Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 332

The DOI matches its Crossref record; 15 of the 15 references it cites were found in a registry or an index.

Plasminogen Activation Initiated by Single-chain Urokinase-type Plasminogen Activator

Open access
Ellis, V, Scully, M F, Kakkar, V V·1989·Journal of Biological Chemistry

Abstract

The binding of urokinase-type plasminogen activators (u-PA) to receptors on various cell types has been proposed to be an important feature of many cellular processes requiring extracellular proteolysis. We have investigated the effect of single-chain u-PA binding to the monocyte-like cell line U937 on plasminogen activation. A 16-fold acceleration of the activation of plasminogen was observed at optimal concentrations of single-chain u-PA. This potentiation was abolished by the addition of either 6-aminohexanoic acid or the amino-terminal fragment of u-PA, thus demonstrating the requirement for specific binding of both single-chain u-PA and plasminogen to the cells. The mechanism of the enhancement of plasmin generation appears to be due primarily to an increase in the rate of feedback activation of single-chain u-PA to the more active two-chain u-PA by cell-bound plasmin, initially generated by single-chain u-PA. This increased activity of the plasminogen activation system in the presence of U937 cells provides a mechanism whereby u-PAs may exert their influence in a variety of cell-associated proteolytic events.

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.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1016/s0021-9258(18)94159-1

Cites

15 of 15 references verified0 citation errors · 0 not checkable

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.

A few free checks a day · papers already verified open instantly · results are public

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

Show all 15 references

Cited by

See all 332

Metadata

Authors
Ellis, V, Scully, M. F., & Kakkar, V. V.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1989-02
Volume
264
Issue
4
Pages
2185-2188
ISSN
0021-9258 (ISSN-L)
OpenAlex
W1581591459
Cited by
332
References
15
FWCI
11.07
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: Plasminogen Activation Initiated by Single-chain Urokinase-type Plasminogen Activator. https://app.cochat.ai/papers/10.1016/s0021-9258(18)94159-1
The paper
Ellis, V, Scully, M. F., & Kakkar, V. V. (1989). Plasminogen Activation Initiated by Single-chain Urokinase-type Plasminogen Activator. Journal of Biological Chemistry. https://doi.org/10.1016/s0021-9258(18)94159-1

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.