The phrase "a second function of" is correct and usable in written English.
It can be used when discussing multiple roles or purposes of a particular subject or object.
Example: "In addition to its primary purpose, a second function of this software is to enhance user collaboration."
Alternatives: "an additional role of" or "a secondary purpose of".
A second function of historians' testimony is in the interpretation and authentication of documentary evidence like identity cards, assignment and transfer records, and other orders.
A second function of reactions and is to generate from glucose 6-phosphate the pentoses that are used in the synthesis of nucleic acids (see below The biosynthesis of cell components).
A second function of worship is the creation and maintenance of views and attitudinal stances that identify the members of the society to each other and in relation to other groups.
During preparations for an imminent disaster, a second function of social media is to act as a medium for dissemination of warnings and alerts.
A second function of the sort of items included in the international broadsides is to offer a glimpse of political and social relations in many different places.
A second function of HTK toolkit, HBuild, uses the back off probabilities file as an input and generates the bigram language model.
A third function of worship is that of providing personal support to individual members of a group or of a society.
A third function of doctrine is polemical: the defense of the faith against misinterpretation and error, within or without a religious tradition.
A third function of NDRs and the complexes bound to them would be to act as barriers [ 20] or organizing centers from where nucleosome arrays are generated [ 16, 21, 22].
Similar to Drosophila, mammalian Timeout has a second function independent of the circadian clock as one component of the DNA replication fork complex [38].
Like property investment in the cities, many of these purchases are likely to have a second function: the laundering of cash from organised crime.
