and amino acid sequencing showed that this enzyme cleaved procoat to produce authentic coat protein. No factors other than the leader peptidase were found to be required for the conversion of procoat protein to coat protein.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
A RAPID METHOD OF TOTAL LIPID EXTRACTION AND PURIFICATION
Bligh, E. G., & Dyer, W. J. (1959) · Canadian Journal of Biochemistry and Physiology · doi:10.1139/o59-099 · Cited by 54,751
Cited by
Lugtenberg, B., & Van Alphen, L. (1983) · Biochimica et Biophysica Acta (BBA) - Reviews on Biomembranes · doi:10.1016/0304-4157(83)90014-x · Cited by 759
Paetzel, M., Karla, A., Strynadka, N. C. J., & Dalbey, R. E. (2002) · Chemical Reviews · doi:10.1021/cr010166y · Cited by 440
β-Barrel Membrane Protein Assembly by the Bam Complex
Hagan, C. L., Silhavy, T. J., & Kahne, D. (2011) · Annual Review of Biochemistry · doi:10.1146/annurev-biochem-061408-144611 · Cited by 317
Wolfe, P. B., Wickner, W., & Goodman, J. M. (1983) · Journal of Biological Chemistry · doi:10.1016/s0021-9258(17)44342-0 · Cited by 302
Self-citationThe Sec translocon mediated protein transport in prokaryotes and eukaryotes.
Denks, K., Vogt, A., Sachelaru, I., Petriman, N.-A., Kudva, R., & Koch, H.-G. (2014) · Molecular Membrane Biology · doi:10.3109/09687688.2014.907455 · Cited by 170
Metadata
- Authors
- Zwizinski, C., & Wickner, W.
- Venue
- Journal of Biological Chemistry
- Publisher
- Elsevier BV
- Published
- 1980-08
- Volume
- 255
- Issue
- 16
- Pages
- 7973-7977
- ISSN
- 0021-9258 (ISSN-L)
- OpenAlex
- W175935117
- Cited by
- 235
- References
- 1
- FWCI
- 18.44
- Type
- journal article
- Language
- en
- Open access
- hybrid
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Purification and characterization of leader (signal) peptidase from Escherichia coli. https://app.cochat.ai/papers/10.1016/s0021-9258(19)43928-8
- The paper
- Zwizinski, C., & Wickner, W. (1980). Purification and characterization of leader (signal) peptidase from Escherichia coli. Journal of Biological Chemistry. https://doi.org/10.1016/s0021-9258(19)43928-8
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.