One First author paper, what are my prospects in academia? I completed my PhD about a year ago and I'm currently one year into my post-doc. I had a first author in a mid-level journal and have only one citation to date. I also published a chapter in a textbook but I don't know how much weight that holds. While there are prospects of getting some data published at the end of my post-doc, it is probable that these would still be in press at the time or may not even get published at all. I'm pretty worried about the low citation index of my paper. I know I'm not ready to apply for a fellowship yet but what are my chances of nailing another post-doc.
To be frank, in molecular/cell biology your chances are rather slim. The 'standard' is almost 3-5 papers from your PhD which can be expected to be out by the end of your first postdoc plus some output from your postdoc. Of course, it is stupid to judge people only by their paper metrics, but this is what very many people in academia do. If you are lucky, you find a person who is not that quick with her judgement and searches for the hidden gold, carefully reading your letter and CV and the reference letters or is giving you a chance and invites you for interview. That can happen (happened to me once), but is rather rare.

Chances are even lower if the hiring process involves a committee panel or external reviews (as for grants or scholarships). Competition is often high, so you will usually only have a chance when you get very good/top marks from all reviewers. Because if there are three candidates who get 3 A+'s and then there is you, and even if just one of the three reviewers was only looking at publication output (chances for that will be veery high) and gave you a B or C, then you are already out and the decision will only be between the top-rated candidates.

On the other hand, a combination of a convincing letter AND the luck of being at the right time ready for the right job AND a bit of luck of hitting a person who is not overemphazising your publication output might put you into your 2nd postoc. Your chances are low but not zero.