1SSQ - JenaLib

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Title :   SERINE ACETYLTRANSFERASE- COMPLEX WITH CYSTEINE

Authors :   L. R. Olsen, B. Huang, M. W. Vetting, S. L. Roderick

Date :   24 Mar 04 (Deposition) - 01 Jun 04 (Release) - 13 Jul 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.85

Chains :   Asym. Unit : A,D
Biol. Unit 1: A,D  (3x)

Keywords :   Left-Handed Parallel Beta Helix, Transferase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   L. R. Olsen, B. Huang, M. W. Vetting, S. L. Roderick
Structure Of Serine Acetyltransferase In Complexes With Coa And Its Cysteine Feedback Inhibitor
Biochemistry V. 43 6013 2004
PubMed-ID: 15147185 | Reference-DOI: 10.1021/BI0358521

Molecule 1 - SERINE ACETYLTRANSFERASE
	Chains	:	A, D
	EC Number	:	2.3.1.30
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI BL21(DE3)
	Expression System Plasmid	:	PET3A
	Expression System Strain	:	BL21(DE3)
	Expression System Taxid	:	469008
	Expression System Vector Type	:	PLASMID
	Gene	:	CYSE, HI0606
	Mutation	:	YES
	Organism Scientific	:	HAEMOPHILUS INFLUENZAE
	Organism Taxid	:	727
	Synonym	:	SAT

		1	2
Asymmetric Unit	:	A	D
Biological Unit 1 (3x)	:	A	D

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (2, 4)

No.	Name	Count	Type	Full Name
1	CYS	2	Mod. Amino Acid	CYSTEINE
2	MG	2	Ligand/Ion	MAGNESIUM ION

Biological Unit 1 (1, 6)

No.	Name	Count	Type	Full Name
1	CYS	6	Mod. Amino Acid	CYSTEINE
2	MG	-1	Ligand/Ion	MAGNESIUM ION

Asymmetric Unit (4, 4)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	ASP D:137 , HOH D:3043	BINDING SITE FOR RESIDUE MG D 4000
2	AC2	SOFTWARE	ASP A:137 , HOH A:3006	BINDING SITE FOR RESIDUE MG A 4001
3	AC3	SOFTWARE	ASP A:88 , PRO A:89 , ALA A:90 , ASP A:153 , HIS A:154 , ARG A:188 , HIS A:189 , HOH A:3076 , HOH A:3114	BINDING SITE FOR RESIDUE CYS A 2000
4	AC4	SOFTWARE	ASP D:88 , ALA D:90 , ASP D:153 , HIS D:154 , GLY D:180 , ARG D:188 , HIS D:189 , HOH D:3072 , HOH D:3170 , HOH D:3378	BINDING SITE FOR RESIDUE CYS A 2001

(no "SS Bond" information available for 1SSQ)

Asymmetric Unit

No.	Residues
1	Val A:235	-	Pro A:236
2	Val D:235	-	Pro D:236

(no "SAP(SNP)/Variant" information available for 1SSQ)

Asymmetric Unit (1, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	HEXAPEP_TRANSFERASES	PS00101	Hexapeptide-repeat containing-transferases signature.	CYSE_HAEIN	198-226	2	A:198-226 D:198-226

Biological Unit 1 (1, 6)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	HEXAPEP_TRANSFERASES	PS00101	Hexapeptide-repeat containing-transferases signature.	CYSE_HAEIN	198-226	6	A:198-226 D:198-226

(no "Exon" information available for 1SSQ)

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:241
 aligned with CYSE_HAEIN | P43886 from UniProtKB/Swiss-Prot  Length:267

    Alignment length:241
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240 
           CYSE_HAEIN     1 MTLDVWQHIRQEAKELAENEPMLASFFHSTILKHQNLGGALSYLLANKLANPIMPAISLREIIEEAYQSNPSIIDCAACDIQAVRHRDPAVELWSTPLLYLKGFHAIQSYRITHYLWNQNRKSLALYLQNQISVAFDVDIHPAAKIGHGIMFDHATGIVVGETSVIENDVSILQGVTLGGTGKESGDRHPKVREGVMIGAGAKILGNIEVGKYAKIGANSVVLNPVPEYATAAGVPARIVS 241
               SCOP domains d1ssqa_ A: Serine acetyltransferase                                                                                                                                                                                                               SCOP domains
               CATH domains 1ssqA01 A:1-138 serine acetyltransferase, domain 1                                                                                        1ssqA02 A:139-241 Hexapeptide repeat proteins                                                           CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhh.ee....ee....ee......ee....ee....ee....eee...........ee....ee....eee...ee....ee....ee........eee....ee.. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------HEXAPEP_TRANSFERASES         --------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1ssq A   1 MNLDVWQHIRQEAKELAENEPMLASFFHSTILKHQNLGGALSYLLANKLANPIMPAISLREIIEEAYQSNPSIIDCAACDIQAVRHRDPAVELWSTPLLYLKGFHAIQSYRITHYLWNQNRKSLALYLQNQISVAFDVDIHPAAKIGHGIMFDHATGIVVGETSVIENDVSILQGVTLGGTGKESGDRHPKVREGVMIGAGAKILGNIEVGKYAKIGANSVVLNPVPEYATAAGVPARIVS 241
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240

