2V03 - JenaLib

Title :   HIGH RESOLUTION STRUCTURE AND CATALYSIS OF AN O-ACETYLSERINE SULFHYDRYLASE

Authors :   G. Zocher, U. Wiesand, G. E. Schulz

Date :   08 May 07 (Deposition) - 09 Oct 07 (Release) - 11 Nov 15 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.33

Chains :   Asym. Unit : A
Biol. Unit 1: A  (2x)

Keywords :   Pyridoxal Phosphate, Cysteine Biosynthesis, Transferase, Enzyme Kinetics, Enzymatic Sythesis Of Novel Compounds, Amino-Acid Biosynthesis (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   G. Zocher, U. Wiesand, G. E. Schulz
High Resolution Structure And Catalysis Of O- Acetylserine Sulfhydrylase Isozyme B From Escherichia Coli.
Febs J. V. 274 5382 2007
PubMed-ID: 17894825 | Reference-DOI: 10.1111/J.1742-4658.2007.06063.X

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (3, 4)

Sites (4, 4)

Asymmetric Unit (4, 4)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	LYS A:41 , ASN A:71 , SER A:172 , GLY A:174 , THR A:175 , THR A:176 , GLY A:177 , THR A:178 , GLY A:208 , SER A:255 , CYS A:280 , ASP A:281 , TYR A:286 , CIT A:1297 , HOH A:2069 , HOH A:2070 , HOH A:2218 , HOH A:2329	BINDING SITE FOR RESIDUE PLP A1041
2	AC2	SOFTWARE	LEU A:31 , ASN A:34 , PRO A:36 , ILE A:250 , PHE A:251 , HOH A:2058 , HOH A:2065 , HOH A:2323 , HOH A:2324 , HOH A:2325	BINDING SITE FOR RESIDUE GOL A1295
3	AC3	SOFTWARE	GLU A:51 , LYS A:54 , ARG A:55 , ASP A:145 , HOH A:2326	BINDING SITE FOR RESIDUE GOL A1296
4	AC4	SOFTWARE	LYS A:41 , THR A:68 , SER A:69 , GLY A:70 , ASN A:71 , THR A:72 , GLN A:140 , GLY A:174 , GLY A:208 , ARG A:210 , PLP A:1041 , HOH A:2327 , HOH A:2328 , HOH A:2329	BINDING SITE FOR RESIDUE CIT A1297

SS Bonds (0, 0)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (1, 1)

Exons (0, 0)

Sequences/Alignments

Asymmetric Unit

Reformat:	Number of residues per line = ('0' or empty: single-line sequence representation)
	Number of residues per labelling interval =
	UniProt sequence: complete aligned part

Show mapping:	SCOP domains	CATH domains	Pfam domains	Secondary structure (by author)
	SAPs(SNPs)	PROSITE motifs	Exons
	(details for a mapped element are shown in a popup box when the mouse pointer rests over it)

Chain A from PDB  Type:PROTEIN  Length:294
 aligned with CYSM_ECOLI | P16703 from UniProtKB/Swiss-Prot  Length:303

    Alignment length:294
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290    
           CYSM_ECOLI     1 MSTLEQTIGNTPLVKLQRMGPDNGSEVWLKLEGNNPAGSVKDRAALSMIVEAEKRGEIKPGDVLIEATSGNTGIALAMIAALKGYRMKLLMPDNMSQERRAAMRAYGAELILVTKEQGMEGARDLALEMANRGEGKLLDQFNNPDNPYAHYTTTGPEIWQQTGGRITHFVSSMGTTGTITGVSRFMREQSKPVTIVGLQPEEGSSIPGIRRWPTEYLPGIFNASLVDEVLDIHQRDAENTMRELAVREGIFCGVSSGGAVAGALRVAKANPDAVVVAIICDRGDRYLSTGVFGE 294
               SCOP domains d2v03a_ A: automated matches                                                                                                                                                                                                                                                                           SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ CATH domains
               Pfam domains ---PALP-2v03A01 A:4-281                                                                                                                                                                                                                                                                  ------------- Pfam domains
         Sec.struct. author ..hhhhhh....eee..........eeeeee.hhh....hhhhhhhhhhhhhhhh.......eeeee..hhhhhhhhhhhhhhh.eeeeeee...hhhhhhhhhhh..eeeee...hhhhhhhhhhhhhhhh...ee......hhhhhhhhhhhhhhhhhhh.....eeeee...hhhhhhhhhhhhh.....eeeeeee............hhhhh....hhhhh.eeeeehhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhh...eeeeee...hhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE -----------------------------CYS_SYNTHASE       ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 2v03 A   1 MSTLEQTIGNTPLVKLQRMGPDNGSEVWLKLEGNNPAGSVKDRAALSMIVEAEKRGEIKPGDVLIEATSGNTGIALAMIAALKGYRMKLLMPDNMSQERRAAMRAYGAELILVTKEQGMEGARDLALEMANRGEGKLLDQFNNPDNPYAHYTTTGPEIWQQTGGRITHFVSSMGTTGTITGVSRFMREQSKPVTIVGLQPEEGSSIPGIRRWPTEYLPGIFNASLVDEVLDIHQRDAENTMRELAVREGIFCGVSSGGAVAGALRVAAANPDAVVVAIICDRGDRYLSTGVFGE 294
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290

Legend:		→ Mismatch	(orange background)
	-	→ Gap	(green background, '-', border residues have a numbering label)
		→ Modified Residue	(blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
	x	→ Chemical Group	(purple background, 'x', labelled with number + name, e.g. ACE or NH2)
	extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '\|'

Classification and Annotation

SCOP Domains (1, 1)

CATH Domains (0, 0)

Pfam Domains (1, 1)

Gene Ontology (8, 8)

Asymmetric Unit(hide GO term definitions)

Chain A (CYSM_ECOLI | P16703)

molecular function
	GO:0080146	L-cysteine desulfhydrase activity	Catalysis of the reaction: L-cysteine + H2O = ammonia + pyruvate + hydrogen sulfide + H+.
	GO:0004124	cysteine synthase activity	Catalysis of the reaction: O3-acetyl-L-serine + hydrogen sulfide = L-cysteine + acetate.
	GO:0030170	pyridoxal phosphate binding	Interacting selectively and non-covalently with pyridoxal 5' phosphate, 3-hydroxy-5-(hydroxymethyl)-2-methyl4-pyridine carboxaldehyde 5' phosphate, the biologically active form of vitamin B6.
	GO:0016740	transferase activity	Catalysis of the transfer of a group, e.g. a methyl group, glycosyl group, acyl group, phosphorus-containing, or other groups, from one compound (generally regarded as the donor) to another compound (generally regarded as the acceptor). Transferase is the systematic name for any enzyme of EC class 2.
biological process
	GO:0008652	cellular amino acid biosynthetic process	The chemical reactions and pathways resulting in the formation of amino acids, organic acids containing one or more amino substituents.
	GO:0019344	cysteine biosynthetic process	The chemical reactions and pathways resulting in the formation of cysteine, 2-amino-3-mercaptopropanoic acid.
	GO:0006535	cysteine biosynthetic process from serine	The chemical reactions and pathways resulting in the formation of cysteine from other compounds, including serine.
cellular component
	GO:0005737	cytoplasm	All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.

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	2v03
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