Journal of Enzymes · ISSN 2690-4829
Indexing and preservation
Six different things are often called indexing. This page separates them and says what is in place for this journal, with the date each was checked.
01 · Identifier
Journal identifier
An ISSN identifies the journal as a publication. It is a registration, and it is what a library catalog or a citation uses to be sure which journal is meant.
- JournalJournal of Enzymes
- ISSN2690-4829
- PublisherOpen Access Pub
- Journal homeopenaccesspub.org/journal/enzymes
02 · Persistent links
DOI registration
Every article published in Enzymes is registered with Crossref and carries a DOI, so a citation keeps resolving to the article even if the address changes. DOI registration is an identifier service; it is a different thing from a database deciding to index the journal.
- Registration agencyCrossref
- DOI prefix10.14302
- Records carrying a DOIAll 11 published records
- ResolutionEach of the 11 resolves through doi.org to its own article
Resolved and checked 18 September 2026
03 · Harvesting
Metadata harvesting
Harvesting is how an aggregator collects a journal's records in bulk. The publisher runs an OAI-PMH repository, and this journal's records form a set within it that any harvester can request. Harvesting makes the records available to a service; it does not by itself mean a given service has taken them.
- ProtocolOAI-PMH 2.0
- Repositoryopenaccesspub.org/oai
- Set for this journaljournal:enzymes
- Records in the set11, matching the journal's published record
Checked 18 September 2026
04 · Being found
Discovery
Discovery services and reference managers read bibliographic metadata from the article page itself. Each article page for this journal exposes that metadata in the standard fields, so the title, authors, affiliations, journal, ISSN, volume, issue, pagination, date, DOI, keywords and full-text link are all machine-readable.
Whether any particular service has taken up a given article is that service's decision and is recorded by that service, not here.
- Metadata standardGoogle Scholar citation fields, in the article page head
- Fields exposed23 distinct citation fields, including DOI, ISSN, journal title, authors and pagination
- Full textOpen access, no subscription and no reader charge
- ReuseCreative Commons Attribution License, stated on each article
Checked on a published article, 18 September 2026
05 · A separate assessment
Selective journal-level indexing
Some databases assess a journal as a whole — its scope, editorial process, publication record and adherence to standards — and list the journal when it meets their own published criteria. That assessment belongs to the database, and each one keeps its own authoritative record of which journals it covers.
This is the category that the four above are most often mistaken for. An ISSN, a registered DOI, a harvestable record and machine-readable citation metadata are each real and useful, and none of them is selective indexing. Where Enzymes holds coverage in a selective database, that database's own record is the authority for it, and this page carries the confirmation once it can cite that record.
For the current position on any specific database, write to [email protected].
06 · The long term
Digital preservation
This journal’s content is committed to Portico, a not-for-profit digital-preservation archive run by ITHAKA (the organization behind JSTOR). As articles are deposited they enter Portico’s permanent archive, so the scholarly record stays available for the long term — even if a title one day ceases to publish.
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Deposit in PubMed Central for NIH-funded work
Eligible NIH-funded manuscripts may be deposited individually in PubMed Central through the NIH Manuscript Submission System (NIHMS).
This is a route available to an author for an individual manuscript. It is separate from journal-level coverage by PubMed, MEDLINE or PubMed Central, which is a database assessment of the kind described above.
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Author self-archiving
Authors may deposit the published version in an institutional or subject repository immediately on publication, with no embargo, under the article's license. A repository copy adds a second place the work survives.
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Community repositories for data
Structures in the Protein Data Bank, maps in EMDB and sequences in GenBank or UniProt are preserved by those repositories under their own arrangements. Deposition requirements are in Instructions for Authors.
Questions about coverage or identifiers: [email protected].
Journal of Enzymes · ISSN 2690-4829 · Open Access Pub