5YIX

Caulobacter crescentus GcrA sigma-interacting domain (SID) in complex with domain 2 of sigma 70

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	RNA polymerase sigma factor RpoD	polymer	361	40153.2	1	UniProt (A0A0H3CAV3) Pfam (PF00140) Pfam (PF04546) Pfam (PF04542) In PDB	Caulobacter crescentus (strain NA1000 / CB15N)	Sigma-70
2	B	Cell cycle regulatory protein GcrA	polymer	90	9670.0	1	UniProt (A0A0H3C9J4) Pfam (PF07750) In PDB	Caulobacter crescentus
3	A, B	(R,R)-2,3-BUTANEDIOL	non-polymer		90.1	2	Chemie (BU3)
4	B	ZINC ION	non-polymer		65.4	1	Chemie (ZN)
5		water	water		18.0	182	Chemie (HOH)

Sequence modifications

A: 128 - 487 (UniProt: A0A0H3CAV3)

PDB	External Database	Details
Gly 127	-	expression tag

B: 88 - 173 (UniProt: A0A0H3C9J4)

PDB	External Database	Details
Gly 84	-	expression tag
Ala 85	-	expression tag
Met 86	-	expression tag
Asp 87	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	49823.2
Non-Polymers*	Number of molecules	3
	Total formula weight	245.7
All*	Total formula weight	50068.9

*Water molecules are not included.