Chain D from PDB  Type:PROTEIN  Length:257
 aligned with CYSE_HAEIN | P43886 from UniProtKB/Swiss-Prot  Length:267

    Alignment length:257
                                    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       
           CYSE_HAEIN     1 MTLDVWQHIRQEAKELAENEPMLASFFHSTILKHQNLGGALSYLLANKLANPIMPAISLREIIEEAYQSNPSIIDCAACDIQAVRHRDPAVELWSTPLLYLKGFHAIQSYRITHYLWNQNRKSLALYLQNQISVAFDVDIHPAAKIGHGIMFDHATGIVVGETSVIENDVSILQGVTLGGTGKESGDRHPKVREGVMIGAGAKILGNIEVGKYAKIGANSVVLNPVPEYATAAGVPARIVSQDKAAKPAFDMNQYFI 257
               SCOP domains d1ssqd_ D: Serine acetyltransferase                                                                                                                                                                                                                               SCOP domains
               CATH domains 1ssqD01 D:1-138 serine acetyltransferase, domain 1                                                                                        1ssqD02 D:139-257 Hexapeptide repeat proteins                                                                           CATH domains
           Pfam domains (1) ----SATase_N-1ssqD03 D:5-109                                                                                 -------------------------------------------------------------------------------Hexapep-1ssqD01 D:189-224           --------------------------------- Pfam domains (1)
           Pfam domains (2) ----SATase_N-1ssqD04 D:5-109                                                                                 -------------------------------------------------------------------------------Hexapep-1ssqD02 D:189-224           --------------------------------- Pfam domains (2)
         Sec.struct. author .hhhhhhhhhhhhhhhhhhh..hhhhhhhhh....hhhhhhhhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhh.ee....ee....eee.....ee....ee....eee...eee...........ee....ee....eee...ee....ee....ee.......eeee....eeeee....hhhhhh..... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------HEXAPEP_TRANSFERASES         ------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1ssq D   1 MNLDVWQHIRQEAKELAENEPMLASFFHSTILKHQNLGGALSYLLANKLANPIMPAISLREIIEEAYQSNPSIIDCAACDIQAVRHRDPAVELWSTPLLYLKGFHAIQSYRITHYLWNQNRKSLALYLQNQISVAFDVDIHPAAKIGHGIMFDHATGIVVGETSVIENDVSILQGVTLGGTGKESGDRHPKVREGVMIGAGAKILGNIEVGKYAKIGANSVVLNPVPEYATAAGVPARIVSQDKAAKPAFDMNQYFI 257
                                    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

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 '\|'

Asymmetric Unit

Classes(

)

Folds(

)

Superfamilies( (-)

)

Families(

)

Protein Domains( (-)

)

Organisms( (-)

)

Class: All beta proteins (24004)

Fold: Single-stranded left-handed beta-helix (154)

Superfamily: Trimeric LpxA-like enzymes (147)

Family: Serine acetyltransferase (7)

Protein domain: Serine acetyltransferase (5)

Haemophilus influenzae [TaxId: 727] (4)

1a	d1ssqa_	A:
1b	d1ssqd_	D:

Asymmetric Unit(hide GO term definitions)

Chain A,D (CYSE_HAEIN | P43886)

molecular function
	GO:0009001	serine O-acetyltransferase activity	Catalysis of the reaction: L-serine + acetyl-CoA = O-acetyl-L-serine + CoA.
	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.
	GO:0016746	transferase activity, transferring acyl groups	Catalysis of the transfer of an acyl group from one compound (donor) to another (acceptor).
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.

Asymmetric Unit
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	Ligands, Modified Residues, Ions
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	Cis Peptide Bonds
		Val A:235 - Pro A:236	[ RasMol ]
		Val D:235 - Pro D:236	[ RasMol ]

Biological Unit
	Complete Structure
		Biological Unit 1	[ Jena3D ]

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	1ssq
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	CYSE_HAEIN \| P43886
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	CYSE_HAEIN \| P43886	:	1s80 1ssm 1sst 1y7l

Description

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