Contacts of the helix formed by residues 829 - 833 (chain A) in PDB entry 4YZ9
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with HIS 829 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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804A ILE* 3.3 35.9 - - + -
807A GLU* 2.7 29.3 + - + -
808A LEU* 3.6 36.7 - - + +
811A LYS* 6.1 2.5 - - + -
825A HIS 3.5 5.1 + - - +
826A VAL 3.1 17.3 + - - +
828A LYS* 1.3 80.5 - - - +
830A PRO* 1.3 75.7 - - + +
831A PHE* 2.9 32.5 + - + +
832A PHE* 3.1 14.2 + - - +
833A TRP* 3.5 6.1 + - - -
945A TYR* 4.0 14.4 - + - -
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Residues in contact with PRO 830 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
804A ILE* 3.7 17.3 - - + +
828A LYS 4.0 0.2 - - - +
829A HIS* 1.3 99.8 - - + +
831A PHE* 1.3 60.6 + - - +
832A PHE 3.0 0.7 - - - -
833A TRP* 3.0 49.2 + - + +
838A GLN* 4.6 6.1 + - - -
941A LEU* 4.0 16.5 - - + +
942A ALA* 5.9 0.2 - - - -
945A TYR* 3.5 44.2 - - + -
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Residues in contact with PHE 831 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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666A ILE* 3.9 39.7 - - + +
669A LEU* 3.9 19.3 - - + -
764A PHE* 4.1 5.6 - + - -
768A ILE* 3.5 35.0 - - + -
801A GLU 5.3 2.7 - - - -
804A ILE* 3.3 11.1 - - + +
805A ALA* 3.8 23.8 - - + -
808A LEU* 3.9 16.6 - - + -
829A HIS* 2.9 21.7 + - + +
830A PRO* 1.3 77.0 - - - +
832A PHE* 1.3 93.7 + + + +
833A TRP 3.8 2.1 + - - +
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Residues in contact with PHE 832 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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666A ILE* 3.3 37.7 - - + +
669A LEU 4.0 1.1 - - - -
670A GLN* 3.4 50.6 - - + +
673A THR* 4.4 1.3 - - - -
764A PHE* 3.8 17.3 - + - -
808A LEU* 4.7 1.3 - - + -
826A VAL* 3.4 37.9 - - + -
827A LEU* 3.9 21.5 - - + +
829A HIS 3.1 8.5 + - - +
830A PRO 3.0 0.6 - - - -
831A PHE* 1.3 102.2 - + + +
833A TRP* 1.3 65.0 + - + +
834A SER 3.7 1.2 + - - -
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Residues in contact with TRP 833 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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827A LEU 5.5 1.3 - - - -
828A LYS* 3.0 22.6 + - - +
829A HIS 3.5 9.6 + - - -
830A PRO* 3.0 33.0 + - + +
831A PHE 4.8 2.1 - - - +
832A PHE* 1.3 82.4 - - + +
834A SER* 1.3 69.2 + - - +
837A LYS* 3.7 39.1 - - + +
838A GLN* 3.3 36.7 + - + -
841A PHE* 3.6 31.2 - + + -
941A LEU* 4.1 5.8 - - + -
945A TYR* 3.6 33.2 - + - -
959A PRO 4.8 0.8 + - - -
960A TYR* 3.4 34.5 - + + -
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il