Contacts of the helix formed by residues 654 - 660 (chain B) in PDB entry 3HOU
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 ARG 654 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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21B GLU 4.6 1.6 - - - +
22B SER* 3.4 37.8 + - - +
23B ALA 3.0 22.4 - - - +
24B PRO* 4.1 5.6 - - - -
25B ILE* 3.4 8.3 - - - -
641B GLU 5.7 0.2 + - - -
643B ASP* 5.1 6.3 + - - +
644B GLU* 3.4 25.2 + - - +
650B GLU* 3.4 27.5 + - - +
651B LEU 2.8 23.3 + - - -
652B LYS* 3.2 14.4 + - - +
653B VAL* 1.3 78.4 - - - +
655B LYS* 1.3 54.0 + - - +
656B GLY 2.6 3.9 + - - +
657B HIS* 2.5 46.3 + - + +
658B ILE 3.1 3.6 + - - -
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Residues in contact with LYS 655 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
20B ASP* 4.8 11.9 - - - +
23B ALA* 3.1 17.0 + - + +
24B PRO 3.1 22.3 + - - +
25B ILE* 3.1 6.4 - - - +
29B ASP* 3.8 20.8 + - - +
654B ARG* 1.3 70.6 - - - +
656B GLY* 1.3 56.6 + - - +
658B ILE* 3.5 9.7 - - + +
659B ALA* 3.0 35.3 + - + +
662B MET* 3.1 34.8 - - - +
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Residues in contact with GLY 656 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
21B GLU* 3.7 38.3 - - - +
654B ARG 2.6 6.5 + - - -
655B LYS* 1.3 74.6 - - - +
657B HIS* 1.3 57.8 + - - +
659B ALA* 3.3 4.5 + - - +
660B LYS* 2.8 33.7 + - - +
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Residues in contact with HIS 657 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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21B GLU 4.8 2.5 + - - -
652B LYS 4.0 3.9 + - - -
653B VAL* 3.7 13.0 - - + -
654B ARG* 2.5 42.2 + - + +
656B GLY* 1.3 71.0 - - - +
658B ILE* 1.3 55.4 + - - +
660B LYS* 3.2 17.7 - - + +
661B LEU* 3.2 7.5 + - - +
679B TYR* 2.8 41.0 + - + +
684B LEU* 5.1 1.8 - - + -
687B GLU* 3.1 26.2 - - - -
689B LEU* 3.3 31.1 - - + +
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Residues in contact with ILE 658 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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25B ILE* 3.5 19.1 - - + -
29B ASP* 3.1 57.9 - - + +
30B SER* 4.6 0.4 - - - +
32B ALA* 4.4 9.2 - - + -
33B VAL* 4.4 15.9 - - + -
638B PHE* 6.0 0.4 - - + -
653B VAL* 4.3 15.7 - - + -
654B ARG 3.1 2.6 + - - +
655B LYS* 3.5 9.4 - - - +
657B HIS* 1.3 76.5 - - - +
659B ALA* 1.3 57.9 + - - +
660B LYS 2.8 3.8 - - - -
661B LEU* 2.7 34.6 + - + +
662B MET* 3.1 31.8 + - + +
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Residues in contact with ALA 659 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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655B LYS* 3.0 32.1 + - - +
656B GLY* 3.9 4.5 - - - +
658B ILE* 1.3 79.7 - - - +
660B LYS* 1.3 59.2 + - - +
662B MET* 3.4 16.8 - - + +
663B ALA* 3.4 18.5 + - - +
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Residues in contact with LYS 660 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
656B GLY 2.8 18.9 + - - +
657B HIS* 3.2 13.2 + - - +
658B ILE 2.8 0.2 - - - -
659B ALA* 1.3 77.1 - - - +
661B LEU* 1.3 59.0 - - - +
663B ALA* 3.2 19.8 - - + +
664B THR* 3.9 2.4 + - - -
679B TYR* 3.4 50.0 - - + +
687B GLU* 4.8 5.7 + - - -
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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