Protein
4-hydroxyproline 2-epimerase
Organism
Chromobacterium violaceum (strain ATCC 12472 / DSM 30191 / JCM 1249 / NBRC 12614 / NCIMB 9131 / NCTC 9757)
Function
Catalyzes the epimerization of trans-4-hydroxy-L-proline (t4LHyp) to cis-4-hydroxy-D-proline (c4DHyp). Is likely involved in a degradation pathway that converts t4LHyp to alpha-ketoglutarate. Can also catalyze the epimerization of trans-3-hydroxy-L-proline (t3LHyp) to cis-3-hydroxy-D-proline (c3DHyp), albeit with 19-fold lower efficiency. Displays no proline racemase activity.
Similarity
Belongs to the proline racemase family.
Sequence
MKQVEIIDSHTGGEPTRLVLSGFPALAGATMADKRDALRERHDQWRRACLLEPRGSDVLVGALYCEPVSPDAACGVIFFNNTGYIGMCGHGTIGLIASLHCLGRIAPGAHKIDTPVGPVDAVLHEDGSVTLRNVPAYRYRRQAAVEVPGHGTVIGDIAWGGNWFFLVAEHGLSVRLDNVAALSAFSCATMQALEEQGITGADGARIDHVELFADDEQADSRNFVMCPGKAYDRSPCGTGTSAKLACLAADGKLAEGEQWVQAGITGSRFVGHYQREGDFIRPYITGRAHITARAMLLIDEQDPFAWGI