johannakrueger.bsky.social
@johannakrueger.bsky.social
(6/6)
Altogether, we could demonstrate the utility of ancient enamel proteins for phylogenetic analysis. At the example of primates, we uncovered potential limitations and pitfalls and provide recommendations on how to address them.

academic.oup.com/gbe/article/...
Phylogenetic Signal in Primate Tooth Enamel Proteins and its Relevance for Paleoproteomics
Abstract. Ancient tooth enamel, and to some extent dentin and bone, contain characteristic peptides that persist for long periods of time. In particular, p
academic.oup.com
March 3, 2025 at 6:25 PM
(5/6)
We simulated ancient data by only using fragmentary sequence information and performed phylogenetic analysis on different degrees of fragmentation. A correct placement of nearly all family and genera was possible with as little as 12% of the full-length sequence data (panel c).
March 3, 2025 at 6:25 PM
(4/6)
One big surprise was that the deepest split in primates was affected by whether collagens belong to the proteins used in the phylogenetic analysis. The inclusion of particular collagen sequences caused a placement of tarsiers with strepsirrhines - a placement that nowadays is widely rejected.
March 3, 2025 at 6:24 PM
(3/6)
We translated 14 dental enamel protein sequences from 232 primate species. First, we checked how sequence conservation coincides with those peptides that are typically recovered from ancient dental enamel of different ages (purple shading).
March 3, 2025 at 6:24 PM
(2/6)
Dental enamel has a small proteome that survives into deep time in fossilized teeth. Recently, ancient enamel peptides could be isolated, sequenced, and used for phylogenetic analysis. However, it is unclear how much and which sequence information is needed for reliable phylogenetic inference…
March 3, 2025 at 6:23 PM
(2/6)
Dental enamel has a small proteome that survives into deep time in fossilized teeth. Recently, ancient enamel peptides could be isolated, sequenced, and used for phylogenetic analysis. However, it is unclear how much and which sequence information is needed for reliable phylogenetic inference…
March 3, 2025 at 6:22 PM
(3/6)
We translated 14 dental enamel protein sequences from 232 primate species. First, we checked how sequence conservation coincides with those peptides that are typically recovered from ancient dental enamel of different ages (purple shading).
March 3, 2025 at 6:21 PM
(4/6)
One big surprise was that the deepest split in primates was affected by whether collagens belong to the proteins used in the phylogenetic analysis. The inclusion of particular collagen sequences caused a placement of tarsiers with strepsirrhines - a placement that nowadays is widely rejected.
March 3, 2025 at 6:21 PM
(5/6)
We simulated ancient data by only using fragmentary sequence information and performed phylogenetic analysis on different degrees of fragmentation. A correct placement of nearly all family and genera was possible with as little as 12% of the full-length sequence data (panel c).
March 3, 2025 at 6:20 PM
(6/6)
Altogether, we could demonstrate the utility of ancient enamel proteins for phylogenetic analysis. At the example of primates, we uncovered potential limitations and pitfalls and provide recommendations on how to address them.

academic.oup.com/gbe/article/...
Phylogenetic Signal in Primate Tooth Enamel Proteins and its Relevance for Paleoproteomics
Abstract. Ancient tooth enamel, and to some extent dentin and bone, contain characteristic peptides that persist for long periods of time. In particular, p
academic.oup.com
March 3, 2025 at 6:18 PM
(5/5)
Altogether, we could demonstrate the utility of ancient enamel proteins for phylogenetic analysis. At the example of primates, we uncovered potential limitations and pitfalls and provide recommendations on how to address them.

academic.oup.com/gbe/article/...
Phylogenetic Signal in Primate Tooth Enamel Proteins and its Relevance for Paleoproteomics
Abstract. Ancient tooth enamel, and to some extent dentin and bone, contain characteristic peptides that persist for long periods of time. In particular, p
academic.oup.com
March 3, 2025 at 6:15 PM
(3/5)
We translated 14 dental enamel protein sequences from 232 primate species. First, we checked how sequence conservation coincides with those peptides that are typically recovered from ancient dental enamel of different ages (purple shading).
March 3, 2025 at 6:09 PM
(2/5)
Dental enamel has a small proteome that survives into deep time in fossilized teeth. Recently, ancient enamel peptides could be isolated, sequenced, and used for phylogenetic analysis. However, it is unclear how much and which sequence information is needed for reliable phylogenetic inference…
March 3, 2025 at 6:07 PM