Contacts of the helix formed by residues 267 - 272 (chain C) in PDB entry 3UDB
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 SER 267 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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200C VAL* 4.7 2.7 - - - -
265C ARG 4.9 2.0 - - - -
266C ILE* 1.3 74.4 - - - +
268C ILE* 1.3 66.0 + - - +
269C PRO* 3.2 18.7 - - - +
270C GLU* 2.8 32.3 + - - +
271C ILE* 2.8 25.6 + - - +
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Residues in contact with ILE 268 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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125C ILE* 4.0 29.2 - - + -
128C VAL* 3.9 25.8 - - + -
129C SER* 3.6 30.3 - - - +
132C HIS* 4.2 19.7 - - + +
196C LYS 5.2 0.4 - - - +
200C VAL* 3.8 27.3 - - + +
203C CYS* 5.4 0.2 - - - -
267C SER* 1.3 71.5 - - - +
269C PRO* 1.3 73.7 - - + +
271C ILE* 3.1 8.7 + - + +
272C ARG* 3.0 36.2 + - - +
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Residues in contact with PRO 269 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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267C SER* 3.2 15.3 - - - +
268C ILE* 1.3 96.1 - - + +
270C GLU* 1.3 60.6 + - + +
272C ARG* 3.3 23.6 + - - +
273C ASN* 3.4 18.8 + - - +
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Residues in contact with GLU 270 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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256C ARG* 4.6 8.7 + - - -
265C ARG 4.6 1.2 - - - +
266C ILE* 3.4 23.6 - - + +
267C SER* 2.8 37.6 + - - +
269C PRO* 1.3 76.4 - - + +
271C ILE* 1.3 66.5 + - - +
273C ASN* 3.1 16.0 + - - +
274C HIS* 3.2 13.5 + - - +
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Residues in contact with ILE 271 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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121C PHE* 4.0 14.8 - - + -
125C ILE* 4.3 22.0 - - + -
200C VAL* 4.0 20.2 - - + -
203C CYS* 6.0 0.4 - - + -
253C LEU* 4.2 9.2 - - + -
257C ILE* 4.3 12.1 - - + -
266C ILE* 3.7 33.4 - - + -
267C SER 2.8 18.8 + - - +
268C ILE* 3.6 9.9 - - - +
270C GLU* 1.3 76.5 - - - +
272C ARG* 1.3 63.2 + - - +
273C ASN 3.1 1.0 + - - -
274C HIS* 3.1 8.8 + - - +
277C PHE* 3.1 39.0 - - + +
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Residues in contact with ARG 272 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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125C ILE* 4.2 15.7 - - + -
126C SER* 4.9 0.4 + - - +
129C SER* 4.0 17.7 + - - -
268C ILE* 3.0 33.2 + - - +
269C PRO* 3.5 14.9 - - - +
270C GLU 3.2 0.4 - - - -
271C ILE* 1.3 74.9 - - - +
273C ASN* 1.3 60.7 + - - +
274C HIS 3.5 0.2 - - - -
277C PHE* 3.7 21.4 - - + -
278C LEU* 3.4 21.7 - - - +
281C LEU* 5.0 1.2 - - - +
286C MET* 3.2 55.4 + - - +
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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