Protein Family Models

Date:

2024-08-14

Date:

2024-08-14

This family represents the C-terminal region of the male sterility protein in a number of arabidopsis and drosophila. A sequence-related jojoba acyl CoA reductase is also included. [1]. 9351246. The Arabidopsis MALE STERILITY 2 protein shares similarity with reductases in elongation/condensation complexes. Aarts MG, Hodge R, Kalantidis K, Florack D, Wilson ZA, Mulligan BJ, Stiekema WJ, Scott R, Pereira A;. Plant J 1997;12:615-623. (from Pfam)

Date:

2024-10-16

L-rhamnose is a saccharide required for the virulence of some bacteria. Its precursor, dTDP-L-rhamnose, is synthesised by four different enzymes the final one of which is RmlD. The RmlD substrate binding domain is responsible for binding a sugar nucleotide [1,2]. [1]. 12057193. Variation on a Theme of SDR. dTDP-6-Deoxy-L- lyxo-4-Hexulose Reductase (RmlD) Shows a New Mg(2+)-Dependent Dimerization Mode. Blankenfeldt W, Kerr ID, Giraud MF, McMiken HJ, Leonard G, Whitfield C, Messner P, Graninger M, Naismith JH;. Structure (Camb) 2002;10:773-786. [2]. 10802738. RmlC, the third enzyme of dTDP-L-rhamnose pathway, is a new class of epimerase. Giraud MF, Leonard GA, Field RA, Berlind C, Naismith JH;. Nat Struct Biol 2000;7:398-402. (from Pfam)

Date:

2024-10-16

This is a family of diverse bacterial polysaccharide biosynthesis proteins including the CapD protein (Swiss:P39853) [1], WalL protein (Swiss:O86159) mannosyl-transferase (Swiss:O05349) [2] and several putative epimerases (e.g. WbiI Swiss:O69130). [1]. 7961465. Sequence analysis and molecular characterization of genes required for the biosynthesis of type 1 capsular polysaccharide in Staphylococcus aureus. Lin WS, Cunneen T, Lee CY;. J Bacteriol 1994;176:7005-7016. [2]. 9079898. Identification of additional genes required for O-antigen biosynthesis in Vibrio cholerae O1. Fallarino A, Mavrangelos C, Stroeher UH, Manning PA;. J Bacteriol 1997;179:2147-2153. (from Pfam)

Date:

2024-10-16

This family of proteins utilise NAD as a cofactor. The proteins in this family use nucleotide-sugar substrates for a variety of chemical reactions. [1]. 9174344. Structural analysis of UDP-sugar binding to UDP-galactose 4-epimerase from Escherichia coli. Thoden JB, Hegeman AD, Wesenberg G, Chapeau MC, Frey PA, Holden HM;. Biochemistry 1997;36:6294-6304. (from Pfam)

Date:

2024-10-16

This domain is found in a wide variety of proteins. These protein include potassium channels Swiss:P31069, phosphoesterases Swiss:Q59027, and various other transporters. This domain binds to NAD. Domain called KTN in figure 2. [1]. 9478130. A novel family of predicted phosphoesterases includes Drosophila prune protein and bacterial RecJ exonuclease. Aravind L, Koonin EV;. Trends Biochem Sci 1998;23:17-19. [2]. 8412700. NAD+ binding to the Escherichia coli K(+)-uptake protein TrkA and sequence similarity between TrkA and domains of a family of dehydrogenases suggest a role for NAD+ in bacterial transport. Schlosser A, Hamann A, Bossemeyer D, Schneider E, Bakker EP;. Mol Microbiol 1993;9:533-543. Called TRKA-N domain. See alignment in figure 8a. [3]. 11292341. Regulatory potential, phyletic distribution and evolution of ancient, intracellular small-molecule-binding domains. Anantharaman V, Koonin EV, Aravind L;. J Mol Biol 2001;307:1271-1292. (from Pfam)

Date:

2024-10-16

The enzyme 3 beta-hydroxysteroid dehydrogenase/5-ene-4-ene isomerase (3 beta-HSD) catalyses the oxidation and isomerisation of 5-ene-3 beta-hydroxypregnene and 5-ene-hydroxyandrostene steroid precursors into the corresponding 4-ene-ketosteroids necessary for the formation of all classes of steroid hormones. [1]. 1562516. Structure and tissue-specific expression of 3 beta-hydroxysteroid dehydrogenase/5-ene-4-ene isomerase genes in human and rat classical and peripheral steroidogenic tissues. Labrie F, Simard J, Luu-The V, Pelletier G, Belanger A, Lachance Y, Zhao HF, Labrie C, Breton N, de Launoit Y, et al. J Steroid Biochem Mol Biol 1992;41:421-435. (from Pfam)

Date:

2024-10-16